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Publication numberCN102480751 A
Publication typeApplication
Application numberCN 201110383907
Publication date30 May 2012
Filing date28 Nov 2011
Priority date29 Nov 2010
Also published asCA2815376A1, CN102480751B, EP2647238A2, EP2647238A4, US8737244, US20120134280, WO2012074900A2, WO2012074900A3
Publication number201110383907.7, CN 102480751 A, CN 102480751A, CN 201110383907, CN-A-102480751, CN102480751 A, CN102480751A, CN201110383907, CN201110383907.7
Inventors丹尼尔·克利福德·卡尔森, 凯利·迈克尔·奥什, 埃里克·达雷尔·罗特伏德, 约瑟夫·奇特拉诺三世, 荻奥多·亨利·施奈尔
Applicant罗斯蒙德公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
Wireless sensor network access point and device RF spectrum analysis system and method
CN 102480751 A
Abstract
A system for measuring and analyzing radio frequency power proximate and within a wireless field device mesh network is disclosed. A centralized software module (CSWM) collects and analyzes values from one or more wireless devices of the wireless field device mesh network representing received RF power measurements on an assigned RF channel and values representing corresponding times of the received RF power measurements. Each wireless device measures received RF power on the assigned RF channel at times other than during reception of a signal resulting in transmission by the wireless device of either an acknowledgment signal or a non-acknowledgement signal. Values representing the received RF power measurements and the corresponding times of the received RF power measurements are determined from the stored received RF power measurements and corresponding times and then discarded. These values are stored within the wireless device until successfully reported. A network manager coordinates communication between the wireless devices and synchronizes the corresponding times of received RF power measurement throughout the wireless field device mesh network.
Claims(38)  translated from Chinese
1. 一种用于测量和分析无线现场设备网格网络附近和内部的射频RF干扰的方法,所述方法包括:协调RF信道分配,并协调和同步测量时间;其中网络管理器在整个所述无线现场设备网格网络内协调RF信道分配并协调和同步测量时间;利用构成所述无线现场设备网格网络的多个无线设备中的至少一个无线设备来测量所分配的RF信道上的接收RF功率;如果对所分配的RF信道上的RF功率的测量不是在导致所述多个无线设备中的所述至少一个无线设备发射肯定确认信号和否定确认信号之一的信号的接收期间执行的,则在所述多个无线设备中的所述至少一个无线设备内存储在所分配的RF信道上测量的接收RF功率的测量结果以及对应的测量时间;在所述多个无线设备中的所述至少一个无线设备内,根据所存储的RF功率的测量结果和所存储的对应的测量时间,确定代表在所分配的RF信道上的接收RF功率的测量结果的值和代表对应的测量时间的值;在根据所存储的接收RF功率的测量结果和所存储的对应的测量时间,确定代表在所分配的RF信道上的接收RF功率的测量结果的值和代表对应的测量时间的值之后,丢弃在所述多个无线设备中的所述至少一个无线设备内存储的接收RF功率的测量结果和对应的测量时间;从所述多个无线设备中的所述至少一个无线设备向中央软件模块CSWM报告代表在所分配的RF信道上的接收RF功率的测量结果的值和代表对应的测量时间的值;在所述多个无线设备中的所述至少一个无线设备处接收确认代表在所分配的RF信道上的接收RF功率的测量结果的值和代表对应的测量时间的值已成功报告的信号;以及在接收到所述确认代表在所分配的RF信道上的接收RF功率的测量结果的值和代表对应的测量时间的值已成功报告的信号时,在所述多个无线设备中的所述至少一个无线设备内丢弃代表在所分配的RF信道上的接收RF功率的测量结果的值和代表对应的测量时间的值。 1. A method for measuring and analyzing the wireless field device near the mesh network and internal RF radio frequency interference, the method comprising: coordination RF channel allocation, and to coordinate and synchronize the measurement time; wherein the network manager throughout the coordination within the wireless mesh network RF field device and coordinate channel allocation and synchronization measurement time; at least one wireless device to measure the received RF RF channels allocated using the wireless field device constituting a plurality of wireless mesh network devices power; if the measurement of the assigned RF channel RF power not lead to the plurality of wireless devices in the at least one wireless device transmits a negative acknowledgment signal and the received acknowledgment signal during the execution of one of the signals, at least one measurement result is stored in the wireless device within the assigned RF channel of the received RF power measurement and the measurement time corresponding to the plurality of wireless devices; in said plurality of wireless devices at least one wireless device, according to the measurement results of the stored RF power and the corresponding stored measurement time, determining a value representative of the measurement results of the assigned RF channel reception RF power values and the corresponding measurement time representatives ; in the measurement result based on the stored received RF power and the corresponding measurement time the stored values to determine the representative after representative of the corresponding measurement time and measurement results of RF channels assigned to receive RF power of discards the plurality of wireless devices in the at least one measurement within the wireless device stores the received RF power and a corresponding measurement time; the plurality of wireless devices from the at least one wireless device to the central software modules CSWM Report on behalf of the values and the measured values represent a time corresponding measurements assigned RF channel received RF power; the number of wireless devices in the at least one wireless device to receive confirmation on behalf of the assigned and upon receiving the confirmation value representing the measurement results of the assigned RF channel of the received RF power; and the signal representative of the corresponding values of the measurement time of the measurement results of the received RF power RF channel has been successfully reported and the value corresponding to the signal representative of the measurement time has been successfully reported, at least one measurement value representing discarded assigned RF channel within the received RF power of the wireless devices in the plurality of wireless devices and representative value corresponding to the measured time.
2.根据权利要求1所述的方法,进一步包括:在网关和主计算机中的至少一个上运行CSWM和网络管理器中的每一个。 2. The method according to claim 1, wherein further comprising: at least one run CSWM and network manager in each of the gateway and host computer.
3.根据权利要求1所述的方法,其中向CSWM报告代表在所分配的RF信道上的接收RF 功率的测量结果的值和代表对应的测量时间的值包括:以交错的方式通过无线现场设备网格网络传输报告。 3. The method according to claim 1, wherein the CSWM report on behalf of the values representing the corresponding measurement results measurement time allocated RF channels received RF power include: a staggered manner over a wireless field device mesh network transmission reports.
4.根据权利要求1所述的方法,其中向CSWM报告代表在所分配的RF信道上的接收RF 功率的测量结果和代表对应的测量时间的值以网络管理器可配置的频度(rate)发生。 4. The method according to claim 1, wherein the frequency of reporting to CSWM representative measurement results of the assigned RF channel RF power and representatives received the corresponding measuring time to the network manager can configure the (rate) occur.
5.根据权利要求1所述的方法,其中所述对应的测量时间位于下述时隙的一部分期间:在所述时隙的所述一部分期间,调度在所分配的RF信道上的通信,并且所述多个无线设备中的所述至少一个无线设备在所述时隙期间不发射肯定确认信号或否定确认信号。 5. The method according to claim 1, wherein the measurement time is located during the corresponding time slot of the following part: a portion of the period of the time slot, scheduling a communication on the assigned RF channel, and the plurality of wireless devices in the at least one wireless device does not transmit during said time slot acknowledgment signal or negative acknowledgment signal.
6.根据权利要求1所述的方法,其中所述对应的测量时间是在下述时隙期间:在所述时隙期间,整个无线现场设备网格网络中没有被调度在所分配的RF信道上的任何通信。 6. The method according to claim 1, wherein said measurement time period corresponding to the time slot following: during the time slot, the wireless field devices throughout the mesh network is not scheduled on the assigned RF channels any communication.
7.根据权利要求1所述的方法,其中所述对应的测量时间是在下述时隙的一部分期间:在所述时隙的所述一部分期间,整个无线现场设备网格网络中没有被调度在任何RF信道上的任何通信。 7. The method according to claim 1, wherein said measurement time period corresponding to a part of the following slots: during the portion of the slot, the wireless field devices throughout the mesh network is not scheduled in any communication of any RF channel.
8.根据权利要求1所述的方法,其中所述确认代表在所分配的RF信道上的接收RF 功率的测量结果的值和代表对应的测量时间的值已成功报告的信号源自相邻节点和所述CSWM中的至少一个。 8. The method according to claim 1, wherein said acknowledgment signal representative of the value representing the corresponding measured values of the measurement results of the time allocated RF channel has been successfully received RF power reported from neighboring nodes a and in the CSWM least.
9.根据权利要求1所述的方法,还包括:在多点梯度图上显示代表在所分配的RF信道上的接收RF功率的测量结果的值。 9. The method according to claim 1, further comprising: display value represents the measurement results of the assigned RF channel of the received RF power in the multi-gradient FIG.
10.根据权利要求1所述的方法,还包括:在本地操作员接口上显示下述信息中的至少一个:在所分配的RF信道上测量的接收RF功率的测量结果和对应的测量时间;以及代表在所分配的RF信道上的接收RF功率的测量结果的值。 10. The method according to claim 1, further comprising: displaying at least one of the following information on a local operator interface: measurements in the assigned RF channel of the received RF power measurement and the corresponding measurement time; and the value represents the measurement results of the allocated RF channel of the received RF power.
11.根据权利要求1所述的方法,还包括:在CSWM处监视所报告的代表在所分配的RF信道上的接收RF功率的测量结果的值和代表对应的测量时间的值。 11. The method according to claim 1, further comprising: monitoring at CSWM values reported represent the measurement results of the assigned RF channel of the received RF power values representing the corresponding measuring time. 当所监视的代表接收RF功率的测量结果的值中的至少一个超过预定值时,检测RF干扰;以及从CSWM生成向系统操作员和运行在主计算机上的控制或监视软件应用中的至少一个通知所述RF干扰的警报。 When the value of the monitored agent receives measurements RF power of at least one of more than a predetermined value, the detection of RF interference; and generating from CSWM to at least one notification system operator and operational control or monitoring software application on the host computer in the The RF interference alarm.
12.根据权利要求11所述的方法,还包括:在CSWM处,分析所报告的代表在检测到RF干扰的、所分配的RF信道上的接收RF功率的测量结果的值和代表对应的测量时间的值,在CSWM处,根据经分析的值创建所述RF干扰的RF频谱特征图; 在CSWM处,将所述RF干扰的RF频谱特征图与多个RF频谱特征图进行比较,所述多个RF频谱特征图中的每一个标识已知的RF干扰源; 根据经比较的RF频谱特征图来识别RF干扰源。 12. The method of claim 11, further comprising: CSWM at the reported analytical measurements representative values representing the measurement results of RF interference detected, the assigned RF channel corresponding to the received RF power the value of time, at CSWM at the RF interference is created by the analysis based on the value of the RF spectrum feature maps; at CSWM at the RF interference characteristics of RF spectrum chart with a plurality of RF spectrum characteristic diagram comparing the FIG plurality of RF spectral characteristics of each identified known RF interference source; by comparison according to the characteristics of the RF spectrum RF interference source identified in FIG.
13.根据权利要求11所述的方法,还包括:在CSWM处,分析所报告的代表在检测到RF干扰的、所分配的RF信道上的接收RF功率的测量结果的值和代表对应的测量时间的值,在CSWM处,根据经分析的值确定RF干扰的时间图样;在CSWM处,将所述RF干扰的时间图样与多个RF时间图样进行比较,所述多个RF时间图样中的每一个标识已知的RF干扰源;根据经比较的RF时间图样来识别RF干扰源。 13. The method of claim 11, further comprising: CSWM at the reported analytical measurements representative value representing the measurement results of RF interference detected, the assigned RF channel corresponding to the received RF power the value of time, at CSWM at a time to determine RF interference pattern based on the value of the analyzed; in CSWM at the time of the RF interference pattern with a plurality of RF time pattern comparison, the time pattern of the plurality of RF Each RF interference source identified known; by comparison according to the RF time pattern to identify RF interference source.
14.根据权利要求1所述的方法,其中确定代表在所分配的RF信道上的接收RF功率的测量结果的值包括:在所述多个无线设备中的所述至少一个无线设备内计算所存储的接收RF功率的测量结果和所存储的对应的测量时间的统计值,其中计算统计值包括:计算所存储的接收RF功率的测量结果的最大值、最小值、平均值、标准偏差值和方差值中的至少一个。 14. The method according to claim 1, wherein determining the representative value of the measurement result in the assigned RF channel reception RF power comprising: at least one of the wireless devices in the calculation of the plurality of wireless devices the statistical value of the corresponding measured time storage of received RF power measurements and stored, wherein calculating the statistical value includes: calculating a maximum value of the stored measurement results received RF power, minimum, mean, standard deviation, and a variance at least.
15.根据权利要求14所述的方法,还包括:在CSWM处,比较来自所述多个无线设备中的至少两个无线设备的、针对所分配的RF信道的、所计算的统计值和对应的测量时间,其中所述多个无线设备中的所述至少两个无线设备位于CSWM已知的位置处;在CSWM处,根据经比较的所计算的统计值和时间并且根据所述多个无线设备中的所述至少两个无线设备的已知位置来确定所分配的RF信道上的RF干扰源的两个可能位置; 在CSWM处,比较所分配的RF信道上的RF干扰源的两个可能位置的非RF干扰特性,以确定所述RF干扰源的位置;以及向系统操作员和运行在主计算机上的控制或监视软件应用中的至少一个报告所述RF 干扰源的位置。 15. The method according to claim 14, further comprising: at CSWM, comparing the plurality of wireless devices from the at least two wireless devices, for the assigned RF channel, the calculated values and the corresponding statistic measuring time, wherein the plurality of wireless devices in the at least two wireless devices located at CSWM known; in CSWM place, according to the statistical value and time comparison of the calculated and based on the plurality of wireless In CSWM at two, more RF channels allocated RF interference source; apparatus known positions of said at least two wireless devices to determine the two possible positions of RF interference source RF channels allocated possible non-RF interference characteristic position to determine the location of interference sources said RF; and a control or monitoring system operator and to run on the host computer's software applications at least one report the location of the RF interference source.
16.根据权利要求14所述的方法,还包括:在CSWM处,比较来自所述多个无线设备中的至少三个无线设备的、针对所分配的RF信道的、所计算的统计值和对应的测量时间,其中所述多个无线设备中的所述至少三个无线设备位于CSWM已知的位置处;在CSWM处,根据经比较的所计算的统计值和时间并且根据所述多个无线设备中的所述至少三个无线设备的已知位置来确定所分配的RF信道上的RF干扰源的位置;以及向系统操作员和运行在主计算机上的控制或监视软件应用中的至少一个报告所述RF 干扰源的位置。 16. The method according to claim 14, further comprising: at CSWM, from comparing the plurality of wireless devices in a wireless device, at least three, for the assigned RF channel, the calculated values and the corresponding statistic measuring time, wherein the plurality of wireless devices in said at least three radio equipment located at CSWM known; in CSWM place, according to the statistical value and time comparison of the calculated and based on the plurality of wireless apparatus said at least three known positions to determine the location of a wireless device RF interference sources allocated RF channels; and the system operator and run at least one control or monitoring of software applications on the host computer Report of the RF interference source location.
17.根据权利要求16所述的方法,其中所述多个无线设备中的所述至少三个无线设备的位置是固定位置。 17. The method according to claim 16, wherein said at least positions of the plurality of wireless devices in three fixed positions is a wireless device.
18. 一种用于测量和分析无线现场设备网格网络附近和内部的射频(RF)干扰的系统, 所述系统包括:中央软件模块(CSWM),用于收集和分析代表在分配的RF信道上的接收RF功率的测量结果的值以及代表接收RF功率的对应的测量时间的值;多个无线设备,每个无线设备测量分配的RF信道上的接收RF功率和对应的测量时间; 如果对接收RF功率的测量不是在导致无线设备发射肯定确认信号和否定确认信号之一的信号的接收期间执行的,则存储所述接收RF功率的测量结果;利用所存储的接收RF功率的测量结果和对应的测量时间来确定针对所分配的RF信道的代表接收RF功率的测量结果的值和代表对应的测量时间的值;其中所存储的接收RF功率的测量结果和对应的测量时间被存储在所述无线设备中,直到确定了针对所分配的RF信道的代表接收RF功率的测量结果的值和代表对应的测量时间的值;其中代表接收RF功率的测量结果的值和代表对应的测量时间的值被存储在所述无线设备中,直到接收到确认来自所述无线设备的代表所分配的RF信道上的接收RF功率的测量结果的值和代表接收RF功率的对应的测量时间的值已成功报告的信号;以及网络管理器,用于协调所述多个无线设备之间的通信,协调RF信道分配,以及协调和同步整个无线现场设备网格网络中的对应的测量时间。 18. A system for measuring and analyzing the vicinity and internal mesh network RF wireless field devices (RF) interference, the system comprising: a central software module (CSWM), for collecting and analyzing the distribution of representatives RF channel measurement values received on the RF power and the RF power corresponding to the representative of the received measuring time; a plurality of wireless devices, each wireless device assigned measuring RF power and the RF channel corresponding to the received measurement time; if receiving RF power measurement not cause wireless device transmits a negative acknowledgment signal and the measurement results performed during the reception confirmation signal one signal, storing the received RF power; measurements using the stored and the received RF power corresponding measurement time to determine the value representing the corresponding measured time received RF power for the representative of the assigned RF channel measurements; wherein the stored received RF power measurement and the corresponding measurement time are stored in the said wireless device, until it is determined the values representing the corresponding measurements represent a time for the assigned RF channel received RF power measurements; wherein represents the measured results of the reception RF power values and the representatives of the corresponding measuring time value is the value at the wireless device, and the representative value of measurement results until it receives an acknowledgment from the wireless device on behalf of the assigned RF channel of the received RF power of the received RF power corresponding to the measurement time of storage was successfully Signal reports; and a network manager, for coordinating the communication, coordination RF channel allocation among a plurality of wireless devices, as well as coordinating and synchronizing the corresponding measurement time the entire wireless field devices in a mesh network.
19.根据权利要求18所述的系统,其中每个无线设备在所述接收RF功率的测量结果是在预定的RF功率测量范围内时存储所述接收RF功率的测量结果。 19. The system of claim 18, wherein each wireless device in the measurement result of the received RF power is received when the measurement result is stored in a predetermined RF power RF power measurement range.
20.根据权利要求18所述的系统,其中每个无线设备以下述方式向CSWM提供代表接收RF功率的测量结果的值和代表对应的测量时间的值以及所分配的RF信道:以由网络管理器协调的交错方式通过无线现场设备网格网络传输报告。 20. The system of claim 18, wherein each wireless device in the following manner to provide measurements representative of the received RF power value and the measured value representative of the time and the corresponding RF channels assigned to CSWM: In the network management Coordinate staggered manner over a wireless field device network transmission grid reports.
21.根据权利要求18所述的系统,其中每个无线设备以网络管理器可配置的频度向CSWM提供代表接收RF功率的测量结果的值和代表对应的测量时间的值以及所分配的RF信道。 21. The system of claim 18, wherein the frequency of each wireless device to the network manager can be configured to provide values representing the corresponding measurement time representing the received RF power of the measurement results and allocated to the RF CSWM channel.
22.根据权利要求18所述的系统,其中每个无线设备在所述接收RF功率的测量结果是在下述时隙的一部分期间执行的情况下存储所述测量结果:在所述时隙的所述一部分期间,调度在所分配的RF信道上的通信,并且所述无线设备在所述时隙期间不发射肯定确认信号或否定确认信号。 22. The system of claim 18, wherein each wireless device storing the measurement result of the measurement in the case where the RF power is received in the slot during a part of the execution of the following results: the slot in the During the said part of the scheduling in the assigned RF communication channel, and the wireless device does not transmit a negative acknowledgment signal or the acknowledgment signal during the time slot.
23.根据权利要求18所述的系统,其中每个无线设备在所述接收RF功率的测量结果是在下述时隙期间执行的情况下存储所述测量结果:在所述时隙期间,整个无线现场设备网格网络中没有被调度在所分配的RF信道上的任何通信。 23. The system of claim 18, wherein each wireless device in the measurement result of the received RF power is stored in the measurement performed under the following conditions during the time slot: during the time slot, the entire wireless field devices in the mesh network is not scheduled any communication on the assigned RF channels.
24.根据权利要求18所述的系统,其中每个无线设备在所述接收RF功率的测量结果是在下述时隙的一部分期间执行的情况下存储所述测量结果:在所述时隙的所述一部分期间,整个无线现场设备网格网络中没有被调度在任何RF信道上的任何通信。 24. The system of claim 18, wherein each wireless device storing the measurement result of the measurement in the case where the RF power is received in the slot during a part of the execution of the following results: the slot in the During the said part of the entire wireless field device mesh network is not scheduled any communication in any RF channel.
25.根据权利要求18所述的系统,其中网络管理器协调整个无线现场设备网格网络的对应的测量时间,使得对应的测量时间是在下述中的至少一个期间:第一时隙的一部分,在所述第一时隙的所述一部分期间,调度所分配的RF信道上的通信,并且所述无线设备在所述第一时隙期间不发射肯定确认信号或否定确认信号;第二时隙,在所述第二时隙期间,整个无线现场设备网格网络中没有被调度在所分配的RF信道上的任何通信;第三时隙的一部分,在所述第三时隙的所述一部分期间,整个无线现场设备网格网络中没有被调度在任何RF信道上的任何通信。 25. The system of claim 18, wherein the network manager to coordinate the entire measurement time corresponding to the mesh network wireless field devices, so that the corresponding measurement time period is at least one of the following: a portion of the first slot, , during a portion of the communication of the scheduling of the first slot assigned RF channel, and the wireless device does not transmit acknowledgment signal or negative acknowledgment signal during said first time slot; the second slot part of the third slot, the slot in the third part; any communication, during the second time slot, the entire wireless mesh network field device is not scheduled on the assigned RF channels During the entire wireless field device mesh network is not scheduled any communication in any RF channel.
26.根据权利要求18所述的系统,其中网络管理器协调整个无线现场设备网格网络的对应的测量时间,使得对应的测量时间是在下述中的至少一个期间:第一时隙的第一部分,其中在所述第一时隙的所述第一部分期间,整个无线现场设备网格网络中没有被调度在任何RF信道上的任何通信;第一时隙的第二部分,在所述第一时隙的所述第二部分期间,调度所分配的RF信道上的通信,并且所述无线设备在所述第一时隙期间不发射肯定确认信号或否定确认信号;第二时隙,在所述第二时隙期间,整个无线现场设备网格网络中没有被调度在所分配的RF信道上的任何通信。 26. The system of claim 18, wherein the network manager to coordinate the entire measurement time corresponding to the mesh network wireless field devices, so that the corresponding measurement time period is at least one of the following: a first portion of the first slot , wherein during said first portion of said first time slot, the entire wireless mesh network field device is not scheduled in any communication any RF channel; the second portion of the first slot in the first During the second portion of the time slot, allocated scheduling RF communication channel, and the wireless device does not transmit acknowledgment signal or negative acknowledgment signal during said first time slot; second time slot, in the During the second slot, the entire wireless field device mesh network is not scheduled any communication on the assigned RF channel.
27.根据权利要求18所述的系统,其中所述确认来自无线设备的代表在所分配的RF信道上的接收RF功率的测量结果的值和代表对应的接收RF功率的测量时间的值已成功报告的信号源自相邻节点和所述CSWM中的至少一个。 27. The system of claim 18, wherein the acknowledgment from the wireless device value representative of the value representing the measurement results in the allocated RF channel corresponding to the received RF power of the RF power received measurement time has succeeded signal derived from at least one report of neighboring nodes and the CSWM.
28.根据权利要求18所述的系统,其中所述多个无线设备中的至少一个无线设备还包括本地操作员接口,所述本地操作员接口能够显示下述信息中的至少一个:在所分配的RF信道上测量的接收RF功率的测量结果和对应的测量时间;以及代表在所分配的RF信道上的接收RF功率的测量结果的值。 28. The system of claim 18, wherein the plurality of wireless devices to at least one wireless device further includes a local operator interface, said local operator interface capable of displaying information in at least one of the following: the assigned The measurement results of the received RF channel RF power measurement and the corresponding measurement time; and a representative value in the measurement results of the assigned RF channel of the received RF power.
29.根据权利要求18所述的系统,还包括手持无线设备,所述手持无线设备在用户选择的RF信道上测量接收RF功率和对应的测量时间,其中对所选择的RF信道上的RF功率的测量不是在导致所述手持无线设备发射肯定确认信号和否定确认信号之一的信号的接收期间执行的;其中所述网络管理器协调所述多个无线设备和所述手持无线设备之间的通信,并且协调和同步所述手持无线设备的对应的测量时间。 29. The system of claim 18, further comprising a handheld wireless device, a handheld wireless device measures the received RF power in the measurement time and the corresponding RF channel selected by the user, wherein the selected RF channel RF power measuring not cause the handheld wireless device transmits a negative acknowledgment signal and the received acknowledgment signal during the execution of one of the signal; wherein said network manager to coordinate the plurality of handheld wireless devices and the wireless devices communication, coordination and synchronization of the hand-held wireless device and a corresponding measurement time.
30.根据权利要求18所述的系统,其中CSWM和网络管理器中的每一个运行在网关和主计算机中的至少一个上。 30. The system of claim 18, wherein the CSWM and Network Manager running on each gateway and at least one host computer on.
31.根据权利要求30所述的系统,其中CSWM命令网关和主计算机中的至少一个在多点梯度图上显示代表在所分配的RF信道上的接收RF功率的测量结果的值。 31. The system of claim 30, wherein the CSWM command gateway and the host computer at least one value assigned to the measurement results of the received RF channel RF power in the multi-gradient map display representative.
32.根据权利要求18所述的系统,其中CSWM :监视代表在所分配的RF信道上的接收RF功率的测量结果的值; 当所监视的值中的至少一个超过预定值时,检测RF干扰;以及生成向系统操作员和运行在主计算机上的控制或监视软件应用中的至少一个通知所述RF干扰的警报。 32. The system of claim 18, wherein the CSWM: Monitoring the representative value measurements assigned RF channel RF power received; and when the value of the monitored at least one of more than a predetermined value, RF interference detection; and generating the system operator and operational control or monitoring software application on the host computer in the RF interference alert at least one notification.
33.根据权利要求32所述的系统,其中CSWM还:分析代表在检测到RF干扰的、所分配的RF信道上的接收RF功率的测量结果的值, 根据经分析的值创建所述RF干扰的RF频谱特征图;将所述RF频谱特征图与多个RF频谱特征图进行比较,所述多个RF频谱特征图中的每一个标识已知的RF干扰源;以及根据经比较的RF频谱特征图来识别RF干扰源。 33. The system of claim 32, wherein further CSWM: analysis value represents the measurement results of RF interference detected, the assigned RF channel of the received RF power, the RF interference is created based on the analyzed values RF spectrum characteristic diagram; FIG spectral characteristics of the RF spectrum with a plurality of RF characteristics diagram comparing characteristics of said plurality of RF spectrum diagram of each RF interference source known identity; and by comparison of the RF spectrum in accordance with features map to identify sources of RF interference.
34.根据权利要求32所述的系统,其中CSWM还:分析代表在检测到RF干扰的、所分配的RF信道上的接收RF功率的测量结果的值和代表对应的测量时间的值,根据经分析的值确定RF干扰的时间图样;将所述RF干扰的时间图样与多个RF时间图样进行比较,所述多个RF时间图样中的每一个标识已知的RF干扰源;根据经比较的RF时间图样来识别RF干扰源。 34. The system of claim 32, wherein CSWM further: To analyze the value representing the corresponding measuring time represents the measurement results of RF interference is detected, the assigned RF channel to receive RF power, according to the warp value determines the time pattern of RF interference analysis; time the RF interference pattern with a plurality of RF time patterns are compared, the time pattern of the plurality of RF identification of each known RF interference source; by comparison according to the RF time pattern to identify sources of RF interference.
35.根据权利要求18所述的系统,其中所述每个无线设备确定的代表接收RF功率的测量结果的值是针对所分配的RF信道的统计值,其中所述统计值包括:最大值、最小值、平均值、标准偏差值和方差值中的至少一个。 35. The system of claim 18, wherein the value determined for each wireless device representing the received RF power measurement is the statistical value for the assigned RF channel, wherein the statistical value comprises: a maximum value, minimum value, a mean value, standard deviation and variance value at least.
36.根据权利要求35所述的系统,其中CSWM :比较来自所述多个无线设备中的至少两个无线设备的、针对所分配的RF信道的所述统计值和对应的测量时间,其中所述多个无线设备中的所述至少两个无线设备位于CSWM 已知的位置处;根据经比较的统计值和时间并且根据所述多个无线设备中的所述至少两个无线设备的已知位置,来确定所分配的RF信道上的RF干扰源的两个可能位置;比较所分配的RF信道上的RF干扰源的两个可能位置的非RF干扰特性,以确定所述RF 干扰源的位置;以及向系统操作员和运行在主计算机上的控制或监视软件应用中的至少一个报告所述RF 干扰源的位置。 36. The system of claim 35, wherein CSWM: comparing the plurality of wireless devices from at least two wireless devices, the statistical value and the corresponding measurement time for the assigned RF channel, wherein said plurality of wireless devices in the at least two wireless devices located at CSWM known; based on statistics and time and by comparing the at least two wireless devices are known according to the plurality of wireless devices in the position to determine the assigned RF channel RF interference source, the two possible positions; RF comparing the distribution of non-interference in the RF channel RF interference characteristics of the two possible positions of the source to determine the source of the RF interference and the location of the system operator and operational control or monitoring of software applications on the host computer at least one report to the RF interference source; position.
37.根据权利要求35所述的系统,其中CSWM还:比较来自所述多个无线设备中的至少三个无线设备的、针对所分配的RF信道的所述统计值和对应的测量时间,其中所述多个无线设备中的所述至少三个无线设备位于CSWM已知的位置处;根据经比较的统计值和时间并且根据所述多个无线设备中的所述至少三个无线设备的已知位置来确定所分配的RF信道上的RF干扰源的位置;以及向系统操作员和运行在主计算机上的控制或监视软件应用中的至少一个报告所述RF 干扰源的位置。 37. The system of claim 35, wherein the further CSWM: comparing the plurality of wireless devices from at least three of the wireless device, the statistical value and the corresponding measurement time for the assigned RF channel, wherein the plurality of wireless devices in at least three of the wireless device located at CSWM known; based on statistics and by comparison of the time and in accordance with the plurality of wireless devices in the wireless device has at least three known location to determine the location of RF interference sources allocated RF channels; and control the system operator and running on the host computer or monitor software applications at least one report the location of the RF interference source.
38.根据权利要求37所述的系统,其中所述CSWM已知的多个无线设备中的所述至少三个无线设备的位置是固定位置。 38. The system of claim 37, wherein said plurality of wireless devices CSWM known in the position of said at least three wireless device is a fixed position.
Description  translated from Chinese

无线传感器网络接入点和设备RF频谱分析系统及方法 Wireless sensor network access points and devices RF spectrum analysis system and method

技术领域 Technical Field

[0001] 本发明一般地涉及无线网络,以及更具体地涉及测量和分析在无线现场设备网格网络附近和内部的射频(RF)干扰。 [0001] The present invention generally relates to wireless networks, and more particularly to the measurement and analysis in the vicinity of and inside the mesh network RF wireless field devices (RF) interference.

背景技术 Background

[0002] 网格网络是一种在工业应用中日益普遍的灵活的网络架构。 [0002] The mesh network is an increasingly common in industrial applications of flexible network architecture. 网格网络包括大量节点和网关计算机(网关),网关将高速总线连接到网格网络。 Mesh network includes a large number of nodes and the gateway computer (gateway), the gateway to the high-speed bus connections to the grid network. 网格网络通过允许同一网络内的相邻节点彼此直接通信,避免了其他网络拓扑的许多限制,从而避免了不必要的到网关的通信路由。 The mesh network by allowing the neighboring nodes on the same network to communicate directly with each other, avoiding many of the limitations of other network topology, thus avoiding unnecessary communication route to the gateway. 称为网络管理器的软件程序(通常运行在网关上)为每个节点分配多个通信路径,这些通信路径可互换以补偿瓶颈和链路故障。 The software program called Network Manager (usually running on the gateway) to assign multiple communication paths for each node, these communication paths are interchangeable to compensate for bottlenecks and link failures. 通过允许相邻节点形成直接到目标节点的通信中继,以及通过绕过故障或瓶颈进行路由,提高了网络响应时间,同时通过最小化中继通信所需的传输数目最小化了网络功率用量。 By allowing a direct to an adjacent node communication relay target node, and routed through the bypass failure or bottlenecks, improve network response time, the number of simultaneous transmissions by minimizing the required relay communication network to minimize power consumption. 使用多个通信路径提供了路径分集,其提高了网络可靠性。 Using multiple communication paths provide a path diversity, which improves network reliability.

[0003] 无线网格网络是由以网格拓扑组织的多个无线设备(即,节点)构成的通信网络。 [0003] The wireless mesh network is a communication network to a plurality of wireless devices (i.e., nodes) organized mesh topology composed of. 在真实的无线网格网络(其也可以称为自组织多跳网络)中,每个设备必须能够路由针对其自己的消息以及针对网络中的其他设备的消息。 In a real wireless mesh network (which may also be called self-organizing multi-hop network), each device must be able to route their own messages and messages for the network for other devices. 网络中的节点到节点的消息跳送(hopping)的概念是有益的,因为可以使用较低功率的RF无线电装置,而且网格网络能够横跨相当大的物理区域,从一端到另一端递送消息。 The concept message to the nodes in the network node hop transmission (hopping) is advantageous, because it can use low power RF radios, and the mesh network can span a significant physical area delivering messages from one end to the other end . 与利用远程设备直接与中央基站通信的点到点系统形成对比,在网格网络中不需要高功率的无线电装置。 Direct contrast with the point system to communicate with a central base station use remote devices do not require high-power radio device in the mesh network.

[0004] 对于针对基于传感器/致动器的应用设计的无线网络系统(诸如无线现场设备网格网络)而言,使用较低功率的无线电装置是必须的。 [0004] based on respect for the sensor / actuator wireless network system (such as a mesh network of wireless field devices) application design, the use of low-power radio equipment is a must. 网络中的许多设备必须本地供电,因为在不引起大的安装代价的情况下,供电设施(诸如120VAC供电设施或者供电数据总线) 不位于仪器、传感器和致动器必须位于的危险位置附近、或者不允许进入仪器、传感器和致动器必须位于的危险位置。 Many network devices must be powered locally because without causing a large installation cost, power supply facilities (such as facilities or 120VAC power supply data bus) is not located near a hazardous location equipment, sensors and actuators must be located, or not allowed to enter the hazardous location equipment, sensors and actuators must be located. “本地供电”意味着由本地电源供电,诸如是便携式电化学电源(例如,长寿命的电池或者燃料电池)或者是低功率能量收集电源(例如,振动、太阳能电池,或者热电发电机)。 "Local Power" by the local power supply means, such as a portable electrochemical power source (e.g., long-life battery or a fuel cell) or low power energy harvesting power supply (e.g., vibration, solar cells, or thermoelectric generator). 本地电源的公共特性是它们的有限的功率容量,或者是如在长寿命电池的情况下存储的有限的功率容量,或者是如在热电发电机的情况下产生的有限的功率容量。 Common features local power is their limited power capacity, or as limited power capacity in the case of long-life battery storage, or limited power capacity, such as in the case of the generation of thermoelectric generator. 通常,低安装成本的经济需求驱动了对电池供电设备的需求,所述设备作为无线传感器网络的一部分进行通信。 Typically, low installation cost demand-driven economy the demand for battery-powered devices, the device as part of a wireless sensor network for communication. 对受限电源(诸如不能再充电的原电池)的有效利用对于无线传感器设备的良好工作是至关重要的。 Efficient use of limited power source (such as a primary battery can not be charged) for the good operation of the wireless sensor device it is essential. 期望电池能维持五年以上,并且优选地维持与产品寿命一样长的时间。 Expect the battery can last more than five years, and preferably maintain as long product life time.

[0005] 为了节省功率,一些无线现场设备网络协议通过仅将其收发器打开有限的时间量以侦听消息,限制任何节点或设备在任何时间段期间能够处理的业务量。 [0005] In order to save power, a number of wireless field devices via network protocols to the transceiver opens only a limited amount of time to listen for messages, limit traffic any node or device during any period of time can be processed. 因此,为了降低平均功率,该协议可以允许实现收发器在“开(ON)”和“关(OFF)”状态之间的占空因素。 Therefore, to reduce the average power, the agreement may allow the transceiver between "open (ON)" and "off (OFF)" state duty factor. 一些无线现场设备网络协议可以使用全局占空因素来节省功率,使得在同一时间整个网络都处于ON或OFF。 Some wireless network protocol field device may use a global duty cycle to save power, at the same time so that the entire network is ON or OFF. 其他协议,诸如基于时分多址TDMA的协议,可以使用局部占空因素,其中在预定的时间仅链接在一起的通信节点对以同步方式被调度为打开或关闭。 Other protocols, such as time division multiple access TDMA-based protocol, you can use a local duty cycle, which at a predetermined time only link together in a synchronized way communication node is scheduled to open or close. 通常,网络管理器向一对节点分配链路、以及用于通信的特定时隙、收发器将使用的RF信道、在该时刻根据需要谁将进行接收、和谁将进行发射(例如,利用RF信道跳变协议的TDMA,诸如WirelessHART®)»网络管理器同步占空因素并且分配多个通信路径,从而协调节点之间的通信,生成控制信号、通信调度和数据查询以适合处境。 Typically, RF channel network manager to allocate a node link, and the specific time slots for communication, the transceiver will be used, who will be received at the required time, and who will transmit (e.g., the use of RF channel hopping protocol TDMA, such as WirelessHART®) »Network Manager to synchronize the duty factor and multiple communication paths assigned to coordinate communication between nodes, generates a control signal, communication scheduling and data queries to fit the situation.

[0006] 网格网络的形成用于设备之间的以及设备和网关之间的通信的备选路径的自组织能力提供了用于无线消息的冗余路径。 Form [0006] The mesh network is used and the self-organization of alternative paths of communication between the device and the gateway device to provide redundant paths between a wireless message. 通过确保即使其他路径受到阻塞或者由于环境影响或由于RF干扰而恶化,都存在至少一条供消息行进的备选路径,这增强了通信可靠性。 By ensuring that even if the path is blocked or due to other environmental effects or due to RF interference and deterioration, there is at least one alternate path for the message to travel, which enhances the reliability of communications. 然而,尽管具有网格网络固有的鲁棒的通信可靠性,来自未知源的RF干扰仍会使网络性能恶化。 However, despite the inherent robustness of the mesh network communication reliability, RF interference from unknown sources is still network performance will deteriorate. 由于减小的范围以及浪费能量的重传,使用备选路径绕过干扰通常导致更多跳数以使得消息去往或来自网关。 Due to the reduced range of retransmissions and wasting energy, using an alternative path to bypass the interference generally results in the number of hops to allow more messages to or from a gateway. 如果RF干扰足够严重,只要RF干扰持续,去往和来自节点的所有传输可能都被阻塞。 If the RF interference is severe enough, as long as the RF interference continued, to and from all transport nodes may have been blocked.

[0007] RF干扰源经常本质上是间歇的和短暂的,使得它们的检测和识别很困难且耗费时间。 [0007] RF interference sources are often intermittent in nature and short-lived, making their detection and identification is very difficult and time-consuming. 实时地检测和定位RF干扰源将允许对源的快速识别和缓减,从而进一步提高网络可靠性。 Real-time detection and locating RF interference sources will allow for rapid identification and mitigation of sources to further enhance network reliability. 已经提出用于监视无线通信网络(诸如蜂窝电话网络)中的干扰的系统,然而由于这些系统的相对高的功率要求,这样的系统通常不适合于无线现场设备网格网络。 Systems have been proposed for monitoring a wireless communication network (such as a cellular telephone network) interference, but due to the relatively high power requirements of these systems, such systems are not generally suitable for wireless mesh network field device. RF现场调查是昂贵的,因为它们需要专用的RF设备和专门训练的人员。 RF site surveys are expensive because they require dedicated RF equipment and specially trained personnel. 即使如此,提供的信息仅是真实RF环境的某个时间的快照,并且可能错过重要的瞬时RF干扰事件。 Even so, the information provided is only a snapshot of a time of real RF environment, and may miss important instantaneous RF interference events. 最后,由于周围的物理工厂和工厂基础设施中的持续变化,以及“工厂围墙外”出现的变化,来自现场调查的数据很快过时。 Finally, due to changes in the physical plant and infrastructure around the plant in the constantly changing, and "factories outside the wall" appears, the data from field surveys soon become obsolete.

发明内容 DISCLOSURE

[0008] 本发明包括一种用于测量和分析无线现场设备网格网络附近和内部的射频(RF) 干扰的系统。 [0008] The present invention includes a method for measuring and analyzing systems nearby and internal mesh network RF wireless field devices (RF) interference. 中央软件模块O^SWM)收集和分析来自无线现场设备网格网络的一个或多个无线设备的、代表在分配的RF信道上的接收RF功率的测量结果的值以及代表对应的RF功率的测量时间的值。 Central software module O ^ SWM) collection and analysis of representative values of one or more wireless devices from the wireless field devices in the mesh network RF measurement channels assigned to receive RF power and representatives of corresponding RF power measurement the value of time. 无线现场设备网格网络的每个无线设备测量分配的RF信道上的接收RF功率和对应的测量时间,存储在与导致无线设备后续发射肯定确认信号或者否定确认信号的信号的接收期间不同的时间进行的测量。 Each wireless device assigned to the wireless field devices measuring mesh network RF channel corresponding to the received RF power and the measurement time, during storage and cause the wireless device subsequent transmission acknowledgment signal or negative acknowledgment signal, the signal received at different times measurements performed. 每个无线设备中存储的RF功率的测量结果和存储的对应的测量时间被用于确定代表RF功率的测量结果的值和代表对应的RF功率的测量时间的值,然后被丢弃。 Values representing the corresponding measurement time are stored in each wireless device RF power measurements and stored to be used to determine the representative of RF power measurements corresponding RF power measurement of time and then discarded. 这些代表值存储在无线设备内,直到无线设备接收到确认这些代表值的成功报告的信号。 These represent the value stored in the wireless device, until the wireless device receives a report confirming successful representative values of these signals. 网络管理器协调无线设备之间的通信,并且协调和同步整个无线现场设备网格网络中的对应的RF功率的测量时间。 Network Manager coordinating communications between wireless devices, and to coordinate and synchronize the entire wireless field devices in the corresponding mesh network RF power measurement time.

附图说明 Brief Description

[0009] 图1是示出本发明的用于测量和分析无线现场设备网格网络附近和内部的RF干扰的实现的示图。 [0009] FIG. 1 is a diagram showing the present invention used to measure and analyze the wireless mesh network near field device and the internal implementation of the RF interference is shown in FIG.

[0010] 图2A-2D示出了针对发射机节点和接收机节点的时隙内的子时隙的互补安排。 [0010] FIG. 2A-2D shows the complementary arrangement for the child timeslots transmitter node and a receiver node within.

[0011] 图3A-3C示出了针对发射机节点和接收机节点的时隙内的“寂静子时隙”的互补安排。 [0011] FIG. 3A-3C shows the complementary arrangement for the transmitter node and the receiver node slots within the "Silent sub-slots" in. [0012] 图4是示出本发明的用于测量和分析具有多个接入点的无线现场设备网格网络附近和内部的RF干扰的实现的示图,无论接入点服务的网格网络的区域是否部分重叠。 [0012] FIG. 4 is a diagram showing the measurement and analysis of wireless field devices near the mesh network and internal RF interference has multiple access points to the present invention achieves a diagram, regardless of the mesh network access point service whether the region partially overlap.

具体实施方式 DETAILED DESCRIPTION

[0013] 将在测量和分析具有网格网络拓扑的无线现场设备网络附近和内部的射频(RF) 干扰方面描述本发明。 [0013] The present invention will be described in the vicinity of measurement and analysis and internal RF mesh network topology with a wireless field device networks (RF) interference terms. 本领域技术人员将认识到,本发明同等适合于其他网络拓扑,并且不是仅限于所描述的实施例,相反,本发明将包括落在所附权利要求的范围内的所有实施例。 Those skilled in the art will recognize that the present invention is equally suitable for other network topologies, and is not limited to the embodiments described, but rather, the present invention will include all embodiments falling within the scope of the appended claims.

[0014] 本发明使用在无线设备可获得的接收RF功率测量能力来检测RF干扰源,所述无线设备诸如是那些服从IEEE 802. 15. 4标准的无线电装置的无线设备。 [0014] The present invention is for use in receiving RF power measurement capability available to the wireless device detects RF interference source, the wireless device is a wireless device, such as those subject to IEEE 802. 15. 4 standard radio apparatus. IEEE 802. 15. 4标准定义了用于与具有极高限制的功耗要求的固定设备、便携设备和移动设备的低数据速率的无线连接的物理层(PHY)和介质接入控制(MAC)层。 IEEE 802. 15. 4 standard defines the physical layer (PHY) and media access control (MAC) low data rate for fixed equipment and has a very high limit power requirements of portable and mobile devices wireless connection layer. 该极高限制的功耗要求例如是远小于蜂窝电话的功耗要求。 The extremely limited power requirements, for example, is much smaller than a cell phone power requirements. 符合IEEE 802. 15. 42. 4GHz标准的无线电装置在2. 4GHz的工业、科研和医疗(ISM)无线电频带内的16个RF信道中的任何一个上进行发射和接收,并且能够测量任何信道上的接收RF功率。 Radio device complies with IEEE 802. 15. 42. 4GHz standards within 2. 4GHz of industrial, scientific and medical (ISM) radio bands any 16 RF channels on transmit and receive, and be able to measure any channel The received RF power. 在该标准中,接收RF功率测量功能被称为能量检测(ED),但是更经常被称为接收信号强度指示符(RSSI)测量。 In this standard, the received power measurement is called RF energy detection (ED), but more often referred to as received signal strength indicator (RSSI) measurement. IEEE 802. 15. 4标准描述了RSSI测量的两个应用。 IEEE 802. 15. 4 standard describes two applications RSSI measurement. 第一个是作为纯信道评估(Clear ChannelAssessment)功能的一部分,以避免相同无线网络的成员的不必要的RF干扰。 The first is part of the Clear Channel Assessment (Clear ChannelAssessment) function to avoid members of the same wireless network unnecessary RF interference. 作为CCA功能的一些模式中的部分, 发送设备在刚好要开始发射之前测量RF信道上的RSSI,以确保分配的传输信道上没有其他网内传输。 Some models CCA functions as part of the transmission device just prior to start transmitting measured RSSI RF channel, the transmission channel allocated to ensure that no other network transmission. 如果RF信道上的RSSI测量高于阈值,这指示网络中的附近设备已经在信道上进行发射,则可能成为干扰的设备将发射延迟一个随机的时间间隔,以避免引起对已经被占的信道的干扰。 If the RF channel RSSI measurements above the threshold, which indicates that the network device is transmitting nearby on the channel, the device may become interference will launch delay for a random time interval to avoid already occupied channels interference. CCA功能通常不与诸如WirelessHART®之类的利用信道跳变协议的时分多址(TDMA) —起使用,因为所有的通信通常由网络管理器进行同步和协调,使得没有邻近设备会在相同时间在相同RF信道上进行发射。 CCA function not normally associated with such use channel hopping like WirelessHART® time division multiple access protocol (TDMA) - used together, since all communications are often synchronized and coordinated by the network manager, so that no neighboring device at the same time the same RF channel for transmission.

[0015] 在第二应用中,一些网络管理算法使用接收信号的强度来确定在设备之间的链路上要使用的最佳的具体RF信道。 [0015] In the second application, some network management algorithm using the received signal strength to determine the best specific RF channel on the link between the devices to be used. 如果RSSI读数开始减小,则网络管理器可以选择不同的RF信道用于设备之间的操作,以确保持续的链路可靠性。 If the RSSI reading begins to decrease, the network manager can select a different RF channel for operating devices, in order to ensure the continued reliability of the link. 备选地,一个链路上的所有RF信道的RSSI读数被联合和平均,以确定用于消息在网络上路由的最强链路。 Alternatively, RSSI reading all RF channels on a link is joint and averaged to determine the strongest link message is routed in the network. 仅成功传输或者由于预定错误条件造成的不成功的传输的接收信号强度被无线设备存储和报告给网络管理器,原因是它们代表在网内通信期间呈现的RF信道条件,即使其包括来自其他RF源的干扰能量。 Only successfully transmitted or received signal strength due to the predetermined error condition caused by an unsuccessful transmission is stored and reported to the radio network manager, because they represent the period of presenting a communication network RF channel conditions, even if it comprises from other RF interference energy source.

[0016] 成功传输由从接收节点到发射节点的返回传输(称为肯定确认信号或ACK)来确认。 [0016] successfully transmitted by the receiving node to the transmitting node from a return transmission (called positive acknowledgment signal or ACK) to confirm. 在接收到ACK响应时,发射节点删除原先发射的消息,接着接收节点负责将消息转发给网格网络中的下一跳。 Upon receipt of the ACK response, the transmitting node delete messages previously transmitted, the receiving node then forwards the message to be responsible for the next hop mesh network. 由于某些预定错误条件造成的不成功的传输导致从接收节点向发射节点发送否定确认信号或NACK。 Unsuccessful transmission due to some error condition caused by a predetermined result is sent from the receiving node to the transmitting node negative acknowledgment signal or NACK. 当接收到NACK响应时,发射节点将在它的下一个调度时隙上在不同的RF信道或不同的节点上重传消息,但是将不删除原先发射的消息,直到其接收到来自目的节点的ACK响应。 Upon receiving the NACK response, the transmitting node will in its next scheduled time slot on different channels or different nodes RF retransmit the message, but will not delete the messages previously transmitted until it is received from the destination node ACK response.

[0017] 导致NACK响应的预定的错误条件在不同的无线协议中有所不同。 [0017] predetermined error condition causes NACK response vary in different wireless protocols. 在一些协议中, 导致NACK响应的条件包括例如接收节点中的满的消息缓存器、帧校验和错误、以及消息完整性码错误。 In some agreements, leading to conditions such as NACK response comprises receiving node message buffer is full, the frame check and error, and a message integrity code error. 不导致ACK或NACK响应的不成功的传输在不同的无线协议中也有所不同,并且可以是例如由于帧校验和错误、消息完整性码错误、错误的网络ID、或者信号太弱或过于畸变使得接收节点难以检测到信号的确被发送。 Does not result in successful transmission ACK or NACK response is also different in different wireless protocols, and can be, for example due to the frame checksum error, message integrity code, incorrect network ID, or the signal is too weak or too distorted so that the receiving node is indeed difficult to detect the signal transmitted. 取决于针对具体无线协议的预定的错误条件,一些错误条件(例如帧校验和错误)在一些无线协议中导致NACK响应,而在另一些协议中不导致NACK响应。 Depending on the specific error conditions for a predetermined wireless protocol, a number of error conditions (such as frame checksum error) causes NACK response in some wireless protocols, while in other agreements do not result NACK response. 在所有情况下,不满足协议的预定的错误条件的不成功传输被忽略:不发送任何ACK或NACK,并且删除与该时间关联的RSSI测量。 In all cases, unsuccessful transmission does not satisfy a predetermined error condition is ignored protocol: does not send any ACK or NACK, and delete the RSSI associated with the measurement time.

[0018] 本发明使用无线设备通过下述方式来测量在无线现场设备网格网络附近和内部的RF干扰:记录和分析在一段时间上使用的每个RF信道上的RSSI测量,该RSSI测量是在与导致无线设备后续发射ACK或者NACK响应的信号的接收期间不同的时间中进行和记录的。 [0018] The present invention uses a wireless device measured in the following manner in the vicinity of the mesh network of wireless field devices and internal RF interference: Each RF channel RSSI measurements recorded and analyzed over a period of time using the RSSI measurements performed and recorded in the period leading to the receiving wireless device subsequent transmission ACK or NACK response signals in different time. 这是在所谓的网内寂静时间期间,在此期间最容易且精确地检测背景或者外部RF干扰。 This is called the network during the silence period, during which most easily and accurately detected or external RF background interference. 3个可能的网内寂静时间是开放侦听、开放信道时隙和寂静子时隙,将在下文描述。 3 possible time within the network is open to listen for the silence, the silence of the open channel slot and sub-slot, which will be described below.

[0019] 使用利用信道跳变协议的TDMA数据链路层(诸如WirelessHART®)且具有其鲁棒设计的网格网络非常适合于测量、收集、报告和分析来自不同节点的RSSI测量。 [0019] The use of channel hopping TDMA data link layer protocols (such as WirelessHART®) and having a mesh network of their robust design is well suited for measuring, collecting, reporting and analysis of RSSI measurements from different nodes. 由网络管理器针对链路级通信分派时隙,并且在全网内时隙同步到1毫秒内,使得能够精确控制RSSI测量时间和后续的RSSI测量数据的相关性。 Dispatched by the network manager for the link-level communication slot, and in the whole network slot synchronization to within 1 millisecond, making it possible to precisely control the relevance of RSSI measurement time and subsequent RSSI measurement data. 网络管理器还通过直接或者间接地为时隙中的每个分派的链路分配信道来协调RF信道分配。 Network Manager also distributed through direct or indirect distribution channel to link slots assigned to coordinate each RF channel. 作为由网络管理器控制的时间同步机制的一部分,设备被预编程为基于绝对时隙号(其在整个网格网络中递增)来改变RF信道,因此通常在任何时隙内没有两条链路使用相同的RF信道。 As part of the time synchronization mechanism controlled by a network manager, the device is preprogrammed based on absolute slot number (which is incremented throughout the mesh network) to change the RF channel, so usually no two links in any slot Using the same RF channel. 该信道跳变是伪随机的,意味着设备以类似随机的顺序改变信道,最终同等地使用所有RF信道。 The channel hopping is a pseudo-random, means that the device in a similar random order to change the channel, and ultimately equal access to all the RF channels.

[0020] 本发明的无线设备在网内寂静时间期间进行的RSSI测量和对应的测量时间被存储在进行测量的无线设备内,直到它们被用于确定代表接收RF功率的测量结果的值和代表对应的测量时间的值。 [0020] RSSI measurements within the measurement time and the corresponding radio apparatus of the present invention within the network during a time of silence during the measurement is stored wireless devices until they are used to determine the representative of the received RF power measurement value representing the corresponding value of the measurement time. 确定代表接收RF功率的测量结果的值例如包括确定统计值、执行单位转换、或者根本不对原始RSSI测量进行任何改变。 Determining a value representative of the power of the received RF measurements, for example, include determining the statistical value, perform unit conversion, or simply does not make any change in the raw RSSI measurements. 每个RF信道的统计值例如包括测量的平均RF功率、测量的RF功率的标准偏差、测量的RF功率的方差、时间段的开始时间、 时间段的结束时间、测量的最大RF功率、测量到最大RF功率的时间、测量的最小RF功率、 以及测量到最小RF功率的时间、以及占空因素。 Statistical values for each RF channel, for example, including the average RF power measurement, the maximum standard deviation of the measured RF power RF power measurement of RF power of variance, the start time of the time period, the end of the time period, measured, measured The maximum RF power time, the minimum RF power measurement, and measuring RF power to the minimum time, and duty cycle. 逐个信道地确定代表RF功率的测量结果的值,最终覆盖ISM频带,从而代表某个具体设备的周围的RF能量。 By-channel basis to determine the value representing the measurement results of RF power, eventually covering the ISM band, thus representing a particular RF energy around the device. 这些代表RF功率的测量结果的值通常代表每个信道的背景RSSI测量级别。 These values represent the RF power measurements are generally representative of the background RSSI measurement level of each channel. 代表接收RF功率的测量结果的值超过背景RSSI测量级别则指示RF干扰源。 Represents the measured results of the reception of RF power measurement RSSI value exceeds the background level indicates that RF interference sources. 定期地或者根据要求在报告中将代表接收RF功率的测量结果和对应的测量时间的值通过网格网络发射给中央软件模块CSWM,该中央软件模块通常运行在网关上。 Upon request or periodically transmit the measurement results of the received RF power values reported in the representative and corresponding measurement time through the mesh network to a central software modules CSWM, the gateway software module on the central normal operation. 来自每个设备的报告的发射以交错的方式进行调度,使得对网络的正常操作没有显著影响。 Emission reports from each device in a staggered manner scheduling so that normal operation of the network had no significant effect. CSWM通过RF信道将代表RF功率的测量结果的值的报告进行联合,并且将来自多个设备的对应的测量时间进行相关。 CSWM reported value through RF channel RF power measurements will represent the joint, and the corresponding measurement time from multiple devices related. 与至少三个设备的已知位置一起, CSWM确定干扰的时间段,特性化一个或多个干扰源(例如,Wi-Fi信道1),定位该一个或多个干扰源、以及如果干扰超过用户定义的阈值则生成警报。 At least three known positions with the device together, CSWM determining interference period, characteristic of one or more interfering sources (e.g., Wi-Fi channel 1), positioning the one or more interfering sources, and if the interference exceeds a user defined threshold an alarm is generated. CSWM优选地将任何干扰信息和警报传送给运行在主计算机上的分离的软件应用或者系统操作员使用的显示器。 CSWM preferable to transmit any interference information and alerts to run separate software on the host computer application or system operator uses the display.

[0021] 在干扰严重到足以临时使得一个无线设备丧失与无线现场设备网格网络中的其他无线设备进行通信的能力的情况下,附近的无线设备将仍能够检测干扰,并通过无线现场设备网格网络中仍然工作的链路向CSWM返回关于代表接收RF功率的测量结果和对应的测量时间的值的报告。 [0021] In the interference is serious enough to make a wireless device temporarily lose the ability to communicate with the case of wireless field devices in a mesh network to other wireless devices, the nearby wireless devices will still be able to detect interference and field devices through wireless network link grid network is still working to return the report on measurement results represent the received RF power and the corresponding measurement time to CSWM. 通过将来自附近的无线设备的代表RF功率的测量结果和对应的测量时间的值相关,以及结合至少三个设备的已知位置,即使在干扰严重到足以临时禁用无线设备时,本发明也能够通过使用标准三角算法来确定禁用RF干扰源的位置。 By value measurements from nearby wireless devices on behalf of RF power and the corresponding time-related measurements, and a combination of at least three known locations of equipment, even in noisy enough to temporarily disable a wireless device, the present invention can also be determining RF interference source is disabled position using standard triangulation algorithm.

[0022] 通过仅报告统计信息而不是每个记录的测量结果,以及通过仅定期发射报告,例如每隔15分钟,本发明最小化了提供对整个网络上的RF干扰的基本连续的检测和报告所需的能量。 [0022] by reporting statistical information only and not the measurement results for each record, as well as by periodic emission reports only, such as every 15 minutes, the present invention provides for minimized substantially continuous testing and RF interference across the entire network report The energy required. 因为检测是基本连续的,所以间歇和瞬时的RF干扰源被定位和识别。 Because detection is substantially continuous, intermittent, and so instantaneous RF interference source is located and identified. 如上面提到的,在无线现场设备网络中,最小化能量使用率是关键的。 As mentioned above, in the wireless field device networks, minimize energy usage is critical. 下面描述的在网内寂静时间期间的测量结果在记录和向CSWM发射测量的频次方面存在变化,伴随能量使用率的对应变化。 During the silent period measurements described below in the presence of the network in terms of frequency and record changes to CSWM emission measurements, with a corresponding change in energy usage. 通过在开放侦听、开放信道时隙、以及寂静子时隙测量之间变化,能够相对于所需的能量使用率,平衡针对更积极的干扰检测和定位的需求。 By opening listener, open channel time slot, and changes in the sub-slots between silence measurement, with respect to the utilization of the energy required, more positive balance for interference detection and location requirements.

[0023] 图1是示出本发明的用于测量和分析无线现场设备网格网络附近和内部的RF干扰的实现的示图。 [0023] FIG. 1 is a diagram showing the present invention is used for measurement and analysis of wireless field devices and internal mesh network RF interference near the realization of a diagram. 图1示出了控制和过程监视系统10,其包括主计算机12、高速网络14、 网关16、以及无线现场设备网格网络18。 Figure 1 shows a control and process monitoring system 10 includes a host computer 12, a high-speed network 14, a gateway 16, and 18 mesh network wireless field devices. 无线现场设备网格网络18包括无线设备或节点20a-20i...20N以及接入点22。 Wireless field device 18 includes a wireless mesh network devices or nodes 20a-20i ... 20N and the access point 22. 网关16包括网络管理器M和CSWM 26,尽管网络管理器M 和CSWM沈中的任意一个或二者可以驻留在主计算机12上。 Gateway 16 includes a network manager M and CSWM 26, although the network manager M and CSWM sink either one or both may reside on the host computer 12. 主计算机12包括软件应用四。 The host computer 12 includes software applications IV. 软件应用四例如是控制软件或者监视软件。 Four software applications such as control software or monitoring software. 网关16通过高速网络14连接网格网络18和主计算机12。 Gateway 16 is connected via high-speed network 14 mesh network 18 and host computer 12. 接入点22是网关16和无线设备20a-20i. . . 20N之间的接口。 The access point 22 is the interface between the gateway 16 and wireless devices 20a-20i... 20N between. 专用链路28将接入点22连接到网关16。 28 access point dedicated link 22 is connected to the gateway 16. 备选地,接入点22可以与网关16集成在一起,从而不需要专用链路观。 Alternatively, the access point 22 may be integrated with the gateway 16, so that no dedicated link View. 接入点22和无线设备20a-20i. . . 20N使用具有接收RF功率测量能力的无线电装置, 诸如符合IEEE 802. 15. 4标准的无线电装置。 22 access points and wireless devices 20a-20i... 20N using a radio device having received RF power measurement capabilities, such as compliance with IEEE 802. 15. 4 standard radio. 接入点22和无线设备20a_20i. . . 20N还使用用于存储值和执行基本统计计算的电路,诸如现有技术中已知的电路。 22 access points and wireless devices 20a_20i... 20N also use to store values and perform basic statistical computing circuit, such as known in the art circuit. 接入点22和无线设备20a-20i... 20N彼此通信,作为使用利用信道跳变协议的TDMA(诸如wirelessHART® )的无线网格网络。 22 access points and wireless devices 20a-20i ... 20N communicate with each other, as the use of the use of channel hopping protocol TDMA (such as wirelessHART®) wireless mesh network. 可选地,接入点22或至少一个无线设备20a-20i...20N均还分别包括本地操作员接口(L0I)23、21。 Alternatively, the access point 22 or at least one wireless device 20a-20i ... 20N are further respectively comprise Local Operator Interface (L0I) 23,21. LOI 23、21包括显示器和有限的输入功能,通常是少量的按钮。 LOI 23,21 includes a display and limited input, usually a few buttons. 在图1中还示出了RF干扰源Rl。 In Figure 1 also shows a source of RF interference Rl.

[0024] 消息通过高速网络14从主计算机12传送到网关16。 [0024] The message 14 transmitted through the high-speed network from the host computer 12 to the gateway 16. 目的地为无线现场设备网格网络18的无线设备20a-20i. . . 20N之一的消息通过专用链路28从网关16发送给无线现场设备网格网络18的接入点22。 The destination is a wireless field devices 18 mesh network of wireless devices 20a-20i... 20N, one of the messages sent via a dedicated link 28 from the gateway to the wireless field device 16 mesh network access point 18 22. 然后,接入点22直接地或者以逐跳的方式通过若干不同路径中的一条路径将消息发射给无线现场设备网格网络18的无线设备20a-20i. . . 20N中的所述之一。 Then, the access point 22, either directly or by-hop way through several different paths one path will transmit a message to one of the wireless field device mesh network of wireless devices 18 20a-20i... 20N. 类似地,来自无线现场设备网格网络18的无线设备20a-20i. . . 20N之一的消息通过若干路径中的一条路径逐节点地往回路由通过无线现场设备网格网络18,直到它到达接入点22。 Similarly, a wireless device from the wireless field devices 18 mesh network 20a-20i... 20N message through one of several paths back to a path routing through the node by the wireless mesh network field device 18, until it reaches the the access point 22. 接着,接入点22通过专用链路观将消息发送给网关16。 Then, the access point 22 via a dedicated link to send a message to the gateway concept 16. 目的地为主计算机12的消息通过高速网络14从网关16传送到主计算机12。 Message destination host computer 12 14 transferred to the host computer 12 through the high-speed network from the gateway 16. 由网络管理器M分派为了协调整个无线现场设备网格网络18上的通信所需的节点之间的时隙、链路分配、以及RF信道分配。 Assigned by the network manager M in order to coordinate the entire wireless mesh network field device slots, link assignment required for communication between nodes 18, and RF channel allocation. 针对无线现场设备网格网络18的时隙和RF信道分派和链路分配经由专用链路28从网关16发送到接入点22。 28 16 sent from the gateway for wireless field devices and RF mesh network time slot assignment and link distribution channel 18 via a dedicated link to the access point 22. 接入点22直接地或者以逐跳的方式将时隙分配、RF信道分配和链路分配发射给无线设备20a-20i. . . 20N。 The access point 22, either directly or by-hop manner slot allocation, assignment and link assignment RF channel transmission to the wireless device 20a-20i... 20N.

[0025] 本发明的用于在网内寂静时间期间执行和记录RSSI测量的情况下检测RF干扰的一个实施例是在“开放侦听”期间。 One embodiment for detecting RF interference in the case of performing the network and records the RSSI measurements during silent time [0025] of the present invention is in the "open listeners." 开放侦听包括接收节点期待收到信号,但是发射节点没有发送信号的那些时间。 Open listener look forward to receiving the signal comprises receiving node, the transmitting node but not those time signals transmitted. 这种情况的发生可能简单地因为发射节点在其分配的时隙到达时可能没有任何消息要发射。 This situation may occur simply because the transmitting node may not have any messages during its assigned time slot to be transmitted arrives. 在利用信道跳变协议的TDMA(诸如wirelessHART®)中,网络管理器将调度给一对节点分配链路以传送消息的多个时间或时隙。 Using channel hopping protocol TDMA (such as wirelessHART®), the network manager will schedule multiple times or time slots allocated to a pair of nodes link to transmit the message. 这增强了网络可靠性, 以确保消息通过网络。 This enhances network reliability to ensure that the message through the network. 如果第一链路分配不工作,则第二或第三链路分配应该工作。 If the first link does not work assignment, the second or third link assignment should work. 然而, 经常,消息在第一次尝试上的通过被确认,并且接着由发送节点删除消息。 However, often, a message on the first attempt is confirmed by, and then delete the message by the sending node. 该可能留下开放侦听链路,其中接收节点将侦听以及在侦听时进行RSSI测量,但是发射节点将没有任何消息要发送。 The listener may leave open the link, wherein the receiving node will listen as well as RSSI measurements when the listener, but the transmitting node will have no message to be sent. 通常,因为在无线现场设备网格网络18中没有任何其他设备被调度在该时隙中在该具体RF信道上进行发射,因此RSSI测量将指示背景RF噪声级别或者RF干扰的存在, 而不是网内业务。 Typically, because no other devices are scheduled to transmit in the time slot in this specific RF channel in a wireless field device in the mesh network 18, thus indicating the presence of RSSI measurement RF background noise level or RF interference, rather than network within the business. 没有任何消息要在该时隙发送的发射节点也可以激活其无线电装置,并且在分配的RF信道上进行RSSI测量。 There is no message to be sent in the time slot transmitting node can also activate their radio equipment, and carry out the assigned RF channel RSSI measurements. 因此,与一个链路关联的两个设备可以使用其链路级知识,在相同时间从两个不同位置在相同RF信道上进行协调的RSSI测量。 Therefore, a link is associated with both devices can use its link-level knowledge, at the same time from two different locations in the same coordinate measuring RSSI RF channel.

[0026] 开放侦听还包括接收节点期待信号且发射节点发送信号、但是出于上面描述的原因既没回送ACK响应也没回送NACK响应的那些时间。 [0026] Open listener expectations signal further comprises receiving node and a transmitting node sends a signal, but for the reasons described above, neither Echo ACK response did not echo those times NACK response. 从接收节点的角度看,这看起来是网内寂静时间,因为检测不到任何可识别的网内传输。 From the perspective of the receiving node view, this seems to be the network silence time, because not detect any network transmission can be identified. 在这些情况下进行的RSSI测量可能不指示纯的背景RF噪声级别,因为发射节点确实在该分配的RF信道上发射了一些内容,但是这样的RSSI测量提供了关于可能已经引起传输故障的RF干扰源的重要信息。 RSSI measurement in these cases may not be indicative of the pure RF background noise level, since the transmitting node does transmit RF channels allocated some content, but this provides information on the RSSI measurements may have been caused by transmission error of RF interference Important sources of information.

[0027] 图2A和2B示出了在导致接收无线设备发射ACK响应或者NACK响应的信号的接收期间的、分别针对发射机节点和接收机节点的时隙内的子时隙的互补安排。 [0027] Figures 2A and 2B illustrate the receiving device during a receiving wireless transmit ACK cause a response or NACK response signal, respectively, arranged for complementary sub-time slots of the transmitter node and the receiver node within. 在参考图2A-2D 以及3A-;3B时,“Tx”表示发射,“Rx”表示接收。 In reference to FIG. 2A-2D and 3A-; when 3B, "Tx" indicates emission, "Rx" indicates the reception. 每个分派的时隙具有指定的发射机节点和指定的接收机节点。 Each assigned time slot having a transmitter and a receiver node at the specified node specified. 时隙由可变长度和类型的子时隙的安排组成,所述安排支配在该时隙内发射机和接收机采取的动作的定时。 Slot by a variable length and type of sub-slot arrangement composed the arrangement governed during the time slot timing of the transmitter and receiver to take action. 该安排在链接的节点之间是互补的,并且不断地重复。 The arrangement of links between nodes are complementary, and repeat. 如图2A所示,发射机时隙30a开始于Tx偏移子时隙32a,后面跟着Tx子时隙34a。 2A, the transmitter Tx slot 30a starts at offset sub-slots 32a, followed Tx sub-slot 34a. Tx子时隙34a后跟着I1x到Rx子时隙36a,继而在1Tx到Rx子时隙36a后跟着ACk/NACK侦听子时隙38a和Tx空子时隙42a。 Tx sub-slot 34a is followed I1x to Rx sub-slots 36a, then in 1Tx to Rx sub-slot 36a is followed ACk / NACK listener sub-slots 38a and Tx empty slot 42a. 图2B示出了接收机时隙50a,其开始于Tx侦听子时隙Ma,其后跟着Rx到Tx子时隙56a,Tx ACK/NACK子时隙58a、以及Rx空子时隙60a。 2B illustrates a receiver slot 50a, which starts at Tx listener subslot Ma, subsequently followed Rx to Tx sub-slots 56a, Tx ACK / NACK sub-slots 58a, and Rx empty slot 60a. 发射机时隙30a和接收机时隙50a实际上是分别从发射机节点和接收机节点观察的相同的网络时隙。 The transmitter and receiver slot slot 30a 50a is actually the same network time slots, respectively, from the transmitter node and a receiver node observed.

[0028] 在接收机时隙50a的开始处,接收机节点打开其无线电装置,并且在Tx侦听子时隙5½期间侦听来自发射机节点的任何传输。 [0028] In the beginning of the slot 50a of the receiver, the receiver node to open its radio and listen for any transmission from a transmitter node listens for the child during the Tx slot 5½. 在该时间期间,在发射机时隙30a的开始,发射机节点是寂静的,将任何传输延迟Tx偏移子时隙32a。 During this time, at the beginning of the slot 30a of the transmitter, the transmitter node to be still, to offset any transmission delay Tx sub-slots 32a. Tx偏移子时隙3¾的长度至少等于最大的网络时间同步误差。 Tx offset sub-slot 3¾ length at least equal to the largest network time synchronization errors. 这确保了直到接收机节点准备好侦听时,发射机节点才开始发射。 This ensures that until the receiver node is ready to listen, the transmitter node began to launch. 在Tx偏移子时隙3¾之后,发射机节点的无线电装置被打开并且在Tx子时隙34a 期间进行发射。 After Tx offset sub-slot 3¾, radio transmitter node is open and during Tx sub-slots 34a launch. Tx子时隙34a的长度足够容纳数据分组,包括伴随数据的所有的报头和尾部字节。 Tx sub-slot length 34a large enough to accommodate a data packet, including all the accompanying data header and trailer bytes. Tx侦听子时隙Ma的长度由Tx子时隙34a的长度加上至少两倍的网络时间同步误差来确定。 Ma listens Tx sub-slot length by the length of the Tx sub-slots 34a, plus at least twice the network time synchronization error to determine. 这确保了,无论最大网络时间同步误差的方向如何,Tx子时隙3½将全部落在Tx侦听子时隙Ma内。 This ensures that, regardless of the direction of maximum network time synchronization error, Tx sub-slots 3½ all fall within the sub-slot Tx listener Ma. 在Tx侦听子时隙5½期间,接收机使用上面描述的ED功能来执行RSSI测量,并且存储测量结果以及测量时间和RF信道。 Listens during Tx sub-slots 5½, the receiver uses ED function described above to perform RSSI measurements and store the measurement results and the measurement time and RF channels. 在Tx子时隙3½之后,在Tx到Rx 子时隙36a期间发射机节点将其无线电装置从发射切换到接收,接着在ACk/NACK侦听子时隙38a期间开始侦听来自接收机节点的ACK或NACK响应。 After the Tx sub-slot 3½, the transmitter Tx to Rx node during sub-slots 36a which is switched from the radio transmitter to the receiver, then during ACk / NACK sub-slots 38a listener from the receiver node begins listening ACK or NACK response. 如果在Tx侦听子时隙5½期间接收机节点成功接收数据分组,则在Rx到Tx子时隙56a期间接收机节点将其无线电装置从接收切换到发射,接着在TxACK/NACK子时隙58a期间开始向发射机节点发送ACK响应。 If successfully received data packet Tx sub-slot receiver node listens during the 5½, then the sub-slot receiver Rx to Tx node 56a during its switch from the received radio transmitter, followed TxACK / NACK sub-slot 58a ACK response to the transmitter begins sending node periods. 备选地,如果在Tx侦听子时隙5½期间接收机节点由于预定的错误条件没有成功接收数据分组,则在Rx到Tx子时隙56a期间接收机节点将其无线电装置从接收切换到发射,接着在Tx ACK/NACK子时隙58a期间开始向发射机节点发送NACK响应。 Alternatively, the receiver listens for the child node if the receiver node in Tx time slot 5½ predetermined error condition is not due to the successful reception of the data packet, then the sub-slots 56a Rx to Tx during its switch from the received radio transmitter Then in Tx ACK / start sending to the transmitter node NACK sub-slots 58a NACK during the response. 在任何情况下,在TxACK/ NACK子时隙58a之后,接收机节点保留存储的RSSI信息供在网络管理算法中使用以确定要用在设备之间的链路上的最佳的具体RF信道,关闭其无线电装置,并且在Rx空子时隙60a 期间等待下一个时隙的开始。 In any case, after TxACK / NACK sub-slots 58a, RSSI information receiver nodes remain stored for use in network management algorithm to determine the optimal use of specific RF channel on the link between devices, shut down its radio equipment, and waiting for the start of the next slot during the Rx empty slot 60a. ACK/NACK侦听子时隙38a足够长以容纳至少Rx到Tx子时隙56a和Tx ACK/NACK子时隙58a的长度。 ACK / NACK sub-slots 38a listens long enough to accommodate at least the length of Tx Rx sub-slots 56a and Tx ACK / NACK sub-slots 58a of. 这确保了iTx ACK/NACK子时隙58a全部落在ACK/ NACK侦听子时隙38a内。 This ensures iTx ACK / NACK sub-slots 58a all fall within the ACK / NACK listener sub-slot 38a. 在ACK/NACK侦听子时隙38a之后,发射机节点关闭其无线电装置,并且在Tx空子时隙4¾期间等待下一个时隙的开始。 After the ACK / NACK listener sub-slot 38a, shut down its radio transmitter node, and waiting for the start of a slot in the next 4¾ empty slot during Tx.

[0029] 图2C-2D示出了在发射机节点没有任何消息要发送时的开放侦听实施例的分别针对发射机节点和接收机节点的时隙内的子时隙的互补安排。 [0029] FIG. 2C-2D shows no difference in the transmitter node complementary arrangements for child timeslots transmitter node and a receiver node within the open listening to any message to send when the embodiment. 因为作为发起无线设备的发射机节点没有任何消息要发射,这不会导致作为目的地无线设备的接收机后续发射ACK或NACK响应。 Because, as initiated by the wireless device transmitter node has no message to be transmitted, this will not lead to a subsequent radio receiver destination transmit ACK or NACK response. 图2C示出了发射机时隙30b,其开始于Tx偏移子时隙32b,后面跟着Tx开放侦听62,该Tx开放侦听62后面跟着Tx空子时隙42b。 Figure 2C shows a transmitter slot 30b, which starts at Tx offset subslot 32b, followed Tx open listener 62 listens rear opening 62 along the Tx Tx empty slot 42b. 图2D示出了接收机时隙50b,其开始于Tx侦听子时隙Ma,后面跟着Rx空子时隙60b。 Figure 2D shows a receiver slot 50b, which starts at Tx listener subslot Ma, followed Rx empty slot 60b. 发射机时隙30b和接收机时隙50b实际上是分别从发射机节点和接收机节点观察的相同的网络时隙。 The transmitter and receiver slot slot 30b 50b are actually the same network time slots, respectively, from the transmitter node and a receiver node observed.

[0030] 在接收机时隙50b的开始处,接收机节点打开其无线电装置,并且在Tx侦听子时隙54b期间侦听来自发射机节点的任何传输,如针对图2B所描述的那样。 [0030] In the beginning of the time slot 50b of the receiver, the receiver node to open its radio, and listens for any transmissions from the transmitter node, as described for FIG. 2B listens during Tx sub-slots 54b. 在该点处,接收机节点不知道发射机没有任何消息要发送,并且使用上面描述的ED功能来执行RSSI测量, 存储测量结果以及测量时间和RF信道。 At this point, the receiver transmitter node does not know there is no message to send, and the use of ED function described above to perform RSSI measurement, storage measurement results and the measurement time and the RF channel. 在Tx侦听子时隙54b期间没有成功接收到数据分组的接收机节点不将其无线电装置从接收切换到发射。 During the Tx sub-slots 54b listener does not successfully received data packet to the receiver node is not received from the radio transmitter apparatus is switched. 相反,其关闭无线电装置,保留存储的RSSI信息供在检测RF干扰时使用,并且在Rx空子时隙60b期间等待下一个时隙的开始。 Instead, turn it off radio, RSSI information retention stored for use in the detection of RF interference, and waiting for the start of the next slot during the Rx empty slot 60b. 在该时间期间,在发射机时隙30b的开始处,发射机节点将任何活动延迟Tx偏移子时隙32b。 During this time, the beginning of the slot at the transmitter 30b, the transmitter node Tx delay any activity offset sub-slot 32b. Tx偏移子时隙32b的长度至少等于最大的网络时间同步误差。 Tx sub-slot 32b offset length at least equal to the largest network time synchronization errors. 在Tx偏移子时隙32b之后,在Tx开放侦听62期间,没有任何消息要发送的发射机节点打开其无线电装置, 并且使用上面描述的ED功能来执行RSSI测量,存储测量结果以及测量时间和RF信道。 Tx offset in sub-slot 32b after opening listeners during Tx 62, no transmitter node to send any message to open its radio and use ED function described above to perform RSSI measurement, storage measurement results and the measurement time and RF channels. 在Tx开放侦听62之后,发射机节点保留存储的RSSI信息供在检测RF干扰时使用,关闭其无线电装置,并且在Tx空子时隙42b期间等待下一个时隙的开始。 After opening the listener 62 Tx transmitter node reserves RSSI information stored for use in the detection of RF interference, turn off its radio equipment, and waiting for the start of the next slot in the empty slot 42b during Tx.

[0031] 图2A和2D示出了在开放侦听实施例中的分别针对发射机节点和接收机节点的时隙内的子时隙的互补安排,在所述开放侦听实施例中接收机节点期待信号并且发射机节点发送信号,但是由于传输不成功或者故障不满足使用的协议的预定的错误条件,既不发送ACK响应也不发送NACK响应。 [0031] FIG. 2A and the receiver 2D example is shown in the open listener embodiments are complementary to arrange for child timeslots transmitter node and a receiver node within, in the implementation of the open listener and look forward signal transmitter node node sends a signal, but because the predetermined error condition or failure to satisfy the unsuccessful transmission protocol used, does not send ACK response is not sent NACK response. 从接收节点的角度看,这看起来是网内寂静时间,因为检测不到任何可识别的网内传输。 From the perspective of the receiving node view, this seems to be the network silence time, because not detect any network transmission can be identified. 在接收机时隙50b的开始处,接收机节点打开其无线电装置,并且在Tx侦听子时隙54b期间侦听来自发射机节点的任何传输(如图2B所示),使用上面描述的ED功能来执行RSSI测量,并且存储测量结果以及测量时间和RF信道。 At the beginning of the receiver slot 50b, the receiver node to open its radio equipment, and Tx listener listens for the child during the time slot 54b any transmission from a transmitter node (shown in Figure 2B), using the above-described ED functionality to perform RSSI measurements and store the measurement results and the measurement time and the RF channel. 在Tx侦听子时隙54b期间没有成功接收数据分组的接收机节点不将其无线电装置从接收切换到发射。 Receiver node listens during Tx sub-slots 54b not successfully received data packet is not to be received from the radio transmitter apparatus is switched. 相反,其关闭无线电装置,保留存储的RSSI信息供在检测RF干扰中使用,以及在Rx空子时隙60b期间等待下一个时隙的开始。 Instead, turn it off radio, RSSI information retention stored for use in detecting RF interference, as well as during the time slot 60b Rx loopholes waiting to start the next time slot. 同时,发射机节点如上面针对图2A描述那样操作。 Meanwhile, the transmitter node as described above operates as described for Figure 2A. 发射机时隙30a和接收机时隙50b实际上是分别从发射机节点和接收机节点观察的相同的网络时隙。 The transmitter and receiver slots 30a slot 50b is actually the same network time slots, respectively, from the transmitter node and a receiver node observed.

[0032] 在本发明的用于在网内寂静时间期间记录RSSI测量的情况下检测RF干扰的另一个实施例中,无线现场设备网格网络18中的调度为在分派的时隙期间在分派的RF信道上发送或接收传输的每个无线设备20a-20i. . . 20N和接入点22在网络完全寂静的时隙部分(或“子时隙”)期间测量所分派的信道上的RSSI。 [0032] In the case of the present invention is recorded in the network during the silence detection time measured RSSI RF interference another embodiment, the wireless field device 18 in the mesh network during the scheduled time slot assigned at dispatch The RF RSSI measurement channel during the assigned 22 slots in the network is completely silent portion (or "sub-slots") 20a-20i... 20N and the access point channel each wireless device to send or receive transmissions . 图3A和;3B示出了该实施例的分别针对发射机节点和接收机节点的时隙内的“寂静子时隙”的互补安排。 3A and; 3B shows the complementary arrangement respectively for the "silent sub-slots" slots transmitter node and a receiver node within the embodiment. 每个分派的时隙具有指定的发射机节点和指定的接收机节点。 Each assigned time slot having a transmitter and a receiver node at the specified node specified. 时隙由可变长度和类型的子时隙的安排组成,所述安排支配在该时隙内发射机和接收机采取的动作的定时。 Slot by a variable length and type of sub-slot arrangement composed the arrangement governed during the time slot timing of the transmitter and receiver to take action. 该安排在链接的节点之间是互补的,并且不断地重复。 The arrangement of links between nodes are complementary, and repeat. 如图3A所示,发射机时隙30c开始于Tx偏移子时隙32c,后面跟着Tx子时隙34c。 3A, the transmitter Tx slot 30c starts at offset sub-slots 32c, followed Tx sub-slot 34c. Tx子时隙3½后跟着I1x到Rx子时隙36c,继而在1Tx到Rx子时隙36c后跟着ACK/NACK侦听子时隙38c、Tx寂静子时隙40和1Tx空子时隙42c。 Tx sub-slots after 3½ follow I1x to Rx sub-slots 36c, and then in the sub-slot 36c 1Tx to Rx is followed by ACK / NACK listener sub-slot 38c, Tx silent sub-slots 40 and 1Tx empty slot 42c. 图示出了接收机时隙50c,其开始于Rx寂静子时隙52,其后跟着Tx侦听子时隙Mc。 It illustrates a receiver slot 50c, which began in silence Rx sub-slot 52 and thereafter follow Tx listener sub-slot Mc. Tx侦听子时隙Mc 后面跟着Rx到Tx子时隙56c、TxACK/NACK子时隙58c、以及Rx空子时隙60c。 Tx slot behind the listener follow the sub-Mc Rx to Tx sub-slots 56c, TxACK / NACK sub-slots 58c, and Rx empty slot 60c. 发射机时隙30c和接收机时隙50c实际上是分别从发射机节点和接收机节点观察的相同的网络时隙。 The transmitter and receiver slot slot 30c 50c are actually the same network time slot from the transmitter node and a receiver node observed.

[0033] 在接收机时隙50c的开始处,在Rx寂静子时隙52期间,接收机节点使用上面描述的ED功能来执行RSSI测量,并且存储测量结果以及测量时间和RF信道。 [0033] In the receiver at the beginning of the time slot 50c, the silence during the Rx sub-slots 52, the receiver node using the ED function described above to perform RSSI measurements, and stores the measurement result and the measurement time and the RF channels. 在该时间期间,发射机节点是寂静的,将任何传输延迟Tx偏移子时隙32c。 During this time, the transmitter node to be still, to offset any transmission delay Tx sub-slot 32c. Tx偏移子时隙32c的长度至少等于最大的网络时间同步误差加上用于接收机节点进行其RSSI测量的时间(即Rx寂静子时隙52)的和。 Tx offset sub-slot 32c of length at least equal to the largest network time synchronization error of plus time for the receiver node which RSSI measurements (ie Rx silence subslots 52) and. Tx偏移子时隙32c将传输延迟足够长的时间,以确保在Rx寂静子时隙52的RSSI测量的同时,发射机节点将不进行发射。 Tx offset 32c subslots transmission delay time long enough to ensure silence subslot Rx RSSI measured 52, while the transmitter node will not transmit. 重要地,因为对于网络中的所有无线设备,在所有分派的时隙中都存在相同的Tx偏移子时隙32c,所以网络在Rx寂静子时隙52的RSSI 测量期间在所有RF信道上是完全寂静的。 Importantly, because for all wireless devices in the network, in all time slots are assigned in the presence of the same sub-slot Tx offset 32c, so the network during the silence Rx RSSI measurement sub-slot 52 in all RF channels are complete silence. RSSI测量结果将指示背景RF噪声级别或者RF 干扰的存在。 RSSI measurement results will indicate the presence of background RF noise level or RF interference. 因为网络是完全寂静的,所以这不是接收机节点接收导致无线设备后续发射ACK或NACK响应的信号的时间。 Because the network is complete silence, so it is not the receiver node receives a subsequent transmission time leads to a wireless device in response to the ACK or NACK signal.

[0034] 在Rx寂静子时隙52之后,接收机节点在Tx侦听子时隙5½期间侦听来自发射机节点的任何传输。 [0034] After silence Rx sub-slot 52, the receiver node listens for the child during the Tx slot 5½ listen to any transmissions from the transmitter node. 同时,在Tx偏移子时隙32c之后,发射机节点在Tx子时隙3½期间进行发射。 Meanwhile, after the Tx offset subslot 32c, the transmitter node during 3½ Tx transmit subslot. Tx子时隙34c的长度足够长以容纳数据分组,包括伴随数据的所有的报头和尾部字节。 Tx sub-slot 34c of sufficient length to accommodate the data packets, including all the accompanying data header and trailer bytes. Tx侦听子时隙Mc的长度由Tx子时隙34c的长度加上至少两倍的网络时间同步误差来确定。 Tx listens sub-slot length Mc 34c by the Tx sub-slot length plus at least twice the network time synchronization error to determine. 这确保了,无论最大网络时间同步误差的方向如何,Tx子时隙3½将全部落在Tx侦听子时隙^c内。 This ensures that, regardless of the direction of maximum network time synchronization error, Tx sub-slots 3½ Tx listeners will all come within the sub-slots ^ c. 在Tx侦听子时隙5½期间,接收机还进行RSSI测量,其可以如上所述用于确定要用在设备之间的链路上的最佳的具体RF信道(以及,可选地,结合上述开放侦听实施例,用于另外的RF干扰检测测量)。 During Tx listener subslots 5½, the receiver also conducted RSSI measurements, which can be used to determine the device to be used on the link between the best specific RF channel (and, optionally as described above, in combination Open listener above embodiments, the RF interference detection for additional measurements). 在Tx子时隙3½之后,在Tx到Rx子时隙36c期间发射机节点将其无线电装置从发射切换到接收,接着在ACK/NACK侦听子时隙38c 期间开始侦听来自接收节点的确认数据分组的成功接收的确认信号。 After the Tx sub-slot 3½, the transmitter Tx to Rx node during sub-slots 36c to switch from the radio transmitter to the receiver, then the ACK / NACK listener during sub-slots 38c start acknowledgment from the receiving node listens acknowledgment signal successfully received data packet. 如果在Tx侦听子时隙5½期间接收节点成功接收数据分组,则在Rx到Tx子时隙56c期间接收节点将其无线电装置从接收切换到发射,接着在Tx ACK/NACK子时隙58c期间向发射机节点发送ACK响应。 If successfully received data packets Tx listens for the child during the time slot 5½ receiving node, then Rx to Tx sub-slots 56c during the receiving node to switch from the received radio transmitter, then during the Tx ACK / NACK sub-slot 58c ACK response is sent to the transmitter node. 备选地,如果在Tx侦听子时隙5½期间接收机节点由于预定的错误条件没有成功接收数据分组,则在Rx到Tx子时隙56c期间接收机节点将其无线电装置从接收切换到发射,接着在TxACK/NACK子时隙58c期间向发射机节点发送NACK响应。 Alternatively, the receiver listens for the child node if the receiver node in Tx time slot 5½ predetermined error condition is not due to the successful reception of the data packet, then Rx to Tx sub-slots 56c during its switch from the received radio transmitter then sends NACK to the transmitter node during TxACK / NACK sub-slot 58c. ACK/NACK侦听子时隙38c足够长以容纳Rx到iTx子时隙56c和TxACK/NACK子时隙的长度。 ACK / NACK sub-slots 38c listens long enough to accommodate the length of iTx Rx sub-slots 56c and TxACK / NACK sub-slots. 这确保了ACK/NACK子时隙58c将全部落在ACK/NACK侦听子时隙38c内。 This ensures that the ACK / NACK sub-slots 58c will all fall within the ACK / NACK listener sub-slot 38c.

[0035] 在ACK/NACK侦听子时隙38c之后,在Tx寂静子时隙40期间,发射机节点使用上面描述的ED功能来执行RSSI测量,并且存储测量结果以及测量时间和RF信道。 [0035] After the ACK / NACK listener sub-slot 38c, Tx silence during the 40 sub-slots, the transmitter node uses ED function described above to perform RSSI measurements and store the measurement results and the measurement time and the RF channel. ACK/NACK 侦听子时隙38c将Tx寂静子时隙40延迟足够长的时间以确保在Tx寂静子时隙40的RSSI 测量的同时,接收机节点将不发射ACK或NACK响应。 ACK / NACK sub-slots 38c listens to silence Tx sub-slot 40 a sufficient time delay to ensure the silence Tx sub-slot 40 while the RSSI measurements, the receiver node will not transmit an ACK or NACK response. 重要地,因为相同的发射机时隙30c和接收机时隙50c是在网络中的所有无线设备中出现的相同的网络时隙的部分,所以网络在Tx寂静子时隙40的RSSI测量期间在所有RF信道上是完全寂静的。 Importantly, because the portion 50c is the same for all wireless devices in the network time slot appearing the same transmitter and receiver slot 30c slots in the network, so the network during the silence RSSI measurement Tx sub-slot 40 in the All RF channels are completely silent. Tx寂静子时隙40的RSSI测量结果将指示背景RF噪声级别或者RF干扰的存在。 Tx silence sub-slot 40 RSSI measurement results will indicate the presence of background noise level RF or RF interference. 如Rx寂静子时隙52的RSSI 测量一样,因为在Tx寂静子时隙40的RSSI测量期间网络是完全寂静的,所以这不是发射机节点接收导致接收机节点发射ACK或NACK响应的信号的时间。 Rx silence as sub-slots 52 as RSSI measurements, because in silence Tx sub-slot 40 during network RSSI measurement is complete silence, so it's not cause the receiver to the transmitter node node receives an ACK or NACK signal transmission response time .

[0036] 备选地,Rx寂静子时隙可以被调度在Rx空子时隙60c内在ACK/NACK侦听子时隙38c结束之后。 [0036] Alternatively, Rx silent sub-slots can be scheduled after the Rx slot 60c loopholes inherent ACK / NACK sub-slots 38c end listener. 图3A和3C示出了分别针对发射机节点和接收机节点的时隙内的寂静子时隙的备选互补安排。 3A and 3C show respectively, for the silent child timeslots transmitter node and a receiver node within a complementary alternative arrangements. 除了用Rx寂静子时隙62替换Rx寂静子时隙52之外,所有情况与上面针对图3A和;3B的描述相同。 In addition to the replacement of silence Rx Rx sub-slot 52 with 62 sub-slots silent outside, and above all the situation in Figure 3A and against; 3B of the same description. Rx寂静子时隙62示出为恰好在ACK/NACK侦听子时隙38c 的结束处,与Tx寂静子时隙40重合,但是Rx寂静子时隙62可以是Rx空子时隙60c内的任何地方。 Rx silence sub-slot 62 is shown as just before the ACK / NACK listeners at the end of sub-slots 38c, and the Tx sub-slot 40 coincides with silence, but silence Rx sub-slot 62 can be any empty slot 60c within Rx place. 与Rx寂静子时隙52和Tx寂静子时隙40的RSSI测量一样,因为在Rx寂静子时隙62的RSSI测量期间网络是完全寂静的,所以这不是发射机节点接收导致接收机节点发射ACK或NACK响应的信号的时间。 And Rx and Tx silence silent sub-slots 52 sub-slots 40 as RSSI measurements, because in silence Rx RSSI measurement sub-slot 62 is completely silent during the network, so it's not cause the receiver to the transmitter node receives node transmits ACK or time signal NACK response. 该备选对于下述TMDA协议特别有用,该TMDA协议与WirelessHART®不同,其先开始发射,然后激活接收机以侦听传输。 This alternative is especially useful for the following TMDA agreement, the TMDA agreement with WirelessHART® different, which first began firing, and then activate the receiver to listen for transmissions. 这样的协议在具有非常少的传输的网络中是有用的。 Such an agreement is useful in a network with very little transmission of. 在这样的网络中,用于单个传输前导(其足够长以在接收机最终打开时还在发射)的额外功率大于来自许多接收机在关闭之前必须侦听的较短时间的能量节省的补偿。 Additional power in such a network, leading to a single transmission (which is long enough to open the receiver He was in the final emission) is more than compensated from a short time before shutting down many receivers must listen to the energy savings. 对于这种协议,Rx寂静子时隙52将不总是在网络完全寂静的时间期间,但是,Rx寂静子时隙62将仍然在网络完全寂静的时间期间。 With this agreement, Rx silent sub-slots 52 will not always be completely silent during network time, however, Rx silent sub-slots 62 will remain in the network is completely silent during the time.

[0037] 在前面的实施例中,在网内寂静时间期间进行的测量被临时存储在执行测量的无线设备中,并且直到确定了代表接收RF功率的测量结果的值和代表对应的测量时间的值时才被丢弃。 [0037] In the foregoing embodiment, the measurement is temporarily stored in the network for a period of silent time to perform measurements of wireless devices, and until it is determined represents the measured results of the received RF power values and the representatives of the corresponding measuring time if the value is discarded. 再次参考图1,代表接收RF功率的测量结果的值和代表对应的测量时间的值直到成功地在报告(RSSI报告)中发射给CSW1C6时才会被丢弃。 Referring again to FIG. 1, until successfully report (RSSI report) is transmitted to CSW1C6 will be dropped when the representative values representing the corresponding received RF power measurement time of the measurement results. 定期地,例如每隔15分钟, 无线现场设备网格网络18的每个无线设备20a-20i. . . 20N和接入点22根据该时间段临时存储的RSSI测量值和每个测量的时间来确定代表接收RF功率的测量结果的值和代表对应的测量时间的值。 Periodically, such as every 15 minutes, the wireless field device 18 of each wireless mesh network devices 20a-20i... 20N and the access point 22 based on RSSI measurements of the time period and the temporary storage time for each measurement value is determined representative of the received RF power measurement values representing the corresponding time measurement. 代表接收RF功率的测量结果的值是针对该时间段期间测量的每个RF信道来确定的。 Value representing the received RF power measurements for each RF channel measured during the time period determined. 在确定并临时存储针对每个RF信道的代表接收RF功率的测量结果的值和代表对应的测量时间的值之后,无线现场设备网格网络18的每个无线设备20a-20i. . . 20N在若干路径中的一条路径上逐节点地将由针对每个RF信道的代表接收RF功率的测量结果的值和代表对应的测量时间的值构成的RSSI报告发送通过无线现场设备网格网络18,直到它们到达接入点22。 After the value representing the corresponding measuring time is determined and temporarily stores the received RF power for representing each RF channel measurements, the wireless field device mesh network each wireless device 18 20a-20i... 20N in RSSI reporting values and corresponding measurement time representatives constituted by a plurality of nodes on the path to a path by the receiving RF power measurements for representing each RF channel transmission over a wireless mesh network field device 18, until they arrive at the access point 22. 在该实施例中,接入点22接着通过专用链路观将RSSI报告发送给网关16和运行在网关16上的CSWM 26。 In this embodiment, the access point 22 and then through a dedicated link Outlook report will be sent to the gateway RSSI 16 and run on the gateway CSWM 16 26. (备选地,如果CSWM 16改为运行在其他位置,例如运行在主计算机12上,则网关16将该报告转发给CSWM 26。)类似地,接入点22执行与每个无线设备20a-20i. . . 20N执行的相同类型的测量、确定和RSSI报告生成,并且定期通过专用链路观将RSSI报告发送给网关16和CSWM 26。 (Alternatively, if CSWM 16 instead run in other locations, such as running on a host computer 12, the gateway 16 forwards the report to the CSWM 26.) Similarly, the access point and each wireless device 22 performs 20a- measurements of the same type of 20i... 20N performed to identify and RSSI report generation, and regularly dedicated link View report will be sent to the gateway RSSI and CSWM 26 through 16. 因为接入点通常不是能量受限的设备,所以它们自由地收集更多的数据,以及比典型的无线设备更频繁地报告更多的数据。 Because the access point is generally not energy-constrained devices, so they are free to gather more data, and to report more data more frequently than typical wireless device. CSWM 26通过向每个无线设备20a-20i. . . 20N和接入点22发送确认报告的成功接收的返回消息,对成功接收来自每个无线设备20a-20i. . . 20N和接入点22的RSSI报告做出响应。 CSWM 26 through a return message to the successful reception of each wireless device 20a-20i... 20N and the access point 22 sends an acknowledgment of the report, for successfully received from each wireless device 20a-20i... 20N and the access point 22 The RSSI reports to respond. 备选地,每个无线设备20a-20i. . . 20N和接入点22的相邻节点通过发送确认报告或报告的一部分的成功接收的返回消息,对成功接收来自每个无线设备20a-20i. . . 20N和接入点22 的RSSI报告做出响应。 Alternatively, each wireless device adjacent nodes 20a-20i... 20N and the access point 22, the return message is part of successfully received by sending an acknowledgment report or reports on the successful reception from each wireless device 20a-20i ... 20N and 22 access points to respond RSSI report. 在任一情况下,在接收到确认成功接收的返回消息时,每个无线设备20a-20i. . . 20N和接入点22丢弃该时间段的针对每个RF信道的代表接收RF功率的测量结果的值和代表对应的测量时间的值。 In either case, upon receiving confirmation of a successful return message is received, each wireless device 20a-20i... 20N and the access point 22 discards the received RF power measurements for representing each RF channel of the time period The value and represents the corresponding measuring time. 同时,每个无线设备20a-20i. . . 20N和接入点22 已经开始进行新的RSSI测量,生成新的代表接收RF功率的测量结果的值并且构建针对新的时间段的新的RSSI报告。 At the same time, each wireless device 20a-20i... 20N and the access point 22 has begun a new RSSI measurements to generate a new value representing the received RF power measurement and RSSI build a new report for the new period .

[0038] 在基本相同的时间上发射每个无线设备20a_20i. . . 20N的RSSI报告将导致控制和过程监视系统10的所有或部分的控制和过程监视功能离线(offline),以适应无线现场设备网格网络18的传输容量上的这种负担。 [0038] emitting at substantially the same time on each wireless device 20a_20i... 20N of RSSI report will lead to the control and process monitoring systems control and process monitoring function off all or part of 10 of the (offline), to accommodate the wireless field devices That burden mesh network transmission capacity on 18. 相反,网络管理器M以交错的方式调度每个无线设备20a-20i...20N发射报告(以及间接地,接收确认消息)的定时,使得添加的传输负担很好地处于无线现场设备网格网络18的传输容量内。 Instead, the network manager M staggered manner scheduling each wireless device 20a-20i ... 20N transmit the report (and indirectly, to receive acknowledgment messages) timing, so that the added burden of a good transmission in the wireless field device Mesh the transmission capacity of the network 18.

[0039] 一旦CSWM沈接收来自无线设备20a_20i. . . 20N中的至少一些无线设备以及来自接入点22的RSSI报告,其针对每个RF信道确定接收RF功率的测量结果的基线统计值。 [0039] Once CSWM Shen receiving at least some of the wireless device from the wireless device 20a_20i... 20N and RSSI reports from the access point 22, which determines the baseline statistics received RF power measurement for each RF channel. 在没有激活的干扰源存在的情况下,基线统计值通常接近设备中使用的无线电装置的接收阈值界限(例如,针对大多数IEEE 802. 15. 4收发器是_90dBm)。 In the case where no active interference sources exist, usually close to the baseline statistics for use in radio receiving apparatus threshold limits (e.g., for most transceiver IEEE 802. 15. 4 is _90dBm). 其将报告的RF功率的测量结果与对应的基线统计值进行比较。 The measurement results of the report of the RF power and the corresponding statistical baseline value. 与对应的基线统计值相比超过给定量的报告的RF功率的测量结果指示RF干扰源,并且使得CSWM 26通过高速网络14向运行在主计算机12上的软件应用四发出警报。 Compared with the corresponding measurement baseline statistics report exceeds a given amount of RF power indicates RF interference source, and makes CSWM 26 through 14 high-speed network applications to run four alerts in software on the host computer 12. 该给定量可以是用户定义的接收RF功率阈值界限。 Which amount can be a user-defined threshold limit received RF power. 另外, CSWM 26将来自至少三个无线设备的指示RF干扰源的报告的RF功率的测量结果进行组合和相关,并且使用现有技术已知的标准三角计算来确定RF干扰源的位置。 RF power measurements in addition, CSWM 26 instructions from at least three wireless device RF interference sources can be combined and related reports and use the position known in the art of standard triangulation to determine RF interference source. 例如,无线设备20a-20i. . . 20N仅报告统计值和对应的测量时间,其包括针对每个RF信道的最大接收RF功率值和最大接收RF功率值的时间。 For example, a wireless device 20a-20i... 20N only report statistics and the corresponding measurement time, which includes time for the maximum received RF power value of each RF channel and the maximum value of the received RF power. 无线设备20h和20i报告超过先前预定的RF功率阈值的接收RF功率的测量最大值。 Measuring the maximum value of the wireless device 20h and 20i previously reported over a predetermined threshold value received RF power of the RF power. 无线设备20g是下一个最接近的,尽管其报告的接收RF功率测量值不超过先前预定的RF功率阈值,但是其仍具有与基线值相比稍微抬高的报告的RF 功率最大值。 20g wireless devices is the next closest, although reports received RF power measurements does not exceed the previously predetermined RF power threshold, but it still has a slightly elevated compared to baseline reports RF power maximum. CSWM 26比较20h、20i和20g的接收RF功率最大值,并且使用已知的标准三角算法来确定RF干扰源Rl的位置。 CSWM 26 Comparison 20h, 20i and the maximum power of the received RF 20g, and using a known standard triangulation algorithm to determine the position Rl RF interference source. 与警报一起,通过高速网络14将RF干扰源Rl的位置发送给运行在主计算机12上的软件应用四。 Together, 14 will send alerts via high-speed network RF interference source Rl position to run on the host computer 12 software applications IV. 备选地,该警报和RF干扰源Rl的位置显示在网关16上,供系统操作员使用。 Alternatively, the alarm and RF interference source Rl's location at the gateway 16, for the system operator to use. 在该例子中,通过仅发射统计信息而不是每个测量结果,以及仅定期进行报告(例如,每隔15分钟),该实施例最小化了为了在定期的、进行中的、基本连续的基础上提供对整个网络中的RF干扰的检测和定位所需的对任何单个节点的能量影响。 In this example, only by transmitting the statistical information instead of each measurement result, and report only the regular (e.g., every 15 minutes), the embodiment in order to minimize a regular, ongoing, substantially continuous basis provide energy on impact on the entire network of RF interference detection and localization required for any single node.

[0040] 本发明的用于在网内寂静时间期间记录RSSI测量的情况下检测RF干扰的另一个实施例是在“开放信道时隙”期间。 Another case for the detection of RF interference within the network is recorded in the silent period of time measured RSSI [0040] The embodiments of the present invention is in the "open channel slots." 开放信道时隙是一个RF信道在一个时隙中没有被网络管理器分配。 Open channel slot is an RF channel is not assigned a network manager in one slot. 在该开放信道时隙期间,网络管理器没有调度无线现场设备网格网络中的任何设备在该RF信道上进行发射。 In the open channel time slot during which the network manager does not dispatch the wireless field devices in a mesh network to any device in the RF channel for transmission. 其他链路可能在该相同时隙期间在其他RF信道上通信, 但是没有任何链路会操作在该开放信道上。 Other possible links during the same time slot in the other RF communication channel, but there is no link will operate in the open channel. 在开放信道时隙期间,在该时隙期间没有分配给链路的一个或多个无线设备由网络管理器命令以在一个或多个开放信道上进行RSSI测量。 During the open channel time slot during the time slot is not assigned to a link or more wireless devices by the network manager in order to carry out one or more open channels RSSI measurements. 在所有的RF信道在具体的开放时隙中都是开放的情况下,网络管理器可以命令一个或多个设备在所有RF信道上进行RSSI测量。 In all RF channels are open at specific open slot, the network manager can order one or more devices in all RF RSSI measurement channels. 因为无线现场设备网格网络中没有任何设备在该时隙期间在开放信道上进行发射,所以这是那些开放信道上的针对网内业务的寂静时间。 Because the wireless field device mesh network without any device during the time slot for transmission in an open channel, so this is an open channel for those services within the network silence time.

[0041] 参考图1,网络管理器对协调在开放信道时隙期间的无线现场设备网格网络18中的RSSI测量。 [0041] Referring to Figure 1, the network manager to coordinate during the open channel slot of wireless field devices in the mesh network 18 RSSI measurements. 网络管理器M向无线现场设备网格网络18的每个无线设备20a-20i. . . 20N 和接入点22发送指令,以在没有分配用于网络通信的一个或多个时隙期间在若干分配的RF信道中的至少一个信道上进行一系列RSSI测量,以及在执行测量的设备中存储RSSI测量值和测量时间。 The network manager M to the wireless field devices 18 mesh network of each wireless device 20a-20i... 20N and the access point 22 sends commands to the network during a communication is not allocated for one or more time slots in several at least one channel a series of RSSI measurements allocated RF channels, and storing the measured values and the RSSI measuring execution time of the measurement device. 一旦收集了RSSI测量数据和测量时间,每个无线设备20a-20i. . . 20N和接入点22根据该时间段的临时存储的RSSI测量值和每个测量的时间来确定代表接收RF 功率的测量结果的值和代表对应的测量时间的值。 Once collected RSSI measurement data and measurement time, each wireless device 20a-20i... 20N and the access point 22 temporarily stores the value based on the RSSI measured time period and the time of each measurement is determined representative of the received RF power value measurement value representing the corresponding time measurement. 代表RF功率的测量结果的值是针对该时间段期间测量的每个RF信道来确定的。 It represents the RF power measurements for each RF channel measured during the time period determined. 在确定并临时存储针对每个RF信道的代表RF功率的测量结果的值和代表对应的测量时间的值之后,无线现场设备网格网络18的每个无线设备20a-20i. . . 20N在若干路径中的一条路径上逐节点地将由针对每个RF信道的代表RF功率的测量结果的值和代表对应的测量时间的值构成的RSSI报告发送通过无线现场设备网格网络18,直到它们到达接入点22。 After determining the values and the corresponding measured values representing the time of temporary storage for the representative of the RF power measurements for each of the RF channels, each mesh network of wireless field devices 18, wireless devices 20a-20i... 20N in several on a path-by-path node to RSSI report will consist of representatives of values and corresponding measurement time for the representatives of RF power measurement results for each RF channel is sent over the wireless field devices 18 mesh network until they reach access In point 22. 接入点22接着通过专用链路观将来自每个无线设备20a-20i. . . 20N的RSSI报告以及其自己的RSSI报告发送给网关16和CSWM 26。 The access point 22 and then through a dedicated link View will be sent to the gateway 16 and CSWM 26 from each wireless device 20a-20i... 20N of RSSI RSSI reports and its own report. CSWM 沈通过向每个无线设备20a-20i. . . 20N和接入点22发送确认报告的成功接收的返回消息, 对成功接收来自每个无线设备20a-20i. . . 20N和接入点22的RSSI报告做出响应。 CSWM Shen successfully received by each wireless device to 20a-20i... 20N and the access point 22 sends a return message confirmation report of successful reception from each wireless device 20a-20i... 20N and the access point 22 The RSSI reports to respond. 备选地, 每个无线设备20a-20i. . . 20N和接入点22的相邻节点通过发送确认报告的成功接收的返回消息,对成功接收来自无线设备20a-20i. . . 20N和接入点22的RSSI报告做出响应。 Alternatively, each wireless device adjacent nodes 20a-20i... 20N and the access point 22 returns successfully received by sending a message confirmation report of successful reception from the wireless device 20a-20i... 20N and access In point 22 of the RSSI report to respond. 在任一情况下,在接收到确认成功接收的消息时,每个无线设备20a-20i. . . 20N和接入点22丢弃针对所请求的一系列RSSI测量的针对每个RF信道的代表接收RF功率的测量结果的值和代表对应的测量时间的值。 In either case, upon receiving a confirmation message successfully received, each wireless device 20a-20i... 20N and 22 discards the received RF access point for the representatives of the requested number of RSSI measurements for each RF channel measurement results and the value of power on behalf of the corresponding measuring time. 网络管理器M以交错的方式调度RSSI报告和接收确认消息的传输的定时,使得添加的传输负担很好地处于无线现场设备网格网络18的传输容量内。 Timing network manager M staggered manner RSSI reporting and scheduling transmissions received confirmation message, so the added burden of transmission is well within the wireless field devices 18 mesh network transmission capacity.

[0042] 在需要RF干扰信息时,本发明的实施例能够形成在整个无线现场设备网格网络上的ISM频谱上的RF干扰的图,同时限制网络的正常操作的中断。 [0042] RF interference information when required, embodiments of the present invention can be formed on the entire FIG mesh network of wireless field devices ISM RF interference on the spectrum, while limiting the disruption of the normal operation of the network. 这在为了节省能量或者因为不需要更频繁的通信而使得很少的时隙被分配用于通信的时间和位置处特别有用。 This is in order to save energy or because there is no more frequent communication and make a few slots are allocated to be particularly useful at a time and location to communicate. 因为无线现场设备网格网络18中的本地供电的无线设备可用的能量通常是有限的,所以本实施例是在按需基础上使用的,而不是在前面的实施例的连续基础上使用。 Because the wireless field device 18 in the wireless mesh network equipment locally available energy supply is usually limited, so this example is based on the use of on-demand, instead of using a continuous basis in the previous embodiments.

[0043] 这些不同的实施例特别良好地适合于检测和定位瞬时RF干扰,因为来自无线设备的RSSI报告包括代表对应的RF测量时间的值,所述值由网络管理器24在控制和过程监视系统10中协调到约1毫秒内的精确度(例如在WirelessHART®)。 [0043] These different embodiments are particularly well suited for detecting and locating the instantaneous RF interference, because RSSI reports from wireless devices include RF represents the corresponding measuring time, the value of the network manager 24 in the control and process monitoring coordinate system 10 to the accuracy of approximately 1 millisecond (eg, in WirelessHART®). CSWM 26通过比较每个无线设备的对应的RF测量时间来组合来自至少三个无线设备的指示在相同时间帧内的RF干扰源的RSSI报告,并且利用现有技术已知的标准三角算法来确定RF干扰源的位置。 CSWM 26 by comparing the corresponding measurement time for each RF wireless device to an instruction from the combination of at least three wireless devices within the same time frame RF interference source RSSI reports and to determine the use of the prior art known standard triangulation algorithm Location RF interference source. CSWM沈通过例如在趋势线上绘制RSSI数据,生成RF信道的频谱图、在图上突出干扰源位置、或者通过示出位置随时间在图上的移动,比较一系列位置以识别瞬时或移动的RF 干扰源。 CSWM Shen trend line drawn through, for example RSSI data, generate spectrum RF channel interference source in prominent location on the map, or by showing the position with time moving on the graph to compare a series of locations to identify transient or moving RF interference source.

[0044] 图4是示出本发明的用于测量和分析具有多个接入点的无线现场设备网格网络附近和内部的RF干扰的另一个实施例的示图,无论接入点服务的网格网络的区域是否部分重叠。 [0044] FIG. 4 shows a diagram of the present invention for measuring and analyzing the wireless field device near the mesh network and internal RF interference has multiple access points to another embodiment, both the access point Service Whether the mesh network overlap region. 因为接入点具有将通信往无线现场设备网格网络内或外中继的有限能力,所以较大的控制和过程监视系统需要多个接入点来处理网络中的增长数目的节点,或者以其他方式来统一各自具有自己的接入点的分离的无线现场设备网格网络。 Because the access point has to communicate to wireless field device outside the limited capacity of the grid network or relay, so greater control and process monitoring systems require multiple access points to handle the growth in the number of network nodes, or to Other ways to unify wireless field devices, each having its own mesh network access point separation. 根据一个实施例,图4 示出了控制和过程监视系统10,其包括主计算机112、第一高速网络114、网关116、第二高速网络118、以及无线现场设备网格网络119。 According to one embodiment, Figure 4 shows a control and process monitoring system 10 includes a host computer 112, the first high speed network 114, gateway 116, a second high speed network 118, and 119 mesh network wireless field devices. 无线现场设备网格网络119包括无线现场设备网格网络区域120、122和124。 Wireless field device 119 includes a mesh network of wireless field devices 120, 122 and 124 area mesh networks. 无线现场设备网格网络区域120包括无线设备或节点130a-130i. . . 130N以及接入点132。 Wireless field device region 120 includes a wireless mesh network devices or nodes 130a-130i... 130N and the access point 132. 无线现场设备网格网络区域122包括无线设备或节点140a-140i. . . 140N以及接入点142。 Wireless field device region 122 includes a wireless mesh network devices or nodes 140a-140i... 140N and the access point 142. 无线现场设备网格网络区域122示出为与无线现场设备网格网络区域120部分重合,但是也可以是完全重合,或者与120完全分离。 Wireless mesh network field device 122 is shown as region 120 coincides with the part of the wireless field device area mesh network, but can also be completely overlap, or completely separated from the 120. 无线现场设备网格网络区域1¾包括无线设备或节点150a-150i. . . 150N以及接入点152。 Wireless field devices, including wireless mesh network area 1¾ devices or nodes 150a-150i... 150N and the access point 152. 主计算机112包括网络管理器160和CSWM 162,尽管备选地网络管理器160和CSWM 162中的任意一个或两者可以驻留在网关116上。 The host computer 112 includes a network manager 160 and CSWM 162, although alternatively, the network manager 160 and CSWM 162 in either or both may reside on the gateway 116. 主计算机112还包括软件应用164。 The host computer 112 also includes a software application 164. 软件应用164例如是控制软件或者监视软件。 Software application 164, for example, control software or monitoring software. 在图4中还存在干扰源R2和R3。 There are sources of interference R2 and R3 in Figure 4.

[0045] 消息通过第一高速网络114从主计算机112传送到网关116。 [0045] message through the first high speed network 114 from the host computer 112 to the gateway 116. 目的地为无线现场设备网格网络区域120、122和IM之一中的节点的消息通过第二高速网络118从网关16分别发送给接入点132、142和152之一。 The destination is one of 120, 122 and IM wireless field devices area mesh network nodes by one second high-speed network messages from the gateway 16 sends 118 to the access point 132, 142 and 152 respectively. 接入点132、142和152之一接着将消息直接或以逐跳的方式通过若干不同路径中的一条路径将消息分别发射给无线现场设备网格网络区域120、122 和124 的无线设备130a_130i. · · 130N、140a_140i. · · 140N 以及150a_150i. · · 150N 中的一个设备。 132, 142 and 152 of the access point is then directly or hop way through several different paths in a path message respectively transmit a message to the wireless field device area wireless mesh network equipment 130a_130i 120,122 and 124. · · 130N, 140a_140i. · · 140N and. · The 150N 150a_150i a device. 返回消息按照相反路径回到主计算机112。 Return messages in reverse path back to the host computer 112. 由运行在主计算机112上的网络管理器160分派为了协调整个无线现场设备网格网络119上的通信所需的节点之间的时隙、链路分配、以及RF信道分配。 By the run on the host computer's network management 112 160 dispatcher to coordinate the wireless field device mesh network time slot assignment link required to communicate between nodes 119, and RF channel assignments.

[0046] 本发明的该实现的实施例使用了在网内寂静时间期间(在如上文参考图1、2A_2D 以及3A-;3B描述的开放侦听、开发信道时隙以及寂静子时隙中的至少一个期间)进行的RSSI测量。 Example of the Implementation of the [0046] present invention uses a silent period of time within the network (as described above in reference to FIG 1,2A_2D and 3A-; open listener 3B described, as well as the development of a channel time slot in the silent subslot at least one period) RSSI measurements made.

[0047] RSSI测量值和每个测量的时间以及RF信道被临时存储在执行测量的设备中,并且直到确定了代表接收RF功率的测量结果的值和代表对应的测量时间的值时才被丢弃。 [0047] RSSI measurements and each measurement time and the RF channel is executed in the measuring apparatus, and until it is determined the value representing the measurement results of the received RF power values representing the corresponding measuring time only to be discarded temporarily stored . 再次参考图4,代表RF功率的测量结果的值和代表对应的测量时间的值直到成功地在报告(RSSI报告)中发射给CSWM 162或备选地发射给相邻节点时才会被丢弃。 4, the value representing the corresponding measuring time on behalf of RF power measurements Referring again to FIG until successfully report (RSSI report) is transmitted to CSWM 162 or alternatively to launch a neighboring node will be discarded. 定期地,例如每隔15分钟,无线现场设备网格网络119的每个无线设备和接入点确定该时间段的代表接收RF功率的测量结果的值和代表对应的测量时间的值。 Periodically, such as every 15 minutes, each wireless device and the access point wireless mesh network 119 field devices to determine the representative values representing the corresponding received RF power measurement time of the measurement results of the time period. 代表接收RF功率的测量结果的值是针对在该时间段期间测量的每个RF信道来确定的。 Value representing the received RF power measurements for each RF channel during the time period measured to determine. 在确定针对每个RF信道的代表接收RF功率的测量结果的值和代表对应的测量时间的值之后,无线现场设备网格网络区域120、122和124的每个无线设备在若干路径中的一条路径上逐节点地将由针对每个RF信道的代表接收RF功率的测量结果的值和代表对应的测量时间的值构成的RSSI报告发送通过无线现场设备网格网络区域120、122和124,直到它们到达接入点132、142或152中的任何一个。 After determining the value representing the corresponding received RF power measurement time for representatives of each RF channel measurements, the wireless field device mesh network area of each wireless device 120, 122 and 124 in a number of path RSSI reporting values and corresponding measurement time representatives constituted by a node on the path to be received by the RF power measurements for representing each RF channel is sent via wireless field devices 120, 122 and 124 area mesh network until they arrive at the access point 152 in the 132, 142 or any of them. 接入点132、142或152接着通过第二高速网络118将来自无线现场设备网格网络区域120、122和124中的每个无线设备的RSSI报告以及它们自己的RSSI报告发送给网关116。 120, 122 and 124 in each of the RSSI reporting access points 132, 142 or 152 followed by a second high-speed network from the wireless field devices 118 area mesh network of wireless devices and their own RSSI report is sent to the gateway 116. 网关116通过第一高速网络114将该报告转发给主计算机112上的CSWM 162。 Gateway 116 through 114 of the first high-speed network to forward the report to the host computer CSWM 162 112. CSWM 162通过发送确认每个RSSI报告的成功接收的返回消息,对成功接收来自无线现场设备网格网络区域120、122和124中的每个无线设备和接入点132、142和152的RSSI报告做出响应。 CSWM 162 return message by sending an acknowledgment for each RSSI successfully received reports of successfully received 120, 122 and 124 each wireless device and the access point RSSI reports from the wireless field devices 132, 142 and 152 area mesh network of responds. 备选地,无线现场设备网格网络区域120、122和124的每个无线设备和接入点132、 142和152的相邻节点通过发送确认报告的成功接收的返回消息,对成功接收RSSI报告做出响应。 Alternatively, the wireless field devices 120, 122 and each area mesh network of wireless devices and access points 124, 132, 142 and 152 adjacent nodes through successfully received a return message is sent to confirm the report, the report on the successful reception of RSSI responds. 在任一情况下,在接收到确认成功接收的消息时,无线现场设备网格网络区域120、 122和IM中的每个无线设备和接入点132、142和152丢弃该时间段的针对每个RF信道的所存储的代表接收RF功率的测量结果的值和代表对应的测量时间的值。 In either case, upon receipt of the acknowledgment message received successfully, the wireless field device mesh network region 120, 122 and IM each wireless devices and access points 132, 142 and 152 of the discards for each time period value represents the stored RF channel receiver RF power measurement value representing the corresponding time measurement. 网络管理器160 以交错的方式调度RSSI报告和接收确认消息的传输的定时,使得添加的传输负担很好地处于无线现场设备网格网络119的传输容量内。 Network manager 160 in a staggered manner RSSI reporting and scheduling transmission timing of receiving acknowledgment messages, so the added burden of transmission is well within the wireless field device 119 mesh network transmission capacity.

[0048] 一旦CSWM 162接收来自无线现场设备网格网络区域120、122和124中的每个无线设备和接入点132、142和152的RSSI报告,其针对每个RF信道确定RSSI测量的基线统计值。 [0048] Once CSWM 162 received 120, 122 and 124 in each of the wireless device and the access point RSSI reports from the wireless field devices 132, 142 and 152 area mesh network, which determine a baseline for each RF RSSI measurement channel statistics. 在没有激活的干扰源存在的情况下,基线统计值通常接近设备中使用的无线电装置的接收阈值界限(例如,针对大多数IEEE 802. 15. 4收发器是_90dBm)。 In the case where no active interference sources exist, usually close to the baseline statistics for use in radio receiving apparatus threshold limits (e.g., for most transceiver IEEE 802. 15. 4 is _90dBm). 其将报告的RF功率的测量结果与对应的基线统计值进行比较。 The measurement results of the report of the RF power and the corresponding statistical baseline value. 与对应的基线统计值相比超过给定量的报告的RF功率的测量结果指示RF干扰源,并且使得CSWM 162向运行在主计算机112上的软件应用164发出警报。 Compared with the corresponding measurement baseline statistics report exceeds a given amount of RF power indicates RF interference source, and makes CSWM 162 alerts to run software applications on the host computer 164 112. 对于检测和分析无线现场设备网格网络的单个区域附近或内部的干扰源,诸如RF干扰源R2,本实施例的操作与上文参考图1描述的第一实施例非常类似。 For a single source of interference region near or inside the detection and analysis of the mesh network wireless field devices, such as RF interference source R2, operation of the first embodiment described above with reference to FIG. 1 of the present embodiment as described is very similar. 例如,无线设备140b、140f和140g通过接入点142(或接入点132,通过无线现场设备网格网络区域122和IM之间的重合)以及第二高速网络118向网关116报告统计值和对应的测量时间,其包括针对每个RF信道的超过先前定义的接收RF功率阈值的最大接收RF功率值和最大RF功率值的时间(作为RSSI报告的一部分)。 For example, wireless device 140b, 140f and 140g (132, or access point via a wireless field device mesh network overlap region between 122 and IM) report through an access point 142 and a second high speed network 118 and the gateway 116 statistics corresponding to the measurement time, comprising the maximum received RF power value and the maximum value of the RF power of the RF power received time for the threshold for each RF channel exceeds a previously defined (as part of the report RSSI). 网关116通过第一高速网络114将该报告发送给CSWM 162。 Gateway 116 through 114 of the first high-speed network to send the report to CSWM 162. CS丽162比较140b、140f和140g的接收RF功率最大值和对应的测量时间,并且使用已知的标准三角算法来确定RF干扰源R2的位置。 CS Lai 162 relatively 140b, 140f and 140g of receiving RF power and the corresponding maximum measurement time, and use known standard triangulation algorithm to determine RF interference source R2 position. 优选地,与警报一起,将RF干扰源R2的位置发送给运行在主计算机112上的软件应用164。 Preferably, together with the alert will be sent RF interference source R2 position to run the software on the host computer application 112 164. 备选地,该警报和RF干扰源R2的位置通过第一高速网络114进行发射并且显示在网关116上,供系统操作员使用。 Alternatively, the alarm and location of RF interference source R2 through the first high-speed network to transmit 114 and 116 are displayed on the gateway for the system operator to use.

[0049] 与参考图1描述的实施例不同的是,本实施例还使用来自整个无线现场设备网格网络119上的无线设备或多个接入点的信息,检测和定位在单个无线现场设备网格网络区域120、122和IM之外的RF干扰源,例如RF干扰源R3。 [0049] with reference to FIG. 1 described in Example is different, detection and location in a single wireless field device of the present embodiment also uses information from the wireless device across the wireless field devices on the mesh network 119 or more access points, The mesh network 120, 122 and IM region outside RF interference source, such as RF interference source R3. 因为网络管理器160以1毫秒内的精确度协调无线现场设备网格网络119中(诸如在WirelessHART®中)的所有无线设备和接入点的时隙和RF信道分配,所以来自无线现场设备网格网络119的不同部分的无线设备或接入点的RF干扰信息可以精确地进行组合以提供RF干扰源R3的精确位置。 Since Network Manager 160 with an accuracy of 1 ms coordinated wireless mesh network 119 field devices (such as WirelessHART® in) slots and RF channel assignments for all wireless devices and access points, so from the wireless field device networks RF interference information different parts of the grid network of the wireless device 119 or access point can accurately be combined to provide an accurate position R3 of RF interference source. 在RF 干扰源R3的例子中,检测到的来自该源的RF能量最大的三个无线设备是无线现场设备网格网络区域120的无线现场设备130h、无线现场设备网格网络区域122的接入点142和无线现场设备网格网络区域124的接入点152。 In the example of R3 RF interference source, the detected RF energy from the source device is a maximum of three wireless mesh network of wireless field devices 130h 120 area of the wireless field device, the field device access wireless mesh network region 122 point 142 and the wireless field devices area mesh network access points 124 152. 无线设备130h(经由接入点132)、接入点142 和接入点152通过第二高速网络118向网关116报告针对每个RF信道的超过先前确定的接收RF功率阈值的最大RF功率值和最大RF功率值的时间(作为RSSI报告的一部分)。 The wireless device 130h (via an access point 132), an access point 142 and the access point 152 through the second high-speed network to more than 118 gateway 116 reports received RF power threshold value previously determined for each RF channel maximum RF power value and Time maximum RF power value (as part of the report RSSI). 网关116通过第一高速网络114将该报告发送给CSWM 162。 Gateway 116 through 114 of the first high-speed network to send the report to CSWM 162. CSWM 162比较来自无线设备130h、接入点142和接入点152的针对每个RF信道的最大RF功率值和最大RF功率值的对应时间,并且使用已知的标准三角算法来确定RF干扰源R3的位置。 CSWM 162 corresponding to the time from the wireless device comparing 130h, the access point 142 and the access point for each RF channel maximum RF power value and the maximum value of the RF power 152, and using a known standard triangulation algorithm to determine RF interference source position R3. 与警报一起,将RF干扰源R3的位置发送给运行在主计算机112上的软件应用164。 Together, it will be sent with the alarm location RF interference source R3 to run on the host computer 112 software applications 164. 备选地,该警报和RF干扰源R3的位置通过第一高速网络114进行发送并且显示在网关116上,供系统操作员使用。 Location Alternatively, the alarm and RF interference source R3 through the first high-speed network to transmit 114 and 116 are displayed on the gateway for the system operator to use.

[0050] 在该实施例中,因为网络管理器在整个控制和过程监视系统内以1毫秒内的精确度协调无线现场设备网格网络中的时隙和RF信道分配,所以来自无线现场设备网格网络的不同的单个无线现场设备网格网络区域的无线设备或接入点的RF干扰信息可以精确地进行组合以在连续的基础上在较大的区域上提供RF干扰源的精确位置。 [0050] In this embodiment, the network manager in the entire process control and monitoring systems within an accuracy of 1 ms coordination slots and RF channel assignments wireless field devices in a mesh network, so the network from the wireless field devices RF interference information field device different single wireless mesh network frame area network or access point the wireless device can be accurately combined on a continuous basis to provide accurate location of RF interference source over a larger area.

[0051] 在本发明的所有实施例中,对于定位两维上的干扰源而言,使用来自三个无线设备(或接入点)的信息的标准三角计算是理想的,因为它们识别了单个位置。 [0051] In all embodiments of the present invention, the source of interference on the two-dimensional positioning, the use of wireless devices from three (or access point) in the calculation of the standard triangle information is desirable, because they recognize a single Location. 组合来自多于三个设备的信息提高了本发明的位置精确度。 A combination of information from more than three devices to improve the accuracy of location of the present invention. 然而,如果仅两个无线设备检测到干扰源, 则来自两个无线设备的信息如果与非RF特性信息进行组合,则也差不多是有用的。 However, if only two wireless device detects the interference source, the information from both the wireless device and if the information is a combination of a non-RF characteristics, it is almost useful. 例如, 根据来自两个无线设备的指示RF干扰源的RSSI测量发现的两个可能的RF干扰源位置之一如果是在可能的RF干扰源难以到达的受保护区域,则可以根据规则剔除。 For example, one possible source of RF interference RF interference source location according to the instructions of RSSI measurements from the two wireless devices found in two if it is in a protected area of possible RF interference sources are difficult to reach, according to the rules can be removed.

[0052] 如上面提到的,CSWM能够通过下述方式在主计算机或者网关上显示RF干扰信息: 例如在趋势线上绘制RSSI数据,生成包括频谱密度和RF历史的频谱图、在图上突出干扰源位置、示出干扰源的占空因素、示出按照信道或按照的RSSI、按照信道将逐个链路的干扰RSSI与网内RSSI进行比较、使用柱状图示出作为干扰RSSI的函数的路径稳定度、或者通过示出位置随时间在图上的移动。 [0052] As mentioned above, CSWM can display RF interference by the following message on the host computer or gateway: RSSI data such as drawing a trend line, including spectral density and generate RF spectrum of history, highlight the diagram source of interference position, shown interferer duty factor shown in accordance with a channel or in accordance with the RSSI, according to channel-by-link interference RSSI RSSI is compared with the network, using the histogram shown as a function of the path RSSI interference stability, or by showing the position with time moving on the graph. CSWM能够显示组合,以及示出覆盖有干扰源和干扰RSSI的网络拓扑(例如,节点、链路、路线)。 CSWM combination can be displayed, and the source of interference is shown covered and interference RSSI network topology (e.g., nodes, links, routes). 另外,CSWM能够组合代表接收RF功率的测量结果的值和代表对应的测量时间的值,以生成多点梯度图,其与热红外分布图类似。 In addition, CSWM can combine values representing the corresponding measuring time represents the measured results of the reception of RF power to generate a multi-point gradient map, which is similar to the thermal infrared maps. 多点梯度图可以针对执行测量的无线设备的已知位置,以各种颜色或阴影来显示代表在对应的测量时间处或对应的测量时间范围上的针对分配的RF信道的接收RF功率的测量结果的级别的值。 Multipoint gradient map can perform the measurement for a known location of a wireless device, a variety of colors or shading to show the power of the received RF for distribution on behalf of the corresponding measuring time or at a time corresponding to the measurement range of the measurement of RF channels The results of the level of value. 多点梯度图覆盖无线现场设备网格网络的全部或者一部分,提供了对RF背景和RF干扰级别的易于理解的视觉指示。 Multi-point gradient map covering all or part of the wireless field device mesh network that provides the background for RF and RF interference level easily understood visual indication.

[0053] 对于本发明的所有实施例,RSSI报告是可配置的,从间歇报告(例如,参考开放侦听和寂静子时隙实施例描述的15分钟报告周期)到主动报告(诸如上面针对开放信道时隙实施例描述的那样,其中进行所请求的一系列RSSI测量并且以很小的延迟返回值)。 [0053] For all embodiments of the present invention, RSSI reporting is configurable, from the intermittent reports (for example, 15 minutes reporting period of the reference open listening and silence sub-slot embodiments described herein) to take the initiative to report (such as described above for open channel time slot to the embodiments described above, wherein a series of RSSI measurements requested and returned with little delay value). 应该理解,RSSI测量可以单独地或者以任何组合来使用上面描述的三个网内寂静时间,并且在所有例子中,可以针对使用的每个网内寂静时间单独配置(从间歇到主动)RSSI报告的频次和响应率。 It should be understood, RSSI measurements may be used alone or in any combination to use within three networks described above silent time, and in all cases, can be individually configured (from intermittent to active) RSSI reports on the use of silence within each network time The frequency and response rates. 此外,还应该理解,RSSI报告请求还可以通过规定RF功率测量的预定范围以及丢弃在该预定范围外的所有RSSI读数来过滤用于创建RSSI报告的RSSI读数。 In addition, it should be understood that, RSSI report request can also be filtered RSSI RSSI readings used to create reports by specifying a predetermined range RF power measurement and discarded outside the predetermined range of all RSSI readings. 所有的RSSI报告请求源自CSWM,并且由网络管理器进行协调和实现。 All RSSI report requests from CSWM, and coordination and implementation carried out by the Network Manager.

[0054] 在所有的实施例中,具有本地操作员接口(LOI)的无线设备或者接入点能够显示由无线设备或接入点进行的任何实际的RSSI测量以及由无线设备或接入点根据RSSI测量如上所述确定的代表接收RF测量的值。 Wireless device or access point [0054] In all embodiments having Local Operator Interface (LOI) can show any actual RSSI measured by the wireless device or access point, as well as by a wireless device or access point according to RSSI measurements determined as described above is representative of the received RF measurement value. 根据上面描述的实施例,显示的信息仅是保留在本地存储器中的信息。 According to the above described embodiments, the information display is only information in the local memory retention. [0055] 在所有实施例中,如果为了更好地识别RF干扰源的位置需要另外的RSSI测量, 则可以使用手持无线设备,包括具有接收RF功率测量能力的无线电装置,诸如符合IEEE 802. 15. 4标准的无线电装置。 [0055] In all embodiments, if in order to better identify the location of the required additional RF interference source RSSI measurement, you can use a handheld wireless device comprising a radio apparatus having a receiving RF power measurement capability, such as compliance with IEEE 802. 15 4 standard radio apparatus. 手持无线设备与网络管理器协调以通过本地无线现场设备网格网络与网络管理器通信,以便识别与导致无线设备发射ACK或NACK响应的信号的接收期间不同的时间,诸如开放侦听、寂静子时隙、或者开放信道时隙。 A handheld wireless device and a network manager to coordinate field device via local wireless mesh network to communicate with the network manager to identify and lead to different wireless devices transmit during receiving ACK or NACK response signal time, such as open listener, silent sub- slot, or open channel slot. 手持无线设备在本地无线现场设备网格网络中的手持无线设备的用户选择的RF信道上进行RSSI测量。 Handheld wireless devices in a local wireless field devices in the mesh network handheld wireless device user selection of RF channel RSSI measurements performed. 在手持无线设备上显示实际的RSSI测量和统计值。 Show the actual RSSI measurements and statistics on handheld wireless devices.

[0056] 除了检测和定位RF干扰源,本发明还利用其逐个信道的RF频谱分析,通过确定每个RF信道的RF干扰强度和创建每个RF干扰的RF频谱特征图,来识别检测到的RF干扰源。 [0056] In addition to detecting and locating RF interference sources, the present invention also make use of its by-channel RF spectrum analysis, by determining each RF channel RF interference strength and create RF interference of RF spectrum for each feature maps to identify the detected RF interference source. 通过比较RF干扰的RF频谱特征图和已知RF干扰源的RF频谱特征图,可以识别出RF干扰源。 RF interference by comparing the characteristics of the RF spectrum and FIG known RF interference source RF spectrum characteristic diagram, can identify RF interference source. 由CSWM完成针对干扰源的通用类型(诸如,Wi-Fi)的特性描述。 CSWM for the completion of a common type of interference sources (such as, Wi-Fi) characterization. 本发明的CSMW还通过下述方式来识别检测到的RF干扰源:使用代表检测到的RF干扰的对应的测量时间的值来确定RF干扰的时间图样(例如,每90分钟或者每个星期四下午2点的RF干扰)。 CSMW present invention further identifies the detected RF interference source in the following manner: using the representative of the detected RF interference measurement values corresponding to the time period to determine RF interference pattern (e.g., every 90 minutes or every Thursday afternoon 2:00 The RF interference). 将该时间图样与已知RF干扰源的时间图样进行比较以识别出RF干扰源。 The time pattern were known RF interference source time pattern comparison to identify RF interference source. 如上面讨论的其他类型的RF干扰信息一样,CSWM能够在主计算机或者网关上显示干扰源类型和时间图样信息。 RF interference as other types of information, as discussed above, CSWM able to display the interference pattern information source type and time on the host computer or gateway.

[0057] 本发明使用了构成无线现场设备网格网络的无线设备中可用的接收RF功率测量能力来检测RF干扰源。 [0057] The present invention uses the received RF power measurement capability in the wireless field device in the mesh network of wireless devices available to detect RF interference sources. 本发明利用无线设备在网内寂静时间期间(诸如开放侦听、寂静子时隙或者开放信道时隙)进行每个RF信道上的多个RSSI测量。 The present invention utilizes a wireless device during the time of silence in the network (such as open listening and silence sub-channel time slots or open) a plurality of RSSI measurements for each RF channel. 在这些时间期间,最可能容易和精确地检测背景或外部RF干扰。 During these times, most likely to easily and accurately detect or external RF background interference. 由无线设备根据接收RF功率测量来确定代表接收RF功率的测量结果的值,以及由网络管理器协调和实现,在定期报告中或者备选地响应于来自CWSM的特定请求,将这些值发送给CWSM。 Determined by the wireless device based on the received RF power measurement representing the received RF power measurement values, as well as by the network manager to coordinate and implement, in the periodic reports or alternatively in response to a specific request from the CWSM will transmit these values to CWSM. 这实现了对有助于检测RF干扰源的精确RF 干扰测量统计的有效收集,以及操作员调整系统以关注于针对特定位置、RF频带或者时间段进行数据收集和分析的灵活性。 This enables the efficient collection of accurate measurement of RF interference can help detect RF interference source statistics, as well as the operator to adjust the system to focus on location-specific, RF frequency band or time period for data collection and analysis flexibility. 通过组合来自多个设备的针对每个RF信道的代表RF功率的测量结果的值和代表对应的测量时间的值,可以在任何时间间隔上逐个信道地分析背景噪声和整个网络的RF频谱。 Through a combination of values from the representative of a plurality of devices for RF power measurement results for each RF channel value representing the corresponding measurement time can be by-channel basis, RF spectrum analysis of the background noise and the entire network at any time interval. 通过将这些分析与已知无线设备位置结合并且利用标准位置和三角算法,来发现RF干扰源的位置。 By these analyzes in conjunction with the known location of a wireless device and use the standard position and triangulation algorithm to find the location of RF interference source. 另外,通过将所述分析和干扰源的通用类型(例如Wi-Fi)的RF特征图进行匹配,来发现RF干扰源的本质特性。 In addition, through the analysis and common interference sources (such as Wi-Fi) in RF matching feature map to discover the essential characteristics of RF interference sources.

[0058] 本发明通过仅报告统计信息而不是每个测量结果,最小化了为了提供对RF干扰的检测和定位所需的每个节点上的能量负担。 [0058] The present invention not only reports the statistics for each measurement, minimizing the burden in order to provide energy for each node RF interference detection and localization required for. 通过在开放侦听、开放信道时隙、以及寂静子时隙测量之间变化,能够相对于所需的能量使用率,平衡针对更积极的干扰检测和定位的需求。 By opening listener, open channel time slot, and changes in the sub-slots between silence measurement, with respect to the utilization of the energy required, more positive balance for interference detection and location requirements. 而且,将数据收集和报告限制于少许节点或充足供电的节点,最小化了在大多数电池供电节点上的能量负担。 Moreover, the data collection and reporting restrictions on a few nodes or sufficient powered nodes, minimizing the energy burden on most battery-powered nodes. 另外,因为网络管理器在整个控制和过程监视系统内以1毫秒内的精确度协调针对所有的无线现场设备网格网络区域的时隙和RF信道分配,所以可以精确地组合来自不同的无线现场设备网格网络区域的无线设备或者接入点的RF干扰信息, 以在连续的基础上提供较大区域上的RF干扰的精确位置。 In addition, because the network manager in the entire process control and monitoring systems within an accuracy of 1 ms coordination for slots and RF channel assignments all wireless field devices area mesh network, so it can accurately from a combination of different wireless site RF device area mesh network access point or a wireless device interference information, in order to provide a larger area of RF interference on a continuous basis on the exact location. 最后,通过以交错的方式协调RSSI报告和接收确认消息的传输,使得添加的传输负担很好地处于无线现场设备网格网络的传输容量内,对于网络操作的负面影响很小。 Finally, in a staggered manner coordinated RSSI reports and to receive transmission confirmation message, so the added burden of transmission is well within the transmission capacity of the mesh network of wireless field devices, for a small negative impact on network operation.

[0059] 已经使用符合IEEE 802. 15. 4标准的无线电装置的示例来描述了本发明。 [0059] have used the example comply with IEEE 802. 15. 4 standard radio device to illustrate the present invention. 然而, 应该理解,本发明包括具有接收RF强度测量功能的其他无线通协议。 However, it should be understood that the present invention includes a receiving RF strength measurement functions other wireless communication protocols. [0060] 尽管已经参考示例性实施例描述了本发明,但是本领域技术人员应该理解,在不偏离本发明的范围的情况下可以做出各种修改以及可以用等效物替代其中的元素。 [0060] Although the embodiment has been described with reference to exemplary embodiments of the present invention, those skilled in the art will appreciate, without departing from the scope of the invention various changes may be made and equivalents may be substituted for elements. 另外, 在不偏离本发明的实质范围的情况下,可以对本发明的教导做出许多修改以适应具体的情形和设备。 In addition, without departing from the spirit and scope of the present invention may be made many modifications to the teachings of the present invention is to adapt a particular situation and equipment. 因此,主旨在于,本发明不限于所公开的具体实施例,相反本发明将包括落在所附权利要求的范围内的所有实施例。 Accordingly, the gist is that the present invention is not limited to the specific embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

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Classifications
International ClassificationH04W24/00, H04B17/00
Cooperative ClassificationY02B60/50, H04B17/345, H04B17/24, H04B17/327, H04W24/08, H04W84/18, H04W88/08
European ClassificationH04B17/00B1C, H04B17/00B4
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