CN103092238A - 用于工业过程现场装置的电源 - Google Patents

用于工业过程现场装置的电源 Download PDF

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CN103092238A
CN103092238A CN2012100429075A CN201210042907A CN103092238A CN 103092238 A CN103092238 A CN 103092238A CN 2012100429075 A CN2012100429075 A CN 2012100429075A CN 201210042907 A CN201210042907 A CN 201210042907A CN 103092238 A CN103092238 A CN 103092238A
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加瓦哈·阿鲁那卡拉姆
尤达亚尚卡尔·班加罗尔·卡斯图里
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Abstract

本发明公开一种在控制或监测工业过程的过程变量时使用的无线工业过程现场装置，包括过程接口元件，该过程接口元件被配置为检测或控制工业过程的过程变量。过程装置电路包括过程接口电路，该过程接口电路被配置为使用过程接口元件测量或控制工业过程的过程变量。无线通信电路被配置为用于无线通信。电源电路被配置为从电力储存元件以输出电压向过程装置电路提供电力。低压降(LDO)电压调节器被配置为降低输出电压。升压转换器被配置为升高输出电压。

Description

用于工业过程现场装置的电源
技术领域
本发明涉及工业过程控制和监测系统。更具体地说，本发明涉及用在工业过程控制和/或监测系统中的无线现场装置。
背景技术
工业过程用在许多工业中以处理或输运各种材料。工业过程例如在炼油厂、食品生产设施、纸浆生产设施等等中实施。
工业过程的操作通常需要监测过程变量。示例性的过程变量包括温度、压力、流量、液位等。被传输的过程变量用来测量过程变量，并且将被测量的过程变量的信息传输到中心位置。这些信息可以用来监测过程，并且可以用于控制过程。例如，可以根据测量流量使用另一种类型的现场装置、控制装置来调整阀。
传统上，过程变量变送器使用有线连接与中心位置通信。有线连接的示例是二线式过程控制回路，通过该回路的电流代表被测量的过程变量。其他通信技术包括在过程控制回路上传输数字信息。同样的二线式过程控制回路可以用于为现场装置提供电力。
无线现场装置被用来测量过程变量和与另一个位置通信，并且不需要上面所述的有线连接。一种无线通信技术采用网状网络配置。一种示例性的通信协议是按照IEC 62591标准的无线
Figure BDA0000137789600000011
通信协议。无线装置的一个好处是不需要将从中心控制位置延伸到现场装置的电线。如果现场装置包括诸如电池之类的内部电源，可以实现布线的进一步减少。然而，如果现场装置是电池供电的，如果其电源耗尽，该装置将停止运型。因此，往往是需要采取措施以减少在现场装置中的功耗，以延长电源的使用寿命。
发明内容
一种在控制或监测工业过程的过程变量时使用的无线工业过程现场装置包括过程接口元件，该过程接口元件被配置为检测或控制工业过程的过程变量。过程装置电路包括过程接口电路，该过程接口电路被配置为使用过程接口元件测量或控制工业过程的过程变量。无线通信电路被配置为用于无线通信。供电电路被配置为从电力储存元件以输出电压向过程装置电路提供电力。低压降(LDO)电压调节器被配置为降低输出电压。升压转换器被配置为升高输出电压。
附图说明
图1是包括无线现场装置的工业过程控制或监控系统的简化示意图。
图2是图1的无线现场装置的简化框图。
图3是显示图1的按照本发明的一个示例性实施例的无线现场装置的电源的简化示意图。
具体实施方式
本发明提供用于诸如过程变量变送器或过程控制器之类的无线现场装置的电源电路。该电源电路包括升压转换器和低压降(LDO)电压调节器，升压转换器和低压降(LDO)电压调节器可以被选择性地连接至现场装置的电源电路。LDO和升压转换器的组合用来提高电池的使用寿命。比较器用来在升压转换器和LDO之间切换。
图1是工业过程控制或监控系统100的简化示意图，其中诸如过程现场装置102之类的现场装置通过过程接口元件104与过程流体108接合。过程流体108例如包含在过程管道106中。现场装置102可以被配置作为过程变量变送器，其中的过程接口元件104可以包括用于检测过程流体108的过程变量的传感器。示例包括温度、流量、液位等。
过程现场装置102通过无线通信链路112与诸如位置110的其他位置通信。位置110包括连接到天线116的通信电路114，天线用于建立通信链路112。位置110例如可以是其中监测或控制过程的操作的中心控制室等。无线通信链路112可以与任何通信协议技术或标准一致。一种示例是按照IEC62591标准的无线
Figure BDA0000137789600000021
通信协议。
图2是过程现场装置102的简化框图。正如图2所示，微处理器200通过过程电路202连接到过程接口元件104。过程电路202例如可以包括放大器、模数转换器等。在这样的配置中，表示检测到的过程变量的数字被提供到微处理器200。微处理器200按照存储在存储器204中的指示操作，并且连接到无线通信电路206。无线通信电路206连接到天线208，天线208链接到显示在图1中的通信链路112。使用这种配置，变送器102可以在通信链接112上接收或传输信息。显示了任选的本地输入/输出(I/O)电路210。例如，可以由操作员使用I/O电路210在本地控制变送器102。图2还图示了连接到电力储存元件222的电源220。如下文中详细讨论，电源220用来从电源储存元件222提供电力到过程变量102的电路。电力储存元件222可以包括任何合适的装置，其能够根据需要储存足够的电力。示例包括电池、可充电电池、包括大容量或“超级”电容器的电子电容器。
过程现场装置102的各种电路元件被配置以基于稳定电源而运行。例如，可能需要3.0伏的稳定电源。然而，由电力储存元件222所提供的电压在其充电或放电循环过程中可能从2.0到3.7伏之间变化。在这样的配置中，通常使用“降压-升压”转换器，其中单个转换器不仅用来升高直流电压以获得所需的输出电压而且用来降低直流电压以获得所需的输出电压。然而，降压-升压转换器消耗来自电力储存元件的额外电力，从而缩短电池寿命。
在运行期间，过程现场装置102使用诸如过程接口元件104之类的过程变量传感器检测过程变量。微处理器200用来控制过程现场装置102的操作和利用无线通信电路206在通信链路112上传输与检测到的过程变量相关的信息。为了增加电力储存元件222元的寿命，过程现场装置102的电路可以进入“休眠”或降低功耗模式。通常情况下，过程现场装置102可以在低功耗模式中运行超过90％的时间。在这样的配置中，所述电路仅需要几十微瓦的功率用于运行。例如，无线通信电路206可以关闭或闲置、微处理器200的速度可以降低、过程电路202可以被禁用等。在活动时间期间，这个电路被通电并且电力需求可能会高达几十毫瓦。当电力储存元件220的电压为3.0伏以上时，电源电路220必须将该电压降低到3.0伏，用于向现场装置102的电路供电。同样地，在电力储存元件220的电压跌落低于3.0伏时，电源220电路必须将该电压升高到3.0伏，以适当地向现场装置102电路供电。现有技术已经使用“降压-升压”转换器。然而，这样的“降压-升压”电路的静态功耗可能是数十微瓦，这将大大减少电力储存元件222的寿命。
图3是按照本发明的一个示例实施例的电源电路220的简化框图。电源电路220包括升压转换器240和LDO(低压降)或“LDO”转换器242。升压转换器240和LDO转换器242可以按照标准的技术运行。例如，升压转换器可以包括开关式或其它升压电源。升压转换器240被配置为接收来自电力储存元件222的小于3伏特的电压，并提供被调节为3.0伏特的输出电压。同样地，LDO转换器242被配置为接收来自电力储存元件222的大于3伏的电压，并且提供为3.0伏的调节输出。模拟开关244被配置为将来自转换器240的输出或来自转换器242的输出选择性地连接到大容量电容器246。此输出被用来提供电力到过程现场装置102的电路。模拟开关244的操作由比较器248控制，比较器248具有被设定到电力储存元件222的输出电压中的所需的转变点的阈值，即3.0伏电压。比较器250也可用于控制升压转换器240的操作，据此如果电池电压大于所需的阈值，升压转换器240断开。因为升压转换器240仅在需要其功能时操作，这样可以节省电力。二极管252连接在模拟开关244和大容量电容器246之间并且操作以在切换转换期间提供电源电压到过程现场装置102的电路，并且改善升压转换器240的稳定时间。
当现场装置的电路所需的功率低时，在与其他电路比较时，通过LDO转换器242的损失会较大。这可以从等式1中看出。
LDO损失＝(电池电压-3)×I负载+静态功耗        等式(1)
公式显示，对于低负载电流，与传统降压-升压转换器相比，功耗较小。作为比较的基础，按照图3的电源被测试并且与传统降压-升压转换器进行比较。表1是用于应用到传统的降压-升压转换器图3中示出的并行LDO/升压转换器配置的不同负荷的实验结果的制表：
表1
Figure BDA0000137789600000051
虽然已经参考优选实施例描述本发明，本领域技术人员将会认识到，在没有背离本发明的精神和范围的情况下可以在形式和细节上进行变化。尽管上述讨论特别地涉及过程接口元件104为包括过程变量传感器，但在某些配置中，过程接口105包括控制元件，该控制元件用来响应于来自微处理器200的输出控制过程的操作。

Claims (21)

1.一种在控制或监测工业过程的过程变量时使用的无线工业过程现场装置，包括：
过程接口元件，被配置为检测或控制工业过程的过程变量；
过程装置电路，所述过程装置电路包括：
过程接口电路，被配置为使用过程接口元件测量或控制工业过程的过程变量；
无线通信电路，被配置为用于无线通信；
电力储存元件；
电源电路，被配置为从电力储存元件以输出电压向过程装置电路提供电力，所述电源电路包括：
低压降(LDO)电压调节器，被配置为降低电力储存元件的电压和将降低的电压提供到过程装置电路；和
升压转换器，被配置为升高电力储存元件的电压和将升高的电压提供到过程装置电路。
2.根据权利要求1所述的无线工业过程现场装置，包括比较器，该比较器被配置为将低压降电压调节器和可替换地升压转换器选择性地连接到过程装置电路。
3.根据权利要求2所述的无线工业过程现场装置，包括比较器被配置为控制模拟开关。
4.根据权利要求2所述的无线工业过程现场装置，其中比较器对电力储存元件的电压输出作出响应。
5.根据权利要求4所述的无线工业过程现场装置，其中比较器将电压阈值与电力储存元件的输出电压进行比较。
6.根据权利要求5所述的无线工业过程现场装置，其中在所述输出电压小于所述电压阈值的情况下，比较器将升压转换器连接到过程装置电路。
7.根据权利要求5所述的无线工业过程现场装置，其中在所述输出电压大于所述电压阈值的情况下，比较器将低压降转换器连接到过程装置电路。
8.根据权利要求6所述的无线工业过程现场装置，其中所述电压阈值为3.0伏特。
9.根据权利要求2所述的无线工业过程现场装置，其中比较器的输出连接到升压转换器。
10.根据权利要求2所述的无线工业过程现场装置，其中在低压降电压调节器连接过程装置电路的情况下，比较器停止升压转换器的操作，从而降低功耗。
11.根据权利要求1所述的无线工业过程现场装置，包括连接到过程装置电路的大容量电容器，该大容量电容器被配置为储存电力。
12.根据权利要求1所述的无线工业过程现场装置，其中电力储存元件是从包括电池或电容器的电力储存元件的组中选择的。
13.根据权利要求1所述的无线工业过程现场装置，包括二极管，该二极管被配置为将低压降电压调节器连接到过程装置电路。
14.一种向在控制或监测工业过程的过程变量中使用的类型的无线工业过程现场装置供电的方法，所述方法包括下述步骤：
提供过程接口元件，该过程接口元件被配置为检测或控制工业过程的过程变量；
提供过程装置电路，该过程装置电路被配置为使用过程接口元件进行操作，其中过程装置电路包括被配置为用于无线通信的无线通信电路；
提供电力储存元件；
提供低压降电压调节器，该低压降电压调节器用于降低电力储存元件的电压和将降低的电压提供到过程装置电路；以及
提供升压转换器，该升压转换器用于升高电力储存元件的输出电压和将升高的电压提供到过程装置电路。
15.根据权利要求14所述的方法，包括将低压降电压调节器和可替换地升压转换器选择性地连接到过程装置电路的步骤。
16.根据权利要求15所述的方法，其中所述将低压降电压调节器和可替换地升压转换器选择性地连接到过程装置电路的步骤基于电压阈值与电力储存元件的输出电压的比较。
17.根据权利要求16所述的方法，其中在所述输出电压小于所述电压阈值的情况下，所述将低压降电压调节器和可替换地升压转换器选择性地连接到过程装置电路的步骤将升压转换器连接到过程装置电路。
18.根据权利要求16所述的方法，其中在所述输出电压大于所述电压阈值的情况下，所述将低压降电压调节器和可替换地升压转换器选择性地连接到过程装置电路的步骤将低压降转换器连接到过程装置电路。
19.根据权利要求15所述的方法，其中所述电压阈值为3.0伏特。
20.根据权利要求14所述的方法，包括在低压降电压调节器连接过程装置电路时停止升压转换器的操作，从而降低功耗的步骤。
21.根据权利要求15所述的方法，包括将大容量电容器连接到过程装置电路以储存电力的步骤。
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Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8929948B2 (en) 2008-06-17 2015-01-06 Rosemount Inc. Wireless communication adapter for field devices
US9674976B2 (en) 2009-06-16 2017-06-06 Rosemount Inc. Wireless process communication adapter with improved encapsulation
US10761524B2 (en) 2010-08-12 2020-09-01 Rosemount Inc. Wireless adapter with process diagnostics
US9310794B2 (en) 2011-10-27 2016-04-12 Rosemount Inc. Power supply for industrial process field device
CN103399239B (zh) * 2013-08-12 2016-03-02 四川大学 工业设备电压暂降免疫力的检测方法
CH709334B1 (fr) * 2014-03-04 2018-08-15 Dassym Sa C/O Lnnoparc Procédé pour détecter une stérilisation d'une pièce pour un dispositif médical.
CN104049717B (zh) * 2014-06-16 2017-02-22 天地融科技股份有限公司 节电控制电路和电子设备
WO2016042593A1 (ja) * 2014-09-16 2016-03-24 日立オートモティブシステムズ株式会社 センサ装置
JP6466761B2 (ja) * 2015-03-31 2019-02-06 ラピスセミコンダクタ株式会社 半導体装置、及び電源供給方法
US10937299B2 (en) * 2017-06-08 2021-03-02 Rosemount Inc. Current diagnostics for field devices
CN109861514A (zh) * 2018-11-13 2019-06-07 广州金升阳科技有限公司 一种启动控制方法及电路
DE102018131685A1 (de) * 2018-12-11 2020-06-18 Endress+Hauser SE+Co. KG Feldgeräteadapter zur drahtlosen Datenübertragung
CN111682615A (zh) * 2020-06-18 2020-09-18 格力博(江苏)股份有限公司 充电控制电路、充电装置及充电系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090102449A1 (en) * 2007-10-19 2009-04-23 Syspotek Corporation Power supply device with voltage converter circuit
US20100109331A1 (en) * 2008-11-03 2010-05-06 Hedtke Robert C Industrial process power scavenging device and method of deriving process device power from an industrial process
CN101821686A (zh) * 2007-10-05 2010-09-01 罗斯蒙德公司 用于现场设备的rf适配器
CN102067048A (zh) * 2008-06-17 2011-05-18 罗斯蒙德公司 用于具有可变压降的现场设备的rf适配器
CN202694194U (zh) * 2011-10-27 2013-01-23 罗斯蒙德公司 无线工业过程现场装置

Family Cites Families (424)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533339A (en) 1946-06-22 1950-12-12 Jabez Burns & Sons Inc Flammable vapor protection
US2640667A (en) 1950-05-01 1953-06-02 R L House Electrical service connector
US2883489A (en) 1954-12-06 1959-04-21 Daystrom Inc Encased electrical instrument
US3012432A (en) 1957-09-23 1961-12-12 Richard H Moore Leak tester
GB1023042A (en) 1962-05-07 1966-03-16 Wayne Kerr Lab Ltd Improvements in or relating to pressure responsive apparatus
US3232712A (en) 1962-08-16 1966-02-01 Continental Lab Inc Gas detector and analyzer
GB1027719A (zh) 1963-12-02
US3374112A (en) 1964-03-05 1968-03-19 Yeda Res & Dev Method and apparatus for controlled deposition of a thin conductive layer
US3249833A (en) 1964-11-16 1966-05-03 Robert E Vosteen Capacitor transducer
US3568762A (en) 1967-05-23 1971-03-09 Rca Corp Heat pipe
US3557621A (en) 1969-07-07 1971-01-26 C G S Scient Corp Inc Variable capacitance detecting devices
US3631264A (en) 1970-02-11 1971-12-28 Sybron Corp Intrinsically safe electrical barrier system and improvements therein
US3612851A (en) 1970-04-17 1971-10-12 Lewis Eng Co Rotatably adjustable indicator instrument
GB1354025A (en) 1970-05-25 1974-06-05 Medicor Muevek Capacitive pressure transducer
US3633053A (en) 1970-06-18 1972-01-04 Systron Donner Corp Vibration transducer
US3742450A (en) 1971-05-12 1973-06-26 Bell Telephone Labor Inc Isolating power supply for communication loop
US3881962A (en) 1971-07-29 1975-05-06 Gen Atomic Co Thermoelectric generator including catalytic burner and cylindrical jacket containing heat exchange fluid
US3924219A (en) 1971-12-22 1975-12-02 Minnesota Mining & Mfg Gas detection device
US3885432A (en) 1972-03-06 1975-05-27 Fischer & Porter Co Vortex-type mass flowmeters
GB1397435A (en) 1972-08-25 1975-06-11 Hull F R Regenerative vapour power plant
US3808480A (en) 1973-04-16 1974-04-30 Bunker Ramo Capacitive pressure transducer
US4005319A (en) 1973-04-23 1977-01-25 Saab-Scania Aktiebolag Piezoelectric generator operated by fluid flow
US3931532A (en) 1974-03-19 1976-01-06 The United States Of America As Represented By The United States National Aeronautics And Space Administration Thermoelectric power system
GB1525709A (en) 1975-04-10 1978-09-20 Chloride Silent Power Ltd Thermo-electric generators
US4125122A (en) 1975-08-11 1978-11-14 Stachurski John Z O Direct energy conversion device
US4008619A (en) 1975-11-17 1977-02-22 Mks Instruments, Inc. Vacuum monitoring
US4177496A (en) 1976-03-12 1979-12-04 Kavlico Corporation Capacitive pressure transducer
US4084155A (en) 1976-10-05 1978-04-11 Fischer & Porter Co. Two-wire transmitter with totalizing counter
US4158217A (en) 1976-12-02 1979-06-12 Kaylico Corporation Capacitive pressure transducer with improved electrode
SE7713507L (sv) 1976-12-02 1978-06-03 Garrett Corp Sett och anordning for bestemning av ett massaflode
US4063349A (en) 1976-12-02 1977-12-20 Honeywell Information Systems Inc. Method of protecting micropackages from their environment
DE2710211A1 (de) 1977-03-09 1978-09-14 Licentia Gmbh Verfahren zur herstellung von vergossenen elektrischen schaltungen mit zugaenglichen bauteilen
US4168518A (en) 1977-05-10 1979-09-18 Lee Shih Y Capacitor transducer
GR67600B (zh) 1979-06-29 1981-08-31 Payot Jocelyne
US4227419A (en) 1979-09-04 1980-10-14 Kavlico Corporation Capacitive pressure transducer
US4322775A (en) 1979-10-29 1982-03-30 Delatorre Leroy C Capacitive pressure sensor
US4434451A (en) 1979-10-29 1984-02-28 Delatorre Leroy C Pressure sensors
US4295179A (en) 1979-12-18 1981-10-13 Northern Telecom Limited Electric test equipment housing
US4287553A (en) 1980-06-06 1981-09-01 The Bendix Corporation Capacitive pressure transducer
US4336567A (en) 1980-06-30 1982-06-22 The Bendix Corporation Differential pressure transducer
US4361045A (en) 1980-08-29 1982-11-30 Aisin Seiki Company, Limited Vibration sensor
US4370890A (en) 1980-10-06 1983-02-01 Rosemount Inc. Capacitive pressure transducer with isolated sensing diaphragm
US4390321A (en) 1980-10-14 1983-06-28 American Davidson, Inc. Control apparatus and method for an oil-well pump assembly
US4358814A (en) 1980-10-27 1982-11-09 Setra Systems, Inc. Capacitive pressure sensor
US4485670A (en) 1981-02-13 1984-12-04 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Heat pipe cooled probe
US4383801A (en) 1981-03-02 1983-05-17 Pryor Dale H Wind turbine with adjustable air foils
US4422335A (en) 1981-03-25 1983-12-27 The Bendix Corporation Pressure transducer
US4458537A (en) 1981-05-11 1984-07-10 Combustion Engineering, Inc. High accuracy differential pressure capacitive transducer
US4389895A (en) 1981-07-27 1983-06-28 Rosemount Inc. Capacitance pressure sensor
US4455874A (en) 1981-12-28 1984-06-26 Paroscientific, Inc. Digital pressure transducer
IT1197596B (it) 1982-03-05 1988-12-06 Aeg Elotherm Gmbh Procedimento ed apparecchio per l'indurimento superficiale di pezzi in ghisa
US4570217A (en) 1982-03-29 1986-02-11 Allen Bruce S Man machine interface
US4475047A (en) 1982-04-29 1984-10-02 At&T Bell Laboratories Uninterruptible power supplies
US4422125A (en) 1982-05-21 1983-12-20 The Bendix Corporation Pressure transducer with an invariable reference capacitor
SE445389B (sv) 1982-06-28 1986-06-16 Geotronics Ab Forfarande och anordning for att erhalla metdata fran en kemisk process
US4510400A (en) 1982-08-12 1985-04-09 Zenith Electronics Corporation Switching regulator power supply
US4476853A (en) 1982-09-28 1984-10-16 Arbogast Clayton C Solar energy recovery system
US4459537A (en) 1982-11-22 1984-07-10 General Motors Corporation Up-down voltage regulator
DE3340834A1 (de) 1983-11-11 1985-05-23 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zur konstanthaltung der temperaturabhaengigen empfindlichkeit eines differenzdruckmessgeraetes
US4490773A (en) 1983-12-19 1984-12-25 United Technologies Corporation Capacitive pressure transducer
US4542436A (en) 1984-04-10 1985-09-17 Johnson Service Company Linearized capacitive pressure transducer
US4639542A (en) 1984-06-11 1987-01-27 Ga Technologies Inc. Modular thermoelectric conversion system
US4562742A (en) 1984-08-07 1986-01-07 Bell Microcomponents, Inc. Capacitive pressure transducer
GB8426964D0 (en) 1984-10-25 1984-11-28 Sieger Ltd Adjusting circuit parameter
US4701938A (en) 1984-11-03 1987-10-20 Keystone International, Inc. Data system
DE3503347A1 (de) 1985-02-01 1986-08-14 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Vorrichtung zur drahtlosen messsignaluebertragung
US4670733A (en) 1985-07-01 1987-06-02 Bell Microsensors, Inc. Differential pressure transducer
US5060295A (en) 1985-11-15 1991-10-22 Motorola, Inc. Radio device with controlled port and method of port control
DE3541974A1 (de) 1985-11-28 1987-06-04 Danfoss As Schutzschaltung fuer die induktionsspule eines magnetisch-induktiven durchflussmessers
US4860232A (en) 1987-04-22 1989-08-22 Massachusetts Institute Of Technology Digital technique for precise measurement of variable capacitance
US4785669A (en) 1987-05-18 1988-11-22 Mks Instruments, Inc. Absolute capacitance manometers
CH672368A5 (en) 1987-08-20 1989-11-15 Rudolf Staempfli Solar thermal power plant with expansive heat engine - utilises pressure increase of working fluid in thermal storage heater transmitting energy between two closed circuits
US4875369A (en) 1987-09-08 1989-10-24 Panex Corporation Pressure sensor system
JPH0267794U (zh) 1988-05-18 1990-05-22
US4878012A (en) 1988-06-10 1989-10-31 Rosemount Inc. Charge balanced feedback transmitter
US4977480A (en) 1988-09-14 1990-12-11 Fuji Koki Mfg. Co., Ltd. Variable-capacitance type sensor and variable-capacitance type sensor system using the same
US4926674A (en) 1988-11-03 1990-05-22 Innovex Inc. Self-zeroing pressure signal generator
US5023746A (en) 1988-12-05 1991-06-11 Epstein Barry M Suppression of transients by current sharing
DE3842379A1 (de) 1988-12-16 1990-06-21 Heinrichs Messgeraete Josef Elektromagnetanordnung an einem messgeraet in explosionsgeschuetzter ausfuehrung
US4951174A (en) 1988-12-30 1990-08-21 United Technologies Corporation Capacitive pressure sensor with third encircling plate
US5014176A (en) 1989-02-21 1991-05-07 Raytheon Company Switching converter with spike limiting circuit
US4982412A (en) 1989-03-13 1991-01-01 Moore Push-Pin Company Apparatus and method for counting a plurality of similar articles
JPH0769750B2 (ja) 1989-09-08 1995-07-31 三菱電機株式会社 太陽電池電源系
US5107366A (en) 1989-09-28 1992-04-21 Nicolet Instrument Corporation High efficiency electromagnetic coil apparatus and method
DE69127075T2 (de) 1990-02-21 1998-02-26 Rosemount Inc Mehrfunktionsisolationstransformator
US5009311A (en) 1990-06-11 1991-04-23 Schenk Robert J Removable rigid support structure for circuit cards
US5079562A (en) 1990-07-03 1992-01-07 Radio Frequency Systems, Inc. Multiband antenna
US5194819A (en) 1990-08-10 1993-03-16 Setra Systems, Inc. Linearized capacitance sensor system
USD331370S (en) 1990-11-15 1992-12-01 Titan Industries, Inc. Programmable additive controller
US5094109A (en) 1990-12-06 1992-03-10 Rosemount Inc. Pressure transmitter with stress isolation depression
US5223763A (en) 1991-02-28 1993-06-29 Hughes Aircraft Company Wind power generator and velocimeter
JPH04335796A (ja) 1991-05-13 1992-11-24 Toshiba Corp ハンドヘルドターミナル
US5168419A (en) 1991-07-16 1992-12-01 Panex Corporation Capacitor and pressure transducer
DE4124662A1 (de) 1991-07-25 1993-01-28 Fibronix Sensoren Gmbh Relativdrucksensor
US5230250A (en) 1991-09-03 1993-07-27 Delatorre Leroy C Capacitor and pressure transducer
US5170671A (en) 1991-09-12 1992-12-15 National Science Council Disk-type vortex flowmeter and method for measuring flow rate using disk-type vortex shedder
US5233875A (en) 1992-05-04 1993-08-10 Kavlico Corporation Stable capacitive pressure transducer system
US5329818A (en) 1992-05-28 1994-07-19 Rosemount Inc. Correction of a pressure indication in a pressure transducer due to variations of an environmental condition
USD345107S (en) 1992-06-01 1994-03-15 Titan Industries, Inc. Programmable additive controller
US5492016A (en) 1992-06-15 1996-02-20 Industrial Sensors, Inc. Capacitive melt pressure measurement with center-mounted electrode post
US5313831A (en) 1992-07-31 1994-05-24 Paul Beckman Radial junction thermal flowmeter
US5506757A (en) 1993-06-14 1996-04-09 Macsema, Inc. Compact electronic data module with nonvolatile memory
US5412535A (en) 1993-08-24 1995-05-02 Convex Computer Corporation Apparatus and method for cooling electronic devices
CA2169721A1 (en) 1993-09-07 1995-03-16 David A. Broden Multivariable transmitter
US5606513A (en) 1993-09-20 1997-02-25 Rosemount Inc. Transmitter having input for receiving a process variable from a remote sensor
JP3111816B2 (ja) 1993-10-08 2000-11-27 株式会社日立製作所 プロセス状態検出装置
US5542300A (en) 1994-01-24 1996-08-06 Setra Systems, Inc. Low cost, center-mounted capacitive pressure sensor
US5642301A (en) 1994-01-25 1997-06-24 Rosemount Inc. Transmitter with improved compensation
DE4403180C1 (de) 1994-02-02 1995-03-16 Hansa Metallwerke Ag Einrichtung zur Umwandlung von in Fluidsystemen herrschenden Druckschwankungen in elektrische Energie
US5535243A (en) 1994-07-13 1996-07-09 Rosemount Inc. Power supply for field mounted transmitter
US5546804A (en) 1994-08-11 1996-08-20 Rosemount Inc. Transmitter with moisture draining housing and improved method of mounting RFI filters
US5583294A (en) 1994-08-22 1996-12-10 The Foxboro Company Differential pressure transmitter having an integral flame arresting body and overrange diaphragm
US5531936A (en) 1994-08-31 1996-07-02 Board Of Trustees Operating Michigan State University Alkali metal quaternary chalcogenides and process for the preparation thereof
FR2725320B1 (fr) 1994-09-29 1996-10-31 Schneider Electric Sa Dispositif de declenchement comportant au moins un transformateur de courant
US5710552A (en) 1994-09-30 1998-01-20 Rosemount Inc. Barrier device
DE69529180T2 (de) 1994-10-24 2003-09-25 Fisher Rosemount Systems Inc Feldgeräte zur Verwendung in einem verteilten Steuerungssystem
US5793963A (en) 1994-10-24 1998-08-11 Fisher Rosemount Systems, Inc. Apparatus for providing non-redundant secondary access to field devices in a distributed control system
JPH08125767A (ja) 1994-10-24 1996-05-17 Matsushita Electric Ind Co Ltd 端末網制御装置
US5656782A (en) 1994-12-06 1997-08-12 The Foxboro Company Pressure sealed housing apparatus and methods
DE69523136T2 (de) 1995-01-30 2002-06-20 Alcatel Sa Übertragungsverfahren und Sender mit einem entkoppelten niedrigen Pegel und mit mindestens einem gekoppelten hohen Pegel, Schnittstellenschaltung und Systemkomponente für ein Telekommunikationsnetzwerk, die einen solchen Sender enthalten
ES2122491T3 (es) 1995-02-24 1998-12-16 Hewlett Packard Co Dispositivo para impedir interferencias electromagneticas.
US5637802A (en) 1995-02-28 1997-06-10 Rosemount Inc. Capacitive pressure sensor for a pressure transmitted where electric field emanates substantially from back sides of plates
JP3579954B2 (ja) 1995-03-07 2004-10-20 オムロン株式会社 近接センサ
US5644185A (en) 1995-06-19 1997-07-01 Miller; Joel V. Multi stage thermoelectric power generation using an ammonia absorption refrigeration cycle and thermoelectric elements at numerous locations in the cycle
US5610552A (en) 1995-07-28 1997-03-11 Rosemount, Inc. Isolation circuitry for transmitter electronics in process control system
US5599172A (en) 1995-07-31 1997-02-04 Mccabe; Francis J. Wind energy conversion system
JP3067604B2 (ja) 1995-08-25 2000-07-17 株式会社日立製作所 本質安全防爆バリア及びフィールドバスシステム
US5705978A (en) 1995-09-29 1998-01-06 Rosemount Inc. Process control transmitter
US6126327A (en) 1995-10-16 2000-10-03 Packard Bell Nec Radio flash update
JPH09130289A (ja) 1995-10-31 1997-05-16 Mitsubishi Electric Corp アナログ携帯通信機
US5992240A (en) 1995-11-21 1999-11-30 Fuji Electric Co., Ltd. Pressure detecting apparatus for measuring pressure based on detected capacitance
JP3547878B2 (ja) 1995-12-27 2004-07-28 株式会社東芝 充電装置
US5757608A (en) 1996-01-25 1998-05-26 Alliedsignal Inc. Compensated pressure transducer
US5764891A (en) 1996-02-15 1998-06-09 Rosemount Inc. Process I/O to fieldbus interface circuit
US5672832A (en) 1996-02-15 1997-09-30 Nt International, Inc. Chemically inert flow meter within caustic fluids having non-contaminating body
US5665899A (en) 1996-02-23 1997-09-09 Rosemount Inc. Pressure sensor diagnostics in a process transmitter
US5726845A (en) 1996-02-28 1998-03-10 Astec International Limited Short circuit protection for power factor correction circuit
US5754419A (en) 1996-02-28 1998-05-19 Astec International Limited Surge and overcurrent limiting circuit for power converters
US6907383B2 (en) 1996-03-28 2005-06-14 Rosemount Inc. Flow diagnostic system
US7949495B2 (en) 1996-03-28 2011-05-24 Rosemount, Inc. Process variable transmitter with diagnostics
FR2747238B1 (fr) 1996-04-04 1998-07-10 France Etat Generateur thermoelectrique
DE19622295A1 (de) 1996-05-22 1997-11-27 Hartmann & Braun Ag Anordnung zur Datenübertragung in Prozeßleitsystemen
US5811201A (en) 1996-08-16 1998-09-22 Southern California Edison Company Power generation system utilizing turbine and fuel cell
ES2127122B1 (es) 1996-09-02 1999-12-16 Blaquez Navarro Vicente Sistema mejorado electronico autonomo de monitorizacion para purgadores, valvulas e instalaciones en tiempo real.
US5803604A (en) 1996-09-30 1998-09-08 Exergen Corporation Thermocouple transmitter
US5954526A (en) 1996-10-04 1999-09-21 Rosemount Inc. Process control transmitter with electrical feedthrough assembly
US5851083A (en) 1996-10-04 1998-12-22 Rosemount Inc. Microwave level gauge having an adapter with a thermal barrier
US5970430A (en) 1996-10-04 1999-10-19 Fisher Controls International, Inc. Local device and process diagnostics in a process control network having distributed control functions
US5957727A (en) 1996-12-12 1999-09-28 The Whitaker Corporation Electrical connector assembly
DE19653291C1 (de) 1996-12-20 1998-04-02 Pepperl & Fuchs Sensor- und Auswertesystem, insbesondere für Doppelsensoren zur Endlagen- und Grenzwerterfassung
US6747573B1 (en) 1997-02-12 2004-06-08 Enocean Gmbh Apparatus and method for generating coded high-frequency signals
US6665192B2 (en) 1997-02-18 2003-12-16 Koninklijke Philips Electronics N.V. Synthetic resin capping layer on a printed circuit
US6458319B1 (en) 1997-03-18 2002-10-01 California Institute Of Technology High performance P-type thermoelectric materials and methods of preparation
US6013204A (en) 1997-03-28 2000-01-11 Board Of Trustees Operating Michigan State University Alkali metal chalcogenides of bismuth alone or with antimony
US7068991B2 (en) 1997-05-09 2006-06-27 Parise Ronald J Remote power recharge for electronic equipment
US6792259B1 (en) 1997-05-09 2004-09-14 Ronald J. Parise Remote power communication system and method thereof
US6062095A (en) 1997-06-09 2000-05-16 Magnetrol International Dual compartment instrument housing
US5911162A (en) 1997-06-20 1999-06-08 Mks Instruments, Inc. Capacitive pressure transducer with improved electrode support
US5872494A (en) 1997-06-27 1999-02-16 Rosemount Inc. Level gage waveguide process seal having wavelength-based dimensions
US5959372A (en) 1997-07-21 1999-09-28 Emerson Electric Co. Power management circuit
RU2131934C1 (ru) 1997-09-01 1999-06-20 Санков Олег Николаевич Нагревательная установка для обработки материалов
US6282247B1 (en) 1997-09-12 2001-08-28 Ericsson Inc. Method and apparatus for digital compensation of radio distortion over a wide range of temperatures
US6104759A (en) 1997-09-15 2000-08-15 Research In Motion Limited Power supply system for a packet-switched radio transmitter
FR2768527B1 (fr) 1997-09-18 2000-07-13 Sgs Thomson Microelectronics Regulateur de tension
US6109979A (en) 1997-10-31 2000-08-29 Micro Motion, Inc. Explosion proof feedthrough connector
US6823072B1 (en) 1997-12-08 2004-11-23 Thomson Licensing S.A. Peak to peak signal detector for audio system
EP2270446A1 (de) 1998-03-17 2011-01-05 Endress + Hauser GmbH + Co. KG Elektronisches Gerät für den Einsatz in explosionsgefährdeten Bereichen
EP1071934B1 (de) 1998-04-09 2002-02-13 Plöchinger, Heinz Kapazitive druck- oder kraftsensorstruktur und verfahren zur herstellung derselben
DE19816936A1 (de) 1998-04-16 1999-10-21 Siemens Ag Antennen-Transponder-Anordnung zur Energieübertragung und Winkelmessung
US6891838B1 (en) 1998-06-22 2005-05-10 Statsignal Ipc, Llc System and method for monitoring and controlling residential devices
US6437692B1 (en) 1998-06-22 2002-08-20 Statsignal Systems, Inc. System and method for monitoring and controlling remote devices
EP1088206A1 (en) 1998-06-26 2001-04-04 Texaco Development Corporation Thermocouple for use in gasification process
US6360277B1 (en) 1998-07-22 2002-03-19 Crydom Corporation Addressable intelligent relay
US6480699B1 (en) 1998-08-28 2002-11-12 Woodtoga Holdings Company Stand-alone device for transmitting a wireless signal containing data from a memory or a sensor
US6405139B1 (en) 1998-09-15 2002-06-11 Bently Nevada Corporation System for monitoring plant assets including machinery
US6236096B1 (en) 1998-10-06 2001-05-22 National Science Council Of Republic Of China Structure of a three-electrode capacitive pressure sensor
US6312617B1 (en) 1998-10-13 2001-11-06 Board Of Trustees Operating Michigan State University Conductive isostructural compounds
US6615074B2 (en) 1998-12-22 2003-09-02 University Of Pittsburgh Of The Commonwealth System Of Higher Education Apparatus for energizing a remote station and related method
US7640007B2 (en) 1999-02-12 2009-12-29 Fisher-Rosemount Systems, Inc. Wireless handheld communicator in a process control environment
TW420911B (en) 1999-03-15 2001-02-01 Actpro Internat Hk Ltd Mixed mode transceiver digital control network and collision-free communication method
US6127739A (en) 1999-03-22 2000-10-03 Appa; Kari Jet assisted counter rotating wind turbine
US6783167B2 (en) 1999-03-24 2004-08-31 Donnelly Corporation Safety system for a closed compartment of a vehicle
US6640308B1 (en) 1999-04-16 2003-10-28 Invensys Systems, Inc. System and method of powering and communicating field ethernet device for an instrumentation and control using a single pair of powered ethernet wire
FI111760B (fi) 1999-04-16 2003-09-15 Metso Automation Oy Kenttälaitteen langaton ohjaus teollisuusprosessissa
US6295875B1 (en) 1999-05-14 2001-10-02 Rosemount Inc. Process pressure measurement devices with improved error compensation
US6508131B2 (en) 1999-05-14 2003-01-21 Rosemount Inc. Process sensor module having a single ungrounded input/output conductor
FI991452A (fi) 1999-06-24 2000-12-25 Nokia Networks Oy EMI-tiivistys
US7064671B2 (en) 2000-06-23 2006-06-20 Fisher Controls International Llc Low power regulator system and method
DE19930661A1 (de) 1999-07-02 2001-01-18 Siemens Ag Meßumformer
US6255010B1 (en) 1999-07-19 2001-07-03 Siemens Westinghouse Power Corporation Single module pressurized fuel cell turbine generator system
US6385972B1 (en) 1999-08-30 2002-05-14 Oscar Lee Fellows Thermoacoustic resonator
US6510740B1 (en) 1999-09-28 2003-01-28 Rosemount Inc. Thermal management in a pressure transmitter
JP3798693B2 (ja) 1999-09-28 2006-07-19 ローズマウント インコーポレイテッド 周囲密封式の計器ループ用アダプタ
US6571132B1 (en) 1999-09-28 2003-05-27 Rosemount Inc. Component type adaptation in a transducer assembly
US6484107B1 (en) 1999-09-28 2002-11-19 Rosemount Inc. Selectable on-off logic modes for a sensor module
US6765968B1 (en) 1999-09-28 2004-07-20 Rosemount Inc. Process transmitter with local databus
US7134354B2 (en) 1999-09-28 2006-11-14 Rosemount Inc. Display for process transmitter
US6487912B1 (en) 1999-09-28 2002-12-03 Rosemount Inc. Preinstallation of a pressure sensor module
US6563908B1 (en) 1999-11-11 2003-05-13 Kevex X-Ray, Inc. High reliability high voltage device housing system
US6667594B2 (en) 1999-11-23 2003-12-23 Honeywell International Inc. Determination of maximum travel of linear actuator
RU2168062C1 (ru) 1999-12-07 2001-05-27 Открытое акционерное общество "Всероссийский научно-исследовательский институт гидротехники им. Б.Е. Веденеева" Ветрогенератор
KR100364078B1 (ko) 1999-12-21 2002-12-12 주식회사 블루맥스 커뮤니케이션 적산 계량기의 무선 원격 검침시스템 및 무선 원격 검침방법
US6934862B2 (en) 2000-01-07 2005-08-23 Robertshaw Controls Company Appliance retrofit monitoring device with a memory storing an electronic signature
CA2314573C (en) 2000-01-13 2009-09-29 Z.I. Probes, Inc. System for acquiring data from a facility and method
US6546805B2 (en) 2000-03-07 2003-04-15 Rosemount Inc. Process fluid transmitter with an environmentally sealed service block
USD439181S1 (en) 2000-03-21 2001-03-20 Rosemount Inc. Pressure transmitter with dual inlet base and dual compartment housing
USD439178S1 (en) 2000-03-21 2001-03-20 Rosemount Inc. Pressure transmitter with dual inlet base and single compartment housing
USD441672S1 (en) 2000-03-21 2001-05-08 Rosemount Inc. Pressure transmitter with dual inlet base and economy housing
USD439180S1 (en) 2000-03-21 2001-03-20 Rosemount Inc. Pressure transmitter with single inlet base and single compartment housing
USD439177S1 (en) 2000-03-21 2001-03-20 Rosemount Inc. Pressure transmitter with single inlet base and economy housing
USD439179S1 (en) 2000-03-21 2001-03-20 Rosemount Inc. Pressure transmitter with single inlet base and dual compartment housing
DE10014272B4 (de) 2000-03-22 2008-06-05 Endress + Hauser Gmbh + Co. Kg Feldgerät, sowie Verfahren zum Umprogrammieren eines Feldgerätes
SE522377C2 (sv) 2000-03-31 2004-02-03 Kvaser Consultant Ab Anordning för att överföra data- och styrkommandon via radioförbindelser i distribuerat styrsystem för en eller flera maskiner och/eller processer
AT410041B (de) 2000-04-17 2003-01-27 Voest Alpine Ind Anlagen Verfahren und einrichtung zur aufnahme von messdaten in einem hüttenwerk
US6441747B1 (en) 2000-04-18 2002-08-27 Motorola, Inc. Wireless system protocol for telemetry monitoring
US6662662B1 (en) 2000-05-04 2003-12-16 Rosemount, Inc. Pressure transmitter with improved isolator system
US6574515B1 (en) 2000-05-12 2003-06-03 Rosemount Inc. Two-wire field-mounted process device
US6504489B1 (en) 2000-05-15 2003-01-07 Rosemount Inc. Process control transmitter having an externally accessible DC circuit common
US6326764B1 (en) 2000-06-05 2001-12-04 Clement Virtudes Portable solar-powered CD player and electrical generator
DE10032774A1 (de) 2000-07-06 2002-01-17 Endress Hauser Gmbh Co Feldgerät
FI114507B (fi) 2000-07-07 2004-10-29 Metso Automation Oy Laitediagnostiikkajärjestelmä
US6690182B2 (en) 2000-07-19 2004-02-10 Virginia Technologies, Inc Embeddable corrosion monitoring-instrument for steel reinforced structures
DE10041160B4 (de) 2000-08-21 2004-01-15 Abb Research Ltd. Containerstation
EP1202145B1 (en) 2000-10-27 2005-02-09 Invensys Systems, Inc. Field device with a transmitter and/ or receiver for wireless data communication
ATE298962T1 (de) 2001-01-12 2005-07-15 Vector Informatik Gmbh Verfahren und vorrichtung zur relevanzprüfung eines kennzeichners
US6686831B2 (en) 2001-01-23 2004-02-03 Invensys Systems, Inc. Variable power control for process control instruments
US6728603B2 (en) 2001-02-08 2004-04-27 Electronic Data Systems Corporation System and method for managing wireless vehicular communications
US6625990B2 (en) 2001-02-09 2003-09-30 Bsst Llc Thermoelectric power generation systems
JP3394996B2 (ja) 2001-03-09 2003-04-07 独立行政法人産業技術総合研究所 最大電力動作点追尾方法及びその装置
DE20107112U1 (de) 2001-04-25 2001-07-05 Abb Patent Gmbh Einrichtung zur Energieversorgung von Feldgeräten
DE10125058B4 (de) 2001-05-22 2014-02-27 Enocean Gmbh Thermisch speisbarer Sender und Sensorsystem
JP2002369554A (ja) 2001-06-06 2002-12-20 Nec Tokin Corp 標示装置
US7136725B1 (en) 2001-06-21 2006-11-14 Paciorek Ronald R Load shed notification method, product, and apparatus
US6774814B2 (en) 2001-06-22 2004-08-10 Network Technologies Group, Llc Pipe-to-soil testing apparatus and methods
JP2003051894A (ja) 2001-08-08 2003-02-21 Mitsubishi Electric Corp プラントの作業管理システム
US7046966B2 (en) 2001-08-24 2006-05-16 Kyocera Wireless Corp. Method and apparatus for assigning data rate in a multichannel communication system
US6781249B2 (en) 2001-08-29 2004-08-24 Hewlett-Packard Development Company, L.P. Retrofittable power supply
EP1293853A1 (de) 2001-09-12 2003-03-19 ENDRESS + HAUSER WETZER GmbH + Co. KG Funkmodul für Feldgerät
US20030134161A1 (en) 2001-09-20 2003-07-17 Gore Makarand P. Protective container with preventative agent therein
US6995685B2 (en) 2001-09-25 2006-02-07 Landis+Gyr, Inc. Utility meter power arrangements and methods
USD471829S1 (en) 2001-10-11 2003-03-18 Rosemount Inc. Dual inlet base pressure instrument
USD472831S1 (en) 2001-10-11 2003-04-08 Rosemount Inc. Single inlet base pressure instrument
JP3815603B2 (ja) 2001-10-29 2006-08-30 横河電機株式会社 通信システム
CA2460290A1 (en) 2001-11-01 2003-05-08 Bliss C. Carkhuff Techniques for monitoring health of vessels containing fluids
US7319191B2 (en) 2001-11-01 2008-01-15 Thermo Fisher Scientific Inc. Signal adapter
DE10161069A1 (de) 2001-12-12 2003-06-18 Endress & Hauser Gmbh & Co Kg Feldgeräteelektronik mit einer Sensoreinheit für kapazitive Füllstandsmessungen in einem Behälter
JP4369236B2 (ja) 2001-12-21 2009-11-18 ビ−エイイ− システムズ パブリック リミテッド カンパニ− センサシステム
JP3874171B2 (ja) 2001-12-26 2007-01-31 横河電機株式会社 二重化通信モジュール装置
DE10390146D2 (de) 2002-01-18 2004-12-09 Amepa Gmbh Verfahren und Vorrichtung zur Bestimmung von Kenngrössen einer Metallschmelze
US7002800B2 (en) 2002-01-25 2006-02-21 Lockheed Martin Corporation Integrated power and cooling architecture
US20030167631A1 (en) 2002-03-05 2003-09-11 Hallenbeck Peter D. Mounting assembly for premises automation system components
US7035773B2 (en) 2002-03-06 2006-04-25 Fisher-Rosemount Systems, Inc. Appendable system and devices for data acquisition, analysis and control
WO2003077431A2 (en) 2002-03-06 2003-09-18 Automatika, Inc Conduit network system
US7081693B2 (en) 2002-03-07 2006-07-25 Microstrain, Inc. Energy harvesting for wireless sensor operation and data transmission
US7256505B2 (en) 2003-03-05 2007-08-14 Microstrain, Inc. Shaft mounted energy harvesting for wireless sensor operation and data transmission
US20100254900A1 (en) 2002-03-18 2010-10-07 Campbell Phil G Biocompatible polymers and Methods of use
US6839546B2 (en) 2002-04-22 2005-01-04 Rosemount Inc. Process transmitter with wireless communication link
US20030204371A1 (en) 2002-04-30 2003-10-30 Chevron U.S.A. Inc. Temporary wireless sensor network system
CA2388451A1 (en) 2002-05-31 2003-11-30 Siemens Milltronics Process Instruments Inc. Method and apparatus for on-board calibration in pulse-echo acoustic ranging system
US20040203984A1 (en) 2002-06-11 2004-10-14 Tai-Her Yang Wireless information device with its transmission power lever adjustable
JP2004021877A (ja) 2002-06-20 2004-01-22 Yokogawa Electric Corp フィールド機器
US6839790B2 (en) 2002-06-21 2005-01-04 Smar Research Corporation Plug and play reconfigurable USB interface for industrial fieldbus network access
US6843110B2 (en) 2002-06-25 2005-01-18 Fluid Components International Llc Method and apparatus for validating the accuracy of a flowmeter
US7132173B2 (en) 2002-06-28 2006-11-07 Advanced Bionics Corporation Self-centering braze assembly
AU2003256377A1 (en) 2002-07-05 2004-01-23 Golden Solar Energy, Inc. Apparatus, system, and method of diagnosing individual photovoltaic cells
AU2003261394A1 (en) 2002-08-05 2004-02-23 Research Foundation Of The State University Of New York System and method for manufacturing embedded conformal electronics
AU2003258602B2 (en) 2002-08-13 2009-05-07 Vega Grieshaber Kg System for the production of a modular structure for the determination of a physical process variable and standardised components
US6838859B2 (en) 2002-08-13 2005-01-04 Reza H. Shah Device for increasing power of extremely low DC voltage
US7109883B2 (en) 2002-09-06 2006-09-19 Rosemount Inc. Low power physical layer for a bus in an industrial transmitter
US7773715B2 (en) 2002-09-06 2010-08-10 Rosemount Inc. Two wire transmitter with isolated can output
EP1540758A1 (en) 2002-09-13 2005-06-15 Proton Energy Systems, Inc. Method and system for balanced control of backup power
CA2406298A1 (en) 2002-09-30 2004-03-30 Siemens Milltronics Process Instruments Inc. Power management mechanism for loop powered time of flight and level measurement systems
US6910332B2 (en) 2002-10-15 2005-06-28 Oscar Lee Fellows Thermoacoustic engine-generator
US7440735B2 (en) 2002-10-23 2008-10-21 Rosemount Inc. Virtual wireless transmitter
US7284127B2 (en) 2002-10-24 2007-10-16 Telefonktiebolaget Lm Ericsson (Publ) Secure communications
JP4043914B2 (ja) 2002-10-25 2008-02-06 矢崎総業株式会社 ワイヤハーネスの止水方法及び止水処理装置
US20040081872A1 (en) 2002-10-28 2004-04-29 Herman Gregory S. Fuel cell stack with heat exchanger
US6750808B2 (en) 2002-10-30 2004-06-15 Maghetrol International Incorporated Process instrument with split intrinsic safety barrier
US6926440B2 (en) 2002-11-01 2005-08-09 The Boeing Company Infrared temperature sensors for solar panel
WO2004043843A1 (ja) 2002-11-12 2004-05-27 Mitsubishi Denki Kabushiki Kaisha エレベータ用ロープ及びエレベータ装置
KR100592360B1 (ko) 2002-11-22 2006-06-22 니혼 앗사쿠단시세이조 가부시키가이샤 기판 내장형 압접 커넥터
JP2004208476A (ja) 2002-12-26 2004-07-22 Toyota Motor Corp 排熱発電装置
US20040159235A1 (en) 2003-02-19 2004-08-19 Marganski Paul J. Low pressure drop canister for fixed bed scrubber applications and method of using same
US6680690B1 (en) 2003-02-28 2004-01-20 Saab Marine Electronics Ab Power efficiency circuit
AU2003212339A1 (en) 2003-03-12 2004-09-30 Abb Research Ltd Arrangement and method for continuously supplying electric power to a field device in a technical system
WO2004082099A1 (de) 2003-03-12 2004-09-23 Abb Research Ltd. Anordnung und verfahren zur drahtlosen versorgung eines feldgerätes in einer verfahrenstechnischen anlage mit elektrischer energie
US6904476B2 (en) 2003-04-04 2005-06-07 Rosemount Inc. Transmitter with dual protocol interface
US7326851B2 (en) 2003-04-11 2008-02-05 Basf Aktiengesellschaft Pb-Ge-Te-compounds for thermoelectric generators or Peltier arrangements
JP2004317593A (ja) 2003-04-11 2004-11-11 Kyocera Mita Corp 画像形成装置
US7043250B1 (en) 2003-04-16 2006-05-09 Verizon Corporate Services Group Inc. Systems and methods for forming and operating a communications network
WO2004094892A2 (en) 2003-04-22 2004-11-04 Linli Zhou Inherently safe system for supplying energy to and exchanging signals with field devices in hazardous areas
US6891477B2 (en) 2003-04-23 2005-05-10 Baker Hughes Incorporated Apparatus and methods for remote monitoring of flow conduits
US20040214543A1 (en) 2003-04-28 2004-10-28 Yasuo Osone Variable capacitor system, microswitch and transmitter-receiver
US7512521B2 (en) 2003-04-30 2009-03-31 Fisher-Rosemount Systems, Inc. Intrinsically safe field maintenance tool with power islands
US7272454B2 (en) 2003-06-05 2007-09-18 Fisher-Rosemount Systems, Inc. Multiple-input/multiple-output control blocks with non-linear predictive capabilities
US7460865B2 (en) 2003-06-18 2008-12-02 Fisher-Rosemount Systems, Inc. Self-configuring communication networks for use with process control systems
US7436797B2 (en) 2003-06-18 2008-10-14 Fisher-Rosemount Systems, Inc. Wireless architecture and support for process control systems
WO2005010522A2 (en) 2003-07-18 2005-02-03 Rosemount Inc. Process diagnostics
US7275213B2 (en) 2003-08-11 2007-09-25 Ricoh Company, Ltd. Configuring a graphical user interface on a multifunction peripheral
US20050046595A1 (en) 2003-08-26 2005-03-03 Mr.John Blyth Solar powered sign annunciator
US8481843B2 (en) 2003-09-12 2013-07-09 Board Of Trustees Operating Michigan State University Silver-containing p-type semiconductor
US7094967B2 (en) 2003-09-24 2006-08-22 Schlumberger Technology Corporation Electrical feedthru
US7627441B2 (en) 2003-09-30 2009-12-01 Rosemount Inc. Process device with vibration based diagnostics
US6932561B2 (en) 2003-10-01 2005-08-23 Wafermasters, Inc. Power generation system
US7016741B2 (en) 2003-10-14 2006-03-21 Rosemount Inc. Process control loop signal converter
US20050082949A1 (en) 2003-10-21 2005-04-21 Michio Tsujiura Piezoelectric generator
SG165149A1 (en) 2003-10-22 2010-10-28 Zhang Yue Ping Integrating an antenna and a filter in the housing of a device package
US7199481B2 (en) 2003-11-07 2007-04-03 William Walter Hirsch Wave energy conversion system
US20050109395A1 (en) 2003-11-25 2005-05-26 Seberger Steven G. Shut down apparatus and method for use with electro-pneumatic controllers
JP4529658B2 (ja) 2003-11-28 2010-08-25 東海ゴム工業株式会社 クイックコネクタ
US7655331B2 (en) 2003-12-01 2010-02-02 Societe Bic Fuel cell supply including information storage device and control system
US8455751B2 (en) 2003-12-02 2013-06-04 Battelle Memorial Institute Thermoelectric devices and applications for the same
US20050139250A1 (en) 2003-12-02 2005-06-30 Battelle Memorial Institute Thermoelectric devices and applications for the same
US7330695B2 (en) 2003-12-12 2008-02-12 Rosemount, Inc. Bus powered wireless transmitter
US7057330B2 (en) 2003-12-18 2006-06-06 Palo Alto Research Center Incorporated Broad frequency band energy scavenger
US7523667B2 (en) 2003-12-23 2009-04-28 Rosemount Inc. Diagnostics of impulse piping in an industrial process
FR2864720B1 (fr) 2003-12-30 2006-06-09 St Microelectronics Sa Gestion du court-circuit dans une inductance d'un convertisseur elevateur de tension
JP4273977B2 (ja) 2004-01-21 2009-06-03 株式会社デンソー エジェクタサイクル
DE202004002891U1 (de) 2004-02-25 2005-07-07 Mts Sensor Technologie Gmbh & Co. Kg Magnetostriktiver Streckensensor
US6984899B1 (en) 2004-03-01 2006-01-10 The United States Of America As Represented By The Secretary Of The Navy Wind dam electric generator and method
DE602005018749D1 (zh) 2004-03-02 2010-02-25 Rosemount Inc
US7079984B2 (en) 2004-03-03 2006-07-18 Fisher-Rosemount Systems, Inc. Abnormal situation prevention in a process plant
US20050201349A1 (en) 2004-03-15 2005-09-15 Honeywell International Inc. Redundant wireless node network with coordinated receiver diversity
US7058521B2 (en) 2004-03-26 2006-06-06 Panametrics, Inc. Low power ultrasonic flow meter
US7515977B2 (en) 2004-03-30 2009-04-07 Fisher-Rosemount Systems, Inc. Integrated configuration system for use in a process plant
US6971274B2 (en) 2004-04-02 2005-12-06 Sierra Instruments, Inc. Immersible thermal mass flow meter
US7073394B2 (en) 2004-04-05 2006-07-11 Rosemount Inc. Scalable averaging insertion vortex flow meter
US20050228509A1 (en) 2004-04-07 2005-10-13 Robert James System, device, and method for adaptively providing a fieldbus link
DE102004020393A1 (de) 2004-04-23 2005-11-10 Endress + Hauser Gmbh + Co. Kg Funkmodul für Feldgeräte der Automatisierungstechnik
US8538560B2 (en) 2004-04-29 2013-09-17 Rosemount Inc. Wireless power and communication unit for process field devices
US7057543B2 (en) 2004-04-29 2006-06-06 Invensys Systems, Inc. Low power method and interface for generating analog waveforms
US8145180B2 (en) 2004-05-21 2012-03-27 Rosemount Inc. Power generation for process devices
US7088285B2 (en) 2004-05-25 2006-08-08 Rosemount Inc. Test apparatus for a waveguide sensing level in a container
US7620409B2 (en) 2004-06-17 2009-11-17 Honeywell International Inc. Wireless communication system with channel hopping and redundant connectivity
CA2510207A1 (en) 2004-06-21 2005-12-21 Inventio Ag Circuit arrangement for limitation of over-voltages in energy storage modules
US7262693B2 (en) 2004-06-28 2007-08-28 Rosemount Inc. Process field device with radio frequency communication
US8787848B2 (en) 2004-06-28 2014-07-22 Rosemount Inc. RF adapter for field device with low voltage intrinsic safety clamping
US8929228B2 (en) 2004-07-01 2015-01-06 Honeywell International Inc. Latency controlled redundant routing
US7116036B2 (en) 2004-08-02 2006-10-03 General Electric Company Energy harvesting system, apparatus and method
US20060028327A1 (en) 2004-08-09 2006-02-09 Delbert Amis Wireless replication, verification, and tracking apparatus and methods for towed vehicles
CA2578490A1 (en) 2004-08-31 2006-03-09 Watlow Electric Manufacturing Company Operations system distributed diagnostic system
JP4501599B2 (ja) 2004-09-01 2010-07-14 株式会社ジェイテクト 電動パワーステアリング装置
US20060063522A1 (en) 2004-09-21 2006-03-23 Mcfarland Norman R Self-powering automated building control components
KR20060027578A (ko) 2004-09-23 2006-03-28 삼성에스디아이 주식회사 이차 전지 모듈 온도 제어 시스템
US20060077917A1 (en) 2004-10-07 2006-04-13 Honeywell International Inc. Architecture and method for enabling use of wireless devices in industrial control
US7433464B2 (en) 2004-10-15 2008-10-07 Universcel Corporation Communications systems and methods using wireline adapters
JP4792851B2 (ja) 2004-11-01 2011-10-12 横河電機株式会社 フィールド機器
EP2527339A1 (en) 2004-11-24 2012-11-28 Abbott Laboratories Chromanylurea compounds that inhibit vanilloid receptor subtype 1 (VR1) receptor and uses thereof
TWI254252B (en) 2004-12-21 2006-05-01 Holtek Semiconductor Inc Power processing interface of passive radio frequency identification system
JP2006180603A (ja) 2004-12-22 2006-07-06 Shindengen Electric Mfg Co Ltd ラインドロップによる電圧降下補正回路
US7680460B2 (en) 2005-01-03 2010-03-16 Rosemount Inc. Wireless process field device diagnostics
US7173343B2 (en) 2005-01-28 2007-02-06 Moshe Kugel EMI energy harvester
US7504807B2 (en) * 2005-02-09 2009-03-17 Panasonic Corporation Switching regulator with voltage step up or pass in standby mode and with voltage step up/step down in normal operation mode
US9184364B2 (en) 2005-03-02 2015-11-10 Rosemount Inc. Pipeline thermoelectric generator assembly
WO2006109362A1 (ja) 2005-04-11 2006-10-19 Taiheiyo Cement Corporation 風力発電装置および風力発電システム
US20060227729A1 (en) 2005-04-12 2006-10-12 Honeywell International Inc. Wireless communication system with collision avoidance protocol
CA2597145C (en) 2005-04-28 2015-03-03 Rosemount Inc. Charging system for field devices
US7742394B2 (en) 2005-06-03 2010-06-22 Honeywell International Inc. Redundantly connected wireless sensor networking methods
US7848223B2 (en) 2005-06-03 2010-12-07 Honeywell International Inc. Redundantly connected wireless sensor networking methods
US8112565B2 (en) 2005-06-08 2012-02-07 Fisher-Rosemount Systems, Inc. Multi-protocol field device interface with automatic bus detection
KR100635405B1 (ko) 2005-06-10 2006-10-19 한국과학기술연구원 마이크로 발전기
US8463319B2 (en) 2005-06-17 2013-06-11 Honeywell International Inc. Wireless application installation, configuration and management tool
JP4676000B2 (ja) 2005-06-27 2011-04-27 ローズマウント インコーポレイテッド 動的に調節可能な電力消費量無線周波数通信を備えたフィールド装置
CN101558133A (zh) 2005-06-28 2009-10-14 社区电力公司 用于自动的模块化生物量发电的方法和装置
US7271679B2 (en) 2005-06-30 2007-09-18 Intermec Ip Corp. Apparatus and method to facilitate wireless communications of automatic data collection devices in potentially hazardous environments
US20070024256A1 (en) * 2005-07-27 2007-02-01 Yi-Chung Chou Switch-mode multiple outputs dcdc converter
US20070030816A1 (en) 2005-08-08 2007-02-08 Honeywell International Inc. Data compression and abnormal situation detection in a wireless sensor network
US7801094B2 (en) 2005-08-08 2010-09-21 Honeywell International Inc. Integrated infrastructure supporting multiple wireless devices
JP2007047130A (ja) 2005-08-12 2007-02-22 Omron Corp 摩擦特性測定装置およびそれに向けられるタイヤ
CN101223624B (zh) 2005-09-09 2011-06-15 株式会社爱发科 离子源和等离子体处理装置
ES2603839T3 (es) 2005-09-16 2017-03-01 Ampacimon S.A. Dispositivo, sistema y método para la monitorización en tiempo real de líneas eléctricas aéreas
US8464168B2 (en) 2005-10-05 2013-06-11 Invensys Systems, Inc. Device home page for use in a device type manager providing graphical user interfaces for viewing and specifying field device parameters
NL1030295C2 (nl) 2005-10-28 2007-05-03 Fei Co Hermetisch afgesloten behuizing met elektrische doorvoer.
JP4577224B2 (ja) 2006-01-23 2010-11-10 ミツミ電機株式会社 無線装置
US7626141B2 (en) 2006-03-20 2009-12-01 Surface Igniter Llc Mounting device gas igniter
DE102006028361B4 (de) 2006-03-22 2013-12-19 Phoenix Contact Gmbh & Co. Kg Elektrisches Feldgerät und Erweiterungsmodul zum Einstecken in ein elektrisches Feldgerät
US7848827B2 (en) 2006-03-31 2010-12-07 Honeywell International Inc. Apparatus, system, and method for wireless diagnostics
US8204078B2 (en) 2006-03-31 2012-06-19 Honeywell International Inc. Apparatus, system, and method for integration of wireless devices with a distributed control system
US7351098B2 (en) 2006-04-13 2008-04-01 Delphi Technologies, Inc. EMI shielded electrical connector and connection system
DE102006020070A1 (de) 2006-04-29 2007-10-31 Abb Patent Gmbh Einrichtung zur Ferdiagnose eines Feldgeräts
US7913566B2 (en) 2006-05-23 2011-03-29 Rosemount Inc. Industrial process device utilizing magnetic induction
KR100744902B1 (ko) 2006-05-24 2007-08-01 삼성전기주식회사 휴대 무선 조작기
US8266602B2 (en) 2006-05-31 2012-09-11 Honeywell International Inc. Apparatus and method for converting between device description languages in a process control system
US7965664B2 (en) 2006-05-31 2011-06-21 Honeywell International Inc. Apparatus and method for integrating wireless field devices with a wired protocol in a process control system
US7876722B2 (en) 2006-05-31 2011-01-25 Honeywell International Inc. System and method for wireless communication between wired field devices and control system components
US7889747B2 (en) 2006-05-31 2011-02-15 Honeywell International Inc. Apparatus, system, and method for integrating a wireless network with wired field devices in a process control system
US7675935B2 (en) 2006-05-31 2010-03-09 Honeywell International Inc. Apparatus and method for integrating wireless or other field devices in a process control system
JP5255189B2 (ja) 2006-05-31 2013-08-07 株式会社ネットコムセック 電源装置及び高周波回路システム
JP2008017663A (ja) 2006-07-07 2008-01-24 Alpine Electronics Inc スイッチング電源装置
DE502006006395D1 (de) 2006-07-11 2010-04-22 Balluff Gmbh Elektrisches Gerät und Verfahren zur Herstellung eines elektrischen Geräts
JP4862540B2 (ja) 2006-08-01 2012-01-25 パナソニック株式会社 アンテナ装置
US7385503B1 (en) 2006-08-03 2008-06-10 Rosemount, Inc. Self powered son device network
US7368827B2 (en) 2006-09-06 2008-05-06 Siemens Power Generation, Inc. Electrical assembly for monitoring conditions in a combustion turbine operating environment
CA2664355C (en) 2006-09-28 2013-01-15 Rosemount Inc. Wireless field device with antenna for industrial locations
US20080088464A1 (en) 2006-09-29 2008-04-17 Gutierrez Francisco M Power System Architecture for Fluid Flow Measurement Systems
US7675932B2 (en) 2006-11-09 2010-03-09 Rosemount Inc. Adapter for providing digital communication between a field device and a computer
EP1925918A3 (de) 2006-11-27 2009-01-21 VEGA Grieshaber KG Anschlussbox zür Übertragung von einem signal
US7644633B2 (en) 2006-12-18 2010-01-12 Rosemount Inc. Vortex flowmeter with temperature compensation
WO2008098583A1 (de) 2007-02-12 2008-08-21 Siemens Aktiengesellschaft Feldgerät zur prozessinstrumentierung
US20080273486A1 (en) 2007-04-13 2008-11-06 Hart Communication Foundation Wireless Protocol Adapter
US8725081B2 (en) 2007-04-13 2014-05-13 Fisher-Rosemount Systems, Inc. Wireless process communication adapter for handheld field maintenance tool
US8230108B2 (en) 2007-04-13 2012-07-24 Hart Communication Foundation Routing packets on a network using directed graphs
US7539593B2 (en) 2007-04-27 2009-05-26 Invensys Systems, Inc. Self-validated measurement systems
US8193784B2 (en) 2007-06-15 2012-06-05 Fisher Controls International Llc Bidirectional DC to DC converter for power storage control in a power scavenging application
JP5357144B2 (ja) 2007-06-15 2013-12-04 フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー パワーを収集するための入力調整ｄｃ−ｄｃ変換器
EP2165419B1 (en) 2007-06-26 2018-01-03 Pepperl + Fuchs GmbH Power management circuit for a wireless communication device and process control system using same
WO2009003146A1 (en) 2007-06-26 2008-12-31 Mactek Corporation Pass-through connection systems and methods for process control field devices
US20090066587A1 (en) 2007-09-12 2009-03-12 Gerard James Hayes Electronic device with cap member antenna element
US7590511B2 (en) 2007-09-25 2009-09-15 Rosemount Inc. Field device for digital process control loop diagnostics
US20090120169A1 (en) 2007-11-12 2009-05-14 Chandler Jr William H Fluid sensor and methods of making components thereof
DE102007054924A1 (de) 2007-11-15 2009-05-20 Endress + Hauser Process Solutions Ag Verfahren zum Betreiben eines Feldgerätes, sowie Kommunikationseinheit und Feldgerät
JP2009131066A (ja) * 2007-11-26 2009-06-11 Fujitsu Ltd 電源回路、および電子機器
DE102007058608A1 (de) 2007-12-04 2009-06-10 Endress + Hauser Flowtec Ag Elektrisches Gerät
US7595763B2 (en) 2007-12-31 2009-09-29 Honeywell International Inc. Wireless device having movable antenna assembly and system and method for process monitoring
US7812466B2 (en) 2008-02-06 2010-10-12 Rosemount Inc. Adjustable resonance frequency vibration power harvester
US8250924B2 (en) 2008-04-22 2012-08-28 Rosemount Inc. Industrial process device utilizing piezoelectric transducer
US8049361B2 (en) 2008-06-17 2011-11-01 Rosemount Inc. RF adapter for field device with loop current bypass
US8929948B2 (en) 2008-06-17 2015-01-06 Rosemount Inc. Wireless communication adapter for field devices
US8694060B2 (en) 2008-06-17 2014-04-08 Rosemount Inc. Form factor and electromagnetic interference protection for process device wireless adapters
US7977816B2 (en) * 2008-12-19 2011-07-12 Silicon Laboratories Inc. DC/DC boost converter with bypass feature
US9674976B2 (en) 2009-06-16 2017-06-06 Rosemount Inc. Wireless process communication adapter with improved encapsulation
US8180948B2 (en) 2009-07-09 2012-05-15 Phoenix Contact America, Inc. Two-wire loop process IO transmitter powered from the two-wire loop
WO2012038579A1 (en) * 2010-09-20 2012-03-29 Nokia Corporation Providing power to a component
EP2533126B1 (en) * 2011-05-25 2020-07-08 Dialog Semiconductor GmbH A low drop-out voltage regulator with dynamic voltage control

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101821686A (zh) * 2007-10-05 2010-09-01 罗斯蒙德公司 用于现场设备的rf适配器
US20090102449A1 (en) * 2007-10-19 2009-04-23 Syspotek Corporation Power supply device with voltage converter circuit
CN102067048A (zh) * 2008-06-17 2011-05-18 罗斯蒙德公司 用于具有可变压降的现场设备的rf适配器
US20100109331A1 (en) * 2008-11-03 2010-05-06 Hedtke Robert C Industrial process power scavenging device and method of deriving process device power from an industrial process
CN202694194U (zh) * 2011-10-27 2013-01-23 罗斯蒙德公司 无线工业过程现场装置

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JP2014532920A (ja) 2014-12-08
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