CN201326909Y - Pipeline safety early warning system of combining sound vibration and electromagnetic wave - Google Patents
Pipeline safety early warning system of combining sound vibration and electromagnetic wave Download PDFInfo
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- CN201326909Y CN201326909Y CNU2008201229215U CN200820122921U CN201326909Y CN 201326909 Y CN201326909 Y CN 201326909Y CN U2008201229215 U CNU2008201229215 U CN U2008201229215U CN 200820122921 U CN200820122921 U CN 200820122921U CN 201326909 Y CN201326909 Y CN 201326909Y
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Abstract
The utility model provides a pipeline safety early warning system of combining sound vibration and electromagnetic wave. The pipeline safety early warning system comprises numerous sound vibration sensor monitoring terminals (1) and receivers (3); each sound vibration sensor monitoring terminal (1) comprises a sensor, a signal modulating circuit, a single chip microcomputer, an impulse signal generator, a data memory, a digital signal processor (DSP), a feature memorizer, a JTAG interface and a power supply module; the output of the sensor is connected with the input of the signal modulating circuit, the output of the signal modulating circuit is connected with the input of the single chip microcomputer, the output of the single chip microcomputer is connected with the impulse signal generator between an output connection pipeline and the ground, the output of the single chip microcomputer also passes through the data memory and is connected with the input of the digital signal processor (DSP), and the digital signal processor (DSP) is used for writing and modifying the programmed JTAG interface and the connection between the JTAG interface and the feature memorizer in the single chip microcomputer and digital signal processor (DSP) systems in an on-line mode; and the entire system is supplied with power by a battery module with a charging interface.
Description
Technical field
The utility model is a kind of acoustical vibration and the compound pipeline safety early warning system of electromagnetism phase of wave.Relate to and measure stress, the measurement of mechanical vibration, the measurement and the pipe-line system technical field of impact.
Background technique
Along with development and national economy, the increase of demand for energy, the oil and gas pipes transportation has obtained using widely as a kind of safe, economic means of transportation.And effectively protect safety, the smooth running of petroleum pipeline, prevent that incidents such as drilling hole of oil stolen, illegal excavation from being very necessary to pipeline destroyed.
The technology that is applied to the pipe safety protection at present mainly contains following several:
1, the method for video frequency pick-up head monitoring.When there is something special in the corresponding region,, and send warning service to analyze, handle by the image information of camera collection corresponding region.Though the signal message amount that this mode is gathered is big, that takes precautions against is regional limited, and cost is often also very high;
2, optical fiber transducer method for early warning.Can carry out long term monitoring to long-distance pipe safety, because the distance of monitoring is longer, pipeline natural condition complexity along the line, so the less stable of this technology also are in the experimental research stage at present;
3, acoustical vibration sensor method for early warning.Can realize the protection of pipeline drilling hole of oil stolen along the line key area, flexible, independently-powered but system needs, the long-term use needs to change battery.
Above-mentioned early warning scheme is all given prominence to a kind of resist technology, does not carry out the fusion of many technology, and its application all has certain narrow limitation, has a lot of problems to solve.
The model utility content
The purpose of this utility model is the acoustical vibration and the compound pipeline safety early warning system of electromagnetism phase of wave of a kind of energy-conservation, hidden, stable, reliable, accurate positioning of design.
The utility model merges the method for acoustical vibration sensor early warning scheme and pipeline sonic detection at the technical requirements of pipe safety defence, proposes a kind of simple and effective structure, finishes destroying the detection and the location of pipeline incident.
Basic principle of the present utility model as shown in Figure 1.It is made up of numerous acoustical vibration sensor monitor terminals 1, receiver 3.Press certain distance numerous acoustical vibration sensor monitor terminals 1 are installed on pipeline 2 at interval, gather the signal that all acoustical vibration monitor terminals 1 send by receiver 3.The distance of each acoustical vibration sensor monitor terminal 1 can change flexibly according to the zone of protection, generally at 1Km between the 10Km.Different different impulse coding mode or the signal frequencies of acoustical vibration sensor monitor terminal 1 corresponding emission; Different location of realizing corresponding vibration detection device by this coded system and frequency; The number of acoustical vibration sensor monitor terminal 1 also can be adjusted flexibly.The main effect of acoustical vibration sensor monitor terminal 1 is according to the impend detection of incident of the highly sensitive sensing probe in inside.
The theory diagram of acoustical vibration sensor monitor terminal 1 is seen Fig. 2.It is made up of sensor, signal conditioning circuit, single-chip microcomputer, pulse signal generator, data storage, digital signal processor DSP, tag memory, jtag interface and power module.The output of sensor is connected with the input of signal conditioning circuit, and the output of signal conditioning circuit connects the input of single-chip microcomputer, and single-chip microcomputer has output to connect pulse signal generator, between pulse signal generator discharge conection road and the ground; Single-chip microcomputer also has output to connect the input of digital signal processor DSP behind data storage, and digital signal processor DSP has jtag interface and has interface to be connected with tag memory.Whole system is by the battery module power supply that has charging inlet.Jtag interface be used for writing with online modification single-chip microcomputer and dsp system in program.
When extraneous incident was touched tube wall, highly sensitive acoustical vibration sensor can be experienced oscillating signal, and sent single-chip microcomputer to carry out preliminary treatment this signal conditioning circuit, found that abnormal signal then activates DSP digital signal processor and carries out further analysing and processing.After in a single day digital signal processor DSP thinks that this incident is the incident that once pipeline is worked the mischief, can give the pulse oscillator that pipeline and the earth is constituted the loop, the pulse that the notice pulse signal generator produces certain frequency and coded system by signal of drive circuit output.Different different impulse coding mode or the signal frequencies of acoustical vibration sensor monitor terminal 1 corresponding emission.The different location that can realize corresponding vibration detection device by this coded system and frequency.
Wherein:
Sensor is the acoustical vibration sensor, and city's pin product is arranged;
Pulse signal generator can produce the pulse signal of different wave, frequency and coded system, has city's pin product to select.
Its electric principle as shown in Figure 3, the output terminal Q of INV9818 sensor meets the Q end of charge amplifier, the V of charge amplifier
0The input end of end, the gain control end of charge amplifier meets the P of single-chip microcomputer MSP430F149
1.1, P
1.2, the Vi end of output end vo ut tape splicing bandpass filter, the Vo termination has the A/D conversion ADS8325 of voltage reference REF3325, and CS, the Dclk end of A/D conversion ADS8325 meets the P of single-chip microcomputer MSP430F149 respectively
1.3, UCLKO end, the Dout of A/D conversion ADS8325 connects the SOMIO end by the SPI interface; The P of single-chip microcomputer MSP430F149
1.3For the 6V power supply, triode output is connected on the pipeline by power power-supply TPS62110 for the base stage of termination 2SA966 triode, triode, and the ground wire of power power-supply TPS62110 connects reference electrode ground connection; The TMS termination jtag interface of single-chip microcomputer MSP430F149, P
28 toggle switch of [0..7] termination; The UTXD1 of single-chip microcomputer MSP430F149, URXD1 connect SCIRXDA, the SCITXDA end of dsp processor TMS320F2812 respectively; The P of single-chip microcomputer MSP430F149
5.7, P
6[0..7], P
4[0..7] meets WR, the DA[0..7 of data fifo exchanger IDT72V85 respectively], DB[0..7] end, the RD of data exchange unit IDT72V85, QA[0..7], QB[0..7] end meets XRD, the XD[0..7 of dsp processor TMS320F2812 respectively], XD[8..15] end, the QA[0..7 of data exchange unit IDT72V85], QB[0..7] end meets the D[0..7 of storage CY711041V33 respectively], D[8..15] end, and the A[0..17 of storage CY711041V33], the WE end meets the XA[0..17 of dsp processor TMS320F2812 respectively], the XWE end; The TDI termination jtag interface of dsp processor TMS320F2812; The output of 12V storage battery produces 3.3VA analog power, 3.3VD digital power and motor power respectively through LM2574, LM2574 and TPS62110.
Wherein:
Vibration transducer selects piezoelectricity type vibration transducer INV9818;
Programmable amplifier selects numerically controlled programmable-gain instrumentation amplifier PGA202;
The ADS8325 analog-to-digital conversion device of 16 little power consumption samplings is selected in the A/D conversion;
Pulse signal generator is selected PNP triode 2SA966 type for use;
Data storage selects static RAM (SRAM) storage CY711041V33 type;
The data fifo exchanger selects two-way asynchronous FIFO memory IDT72V85 type;
Single-chip microcomputer selects the super low-power consumption microcontroller MSP430F149 of low power consumption TI company type;
Dsp processor selects American TI company's T MS320 type;
Charge amplifier is special, and its circuit constitutes as shown in Figure 5, is to be made of operational amplifier.
Band-pass filter is special, and its circuit constitutes as shown in Figure 6, is to be made of three operational amplifiers.
Oil and gas pipes is laid on underground, forms the several hundred kilometers pipeline by steel pipe welding, in order to prevent corrosive pipeline, and pipeline one deck good anticorrosive coat that insulate that has been covered outward.In transmission course pipeline is considered as inner wire, anticorrosive coat has been the dielectric layer of insulating effect, and soil all around can be considered outer conductor.Pipeline itself constitutes one can transmit electromagnetic vast of heaven line.Power signal is applied on the pipeline can on pipeline, evokes electromagnetic wave and propagate, can realize promptly that by different coded systems pipeline threatens the information of incident to send and accepts along pipeline.
Wherein:
Computer is selected industrial computer for use;
The signal condition module adopts the HMM-04 of the Shanghai dynamo-electric Co., Ltd of firm human relations, and capture card adopts the PCI5105 of America NI company.
Pipeline acoustical vibration sensor along the line will be launched the pulse signal of different coding after receiving the corresponding warning message that signal processing module provides, pulse shape can be pulse shape, raised cosine pulse waveform, continuous wave or the like.Waveform signal with the different coding mode in the receiver 3 carries out the information that demodulation is converted into 1 transmission of corresponding acoustical vibration sensor monitor terminal.Receiver 3 is corresponding corresponding acoustical vibration sensor monitor terminal 1 according to coded system, therefore can find out the position of concrete generation invasion by the signal that electromagnetic wave sends.The utility model is judged the position that the threat incident takes place by this.
The utlity model has outstanding advantage:
1, acoustical vibration sensor different from the past utilizes pipeline to carry out the transmission of signal as transmission medium, need not external communication antenna, and is both hidden, energy-conservation again, can realize low power consumption work in the open air;
2, utilize pipeline to carry out the transmission of signal as transmission medium; This transmission channel is subjected to external disturbance little, and signal to noise ratio is higher;
3, utilize of the pulse of different sound transducers to receiver emission different coding, the location of realizing breakdown point, method is simple, accurate positioning simultaneously;
4, monitoring distance is far away, can realize the interior monitoring to the pipeline damage incident of tens of kilometer range.
So this pipe safety defence system is energy-conservation, hidden, stable, reliable, accurate positioning.
Description of drawings
The pipeline safety early warning system block diagram that Fig. 1 acoustical vibration and electromagnetism phase of wave are compound
Fig. 2 acoustical vibration sensor monitor terminal theory diagram
Fig. 3 acoustical vibration sensor monitor terminal electrical schematic diagram
Fig. 4 receiver theory diagram
Fig. 5 charge amplifier circuit figure
Fig. 6 band pass filter circuit figure
1-acoustical vibration sensor monitor terminal 2-pipeline wherein
The 3-receiver
Embodiment
Embodiment. this example is mounted in the model machine that certain pipeline Baodi experimentizes to the 100 kilometers pipelines in station, Fangshan, and it constitutes as shown in Figure 1.
According to concrete actual conditions, the acoustical vibration sensor is installed in drilling hole of oil stolen or the multiple zone of mechanical equivalent of light excavation.
This routine basic principle as shown in Figure 1.It is made up of 1,1 receiver 3 of 20 acoustical vibration sensor monitor terminals.Press 1Km and to the distance of 10Km 20 acoustical vibration sensor monitor terminals 1 are installed on pipeline 2 at interval, little at drilling hole of oil stolen or the multiple regional spacing of installing of mechanical equivalent of light excavation, the spacing that general area is installed is big.Gather the signal that all acoustical vibration monitor terminals 1 send by the receiver 3 that is installed in the station, Fangshan.
The theory diagram of acoustical vibration sensor monitor terminal 1 is seen Fig. 2.It is made up of acoustical vibration sensor, signal condition, single-chip microcomputer, pulse signal generator, data storage, digital signal processor DSP, tag memory, jtag interface and power module.The output of sensor is connected with the input of signal condition unit, the output of signal condition unit is connected to the input of pulse signal generator input single-chip microcomputer, the output of single-chip microcomputer connects the input of digital signal processor DSP behind data storage, digital signal processor DSP has jtag interface and has interface to be connected with tag memory.Whole system is by the battery module power supply that has charging inlet.
Its electric principle as shown in Figure 3, the output terminal Q of INV9818 sensor meets the Q end of charge amplifier, the V of charge amplifier
0The input end of end, the gain control end of charge amplifier meets the P of single-chip microcomputer MSP430F149
1.1, P
1.2, the Vi end of output end vo ut tape splicing bandpass filter, the Vo termination has the A/D conversion ADS8325 of voltage reference REF3325, and CS, the Dclk end of A/D conversion ADS8325 meets the P of single-chip microcomputer MSP430F149 respectively
1.3, UCLKO end, the Dout of A/D conversion ADS8325 connects the SOMIO end by the SPI interface; The P of single-chip microcomputer MSP430F149
1.3For the 6V power supply, triode output is connected on the pipeline by power power-supply TPS62110 for the base stage of termination 2SA966 triode, triode, and the ground wire of power power-supply TPS62110 connects reference electrode ground connection; The TMS termination jtag interface of single-chip microcomputer MSP430F149, P
28 toggle switch of [0..7] termination; The UTXD1 of single-chip microcomputer MSP430F149, URXD1 connect SCIRXDA, the SCITXDA end of dsp processor TMS320F2812 respectively; The P of single-chip microcomputer MSP430F149
5.7, P
6[0..7], P
4[0..7] meets WR, the DA[0..7 of data fifo exchanger IDT72V85 respectively], DB[0..7] end, the RD of data exchange unit IDT72V85, QA[0..7], QB[0..7] end meets XRD, the XD[0..7 of dsp processor TMS320F2812 respectively], XD[8..15] end, the QA[0..7 of data exchange unit IDT72V85], QB[0..7] end meets the D[0..7 of storage CY711041V33 respectively], D[8..15] end, and the A[0..17 of storage CY711041V33], the WE end meets the XA[0..17 of dsp processor TMS320F2812 respectively], the XWE end; The TDI termination jtag interface of dsp processor TMS320F2812; The output of 12V storage battery produces 3.3VA analog power, 3.3VD digital power and motor power respectively through LM2574, LM2574 and TPS62110.
Charge amplifier is the amplifier that is made of operational amplifier as shown in Figure 5; The input end Q of operational amplifier TL081 connects by output terminal V
0Through capacitor C
fFeedback after, connect capacitor C
1After meet output terminal V
0Through resistance R
fFeedback, and through parallel resistor R
1, C
2Connect "-" input end of operational amplifier TL081; "+" input end of operational amplifier TL081 is through resistance R
2Ground connection.
Band-pass filter also is made of operational amplifier as shown in Figure 6; Input end Vi is through resistance R
7Be connected to resistance R
8And capacitor C
3"-" input end of the reverse feedback first operational amplifier LM358 in parallel, first operational amplifier "+" input end grounding, output is through resistance R
5Be connected to resistance R
6"-" input end of the degenerative second operational amplifier LM358, second operational amplifier "+" input end grounding; The second operational amplifier output terminal V
0Through resistance R
4Connect "-" input end of the 3rd operational amplifier LM358, the 3rd operational amplifier LM358 also has capacitor C
4From outputing to the reverse feedback of input, "+" input end grounding of the 3rd operational amplifier LM358, the 3rd operational amplifier LM358 exports through resistance R
3"-" input end to the first operational amplifier LM358.
Here:
Vibration transducer selects INV9818;
Programmable amplifier selects PGA202;
ADS8325 is selected in the A/D conversion;
Pulse signal generator is selected 2SA966 for use;
Data storage selects CY711041V33;
The data fifo exchanger selects IDT72V85;
Single-chip microcomputer selects low power consumption MSP430F149;
Dsp processor selects TMS320F2812;
Battery pack is selected N70ZMF-1-112V 75Ah storage battery for use;
R
1Be 2k Ω;
R
2Be 2k Ω;
R
3Be 7.5k Ω;
R
4Be 20k Ω;
R
5Be 10k Ω;
R
6Be 20k Ω;
R
7Be 15k Ω;
R
8Be 15k Ω;
R
fBe 100M Ω;
C
1Be 0.1uF;
C
2Be 20pF;
C
3Be 0.1uF;
C
4Be 0.1uF;
C
fBe 1nF.
Wherein:
Computer is selected for use and is ground the magnificent IPC610H of company industrial computer;
The signal condition module is selected the HMM-04 of the Shanghai dynamo-electric Co., Ltd of firm human relations for use;
Capture card adopts the PCI5105 of America NI company.
During concrete the installation, the pipeline anticorrosion coating strip off need be realized that the rigidity of vibration transducer and pipeline contacts.The power supply of acoustical vibration sensor is provided by the battery pack of special use, imbeds underground with the signal puocessing module.In order to make the sensor medium-term and long-term work of rugged environment in the open air, the system in package shell has adopted the marine glue of good airproof performance.Compare with traditional acoustical vibration pipeline early warning sensor, owing to saved the antenna part of communication usefulness, can continue the longer time working life of battery.
This acoustical vibration sensor monitors scope can reach 1Km.The incident of any touching pipeline can both be by system identification.After oscillating signal was received by sensor, signal processing unit was handled this signal, judges whether it is the incident that once pipeline is had threat.In case the incident that once pipeline is had threat that produced is thought by system, provide a signal, the sensitizing pulse signal generator applies an electromagnetic signal that comprises the pulse in time that incident takes place, place, equiva lent impedance situation of change according to pipeline and loop that the earth constitutes, the waveform situation of monitoring receiving terminal, compare analysis according to situation of change, thereby report to the police and locate.
This example is through test of many times, and proving can non-relay monitoring in 10 kilometers scope, and the mode of propagating based on pipeline medium can realize the real-time location and the warning of intrusion event.Shovel soil all can be measured in the 5m scope around pipeline, and Location accuracy has the high advantage of acoustical vibration sensor Location accuracy about 1m simultaneously.
Claims (5)
1. acoustical vibration and the compound pipeline safety early warning system of electromagnetism phase of wave, it is made up of numerous acoustical vibration sensor monitor terminals (1), receiver (3); Press certain distance and go up installation numerous acoustical vibration sensor monitor terminals (1) at pipeline (2) at interval, gather the signal that all acoustical vibration monitor terminals (1) send by receiver (3); The distance of each acoustical vibration sensor monitor terminal (1) at 1Km between the 10Km; By different impulse coding mode or the signal frequencies of the corresponding emission of different acoustical vibration sensor monitor terminals (1), the location of realizing corresponding vibration detection device; It is characterized in that acoustical vibration sensor monitor terminal (1) is made up of sensor, signal conditioning circuit, single-chip microcomputer, pulse signal generator, data storage, DSP digital signal processor (DSP), tag memory, jtag interface and power module; The output of sensor is connected with the input of signal conditioning circuit, and the output of signal conditioning circuit connects the input of single-chip microcomputer, and single-chip microcomputer has output to connect pulse signal generator, between pulse signal generator discharge conection road and the ground; Single-chip microcomputer also has output to connect the input of DSP digital signal processor (DSP) behind data storage, DSP digital signal processor (DSP) have be used for writing with online modification single-chip microcomputer and (DSP) system in program jtag interface and have interface to be connected with tag memory; Whole system is by the battery module power supply that has charging inlet;
When extraneous incident was touched tube wall, highly sensitive acoustical vibration sensor was experienced oscillating signal, and sent single-chip microcomputer to carry out preliminary treatment through signal conditioning circuit this signal, found that abnormal signal then activates DSP digital signal processor and carries out further analysing and processing; DSP digital signal processor (DSP) is in case after thinking that this incident is the incident that once pipeline is worked the mischief, give the pulse signal generator that pipeline and the earth is constituted the loop, the pulse that the notice pulse signal generator produces certain frequency and coded system by signal of drive circuit output; Different impulse coding mode or the signal frequencies of the corresponding emission of different acoustical vibration sensor monitor terminals (1); Different location of realizing corresponding vibration detection device by this coded system and frequency.
2. a kind of acoustical vibration according to claim 1 and the compound pipeline safety early warning system of electromagnetism phase of wave, it is characterized in that the electric principle of acoustical vibration sensor monitor terminal (1) is: the output terminal Q of INV9818 sensor meets the Q end of charge amplifier, the V of charge amplifier
0The input end of end, the gain control end of charge amplifier meets the (P of single-chip microcomputer MSP430F149
1.1, P
1.2), the Vi end of output end vo ut tape splicing bandpass filter, the Vo termination has the A//D conversion ADS8325 of voltage reference REF3325, and CS, the Dclk end of A/D conversion ADS8325 meets the (P of single-chip microcomputer MSP430F149 respectively
1.3, UCLKO) end, the Dout of A/D conversion ADS8325 connects the SOMIO end by the SPI interface; (the P of single-chip microcomputer MSP430F149
1.3) base stage of termination 2SA966 triode, for the 6V power supply, triode output is connected on the pipeline triode by power power-supply TPS62110, and the ground wire of power power-supply TPS62110 connects reference electrode ground connection; The TMS termination jtag interface of single-chip microcomputer MSP430F149, (P
2[0..7]) 8 toggle switch of termination; UTXD1, the URXD1 of single-chip microcomputer MSP430F149 connects SCIRXDA, the SCITXDA end of (DSP) processor TMS320F2812 respectively; (the P of single-chip microcomputer MSP430F149
5.7, P
6[0..7], P
4[0..7]) meet (WR of (FIFO) data exchange unit IDT72V85 respectively, DA[0..7], DB[0..7]) end, (the RD of data exchange unit IDT72V85, QA[0..7], QB[0..7]) end meets the (XRD of (DSP) processor TMS320F2812 respectively, XD[0..7], XD[8..15]) end, data exchange unit IDT72V85 (QA[0..7], QB[0..7]) end connect respectively storage CY711041V33 (D[0..7], D[8..15]) end, and storage CY711041V33 (A[0..17], WE) end connect respectively (DSP) processor TMS320F2812 (XA[0..17], XWE) end; (DSP) the TDI termination jtag interface of processor TMS320F2812; The output of 12V storage battery produces 3.3VA analog power, 3.3VD digital power and motor power respectively through LM2574, LM2574 and TPS62110.
3. a kind of acoustical vibration according to claim 2 and the compound pipeline safety early warning system of electromagnetism phase of wave is characterized in that described charge amplifier is to be made of operational amplifier; The input end Q of operational amplifier TL081 connects by output terminal V
0Through electric capacity (C
f) feedback after, meet electric capacity (C
1) after meet output terminal V
0Through resistance (R
f) feedback, and through parallel resistor (R
1, C
2) connect "-" input end of operational amplifier TL081; "+" input end of operational amplifier TL081 is through resistance (R
2) ground connection.
4. a kind of acoustical vibration according to claim 2 and the compound pipeline safety early warning system of electromagnetism phase of wave is characterized in that described band-pass filter is made of operational amplifier; Input end Vi is through resistance (R
7) be connected to resistance (R
8) and electric capacity (C
3) "-" input end of the reverse feedback first operational amplifier LM358 in parallel, first operational amplifier "+" input end grounding, output is through resistance (R
5) be connected to resistance (R
6) "-" input end of the degenerative second operational amplifier LM358, second operational amplifier "+" input end grounding; Second operational amplifier output terminal (the V
0) through resistance (R
4) connecing "-" input end of the 3rd operational amplifier LM358, the 3rd operational amplifier LM358 has electric capacity (C
4) from outputing to the reverse feedback of input, "+" input end grounding of the 3rd operational amplifier LM358, the 3rd operational amplifier LM358 exports through resistance (R
3) to "-" input end of the first operational amplifier LM358.
5. a kind of acoustical vibration according to claim 1 and the compound pipeline safety early warning system of electromagnetism phase of wave is characterized in that described receiver (3) is made of computer and signal condition module; There is input to connect output from the signal condition module of reference ground electrode and pipeline (2) through gathering the inlet opening of clamping computer;
Waveform signal with the different coding mode in the receiver (3) carries out the information that demodulation is converted into a corresponding corresponding acoustical vibration sensor monitor terminal (1) transmission.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201229215U CN201326909Y (en) | 2008-09-27 | 2008-09-27 | Pipeline safety early warning system of combining sound vibration and electromagnetic wave |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201229215U CN201326909Y (en) | 2008-09-27 | 2008-09-27 | Pipeline safety early warning system of combining sound vibration and electromagnetic wave |
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| Publication Number | Publication Date |
|---|---|
| CN201326909Y true CN201326909Y (en) | 2009-10-14 |
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ID=41178881
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886742A (en) * | 2010-06-17 | 2010-11-17 | 北京工业大学 | Leakage and pipe explosion early warning system for city water supply network |
| CN103162093A (en) * | 2013-03-27 | 2013-06-19 | 东北大学 | Device and method for data acquisition of oil pipeline flux leakage detector |
| CN104569153A (en) * | 2014-12-31 | 2015-04-29 | 天津大学 | Ship pool experiment system based on PCCP failure early-warning and monitoring signals |
| CN109344195A (en) * | 2018-10-25 | 2019-02-15 | 电子科技大学 | Pipe safety event recognition and Knowledge Discovery Method based on HMM model |
| CN111911817A (en) * | 2020-06-28 | 2020-11-10 | 吉林省百瑞生科技发展有限公司 | On-line monitoring method and device for leakage of buried pipe network |
| CN116232261A (en) * | 2022-12-23 | 2023-06-06 | 北京华控智加科技有限公司 | Weak sound vibration signal front-end amplifying circuit design system |
-
2008
- 2008-09-27 CN CNU2008201229215U patent/CN201326909Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886742A (en) * | 2010-06-17 | 2010-11-17 | 北京工业大学 | Leakage and pipe explosion early warning system for city water supply network |
| CN103162093A (en) * | 2013-03-27 | 2013-06-19 | 东北大学 | Device and method for data acquisition of oil pipeline flux leakage detector |
| CN104569153A (en) * | 2014-12-31 | 2015-04-29 | 天津大学 | Ship pool experiment system based on PCCP failure early-warning and monitoring signals |
| CN109344195A (en) * | 2018-10-25 | 2019-02-15 | 电子科技大学 | Pipe safety event recognition and Knowledge Discovery Method based on HMM model |
| CN109344195B (en) * | 2018-10-25 | 2021-09-21 | 电子科技大学 | HMM model-based pipeline security event recognition and knowledge mining method |
| CN111911817A (en) * | 2020-06-28 | 2020-11-10 | 吉林省百瑞生科技发展有限公司 | On-line monitoring method and device for leakage of buried pipe network |
| CN111911817B (en) * | 2020-06-28 | 2021-07-09 | 吉林省百瑞生科技发展有限公司 | On-line monitoring method and device for leakage of buried pipe network |
| CN116232261A (en) * | 2022-12-23 | 2023-06-06 | 北京华控智加科技有限公司 | Weak sound vibration signal front-end amplifying circuit design system |
| CN116232261B (en) * | 2022-12-23 | 2023-11-10 | 北京华控智加科技有限公司 | Weak sound vibration signal front-end amplifying circuit design system |
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