CN205746047U - A kind of long-distance oil & gas pipeline safety monitoring system - Google Patents

A kind of long-distance oil & gas pipeline safety monitoring system Download PDF

Info

Publication number
CN205746047U
CN205746047U CN201620611681.XU CN201620611681U CN205746047U CN 205746047 U CN205746047 U CN 205746047U CN 201620611681 U CN201620611681 U CN 201620611681U CN 205746047 U CN205746047 U CN 205746047U
Authority
CN
China
Prior art keywords
long
monitoring system
gas pipeline
oil
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201620611681.XU
Other languages
Chinese (zh)
Inventor
李林
兰才富
张彬
胡博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201620611681.XU priority Critical patent/CN205746047U/en
Application granted granted Critical
Publication of CN205746047U publication Critical patent/CN205746047U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

This utility model relates generally to a kind of monitoring system, more particularly, to a kind of long-distance oil & gas pipeline safety monitoring system.Long-distance oil & gas pipeline safety monitoring system includes intelligent controller, alarm module, communication module, monitor terminal, power module, sensor, signal processing module, Guang Nayi, sensing optic cable, communications optical cable, sensing optic cable is positioned on the outer wall of oil and gas pipes, communications optical cable is connected to sensor, Guang Nayi, the outfan of sensor is connected to the input of signal processing module, signal processing module, Guang Nayi are connected to intelligent controller, the outfan of power module is connected to the input of intelligent controller, and monitor terminal is attached by communication module.It uses distributed fiberoptic sensor to combine light and receives instrument PPP BOTDA and realize the real-time monitoring to long-distance oil & gas pipeline, can obtain in real time oil and gas pipes temperature along the line, strain, the status information such as vibration, and the damage that can run into oil and gas pipes carries out early warning in advance and is accurately positioned.

Description

A kind of long-distance oil & gas pipeline safety monitoring system
Technical field
This utility model relates generally to a kind of monitoring system, more particularly, it relates to a kind of long-distance oil & gas pipeline is supervised safely Examining system.
Background technology
At present, the demand to the energy particularly petroleum resources that grows continuously and fast of Chinese national economy is more and more urgent. The many advantages that pipeline possesses due to self, it has also become main petroleum resources transportation means.But due to all natural or artificial Reason, pipe leakage accident happens occasionally, sometimes along with huge life and property loss and environmental pollution.At present, conventional Oil-gas pipeline safety monitoring device mainly by the isoparametric change of pipeline discharge pressure, flow and temperature judge leakage Whether occur.Such method is easily affected by factors such as pumped (conveying) medium characteristic, techniques, and reports to the police all after leaking.Cause This, how allowing long-distance oil & gas pipeline monitoring system have monitoring and warning function is the most significant research direction.
Utility model content
This utility model is mainly solving the technical problems that provide a kind of long-distance oil & gas pipeline safety monitoring system, and it uses Distributed fiberoptic sensor combines light and receives instrument PPP-BOTDA and realize the real-time monitoring to long-distance oil & gas pipeline, can obtain oil in real time Feed channel temperature along the line, strain, the status information such as vibration, and the damage that oil and gas pipes can be run into carry out early warning in advance and It is accurately positioned.
For solving above-mentioned technical problem, this utility model one long-distance oil & gas pipeline safety monitoring system includes Based Intelligent Control Device, alarm module, communication module, monitor terminal, power module, sensor, signal processing module, Guang Nayi, sensing optic cable, logical Letter optical cable, it uses distributed fiberoptic sensor to combine light and receives instrument PPP-BOTDA and realize the real-time monitoring to long-distance oil & gas pipeline, Can obtain in real time oil and gas pipes temperature along the line, strain, the status information such as vibration, and the damage that can run into oil and gas pipes enters Act front early warning and be accurately positioned.
Wherein, described sensing optic cable is positioned on the outer wall of oil and gas pipes;Described sensing optic cable is connected to communications optical cable;Described Communications optical cable is connected to sensor;Described communications optical cable is connected to Guang Nayi;The outfan of described sensor is connected at signal The input of reason module;The outfan of described signal processing module is connected to the input of intelligent controller;Described power module Outfan be connected to the input of intelligent controller;Described communication module is connected to intelligent controller;Described monitor terminal leads to Cross communication module to be attached.
As further optimization of the present utility model, described in this utility model one long-distance oil & gas pipeline safety monitoring system Intelligent controller is computer.
As further optimization of the present utility model, described in this utility model one long-distance oil & gas pipeline safety monitoring system It is Brillouin optical time domain analysis instrument PPP-BOTDA that light receives instrument.
As further optimization of the present utility model, described in this utility model one long-distance oil & gas pipeline safety monitoring system Sensor includes distributed fiberoptic sensor.
As further optimization of the present utility model, described in this utility model one long-distance oil & gas pipeline safety monitoring system Power module can use wind and solar hybrid generating system.
As further optimization of the present utility model, described in this utility model one long-distance oil & gas pipeline safety monitoring system Distributed sensor constitutes DAS system with signal processing module.
Control effect: this utility model one long-distance oil & gas pipeline safety monitoring system, it uses distributing optical fiber sensing Device combines light and receives instrument PPP-BOTDA and realize the real-time monitoring to long-distance oil & gas pipeline, can obtain the temperature that oil and gas pipes is along the line in real time Spend, strain, the status information such as vibration, and the damage that can run into oil and gas pipes carries out early warning in advance and is accurately positioned.
Accompanying drawing explanation
The utility model is described in more detail with specific implementation method below in conjunction with the accompanying drawings.
Fig. 1 is the hardware structure diagram of this utility model a kind of long-distance oil & gas pipeline safety monitoring system.
Fig. 2 is the DAS measuring principle figure of this utility model a kind of long-distance oil & gas pipeline safety monitoring system.
Fig. 3 is the BOTDA measuring principle figure of this utility model a kind of long-distance oil & gas pipeline safety monitoring system.
Fig. 4 is the alarm module circuitry schematic diagram of this utility model a kind of long-distance oil & gas pipeline safety monitoring system.
Detailed description of the invention
Detailed description of the invention one:
In conjunction with Fig. 1,2,3,4, present embodiment is described, one long-distance oil & gas pipeline safety monitoring system described in present embodiment System includes intelligent controller, alarm module, communication module, monitor terminal, power module, sensor, signal processing module, Guang Na Instrument, sensing optic cable, communications optical cable, it uses distributed fiberoptic sensor to combine PPP-BOTDA light and receives instrument realization to long oil transportation gas The real-time monitoring of pipeline, can obtain in real time oil and gas pipes temperature along the line, strain, the status information such as vibration, and to oil and gas pipes The damage that can run into carries out early warning in advance and is accurately positioned.
Wherein, described sensing optic cable is positioned on the outer wall of oil and gas pipes, sensing optic cable for detect oil and gas pipes temperature, Strain, strain, the status information such as vibrations.
Described sensing optic cable is connected to communications optical cable, and communications optical cable is for transmitting the transducing signal of sensing optic cable.
Described communications optical cable is connected to sensor, and communications optical cable is for sending transducing signal to sensor.
Described communications optical cable is connected to Guang Nayi, receives instrument by light and can obtain distributed strain and the temperature of oil and gas pipes Measure.
The outfan of described sensor is connected to the input of signal processing module, and sensor is for detecting oil and gas pipes Multi-signal, and send the transducing signal detected to signal processing module.
The outfan of described signal processing module is connected to the input of intelligent controller, and signal processing module will be for passing Sense signal is amplified, filters, conversion process, and the signal after processing sends intelligent controller to.
Described light is received instrument and is connected to intelligent controller, and light receives instrument for sending the measurement signal of acquisition to Based Intelligent Control Device.
The outfan of described power module is connected to the input of intelligent controller, and power module is for intelligent controller There is provided electric energy, it is ensured that the normal work of system.
Described communication module is connected to intelligent controller, and communication module is for realizing the remote of intelligent controller and monitor terminal Cheng Tongxin.
Described monitor terminal is attached by communication module, for receiving the information that intelligent controller sends, it is simple to real Time monitoring oil and gas pipes every terms of information, the safety of oil and gas pipes is monitored.
Detailed description of the invention two:
In conjunction with Fig. 1,2,3,4, present embodiment being described, described intelligent controller is computer.Computer receives sensor pair Every detection signal of oil and gas pipes is analyzed calculating etc. and processes, by communication module remote transmission to monitor terminal.
Detailed description of the invention three:
In conjunction with Fig. 1,2,3,4, present embodiment being described, it is Brillouin optical time domain analysis instrument PPP-BOTDA that described light receives instrument. The ultimate principle of BOTDA is: injects short light pulse and continuous probe light respectively from the two ends of optical fiber, is excited by measuring in optical fiber The frequency change of Brillouin scattering, just can obtain the strain information of the axial each point of optical fiber.For obtaining higher spatial resolution, Common means are to reduce pulsed light width, but, owing to exciting of phonon needs 28ns, chopped pulse optical width can be led simultaneously Cause brillouin gain weakens the deterioration with spectrum morphology.New PPP-BOTDA technology, by changing the form of pump light, Before the pulsed light measured sends, increase by one section of pre-pumping pulse ripple and excite phonon.Profit in this way, can obtain simultaneously 10cm spatial resolution and ± 0.0025% strain measurement precision.
Detailed description of the invention four:
In conjunction with Fig. 1,2,3,4, present embodiment being described, described sensor is distributed fiberoptic sensor.Based on coherent rayleigh The distributed fiberoptic sensor of scattering, utilizes the optical fiber characteristic to vibration sensing, when extraneous vibration acts on sensor fibre, Due to elasto-optical effect, the refractive index of optical fiber.Length will produce minor variations, thus in causing optical fiber, the phase place of transmission signal becomes Change so that light intensity changes.The positional information of vibration signal can be obtained.
Detailed description of the invention five:
In conjunction with Fig. 1,2,3,4, present embodiment being described, described power module can use wind and solar hybrid generating system.Due to Long-distance oil & gas pipeline is likely distributed in the place that comparison is remote, can to provide for monitoring system by wind and solar hybrid generating system Electric energy, utilizes geographical conditions to make full use of solar energy and wind energy, it is ensured that energy supply.
Detailed description of the invention six:
Illustrate that present embodiment, described sensor constitute DAS system with signal processing module in conjunction with Fig. 1,2,3,4.DAS system System generally uses the light-pulse generator that height is relevant, can interfere, when the external world shakes in pulse width regions between Rayleigh scattering signal Moving can make the coherent rayleigh scattered signal intensity of this point change, before and after being vibrated by detection when causing phase place to change The Strength Changes (differential signal) of Rayleigh scattering optical signal, the detection of vibration event can be realized, and be accurately positioned.With Mach-Zehnder, Sagnac interferometer is compared, and DAS system only needs a core single-mode fiber, maximum distance of measuring up to 50 kilometers, Within positioning precision ± 20 meter, and multiple affair can be realized detect simultaneously and position.Owing to long-distance oil & gas pipeline is likely distributed in The most remote place, can to provide electric energy for monitoring system by wind and solar hybrid generating system, utilize geographical conditions abundant Utilize solar energy and wind energy, it is ensured that energy supply.
The operation principle of this utility model a kind of long-distance oil & gas pipeline safety monitoring system is: this utility model one length is defeated Oil-gas pipeline safety monitoring system uses distributed fiberoptic sensor, can obtain oil gas in real time according to sensor data acquisition system Pipeline temperature along the line, strain, the status information such as vibration, by carrying out score with the historical data that stores in intelligent controller Analysis and feature signal extraction and Intelligent Recognition, realize Pipeline Third-party Interference, pipe leakage, pipe sedimentation deformation and geology Disasters etc. carry out early warning in advance, and when abnormal signal being detected, intelligent controller controls alarm module and carries out audio alert prompting, Wherein alarm module uses Single-chip Controlling to drive, and suggestion content includes predicting time that event occurs in advance, place, event become Gesture etc..Owing to long-distance oil & gas pipeline transmission range is long, so sending multiple intelligent controllers to prison by communication system Control terminal realizes the total security monitoring to long-distance oil & gas pipeline.
Although this utility model is open as above with preferred embodiment, but it is not limited to this utility model, appoints What person skilled in the art, without departing from spirit and scope of the present utility model, can do various change and modification, therefore Protection domain of the present utility model should be with being as the criterion that claims are defined.

Claims (6)

1. a long-distance oil & gas pipeline safety monitoring system, it is characterised in that described long-distance oil & gas pipeline safety monitoring system bag Include intelligent controller, alarm module, communication module, monitor terminal, power module, sensor, signal processing module, Guang Nayi, Sensing optic cable, communications optical cable, described sensing optic cable is positioned on the outer wall of oil and gas pipes;Described sensing optic cable is connected to Communication ray Cable;Described communications optical cable is connected to distributed sensor;Described communications optical cable is connected to Guang Nayi;The outfan of described sensor It is connected to the input of signal processing module;The outfan of described signal processing module is connected to the input of intelligent controller; Described light is received instrument and is connected to intelligent controller;The outfan of described power module is connected to the input of intelligent controller;Described Communication module is connected to intelligent controller;Described monitor terminal is attached by communication module.
A kind of long-distance oil & gas pipeline safety monitoring system the most according to claim 1, it is characterised in that: described Based Intelligent Control Device is computer.
A kind of long-distance oil & gas pipeline safety monitoring system the most according to claim 1, it is characterised in that: described light is received instrument and is Brillouin optical time domain analysis instrument PPP-BOTDA.
A kind of long-distance oil & gas pipeline safety monitoring system the most according to claim 1, it is characterised in that: described sensor is Distributed fiberoptic sensor.
A kind of long-distance oil & gas pipeline safety monitoring system the most according to claim 1, it is characterised in that: described power module Wind and solar hybrid generating system can be used.
A kind of long-distance oil & gas pipeline safety monitoring system the most according to claim 1, it is characterised in that: described distributed biography Sensor constitutes DAS system with signal processing module.
CN201620611681.XU 2016-06-20 2016-06-20 A kind of long-distance oil & gas pipeline safety monitoring system Expired - Fee Related CN205746047U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620611681.XU CN205746047U (en) 2016-06-20 2016-06-20 A kind of long-distance oil & gas pipeline safety monitoring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620611681.XU CN205746047U (en) 2016-06-20 2016-06-20 A kind of long-distance oil & gas pipeline safety monitoring system

Publications (1)

Publication Number Publication Date
CN205746047U true CN205746047U (en) 2016-11-30

Family

ID=57383129

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620611681.XU Expired - Fee Related CN205746047U (en) 2016-06-20 2016-06-20 A kind of long-distance oil & gas pipeline safety monitoring system

Country Status (1)

Country Link
CN (1) CN205746047U (en)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107120533A (en) * 2017-06-06 2017-09-01 北京市燃气集团有限责任公司 The intelligent pressure control method of the city gas pipeline operation under pressure positioned based on the Big Dipper
CN107727226A (en) * 2017-08-31 2018-02-23 电子科技大学 The oil-gas pipeline safety detection method perceived based on optical fiber
CN108253303A (en) * 2018-01-16 2018-07-06 东莞新奥燃气有限公司 A kind of monitoring of natural gas line and method for early warning and system
CN108343844A (en) * 2017-01-24 2018-07-31 中国石油化工股份有限公司 A kind of Multi-parameter modularized oil-gas pipeline safety monitoring system and method
CN108591839A (en) * 2018-06-15 2018-09-28 钦州学院 A kind of skyscraper natural gas standpipe security protection early warning system and method for early warning
CN109729179A (en) * 2019-03-14 2019-05-07 广东聚源管业实业有限公司 A kind of pipeline conditions monitoring method and system
CN109936636A (en) * 2019-03-14 2019-06-25 广东聚源管业实业有限公司 A kind of pipeline intrusion detection method and system
CN110131486A (en) * 2019-04-17 2019-08-16 北京百世通管道科技有限公司 Optical fiber compound pipeline complex pipeline and its monitoring system and method for early warning
CN110715175A (en) * 2019-10-25 2020-01-21 兰州交通大学 A intelligent monitoring oil and gas pipeline for frozen soil district
CN110715613A (en) * 2019-09-29 2020-01-21 广东聚源管业实业有限公司 Underground pipeline surging monitoring system based on Brillouin scattering
CN110715609A (en) * 2019-09-27 2020-01-21 广东聚源管业实业有限公司 Method and system for monitoring airflow surging state in pipeline based on Brillouin scattering
CN110912605A (en) * 2019-11-11 2020-03-24 中国人民解放军海军工程大学 Safety monitoring and early warning device and method for optical cable or photoelectric composite cable
CN111929001A (en) * 2020-08-15 2020-11-13 廊坊开发区中油新星电信工程有限公司 Optical cable pipeline safety early warning system
US10975687B2 (en) 2017-03-31 2021-04-13 Bp Exploration Operating Company Limited Well and overburden monitoring using distributed acoustic sensors
US11053791B2 (en) 2016-04-07 2021-07-06 Bp Exploration Operating Company Limited Detecting downhole sand ingress locations
US11098576B2 (en) 2019-10-17 2021-08-24 Lytt Limited Inflow detection using DTS features
US11162353B2 (en) 2019-11-15 2021-11-02 Lytt Limited Systems and methods for draw down improvements across wellbores
US11199085B2 (en) 2017-08-23 2021-12-14 Bp Exploration Operating Company Limited Detecting downhole sand ingress locations
US11199084B2 (en) 2016-04-07 2021-12-14 Bp Exploration Operating Company Limited Detecting downhole events using acoustic frequency domain features
US11333636B2 (en) 2017-10-11 2022-05-17 Bp Exploration Operating Company Limited Detecting events using acoustic frequency domain features
US11466563B2 (en) 2020-06-11 2022-10-11 Lytt Limited Systems and methods for subterranean fluid flow characterization
US11473424B2 (en) 2019-10-17 2022-10-18 Lytt Limited Fluid inflow characterization using hybrid DAS/DTS measurements
CN115479219A (en) * 2022-09-20 2022-12-16 无锡科晟光子科技有限公司 Intelligent pipeline state monitoring method and device and intelligent pipeline system
US11593683B2 (en) 2020-06-18 2023-02-28 Lytt Limited Event model training using in situ data
US11643923B2 (en) 2018-12-13 2023-05-09 Bp Exploration Operating Company Limited Distributed acoustic sensing autocalibration
US11859488B2 (en) 2018-11-29 2024-01-02 Bp Exploration Operating Company Limited DAS data processing to identify fluid inflow locations and fluid type

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11530606B2 (en) 2016-04-07 2022-12-20 Bp Exploration Operating Company Limited Detecting downhole sand ingress locations
US11215049B2 (en) 2016-04-07 2022-01-04 Bp Exploration Operating Company Limited Detecting downhole events using acoustic frequency domain features
US11199084B2 (en) 2016-04-07 2021-12-14 Bp Exploration Operating Company Limited Detecting downhole events using acoustic frequency domain features
US11053791B2 (en) 2016-04-07 2021-07-06 Bp Exploration Operating Company Limited Detecting downhole sand ingress locations
CN108343844A (en) * 2017-01-24 2018-07-31 中国石油化工股份有限公司 A kind of Multi-parameter modularized oil-gas pipeline safety monitoring system and method
US10975687B2 (en) 2017-03-31 2021-04-13 Bp Exploration Operating Company Limited Well and overburden monitoring using distributed acoustic sensors
CN107120533B (en) * 2017-06-06 2018-05-22 北京市燃气集团有限责任公司 The intelligent pressure control method of city gas pipeline operation under pressure based on Big Dipper positioning
CN107120533A (en) * 2017-06-06 2017-09-01 北京市燃气集团有限责任公司 The intelligent pressure control method of the city gas pipeline operation under pressure positioned based on the Big Dipper
US11199085B2 (en) 2017-08-23 2021-12-14 Bp Exploration Operating Company Limited Detecting downhole sand ingress locations
CN107727226A (en) * 2017-08-31 2018-02-23 电子科技大学 The oil-gas pipeline safety detection method perceived based on optical fiber
US11333636B2 (en) 2017-10-11 2022-05-17 Bp Exploration Operating Company Limited Detecting events using acoustic frequency domain features
CN108253303A (en) * 2018-01-16 2018-07-06 东莞新奥燃气有限公司 A kind of monitoring of natural gas line and method for early warning and system
CN108591839A (en) * 2018-06-15 2018-09-28 钦州学院 A kind of skyscraper natural gas standpipe security protection early warning system and method for early warning
US11859488B2 (en) 2018-11-29 2024-01-02 Bp Exploration Operating Company Limited DAS data processing to identify fluid inflow locations and fluid type
US11643923B2 (en) 2018-12-13 2023-05-09 Bp Exploration Operating Company Limited Distributed acoustic sensing autocalibration
CN109729179A (en) * 2019-03-14 2019-05-07 广东聚源管业实业有限公司 A kind of pipeline conditions monitoring method and system
CN109936636A (en) * 2019-03-14 2019-06-25 广东聚源管业实业有限公司 A kind of pipeline intrusion detection method and system
CN110131486A (en) * 2019-04-17 2019-08-16 北京百世通管道科技有限公司 Optical fiber compound pipeline complex pipeline and its monitoring system and method for early warning
CN110715609B (en) * 2019-09-27 2021-01-01 广东聚源管业实业有限公司 Method and system for monitoring airflow surging state in pipeline based on Brillouin scattering
CN110715609A (en) * 2019-09-27 2020-01-21 广东聚源管业实业有限公司 Method and system for monitoring airflow surging state in pipeline based on Brillouin scattering
CN110715613A (en) * 2019-09-29 2020-01-21 广东聚源管业实业有限公司 Underground pipeline surging monitoring system based on Brillouin scattering
CN110715613B (en) * 2019-09-29 2021-02-02 广东聚源管业实业有限公司 Underground pipeline surging monitoring system based on Brillouin scattering
US11473424B2 (en) 2019-10-17 2022-10-18 Lytt Limited Fluid inflow characterization using hybrid DAS/DTS measurements
US11098576B2 (en) 2019-10-17 2021-08-24 Lytt Limited Inflow detection using DTS features
CN110715175A (en) * 2019-10-25 2020-01-21 兰州交通大学 A intelligent monitoring oil and gas pipeline for frozen soil district
CN110912605B (en) * 2019-11-11 2022-01-25 中国人民解放军海军工程大学 Safety monitoring and early warning device and method for optical cable or photoelectric composite cable
CN110912605A (en) * 2019-11-11 2020-03-24 中国人民解放军海军工程大学 Safety monitoring and early warning device and method for optical cable or photoelectric composite cable
US11162353B2 (en) 2019-11-15 2021-11-02 Lytt Limited Systems and methods for draw down improvements across wellbores
US11466563B2 (en) 2020-06-11 2022-10-11 Lytt Limited Systems and methods for subterranean fluid flow characterization
US11593683B2 (en) 2020-06-18 2023-02-28 Lytt Limited Event model training using in situ data
CN111929001B (en) * 2020-08-15 2022-07-08 廊坊开发区中油新星电信工程有限公司 Optical cable pipeline safety early warning system
CN111929001A (en) * 2020-08-15 2020-11-13 廊坊开发区中油新星电信工程有限公司 Optical cable pipeline safety early warning system
CN115479219A (en) * 2022-09-20 2022-12-16 无锡科晟光子科技有限公司 Intelligent pipeline state monitoring method and device and intelligent pipeline system
CN115479219B (en) * 2022-09-20 2024-03-01 无锡科晟光子科技有限公司 Intelligent pipeline state monitoring method, monitoring device and intelligent pipeline system

Similar Documents

Publication Publication Date Title
CN205746047U (en) A kind of long-distance oil & gas pipeline safety monitoring system
CN101303788B (en) Perimeter alarming method and system for implementing orientation of composite type complete optical fiber
CN101266024B (en) Distributed optical fibre oil gas conveying pipeline early early-warning system based on polarization detection
CN103134432A (en) Bridge displacement monitoring system based on optical fiber sensors
CN201191221Y (en) Disturbance signal determination module of distributed optical fiber vibration sensor system
CN209325429U (en) A kind of oil-gas pipeline leakage positioning system based on optical fiber
CN102900955A (en) Pipeline leakage on-line monitoring device and method based on f fiber temperature detection
CN102635786A (en) Online real-time monitoring system for an embedded delivery pipeline
CN104454007A (en) Mine safety early warning system based on multi-fiber-core optical fibers
CN202532190U (en) On-line real-time monitoring system of embedded conveying pipeline
CN208400590U (en) A kind of electric power safety sensing optic cable
CN101299635B (en) Apparatus and method for discriminating front and back of wide field complete-optical fiber disturbing signal
CN207246799U (en) A kind of pipe leakage fibre-optical temperature sensing monitor
CN107389179A (en) A kind of mine conveyer carrying roller malfunction monitoring positioning and warning device
CN114842603A (en) High tension cable prevents outer broken monitoring and early warning system
CN102852556A (en) Safety pre-warning system of mining equipment
CN204331954U (en) A kind of precise positioning type optical fiber induction pre-alarm system
CN204680159U (en) Optical fiber distributed type reservoir dam monitoring system
CN102647447A (en) Online real-time monitoring system of novel pre-buried pipeline
CN207081479U (en) A kind of mine conveyer carrying roller malfunction monitoring positioning and warning device
CN103498790B (en) Based on group of pump state monitoring method and the device of optical fiber grating sensing
CN202600875U (en) Defence-area optical fiber perimeter protection pre-warning system
CN210667129U (en) Intelligent access control management system based on distributed optical fiber temperature measurement and grating sensing system
CN104236750A (en) Oil-gas pipeline safety monitoring system and method and distributed remote monitoring system
CN105114815A (en) Monitoring early-warning system for underground oil and gas pipeline

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20161130

Termination date: 20170620

CF01 Termination of patent right due to non-payment of annual fee