CN101566586A - External safety early-warning and positioning system of optical cable and optical-electrical compound cable - Google Patents
External safety early-warning and positioning system of optical cable and optical-electrical compound cable Download PDFInfo
- Publication number
- CN101566586A CN101566586A CNA2008100603963A CN200810060396A CN101566586A CN 101566586 A CN101566586 A CN 101566586A CN A2008100603963 A CNA2008100603963 A CN A2008100603963A CN 200810060396 A CN200810060396 A CN 200810060396A CN 101566586 A CN101566586 A CN 101566586A
- Authority
- CN
- China
- Prior art keywords
- optical
- cable
- warning
- positioning system
- software
- 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.)
- Granted
Links
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The invention discloses an external safety early-warning and positioning system of an optical cable and an optical-electrical compound cable, which mainly comprises an optical-fiber sensing optical system, a signal processing system and a system software, wherein the optical-fiber sensing optical system is a bidirectionallight path-sharing distributing optical-fiber interferometer; the signal processing system comprises a DFB semiconductor laser constant current drive circuit, a temperature control circuit, a PIN detector circuit and an AD switching and acquiring circuit; and the system software comprises a front-end acquiring and preprocessing software package, a wave analysis and feature extraction software package, a time delay judgment software package and a user interface. The external safety early-warning and positioning system of the optical cable and the optical-electrical compound cable can early warn a real-time safety warning and accurately positioning system of the communication optical cable before destroy events occur so that a communication maintenance unit can adopt corresponding precautionary measures before the events occur, thereby avoiding direct loss brought by the damage.
Description
Technical field
The invention belongs to photoelectron and areas of information technology, the external safety early-warning and the positioning system of particularly a kind of optical cable, optoelectronic composite cable.
Background technology
Optical cable and photoelectricity composite cable are a kind of information transmission mediums that present optical communication industry and power industry extensively adopt, and the operation security of optical cable and photoelectricity composite cable is related to the guarantee of the stable and national economic interest of society.Therefore early warning and the position monitor that the outside infringement incident in optical cable and the photoelectricity composite cable operation process is carried out real-time online is the key that guarantees its safe operation.
The infringement of traditional optical cable and photoelectricity composite cable detects the main optical time domain reflectometer (OTDR) that adopts and carries out, this technology can only be destroyed under the situation that produces the fracture of optical cable inner fiber just effective by the infringement incident at optical cable, can't realize the real-time online of infringement incident is detected, and can reduce along with the increase of cable length the bearing accuracy of breakpoint.Another monitoring method is the senser element that adopts fiber grating etc. to have the ess-strain sensitivity characteristic carries out safety detection to optical cable words, this method must add fiber bragg grating device in optical cable, thereby destroyed the transport property of optical cable itself, so these methods all can't realize online application on existing communications optical cable or photoelectricity composite cable.
Existing traditional optical cable on-line monitoring system all is to report to the police after incident takes place, and at this moment, the destruction that incident produces forms, and the effect of emergency mechanism can only be the recovery of communication; Steal if data take place, also do not have the technical capability can be in advance at present, or even report to the police afterwards.
Summary of the invention
The objective of the invention is to provide a kind of and can give warning in advance, accurately locate, use optical cable simple and applied widely, the external safety early-warning and the positioning system of photoelectricity composite cable for the deficiency that solves above-mentioned technology.
In order to achieve the above object, a kind of optical cable that the present invention is designed, the external safety early-warning of photoelectricity composite cable and positioning system, mainly comprise the Fibre Optical Sensor optical system, signal processing system and system software, wherein the Fibre Optical Sensor optical system is two-way light path distribution type fiber-optic interferometer altogether, signal processing system is a dfb semiconductor laser instrument constant-current drive circuit, temperature-control circuit, PIN detector circuit and AD conversion Acquisition Circuit, system software comprises front-end collection and pretreatment software bag, wavelet analysis and feature extraction software bag, time delay is judged software package and user interface.
In optical system, described two-way altogether light path distribution type fiber-optic interferometer adopts the optical fibre light splitting device of two identical polarization irrelevants and the sensing in communications optical cable or the photoelectricity composite cable to constitute etc. the interferometer of brachium jointly with single-mode fiber; The light that the dfb semiconductor laser instrument sends adopts the optical fibre light splitting device to be divided into aplanatic two-way through behind the optoisolator, and distributing is input to the two ends of interferometer through different Transmission Fibers.In order to make the additional phase error unanimity of two-way interference signal, after the light of positive and negative both direction enters the optical splitter that constitutes interferometer, must directly link to each other by straight-through arm.The two-way interference signal is got back to receiving end by different optical fiber, through the PIN detector light signal is converted to electric signal, obtain the interference signal of two-way waveform unanimity, convert digital signal to through AD then, enter system software and carry out pre-service, extract feature by wavelet analysis then, input neural network calculates, the identification incident.After event recognition is finished, according to event property, adopt time delay algorithm that the occurrence positions of incident is positioned, finally finish early warning and location to the infringement incident.
The present invention utilizes optical cable itself in communications optical cable or the photoelectricity composite cable as Sensitive Apparatus, in conjunction with two-way distribution type fiber-optic interferometer technique with the light path polarization irrelevant, and carries out external safety early-warning and location in conjunction with wavelet analysis and neural network algorithm.
A kind of optical cable that the present invention obtains, the external safety early-warning and the positioning system of photoelectricity composite cable in conjunction with dfb semiconductor laser instrument and two-way light path fiber optic interferometric know-why altogether, significantly improve the alerting signal signal to noise ratio (S/N ratio); Incident based on the Signal Pretreatment algorithm of many wavestrips time-frequency spectrum signature analysis is judged, can realize the accurate judgement to the intrusion incident of multiple different threat communication link and data security, can judge multiple goal and eventful; Design radial base neural net with transform domain spacing wave distance for excitation function, realize the real-time training and the self study of neural network; Carry out real-time positioning with small echo generalized correlation technology at different incidents based on auto-adaptive filtering technique, can realize eventful real-time positioning.
The external safety early-warning and the positioning system of the resulting a kind of optical cable of the present invention, photoelectricity composite cable, the actual time safety of communications optical cable is reported to the police and accurate positioning system can early warning before destructive insident generation prerequisite, make the communication unit of maintenance before incident takes place, just can take the corresponding precautionary measures, thereby can avoid destroying the direct loss of bringing, as the material of optical fiber maintenance and labour cost etc.; Avoid the indirect loss brought, as communicating interrupt reparations of optical fiber applying unit etc.; Avoid destroying the negative effect that brings to socio-economic development; Take measures in advance, avoid the stolen of data.
For fiber backbone network, long-distance optical fiber backbone network particularly, except incident is had shift to an earlier date corresponding, the promptness of the enforcement of the precautionary measures that incident is taken place and validity are with even more important, 100 meters bearing accuracies of the enforcement security alarm of communications optical cable and accurate positioning system provide sufficient technical guarantee for this reason, thereby the effect that can reach is: saved the investigation time that incident is taken precautions against, the precautionary measures that take place for incident provide time margin; Make the related personnel nearby time of arrival the scene, improved personnel's service efficiency; The detection of stealing incident for data from technological layer provides true foundation.
The external safety early-warning of optical cable provided by the invention, cable and positioning system, need not on existing fiber optic network, to do any construction, only need system of the present invention to be installed at the node two ends of communication optical fiber, can reach the design function of system, therefore, system of the present invention is not only applicable to terrestrial environment, is applicable to underwater environment yet, make it to use simple, suitable environment is wide.
Description of drawings
Fig. 1 is optical cable/cable external safety early-warning and positioning system overall architecture structural representation;
Fig. 2 processing unit frame construction synoptic diagram;
Fig. 3 host computer system frame construction synoptic diagram;
Fig. 4 is the external safety early-warning and the positioning system block diagram of optical cable and photoelectricity composite cable.
Wherein: (a) front end sensing unit (b) rear end sensing unit (c) host server and software systems (d) control modules (e) processing unit
Embodiment
In conjunction with the accompanying drawings the optical cable of the present invention design and photoelectricity composite cable external safety early-warning and positioning system are described further below by embodiment.
Embodiment:
Optical cable and the photoelectricity composite cable external safety early-warning and the positioning system of the present invention's design, total system makes up as Fig. 1, and system is controlled by mainframe program by operating personnel.Operating personnel are by the electronic chart of mainframe program interface start-up system and loading system institute infield.Operating personnel carry out the parameter setting at system environments and specific requirement after by the correlation technique training.Sensor begins real-time telecommunication optical fiber is monitored behind the program start, constantly sends laser signal as input stimulus to sensing unit, and the light signal that simultaneously reception is obtained transfers electric signal to and carries out filtering and amplification.Finishing signal after the above-mentioned processing will be converted into the very high digital signal of sampling rate by the high-speed AD acquisition plate and send control module to and carry out further signal analysis and processing.The neural network of control module trains before installing.By control module, system discerns to judge whether that event occurs the signal that collects in real time.Obtain its positional information and carry out early warning and warning to main frame if judge that event occurs then incident positioned by remote alarm interface.To feed back typical event information and deposit the typical data storehouse in by main frame after each event recognition success.Control module will utilize the information of typical data Ku Neixin that network is fed back the reinforcement training simultaneously.In case receive warning message from control module, display alarm information on the position of incident will take place at electronic chart in system automatically.Simultaneity factor can also be carried out the further affirmation of incident or drive relay starting emergent scheme as the first-class device of making a video recording according to the third-party auxiliary watch-dog of startup of operating personnel's configuration automatic or manual.The details of incident will deposit background data base in and pass through other platforms of network destined.After obtaining confirming, incident will feed back to control module in order to strengthen neural metwork training as typical event.
Wherein each unit module is introduced:
1) front end sensing unit 2211 and terminal sensing unit 2221:
As shown in Figure 1, be the connection networking termination unit of distributing optical fiber sensing optical system, constitute the two-way altogether light path distribution type fiber-optic interferometer of polarization irrelevant with monitored optical cable.The optical fibre light splitting device 4 of polarization irrelevant and 5 and communications optical cable in optical fiber 61,62 constitute the Mach-Zehnder interferometers jointly; After entering into isolator 2 and Polarization Controller 7 from the light of LASER Light Source from optical fiber 1, through the input end 311 of optical fibre light splitting device 3, respectively from output terminal 312 and 321 outputs; The light of output terminal 312 enters fibre optic interferometer by the input end 411 of optical splitter 4, from output terminal 522 outputs of optical splitter 5, gets back to receiving end 81 through optical fiber 63; The light of output terminal 321 enters fibre optic interferometer by the input end 512 that optical fiber 64 is input to optical splitter 5, from output terminal 421 outputs of optical splitter 4, gets back to receiving end 82.
2) processing unit 3211:
The processing unit structure as shown in Figure 2, form by laser instrument, the luminous receipts driving circuit of light, photoelectric switching circuit, laser power control circuit, simulation amplification and parts such as wave filter, high-speed AD acquisition plate, be mainly used to finish transmission, reception and the power adjustment of laser.System constantly sends laser signal as input stimulus to sensing unit, and the light signal that simultaneously reception is obtained transfers electric signal to and carries out filtering and amplification.Finishing signal after the above-mentioned processing will be converted into the very high digital signal of sampling rate by the high-speed AD acquisition plate and send control module to and carry out further signal analysis and processing.
3) control module 4211:
Form by parts such as wavelet sub-band decomposition, proper vector generation, neural metwork training, neural network identification, incident location, remote alarm interface.The digital signal that this unit at first sends processing unit is carried out the wavelet sub-band decomposition, obtains the time-frequency of each subband and the proper vector that energy feature is imported as neural network according to the result who decomposes then.Thereby obtaining sample according to actual environment trains neural network and obtains required neural network model.The signal to collecting that system just can be real-time is discerned to judge whether that event occurs afterwards.Obtain its positional information and carry out early warning and warning to main frame if judge that event occurs then incident positioned by remote alarm interface.To feed back typical event information and deposit the typical data storehouse in by main frame after each event recognition success.Control module will utilize the information of typical data Ku Neixin that network is fed back the reinforcement training simultaneously.
4) host computer system and host software:
Host computer system comprises system integration control, third party device control, relay driving, user interface, typical event affirmation, parts such as background data base and network service and electronic chart as shown in Figure 3, Figure 4.Main frame plays control to total system, the parameter setting, and local area network building, the auxiliary watch-dog that control third company provides drives relay and starts emergency set, stores the concurrent alert log information of delivering newspaper to functions such as specified network platforms.Operating personnel can be by the electronic chart of mainframe program interface start-up system and loading system institute infield.Operating personnel can also carry out the parameter setting at system environments and specific requirement after by the correlation technique training.In case receive warning message from control module, display alarm information on the position of incident will take place at electronic chart in system automatically.Simultaneity factor can also be carried out the further affirmation of incident or drive relay starting emergent scheme as the first-class device of making a video recording according to the third-party auxiliary watch-dog of startup of operating personnel's configuration automatic or manual.The details of simultaneous events will deposit background data base in and pass through other platforms of network destined.After obtaining confirming, incident will feed back to control module in order to strengthen neural metwork training as typical event.
Claims (2)
1, the external safety early-warning and the positioning system of a kind of optical cable, photoelectricity composite cable, mainly comprise Fibre Optical Sensor optical system, signal processing system and system software, it is characterized in that described Fibre Optical Sensor optical system is two-way light path distribution type fiber-optic interferometer altogether, signal processing system is dfb semiconductor laser instrument constant-current drive circuit, temperature-control circuit, PIN detector circuit and AD conversion Acquisition Circuit, and system software comprises front-end collection and pretreatment software bag, wavelet analysis and feature extraction software bag, time delay judgement software package and user interface.
2, according to claim 1 in optical system, the external safety early-warning of a kind of optical cable, photoelectricity composite cable and positioning system, it is characterized in that described two-way altogether light path distribution type fiber-optic interferometer, adopt sensing in two optical fibre light splitting devices identical and polarization irrelevant and communications optical cable or the photoelectricity composite cable to constitute etc. the interferometer of brachium jointly with single-mode fiber; The light that the dfb semiconductor laser instrument sends adopts the optical fibre light splitting device to be divided into aplanatic two-way through behind the optoisolator, and distributing is input to the two ends of interferometer through different Transmission Fibers; After the light of positive and negative both direction enters the optical splitter that constitutes interferometer, directly link to each other by straight-through arm; The two-way interference signal is got back to receiving end by different optical fiber, through the PIN detector light signal is converted to electric signal, obtain the interference signal of two-way waveform unanimity, convert digital signal to through AD then, enter system software and carry out pre-service, extract feature by wavelet analysis then, input neural network calculates, the identification incident; After event recognition is finished, according to event property, adopt time delay algorithm that the occurrence positions of incident is positioned, finally finish early warning and location to the infringement incident.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100603963A CN101566586B (en) | 2008-04-22 | 2008-04-22 | External safety early-warning and positioning system of optical cable and optical-electrical compound cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100603963A CN101566586B (en) | 2008-04-22 | 2008-04-22 | External safety early-warning and positioning system of optical cable and optical-electrical compound cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101566586A true CN101566586A (en) | 2009-10-28 |
| CN101566586B CN101566586B (en) | 2012-02-22 |
Family
ID=41282846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100603963A Expired - Fee Related CN101566586B (en) | 2008-04-22 | 2008-04-22 | External safety early-warning and positioning system of optical cable and optical-electrical compound cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101566586B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632510A (en) * | 2013-12-04 | 2014-03-12 | 国家电网公司 | Pre-warning system for preventing high-voltage underground long-distance-transmission power cable from being damaged by external force |
| CN104297845A (en) * | 2014-10-13 | 2015-01-21 | 武汉锐科光纤激光器技术有限责任公司 | Laser fiber transmission system capable of monitoring cladding light and feedback light |
| CN105490739A (en) * | 2015-11-25 | 2016-04-13 | 国家电网公司 | System and method for monitoring optical cable of backbone network |
| CN108957209A (en) * | 2018-08-01 | 2018-12-07 | 四川特旺通信科技有限公司 | A kind of broken string automatic detection device of telecommunication optical fiber optical cable production |
| CN110335430A (en) * | 2019-06-19 | 2019-10-15 | 中国科学院自动化研究所 | Pipeline safety monitoring system, method and device based on deep learning |
| CN111207304A (en) * | 2018-11-22 | 2020-05-29 | 北京世纪东方通讯设备有限公司 | Railway tunnel leaky cable vision inspection device and product positioning detection method |
| CN111275947A (en) * | 2020-02-12 | 2020-06-12 | 广东电网有限责任公司 | Power cable external construction monitoring system and method |
| CN116405110A (en) * | 2023-06-06 | 2023-07-07 | 四川天中星航空科技有限公司 | Multi-core optical cable fault positioning analysis equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2537978Y (en) * | 2002-04-09 | 2003-02-26 | 哈尔滨工程大学 | Optical fibre pre-buried concrete stick sensor |
| CN100514107C (en) * | 2006-06-30 | 2009-07-15 | 中国石油天然气集团公司 | Optical fiber safety early warning sensor installation method |
| CN200950125Y (en) * | 2006-09-14 | 2007-09-19 | 江苏省电力公司无锡供电公司 | Cable Duct Detector |
-
2008
- 2008-04-22 CN CN2008100603963A patent/CN101566586B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632510A (en) * | 2013-12-04 | 2014-03-12 | 国家电网公司 | Pre-warning system for preventing high-voltage underground long-distance-transmission power cable from being damaged by external force |
| CN104297845A (en) * | 2014-10-13 | 2015-01-21 | 武汉锐科光纤激光器技术有限责任公司 | Laser fiber transmission system capable of monitoring cladding light and feedback light |
| CN105490739A (en) * | 2015-11-25 | 2016-04-13 | 国家电网公司 | System and method for monitoring optical cable of backbone network |
| CN105490739B (en) * | 2015-11-25 | 2018-02-06 | 国家电网公司 | Backbone network optical cable monitoring system and method |
| CN108957209A (en) * | 2018-08-01 | 2018-12-07 | 四川特旺通信科技有限公司 | A kind of broken string automatic detection device of telecommunication optical fiber optical cable production |
| CN108957209B (en) * | 2018-08-01 | 2020-11-24 | 四川特旺通信科技有限公司 | Automatic broken line detection device for communication optical fiber cable production |
| CN111207304A (en) * | 2018-11-22 | 2020-05-29 | 北京世纪东方通讯设备有限公司 | Railway tunnel leaky cable vision inspection device and product positioning detection method |
| CN111207304B (en) * | 2018-11-22 | 2021-09-14 | 北京世纪东方通讯设备有限公司 | Railway tunnel leaky cable vision inspection device and product positioning detection method |
| CN110335430A (en) * | 2019-06-19 | 2019-10-15 | 中国科学院自动化研究所 | Pipeline safety monitoring system, method and device based on deep learning |
| CN111275947A (en) * | 2020-02-12 | 2020-06-12 | 广东电网有限责任公司 | Power cable external construction monitoring system and method |
| CN116405110A (en) * | 2023-06-06 | 2023-07-07 | 四川天中星航空科技有限公司 | Multi-core optical cable fault positioning analysis equipment |
| CN116405110B (en) * | 2023-06-06 | 2023-08-15 | 四川天中星航空科技有限公司 | Multi-core optical cable fault positioning analysis equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101566586B (en) | 2012-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101566586B (en) | External safety early-warning and positioning system of optical cable and optical-electrical compound cable | |
| CN107328465B (en) | Submarine Cable Vibration Monitoring System | |
| CN100561144C (en) | Distributed optical fiber vibration sensing method and device | |
| CN104040598B (en) | Interferometer type optical fiber interference detecting apparatus and detection method thereof | |
| CN102737462A (en) | Optical fiber distributed disturbance and video linkage long-distance circumference security monitoring system | |
| US11735038B2 (en) | Non-blind area real-time monitoring and alarming system for accident on freeway | |
| CN103780883A (en) | All-fiber perimeter security monitoring equipment capable of being in linkage with video | |
| CN102982639A (en) | Video monitoring optical fiber fence system and using method thereof | |
| CN108696314A (en) | A kind of communications optical cable line detection system and detection method | |
| US20230029221A1 (en) | Galloping monitoring of overhead transmission lines using distributed fiber optic sensing | |
| CN106781152A (en) | A kind of fiber grating fence intrusion alarm detecting system and method | |
| CN205121786U (en) | Tunnel video fire alarm system | |
| CN110260917A (en) | Smart Logo label and boundary tablet condition monitoring system based on optical fibre optical grating sensing array | |
| CN117409520A (en) | Railway perimeter intrusion monitoring method and system based on light vision fusion and deep learning | |
| CN104111404A (en) | Polarized light time domain reflection-based power transmission line fault detection system and positioning method | |
| CN109302229A (en) | A kind of multichannel optical cable safety pre-warning system based on wavelength-division multiplex | |
| US11881688B2 (en) | Dynamic anomaly localization of utility pole wires | |
| Boffi et al. | Real-time surveillance of rail integrity by the deployed telecom fiber infrastructure | |
| CN202916936U (en) | Video monitoring optical fiber fence system | |
| CN103023563B (en) | A kind of optical survey method | |
| CN111710118A (en) | System for monitoring circuit intrusion by highly sensitive optical cable sentinel between substations without changing existing circuit | |
| CN111404598B (en) | Engineering construction communication optical cable positioning system based on phase sensitive optical time domain reflection | |
| CN207197659U (en) | Submarine cable vibration monitoring device | |
| US10388128B2 (en) | Alarm system for a single mode optical fiber network | |
| CN105448014A (en) | Fence perimeter security protection system-based integrated wiring method and intrusion early warning method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG NUOKE ELECTRONIC TECHNOLOGY DEVELOPMENT C Free format text: FORMER NAME: NINGBO NUOKE ELECTRONIC TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 1101 room 396, 315000 liberal street, Zhejiang, Ningbo Patentee after: Zhejiang nuko Dsy technology Ltd. Address before: 1101 room 396, 315000 liberal street, Zhejiang, Ningbo Patentee before: Ningbo Nuoke Electronic Technology Development Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120222 |