CN103592576B - Based on anti-theft monitoring positioning system and the monitoring method of the power cable of GIS - Google Patents
Based on anti-theft monitoring positioning system and the monitoring method of the power cable of GIS Download PDFInfo
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- CN103592576B CN103592576B CN201310506587.9A CN201310506587A CN103592576B CN 103592576 B CN103592576 B CN 103592576B CN 201310506587 A CN201310506587 A CN 201310506587A CN 103592576 B CN103592576 B CN 103592576B
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Abstract
The anti-theft monitoring positioning system of the power cable based on GIS disclosed by the invention and monitoring method, send a small-signal pulse train be made up of multiple low voltage pulse signal at short notice, prevent to some extent wrong report and improve positioning precision.Small-pulse effect group propagate in cable shield, and the loss of paired pulses is less than propagating in heart yearn, also saves electric energy to a certain extent.Adopt GPRS message transmission module, host computer and terminal juncture can be allowed to keep being connected, guarantee that warning message can promptly and accurately send.The upper function being equipped with GIS accurately locates the geographic position of stealing cutpoint, and can provide the best repairing course of action arriving and steal cutpoint, be convenient to staff can fast before go to rush to repair.
Description
Technical field
The invention belongs to electric system cable theft-prevention technical field, be specifically related to a kind of anti-theft monitoring positioning system of the power cable based on GIS, the invention still further relates to and adopt said system to carry out the method for monitoring.
Background technology
Power construction side, after cabling, is often stolen by lawless person and cuts, cause the loss of property and the delay of engineering project.When particularly constructing in the wild, the situation that cable is lost is many.Even sometimes, cable has been crossed after being cut and has just been found for a long time.Dependence personnel nurse can solve some problems, but distance, inspection difficulty are large, cable still can not be avoided to steal cutting having in people's nurse situation.In addition, with regard to current cable tester, their rate of false alarm is high, and location is accurate not, accurately can not provide the geographic position of stealing cutpoint.Therefore, improve in the urgent need to the means by technology and solve.
Summary of the invention
The object of this invention is to provide a kind of anti-theft monitoring positioning system of the power cable based on GIS, what the robber solving existing power cable cut can not accurately locate geographical position problems.
Another object of the present invention is to provide the theft prevention monitoring method of the power cable based on GIS.
The technical solution used in the present invention is; based on the anti-theft monitoring positioning system of the power cable of GIS; comprise CPU main control module; CPU main control module is connected to pulse train protected location, pulse train driver element, touch control type LCD screen, battery supply; CPU main control module is also communicated with the host computer being equipped with GIS by GPRS sending module, and battery supply also shields with touch control type LCD respectively, GPRS sending module is connected.
Another technical scheme of the present invention is, based on the theft prevention monitoring method of the power cable of GIS, specifically implements according to following steps:
Step 1: test and setting;
Step a: selected by touch control type LCD screen and determine length and the insulation course material of current wanted detection streamer, CPU main control module determines the umber of pulse transmitted, width and velocity of wave corresponding to it;
Step b:CPU main control module sends PWM ripple, is amplified into cable by pulse train driver element, and waveform is caught by CPU main control module more after reflection;
Step c:CPU main control module closes timer after receiving reflected signal group, and storing this time difference is the standard time difference;
Step 2: put into operation;
Step a:CPU main control module constantly sends PWM ripple according to some cycles, is amplified into cable by pulse train driver element, and waveform is caught by CPU main control module more after reflection;
First comparison two subwave of step b:CPU main control module, judges that whether polarity is identical, if identical, then the time difference detected and the standard time difference is done difference, if not identical, then continues to send PWM ripple;
Step c: cut if there is robber, bring difference into formulae discovery, calculate and steal cutpoint to the distance of check point, its computing formula is: fault distance=this the time difference/standard the time difference × cable overall length;
Steps d: CPU main control module sends information to main frame or terminal, the information content comprises the geographic position of the numbering of this detecting device, position and robber's cutpoint.
Feature of the present invention is also,
In the step a of step 1 wherein, umber of pulse definition base is: when cable length is less than 10km, once launches 3 pulses; When cable length is greater than 10km, often increase by 5 kilometers of just corresponding increase pulses; Pulse width definition base is: when cable length is less than or equal to 1km, and suggestion pulsewidth is 0.2 μ s; When cable length be greater than 1km be less than 10km time, suggestion pulsewidth be 2 μ s; When being greater than 10km, often increase 5km, just corresponding increase by 1 μ s; The definition base of velocity of wave is: paper oil insulation gets 160m/ μ s, and crosslinked polyethylene gets 170m/ μ s, and Polyvinylchloride gets 180m/ μ s, and rubber gets 220m/ μ s.
The steps d mesolow output pulse signal group of step 2 is wherein 10 ~ 100 volts, and the scope of pulse width is 0.2 ~ 4 μ s.
The invention has the beneficial effects as follows, the inventive method is compared advantage with existing method of testing and is, it sends a small-signal pulse train be made up of multiple low voltage pulse signal at short notice, prevent to some extent wrong report and improves positioning precision.Small-pulse effect group propagate in cable shield, and the loss of paired pulses is less than propagating in heart yearn, also saves electric energy to a certain extent.Adopt GPRS message transmission module, host computer and terminal juncture can be allowed to keep being connected, guarantee that warning message can promptly and accurately send.The upper function being equipped with GIS accurately locates the geographic position of stealing cutpoint, and can provide the best repairing course of action arriving and steal cutpoint, be convenient to staff can fast before go to rush to repair.
Hardware aspect, the present invention have employed novel " small-signal pulse train method " and locate and steal the geographic position of cutpoint, GIS location technology wherein, and be all proven technique based on the ICT (information and communication technology) of GPRS.The PWM wave width that 16 single-chip microcomputers send is adjustable, and has high-precision capturing function, and output frequency is up to 66MHz, can meet the engineering requirement of all wireline tests.Have antijamming capability strong, real-time monitoring effect is good, and positioning precision is high, the feature that rate of false alarm is low, and volume is little, lightweight, easy for installation.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of anti-theft monitoring positioning system terminal of the present invention;
Fig. 2 sends under " test and arrange pattern " and the burst waveform figure received;
Fig. 3 is that " put into operation pattern " sends and the burst waveform figure received;
Fig. 4 is the workflow block diagram of " test and arrange pattern ";
Fig. 5 is the workflow block diagram of " put into operation pattern ";
Fig. 6 realizes block diagram based on the anti-theft monitoring positioning system of the power cable of GIS.
In figure, 1.CPU main control module, 2. pulse train protected location, 3. pulse train driver element, 4. touch control type LCD screen, 5. battery supply, 6.GPRS sending module, is 7. equipped with the host computer of GIS.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The present invention is based on the structure of the anti-theft monitoring positioning system of the power cable of GIS; as shown in Figure 1; comprise CPU main control module 1; CPU main control module 1 is connected to pulse train protected location 2, pulse train driver element 3, touch control type LCD screen 4, battery supply 5; CPU main control module 1 is also communicated with the host computer 7 being equipped with GIS by GPRS sending module 6, and battery supply 5 also shields 4 respectively with touch control type LCD, GPRS sending module 6 is connected.
CPU main control module 1, for the pwm signal group sending different pulse number and the ensemble of catching from cable reflection, and can the amplitude of gating pulse group driver element output signal group; Pulse train protected location 2, protection CPU is burned because signal amplitude is excessive; Pulse train driver element 3, the PWM ripple for being sent by CPU zooms into the small-signal pulse train of different amplitude; Dismountable touch control type LCD screen 4, for arranging umber of pulse, pulse width and pulse amplitude, meets the demand of different user; GPRS sending module 6, for sending the exact position of stealing cutpoint to host computer; Battery supply 5, powers to whole system; Be equipped with the host computer 7 of GIS, adopt industrial control computer, generalized information system is housed, for showing the exact geographic location stealing cutpoint and the optimal path providing arrival robber cutpoint.
As shown in Figure 2, under " test and pattern is set ": the every terms of information that tested cable is set by touch screen, determine the standard time difference of intracellular signaling.In figure, corresponding two corrugation pitches are from being exactly the standard time difference, and pulse train number can oneself set, and pulse train is above for sending pulse train, and subsequent pulse group is received pulse group;
As shown in Figure 3, under " put into operation pattern ": CPU sequential filming three 5V, length 0.2 ~ 4 μ s pulsating wave, the small-signal pulse train that an amplitude range 10 ~ 100V does not wait is exported after driver module amplifies, the pulse signal launched enters cable, caught by CPU capturing unit after conduction and reflection, then whether CPU is identical by the polarity of comparison twice waveform, if identical, calculate fault distance further, and the accurate geographic position stealing cutpoint is sent by GPRS sending module, host computer accurately can be located by GIS and on map, be shown the accurate location stealing cutpoint.If normal, then control CPU circulation transponder pulse signal.In figure, corresponding two corrugation pitches are from being exactly the standard time difference, and pulse train number can oneself set, and pulse train is above for sending pulse train, and subsequent pulse group is received pulse group;
The present invention adopts said system to carry out the method for monitoring, and specifically implements according to following steps:
Step 1: test and setting:
The first step: selected by touch control type LCD screen and determine length and the insulation course material of current wanted detection streamer, CPU main control module will determine the umber of pulse transmitted, width and velocity of wave corresponding to it.Its umber of pulse definition base is: when cable length is less than 10km, once launches 3 pulses; When cable length is greater than 10km, often increase by 5 kilometers of just corresponding increase pulses.Pulse width definition base: when cable length is less than or equal to 1km, suggestion pulsewidth is 0.2 μ s; When cable length be greater than 1km be less than 10km time, suggestion pulsewidth be 2 μ s; When being greater than 10km, often increase 5km, just corresponding increase by 1 μ s.The definition base of velocity of wave is: paper oil insulation gets 160m/ μ s, and crosslinked polyethylene gets 170m/ μ s, and Polyvinylchloride gets 180m/ μ s, and rubber gets 220m/ μ s.
Second step: CPU main control module sends PWM ripple, is amplified into cable by pulse train driver element, and waveform is caught by CPU main control module more after reflection.
3rd step: CPU main control module closes timer after receiving reflected signal group, storing this time difference is the standard time difference.
Step 2: put into operation:
The first step: CPU main control module constantly sends PWM ripple according to some cycles, is amplified into cable by pulse train driver element, and waveform is caught by CPU main control module more after reflection.
Second step: CPU main control module will first comparison two subwave, judges that whether polarity is identical, if identical, then the time difference detected and the standard time difference is done difference, if not identical, then continues to send PWM ripple.
3rd step: cut if there is robber, bring difference into formulae discovery, calculates and steals the distance of cutpoint to check point.Its computing formula is: fault distance=this the time difference/standard the time difference × cable overall length.
4th step: CPU main control module sends information to main frame or terminal, the information content comprises the geographic position of the numbering of this detecting device, position (longitude and latitude) and robber's cutpoint.Wherein, described low pressure output pulse signal group is 10 ~ 100 volts, pulse width range 0.2 ~ 4 μ s.
As shown in Figure 1, under " test and pattern be set " (process flow diagram is as Fig. 4), touch screen being received cable theft-prevention cuts in system, start " test pattern ", then need manually to carry out arranging the every attribute needing protective cable, wherein mainly comprise length and its insulating layer material etc., CPU can determine the velocity of wave conducted in cable shield of small-signal group and the pulse width of each small-signal respectively by the parameters inputted.Then carry out the range finding test under cable fine status, first, directly received on the port of pulse driver unit by cable shield (namely conductive layer), in addition, conductive layer also will connect the signal capture port of CPU.Due to cable conduction layer ground connection, what capturing unit first time received is the pulse train sent from driver element, second time receive what be reflected back being is a negative pulse group (as Fig. 2), now CPU will calculate the front and back time difference that two subpulses arrive, then this time difference recorded and save as " the standard time difference ", and showing the exact length of this cable on a display screen.After being completed, power-off also pulls up touch screen port, now, just the theft-proof monitor preserving the standard time difference can be carried on the one end of the power cable needing monitoring.
As shown in Figure 1, under " put into operation pattern ", first, cable shield (namely conductive layer) is connected on the port of pulse driver unit, the signal capture port of another termination CPU.Now, whole system is set to " put into operation pattern ", (process flow diagram is as Fig. 5).Under normal circumstances, CPU periodically can send a small-signal pulse train, and this ensemble can be amplified into cable through driver element.If cable conduction layer ground connection, what be reflected back will be a negative pulse group (as Fig. 2), contrary with transmitted wave polarity, after built-in waveform Comparison Circuit comparison, CPU finds without exception, then can order whole system continue to repeat said process, until find that fault breaks circulation.When there is robber and cutting, first, the pulse train be reflected back should be a positive pulse group (as Fig. 3), then, CPU can after capturing this signal, identical with transmitted wave polarity through finding after the comparison of transmitted wave polarity, thus jump out circulation, start the time difference calculating twice respective pulses, this time difference must be not equal to zero.Then, according to the program finished writing in advance and formula, calculate according to " the actual time difference " and " the standard time difference " that calculate and steal the distance of cutpoint to check point.Finally, order GPRS module sends the exact geographic location stealing cutpoint to host computer.Finally, the accurate geographic position stealing cutpoint and the optimal path arriving this robber's cutpoint will be out integrated and show on the screen of host computer, to go before related personnel to carry out emergency treatment.
As shown in Figure 6, first, cable theft-prevention monitoring terminal is operated in " test and arrange pattern ", under this pattern, the every terms of information of tested cable is set by detachable touch screen, determines the standard time difference of intracellular signaling, be then stored in the normal data district of terminal, and this normal data is sent to host computer by GPRS communication base station, host computer arranges the physics cartographic information of this cable for the information of this terminal.Then, cable theft-prevention monitoring terminal is operated in " put into operation pattern ", cuts if power cable is not stolen, and terminal sends pulse train, received pulse, transmission normal information to host computer always, and host computer shows normal information after receiving this information in computer screen.If there is robber to cut, cable theft-prevention monitoring terminal can send the geographic position of stealing cutpoint by GPRS communication base station to host computer, such host computer can show the detail location stealing cutpoint on screen based on GIS, and provide this robber's cutpoint best route of arrival, and sending these information to relevant responsible official by note form, relevant responsible official adopts remedial measures immediately.
Claims (1)
1. based on the theft prevention monitoring method of the power cable of GIS, it is characterized in that, adopt the anti-theft monitoring positioning system based on the power cable of GIS, its structure is: comprise CPU main control module (1), CPU main control module (1) is connected to pulse train protected location (2), pulse train driver element (3), touch control type LCD screen (4), battery supply (5), CPU main control module (1) is also communicated with the host computer (7) being equipped with GIS by GPRS sending module (6), described battery supply (5) also shields (4) with touch control type LCD respectively, GPRS sending module (6) is connected,
Specifically implement according to following steps:
Step 1: test and setting;
Step a: selected by touch control type LCD screen (4) and determined length and the insulation course material of current wanted detection streamer, CPU main control module (1) determines the umber of pulse transmitted, width and velocity of wave corresponding to it;
The definition base of described umber of pulse is: when cable length is less than 10km, once launches 3 pulses; When cable length is greater than 10km, often increase by 5 kilometers of just corresponding increase pulses; Pulse width definition base is: when cable length is less than or equal to 1km, and suggestion pulsewidth is 0.2 μ s; When cable length be greater than 1km be less than 10km time, suggestion pulsewidth be 2 μ s; When being greater than 10km, often increase 5km, just corresponding increase by 1 μ s; The definition base of velocity of wave is: paper oil insulation gets 160m/ μ s, and crosslinked polyethylene gets 170m/ μ s, and Polyvinylchloride gets 180m/ μ s, and rubber gets 220m/ μ s;
Step b:CPU main control module (1) sends PWM ripple, is amplified into cable by pulse train driver element (3), and waveform is caught by CPU main control module (1) more after reflection;
Close timer after step c:CPU main control module (1) receives reflected signal group, storing the time difference is the standard time difference;
Step 2: put into operation;
Step a:CPU main control module (1) constantly sends PWM ripple according to some cycles, is amplified into cable by pulse train driver element (3), and waveform is caught by CPU main control module (1) more after reflection;
Step b:CPU main control module (1) first comparison two subwave, judges that whether polarity is identical, if identical, then the time difference detected and the standard time difference is done difference, if not identical, then continues to send PWM ripple;
Step c: cut if there is robber, bring difference into formulae discovery, calculate and steal cutpoint to the distance of check point, its computing formula is: fault distance=this the time difference/standard the time difference × cable overall length;
Steps d: CPU main control module (1) sends information to main frame or terminal, the information content comprises the geographic position of the numbering of detecting device, position and robber's cutpoint.
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| CN201310506587.9A CN103592576B (en) | 2013-10-24 | 2013-10-24 | Based on anti-theft monitoring positioning system and the monitoring method of the power cable of GIS |
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| CN201310506587.9A CN103592576B (en) | 2013-10-24 | 2013-10-24 | Based on anti-theft monitoring positioning system and the monitoring method of the power cable of GIS |
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| CN103592576B true CN103592576B (en) | 2015-09-30 |
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| CN109373883B (en) * | 2018-10-31 | 2021-01-29 | 国网重庆市电力公司电力科学研究院 | Power cable length measuring method, computer readable storage medium and electronic terminal |
| CN110221184B (en) * | 2019-07-17 | 2020-02-21 | 广东电网有限责任公司 | Medium-voltage single-core crosslinked cable metal shielding layer fault detection device and detection method |
| CN110837005B (en) * | 2019-11-13 | 2022-06-21 | 国家电网有限公司 | Method for detecting output pulse width precision of automation and protection equipment |
| CN113253062B (en) * | 2021-06-18 | 2021-09-28 | 广东电网有限责任公司佛山供电局 | Power cable fault inspection system based on risk hidden danger |
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| US7724135B2 (en) * | 2007-03-29 | 2010-05-25 | Checkpoint Systems, Inc. | Coiled cable display device |
| CN201820326U (en) * | 2010-04-28 | 2011-05-04 | 苏州市邓尉工业设备安装有限公司 | Cable anti-theft device |
| CN102540014B (en) * | 2011-12-22 | 2014-07-16 | 西安四方机电有限责任公司 | Online real-time anti-theft and anti-cut device and method for power cable |
| CN203249988U (en) * | 2013-01-25 | 2013-10-23 | 北京飞举电气有限公司 | Power cable antitheft broken line positioning device |
| CN103198600B (en) * | 2013-02-28 | 2016-03-16 | 上海市电力公司 | A kind of cable shield burglar alarm for power distribution network |
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Effective date of registration: 20170329 Address after: The road high tech Zone Technology 710065 Shaanxi city of Xi'an province No. 30 Cheshire force A-11103 Patentee after: Shaanxi LAN Yue Electronic Technology Co., Ltd. Address before: 710048 Shaanxi city of Xi'an Province Jinhua Road No. 5 Patentee before: Xi'an University of Technology |
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