CN104700527B - Cable anti-theft device and its method - Google Patents
Cable anti-theft device and its method Download PDFInfo
- Publication number
- CN104700527B CN104700527B CN201410428642.1A CN201410428642A CN104700527B CN 104700527 B CN104700527 B CN 104700527B CN 201410428642 A CN201410428642 A CN 201410428642A CN 104700527 B CN104700527 B CN 104700527B
- Authority
- CN
- China
- Prior art keywords
- cable
- alarm
- range cells
- out detection
- burn out
- 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
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The present invention relates to a kind of cable anti-theft device and its method, belong to cable theft-prevention field.The burglar alarm for cable; cable includes cable core, the protective layer outside cable core and the restrictive coating being wrapped in outside protective layer; the device includes alarm unit, control centre, burn out detection unit and range cells; control centre outputs signal to alarm unit and range cells; the input connection range cells of burn out detection unit, the output end connection control centre of burn out detection unit.The burn out detection unit that the present apparatus is used, the Weak current in circuit-under-test is detected using the C-V characteristic and combination control centre of triode, to judge the broken string situation of transmission line, once broken string situation occur can also alarm rapidly in ranging, to reduce economic loss, the false alarm and circuit very simple of existing detection circuit are avoided, the problem of burglar alarm for cable rate of false alarm is higher in the prior art is solved.
Description
Technical field
The present invention relates to field of cables, cable theft-prevention field is related specifically to.
Background technology
Power cable safeguard protection is the problem of power department will be solved always, and existing cable anti-theft alarm circuit is all adopted
One remote detection terminal with voltage detecting and power line carrier, PLC function is installed used in power cable end, so circuit
It is extremely complex so component is more, cost is high, and reliability is low, also due to wireless system is by terrain environment（Mountain area is remote
Area）Influence, it is difficult to be widely applied, and be used for the burglar alarm of street lamp and transformer side power cable, rate of false alarm
Compare high, the reliable anti-theft device demand of low cost is very big.
The content of the invention
In order to overcome the problem of burglar alarm for cable rate of false alarm is higher in the prior art, the present invention provides a kind of electricity
Cable anti-theft device and its method.
The technical scheme is that：A kind of burglar alarm for cable, cable includes cable core, outside cable core
Protective layer and the restrictive coating being wrapped in outside protective layer, the device include alarm unit, control centre, burn out detection unit and ranging
Unit, control centre outputs signal to alarm unit and range cells, and the input connection range cells of burn out detection unit are broken
The output end connection control centre of line detection unit.
The range cells include power supply, No. two power supplys, two be located in cable signal wire, more than two two
Pole pipe and the equal-sized resistance of resistance, a power supply and No. two reversal of power are connected in parallel between two signal wires, a power supply
Positive pole concatenates a switch K, and the whole diodes of No. two power sources in parallel, No. two positive sources and diode cathode are reverse, and each two
Pole pipe one resistance of series connection, in the terminal of a signal wire resistance in parallel, the output end of range cells is No. two power circuits
Crosspoint B.
Described control centre controls a power supply by switching K connections.
Diode in the range cells all in the same direction and is equidistantly placed.
The burn out detection unit includes triode Q, resistance and diode, and triode Q base stage passes through resistance, diode
The output end of range cells is connected, Q emitter stage connection public terminal GND, colelctor electrode connects power Vcc through resistance, and by collection
Electrode draws the output end of burn out detection unit.
The control centre includes display, display alarm information.
A kind of method of described burglar alarm for cable, its step is：
Step 1: circuit UNICOM；
Step 2: signal judges by open circuit；
Step 3: judged result sends control end back to；
Step 4: control end measures accident point.
The present invention has following good effect：The present apparatus use burn out detection unit, using triode C-V characteristic simultaneously
The Weak current in circuit-under-test is detected with reference to control centre, to judge the broken string situation of transmission line, can be avoided existing
The mistake alarm of circuit, and circuit very simple are detected, once broken string situation occur can also alarm rapidly in ranging, to reduce economy
Loss.The present apparatus is simple in construction, easy to use, it is not necessary to manually check, has saved labour, and can constantly carry out detection prison
Control, eliminates check frequency, improves security of system.
Brief description of the drawings
Fig. 1 is the fundamental diagram of the specific embodiment of the invention；
Fig. 2 is the working circuit diagram of specific embodiment of the invention burn out detection unit.
Embodiment
Illustrate present embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of burglar alarm for cable, cable include cable core, the protective layer outside cable core and
The restrictive coating outside protective layer is wrapped in, the device includes alarm unit, control centre, burn out detection unit and range cells, control
Center processed outputs signal to alarm unit, the input connection range cells of burn out detection unit, the output of burn out detection unit
End connection control centre.In addition, control centre includes display, when range cells break down, it can show over the display
Alarm signal, display can be LCDs.
The method of the burglar alarm for cable is：
Step 1: circuit UNICOM；
Step 2: signal judges by open circuit；
Step 3: judged result sends control end back to；
Step 4: control end measures accident point.The apparatus and method that the present invention is provided ensure that the low cost of cable theft-prevention
Property and reliability.
As shown in Fig. 2 range cells include power supply V1, No. two power supply V2, two signal wires, more than two two poles
Pipe and the equal-sized resistance of resistance.Signal wire is arranged in the protective layer outside cable core, a power supply V1 and No. two power supply V2
It is connected in reverse parallel between two signal thread ends, a power supply V1 positive pole concatenates a switch K, switch K is off, opened
One end of pass is the input A of range cells, and control centre is by switching K connection range cells.No. two power supply V2 are in parallel all
Diode, and diode is all in the same direction and is equidistantly placed.No. two power supply V2 positive pole and diode cathode is reverse, and each two
Pole pipe one resistance of series connection, in the terminal of a signal wire resistance in parallel, the output end of range cells is No. two power supply V2 circuits
Crosspoint B, output end connection burn out detection unit.When circuit is normal, only No. two power supply V2 are in running order, two poles
Pipe branch road is not turned on, and No. two power supply V2 and terminal resistance R constitute loop.When open circuit conditions occurs in circuit, where No. two power supply V2
Circuit Interrupt, burn out detection unit will send a signal to control centre, and range cells are made up of general resistance and diode,
Cost is low, easy to use.
As shown in Fig. 2 burn out detection unit includes triode Q, resistance and diode, triode Q base stage through resistance R1,
The output end B of range cells is connected after diode D, and through resistance R2 connection public terminal GNDs, and diode D negative electrodes and common port
Electric capacity C is connected between GND, emitter stage connection public terminal GND, colelctor electrode is drawn through resistance R3 connection power supply VCC, and in colelctor electrode
The output end of burn out detection unit, so that the signal of burn out detection unit output end is with the sampling on the output end B of range cells
Signal intensity, the output end of burn out detection unit is connected to control centre.The device only needs to the loading section range cells
It is placed in the protective layer outside cable core, remainder is all disposed within control room, observation detection circuit facilitates.
During cable work, signal wire is also at working condition, during path, No. two power supply V2 work of range cells, electric current
Signal is exported simultaneously gives burn out detection unit, and triode is in magnifying state, and the output end current of burn out detection unit is exaggerated,
Control centre is output to, control centre is according to Comparative result, it can be deduced that the normal conclusion of cable.Cable is stolen, and signal wire breaks
Lu Shi, triode is in cut-off working condition, the output end current of burn out detection unit is almost nil, and control centre is to receiving
After signal is contrasted, so that it may show that electric discontinuity of cable breaks down and be possible to stolen conclusion, control centre sends alarm signal
To alarm unit, while display display alarm information.Control centre can send a signal to switch K, switch K closures, one simultaneously
Number power supply V1 is that remaining range cells continue powered operation, now, diode and corresponding series resistance also in the loop, control
System can calculate the resistance number in loop centrally through measuring loop all-in resistance size, and because resistance is equidistant peace
Put, so control centre can calculate accident point rapidly to the distance of control centre.So as to the timely process accident of staff,
The present apparatus need not be checked manually, save labour, and can constantly carry out detection monitoring, eliminated check frequency, improved
Security of system.
Claims (4)
1. a kind of burglar alarm for cable, cable includes cable core, the protective layer outside cable core and is wrapped in protective layer
Outer restrictive coating, it is characterised in that：The device includes alarm unit, control centre, burn out detection unit and range cells, control
Center outputs signal to alarm unit and range cells, the input connection range cells of burn out detection unit, burn out detection list
The output end connection control centre of member；The range cells include a power supply, No. two power supplys, two signals in cable
Line, more than two diodes and the equal-sized resistance of resistance, a power supply and No. two reversal of power are connected in parallel on two signals
Between line, a positive source concatenates a switch K, the whole diodes of No. two power sources in parallel, No. two positive sources and diode
Positive pole is reverse, each one resistance of Diode series, and in the terminal of a signal wire resistance in parallel, the output end of range cells is
The crosspoint B of No. two power circuits；The burn out detection unit includes triode Q, resistance and diode, triode Q base stage
The output end of range cells is connected by resistance, diode, triode Q emitter stage connects public terminal GND, and colelctor electrode is through resistance
Power Vcc is connected, and by the output end of colelctor electrode extraction burn out detection unit.
2. burglar alarm for cable according to claim 1, it is characterised in that：Described control centre is by switching K
A connection number power supply of control.
3. burglar alarm for cable according to claim 1, it is characterised in that：Diode in the range cells is complete
Portion is in the same direction and is equidistantly placed.
4. burglar alarm for cable according to claim 1, it is characterised in that：The control centre includes display,
Display alarm information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428642.1A CN104700527B (en) | 2014-08-28 | 2014-08-28 | Cable anti-theft device and its method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428642.1A CN104700527B (en) | 2014-08-28 | 2014-08-28 | Cable anti-theft device and its method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104700527A CN104700527A (en) | 2015-06-10 |
| CN104700527B true CN104700527B (en) | 2017-09-29 |
Family
ID=53347606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410428642.1A Expired - Fee Related CN104700527B (en) | 2014-08-28 | 2014-08-28 | Cable anti-theft device and its method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104700527B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119216A (en) * | 2015-08-26 | 2015-12-02 | 芜湖市凯鑫避雷器有限责任公司 | High voltage wall bushing having crack monitoring device |
| CN105186417A (en) * | 2015-08-26 | 2015-12-23 | 芜湖市凯鑫避雷器有限责任公司 | High-voltage wall bushing with double-layer crack monitoring device |
| CN107545709A (en) * | 2016-06-29 | 2018-01-05 | 上海宝钢化工有限公司 | A kind of more spelling cable break alarm devices |
| CN107861021A (en) * | 2017-09-21 | 2018-03-30 | 天津市电力科技发展有限公司 | Cable theft-prevention positioner and method based on traveling wave characteristic |
| CN109921515B (en) * | 2019-03-12 | 2020-11-03 | 上海荷福人工智能科技（集团）有限公司 | Comprehensive power distribution management system |
| CN111080988A (en) * | 2019-12-24 | 2020-04-28 | 天地伟业技术有限公司 | Alarm input circuit capable of detecting loop and detection method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247899Y (en) * | 1995-06-05 | 1997-02-19 | 淄博电器厂 | Communication cable theftproof positioning alarm device |
| CN1143178A (en) * | 1995-08-14 | 1997-02-19 | 薛茂林 | Cable distance measuring method equipment |
| CN200997158Y (en) * | 2007-01-15 | 2007-12-26 | 张立 | Front-movable inducting band for buried pipeline safety alarm |
| CN201017417Y (en) * | 2007-03-16 | 2008-02-06 | 福建省交通科学技术研究所 | Power cable anti-theft alarm device |
| CN101539394B (en) * | 2009-04-30 | 2010-12-08 | 莱阳市科盾通信设备有限责任公司 | Intelligent communication cable alarm distance meter and test method thereof |
| US8378822B2 (en) * | 2009-06-26 | 2013-02-19 | Melvin Price | Cable theft monitoring system |
| CN102004209A (en) * | 2010-12-03 | 2011-04-06 | 丹东欣泰电气股份有限公司 | Distribution network cable fault on-line distance measuring equipment and distance measuring method |
| CN203192139U (en) * | 2013-04-12 | 2013-09-11 | 四川金信石信息技术有限公司 | Alarm device used for preventing cable from being cut sneakingly |
| CN204029084U (en) * | 2014-08-28 | 2014-12-17 | 安徽工程大学 | Cable anti-theft device |
-
2014
- 2014-08-28 CN CN201410428642.1A patent/CN104700527B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104700527A (en) | 2015-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104700527B (en) | Cable anti-theft device and its method | |
| CN104333364A (en) | AC solid state relay and fault detecting method of load circuit of same | |
| CN201229389Y (en) | Cable sheath insulation on-line monitoring device | |
| CN204231318U (en) | A kind of ac solid relay | |
| CN104155505A (en) | Ground wire electrification detection device, air conditioner and electrical equipment | |
| CN207800817U (en) | Cell safety monitoring device and battery modules | |
| CN204613333U (en) | A kind of arrester detecting device for electric system | |
| CN203838232U (en) | High-voltage electroscope circuit capable of self-checking | |
| CN204789735U (en) | Multi -functional discharge detection device of high voltage capacitor | |
| CN204178486U (en) | A kind of power cable anti-theft device | |
| CN204029084U (en) | Cable anti-theft device | |
| CN109244700A (en) | A kind of anti-error hanging earthing conductor device and control method | |
| CN206161764U (en) | Electric line earth leakage fault detection system based on signal trigger | |
| CN104700541A (en) | Anti-theft device and detection method for street lamp cable | |
| CN206378569U (en) | A kind of voltage relay abnormal detector | |
| CN205539154U (en) | High voltage electrified display locking apparatus | |
| CN206330560U (en) | Transmission line of electricity real-time detection apparatus | |
| CN214014597U (en) | Single lamp controller for detecting electric leakage | |
| CN107884666A (en) | MBUS bus short circuits detect circuit and its detection method | |
| CN108054457A (en) | Cell safety monitoring device and method | |
| CN203350346U (en) | Potential indicator with temperature measuring function | |
| CN103472345B (en) | A kind of electrical equipment grounding line burn-in test circuit | |
| CN209071636U (en) | A kind of anti-error hanging earthing conductor device | |
| CN103001176A (en) | Current-leakage protection circuit of driving circuit for road traffic signal controller | |
| CN105186417A (en) | High-voltage wall bushing with double-layer crack monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xin Jianfang Inventor after: Li Shujing Inventor after: Zhu Zhilong Inventor after: Zhang Fang Inventor after: Liang Guangjun Inventor after: Li Linguo Inventor before: Liang Guangjun |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20170929 Termination date: 20190828 |