CN104700541A - Anti-theft device and detection method for street lamp cable - Google Patents
Anti-theft device and detection method for street lamp cable Download PDFInfo
- Publication number
- CN104700541A CN104700541A CN201510135796.6A CN201510135796A CN104700541A CN 104700541 A CN104700541 A CN 104700541A CN 201510135796 A CN201510135796 A CN 201510135796A CN 104700541 A CN104700541 A CN 104700541A
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- China
- Prior art keywords
- circuit
- road lighting
- voltage
- lighting cable
- cable
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
Abstract
The invention discloses a simple, convenient and reliable anti-theft system for a street lamp cable. The anti-theft system for the street lamp cable comprises a front controller and a small loop at the end used for applying weak voltage signals for the street lamp cable when a street lamp switch is turned off; the open circuit and short circuit of the cable are judged through detecting the voltage of an access point, and meanwhile, the front controller sends an alarm and sends information to a dedicated worker to detect the circuit. The anti-theft system for the street lamp cable is suitable for monitoring and protecting the power supply cable for the street lamp and has advantages that the equipment is simple, the maintenance cost is low, the anti-theft system is not influenced by the on and off of the street lamp switch, the reliability is high, the influence to the street lamp on the circuit is avoided, and the like.
Description
Technical field
The invention belongs to and improve the antitheft reliability engineering field of road lighting cable, particularly a kind of simple, maintenance cost is low, reliability is high anti-theft detection method based on road lighting cable.
Background technology
In recent years, because non-ferrous metal appreciates, city size expands, and laborers from other areas increases, the situation acceleration deterioration that light conduits is stolen.Data display according to statistics, within 2003, Hangzhou amounts to 800,000 yuan because of the stolen loss of road lighting cable, within 2004, is 2,880,000 yuan, and 2005 because the stolen direct loss of cable are up to 5,000,000 yuan.The stolen loss caused of cable increases with the degree more than 30% every year, becomes every street lighting managerial personnel one piece of huge worry in the heart.
Present normally used carrier system carries out antitheft, is not suitable for the public lighting circuit of common transformer.Due to residential electricity consumption and factory's electricity consumption all wherein, noise signal on circuit will be made stronger, and when being better than carrier signal, false-alarm will produce, see accompanying drawing 1; Be not suitable for the situation of overlength circuit (coverage of usual power carrier is 500 meters).Sometimes section itself long (being greater than 1km), lamp quantity of receiving is many, and building-out capacitor quantity is corresponding also many, and electric capacity can absorb the carrier signal of intermediate frequency (100k-300k) in a large number, and then communication is affected.Broken string alarm during being not suitable for turning off the light.Because power carrier communication needs end to have electricity to realize break alarm, so generally install lithium battery additional can complete power carrier communication in period of turning off the light by lithium battery power supply.But because service life of lithium battery is generally discharge and recharge 300 times, that is discharge and recharge once a day can only maintain about 10 months, then person is difficult to accept by being road lamp management for maintenance, maintenance cost and false-alarm quantity.
Summary of the invention
The object of the present invention is to provide the anti-theft detection method of road lighting cable, in order to overcome the deficiencies in the prior art.
The initiating terminal that present invention resides in road lighting cable circuit increases a voltage signal injection circuit and voltage detection circuit, at the tail end of a road lighting cable circuit signal conditioning circuit in parallel.
When described road lighting cable circuit passive state, inject a small voltage signal, detected the voltage existed in road lighting cable circuit by voltage detection circuit.
When described road lighting cable circuit exists operating voltage, signal conditioning circuit is open circuit, and when cable line situation with no pressure, signal conditioning circuit line attachment forms a weak electrical loop.
Detection method of the present invention comprises the steps:
Step 1, when road lighting cable situation with no pressure, injection and voltage detection circuit inject a less voltage signal.
Step 2, the tail end of cable line is linked into signal conditioning circuit and forms loop.
Step 3, because street lamp in a non-operative state, the resistance of road lamp device is infinitely great, now there is resistance in antitheft measure loop to be made up of tail end diode, resistance and line resistance, dominant resistance in circuit is diode in signal conditioning circuit, there is the size that adjustable resistance controls electric current in antitheft measure loop in voltage signal injection circuit.
Step 4, voltage on the later detection line in real time of initiating terminal injecting voltage signal, when collection voltage is the coefficient that diode voltage is multiplied by that is greater than 1, so there is not fault in cable line, when gathering the voltage itself that voltage is injection, so there is the phenomenon of open circuit in cable line, now sends warning.There is open circuit in circuit, illustrates to there is cable by the possibility of stealing.When collection voltage is zero, now judge that road lighting cable exists the situation of short circuit, need to overhaul.
Advantage of the present invention is:
1. detection method is more perfect, and the situation that there is open circuit or short circuit for circuit sends fault alarm respectively;
2. the burglar alarm protocols call end during turning off the light is without the need to providing any type of power supply;
3. the voltage being attached to circuit is under normal circumstances very low, can not have any impact to other devices of circuit;
4. because circuit simple, easy-to-use, install and maintenance cost low;
5. the burglar alarm scheme during turning on light and line status (i.e. line length, lamp-type) have nothing to do;
6. end-equipment and control box front-end equipment all possess the multiple safeguard procedures such as Anti-surging.
Accompanying drawing explanation
Accompanying drawing 1 is existing carrier wave anti-theft technique schematic diagram.
Accompanying drawing 2 is structural representation of the present invention.
Accompanying drawing 3 is antitheft testing circuit schematic diagram.
Accompanying drawing 4 is logic control chart.
Accompanying drawing 5 is signal conditioning circuit.
Embodiment
Below in conjunction with the accompanying drawing 2 to 5 in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention, and not.It is whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The initiating terminal that present invention resides in road lighting cable circuit 1 increases a voltage signal injection circuit 11 and voltage detection circuit 12, at the tail end of road lighting cable circuit 1 signal conditioning circuit 2 in parallel.
When described road lighting cable circuit 1 passive state, inject a small voltage signal, detected the voltage existed in road lighting cable circuit 1 by voltage detection circuit 12.
When described road lighting cable circuit 1 exists operating voltage, signal conditioning circuit 2 is open circuit, and when road lighting cable circuit 1 is in situation with no pressure, signal conditioning circuit 2 line attachment forms a weak electrical loop.
Detection method comprises the steps:
Step 1, when road lighting cable circuit 1 situation with no pressure, voltage signal injection circuit 11 and voltage detection circuit 12 inject a less voltage signal.
Step 2, the tail end of road lighting cable circuit 1 is linked into signal conditioning circuit 2 and forms loop.
Step 3, because street lamp in a non-operative state, the resistance of road lamp device is infinitely great, in antitheft measure loop, now there is resistance be made up of tail end diode, resistance and line resistance, dominant resistance in circuit is diode in signal conditioning circuit, there is the size that adjustable resistance controls electric current in antitheft measure loop in voltage signal injection circuit.
Step 4, initiating terminal injecting voltage signal is voltage on detection line later in real time, when gather voltage be diode voltage be multiplied by one close to 1 coefficient, so there is not fault in cable line.
When gathering the voltage itself that voltage is injection, so there is the phenomenon of open circuit in road lighting cable circuit 1, now sends warning.
There is open circuit in road lighting cable circuit 1, illustrates now there is cable by the possibility of stealing.
When collection voltage is zero, now judge that road lighting cable circuit 1 exists the situation of short circuit, need to overhaul.
Claims (5)
1. based on an anti-theft device for road lighting cable, it is characterized in that, the initiating terminal being included in road lighting cable circuit increases a voltage signal injection circuit and voltage detection circuit, at the tail end of a road lighting cable circuit signal conditioning circuit in parallel.
2. a kind of anti-theft device based on road lighting cable according to claim 1, is characterized in that, when described road lighting cable circuit passive state, injects a small voltage signal, is detected the voltage existed in road lighting cable circuit by voltage detection circuit.
3. a kind of anti-theft device based on road lighting cable according to claim 2, is characterized in that, when described road lighting cable circuit exists operating voltage, signal conditioning circuit is open circuit.
4. a kind of anti-theft device based on road lighting cable according to claim 2, is characterized in that, described road lighting cable circuit situation with no pressure, signal conditioning circuit line attachment forms a weak electrical loop.
5. based on a detection method for road lighting cable, it is characterized in that, comprise the steps:
Step 1, when road lighting cable circuit situation with no pressure, injection and voltage detection circuit inject a less voltage signal;
Step 2, the tail end of road lighting cable circuit is linked into signal conditioning circuit and forms loop;
Step 3, because street lamp in a non-operative state, the resistance of road lamp device is infinitely great, now there is resistance in antitheft measure loop to be made up of tail end diode, resistance and line resistance, dominant resistance in circuit is diode in signal conditioning circuit, there is the size that adjustable resistance controls electric current in antitheft measure loop in voltage signal injection circuit;
Step 4, voltage on the later detection line in real time of initiating terminal injecting voltage signal circuit, when collection voltage is the coefficient that diode voltage is multiplied by that is greater than 1, so there is not fault in road lighting cable circuit, when gathering the voltage itself that voltage is injection, so there is the phenomenon of open circuit in road lighting cable circuit, now sends warning; There is open circuit in road lighting cable circuit, illustrates to there is cable by the possibility of stealing; When collection voltage is zero, now judge that road lighting cable circuit exists the situation of short circuit, need to overhaul.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510135796.6A CN104700541B (en) | 2015-03-27 | 2015-03-27 | A kind of anti-theft detection method based on road lighting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510135796.6A CN104700541B (en) | 2015-03-27 | 2015-03-27 | A kind of anti-theft detection method based on road lighting cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104700541A true CN104700541A (en) | 2015-06-10 |
| CN104700541B CN104700541B (en) | 2017-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510135796.6A Expired - Fee Related CN104700541B (en) | 2015-03-27 | 2015-03-27 | A kind of anti-theft detection method based on road lighting cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN104700541B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105741468A (en) * | 2016-03-18 | 2016-07-06 | 上海路辉电子科技有限公司 | Cable antitheft alarm system and method |
| CN108845521A (en) * | 2018-06-15 | 2018-11-20 | 河北天防电子信息工程有限公司 | Closed-loop intelligent anti-theft Control management system |
| CN109658656A (en) * | 2019-01-07 | 2019-04-19 | 赣州市金电电子设备有限公司 | A kind of 24 hours online theft preventing methods of road lighting cable using N weeks variable current |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924549Y (en) * | 2006-06-15 | 2007-07-18 | 杭州瑞琦信息技术有限公司 | Lighting cable power-off stealing detection device |
| CN2927202Y (en) * | 2006-07-24 | 2007-07-25 | 桂林市金源通信有限公司 | Safety electric cable device of streetlight |
| CN200950159Y (en) * | 2006-09-25 | 2007-09-19 | 广州长正电子技术有限公司 | Anti-theft device for road lamp cable |
| CN202694483U (en) * | 2012-07-04 | 2013-01-23 | 镇江智拓智能科技发展有限公司 | Street lamp cable antitheft detection device |
| WO2013170564A1 (en) * | 2012-05-17 | 2013-11-21 | 上海植晶生物科技有限公司 | Street lamp cable theft protection system |
-
2015
- 2015-03-27 CN CN201510135796.6A patent/CN104700541B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924549Y (en) * | 2006-06-15 | 2007-07-18 | 杭州瑞琦信息技术有限公司 | Lighting cable power-off stealing detection device |
| CN2927202Y (en) * | 2006-07-24 | 2007-07-25 | 桂林市金源通信有限公司 | Safety electric cable device of streetlight |
| CN200950159Y (en) * | 2006-09-25 | 2007-09-19 | 广州长正电子技术有限公司 | Anti-theft device for road lamp cable |
| WO2013170564A1 (en) * | 2012-05-17 | 2013-11-21 | 上海植晶生物科技有限公司 | Street lamp cable theft protection system |
| CN202694483U (en) * | 2012-07-04 | 2013-01-23 | 镇江智拓智能科技发展有限公司 | Street lamp cable antitheft detection device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105741468A (en) * | 2016-03-18 | 2016-07-06 | 上海路辉电子科技有限公司 | Cable antitheft alarm system and method |
| CN108845521A (en) * | 2018-06-15 | 2018-11-20 | 河北天防电子信息工程有限公司 | Closed-loop intelligent anti-theft Control management system |
| CN109658656A (en) * | 2019-01-07 | 2019-04-19 | 赣州市金电电子设备有限公司 | A kind of 24 hours online theft preventing methods of road lighting cable using N weeks variable current |
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| Publication number | Publication date |
|---|---|
| CN104700541B (en) | 2017-08-11 |
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