CN104700541B - A kind of anti-theft detection method based on road lighting cable - Google Patents
A kind of anti-theft detection method based on road lighting cable Download PDFInfo
- Publication number
- CN104700541B CN104700541B CN201510135796.6A CN201510135796A CN104700541B CN 104700541 B CN104700541 B CN 104700541B CN 201510135796 A CN201510135796 A CN 201510135796A CN 104700541 B CN104700541 B CN 104700541B
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- circuit
- road lighting
- lighting cable
- voltage
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The invention discloses easy, the reliable streetlamp cable anti-theft system of one kind, include the small loop at front controller and end, for applying weaker voltage signal to road lighting cable in road lamp switch closed mode；This cable is judged by detecting the voltage swing of access point with the presence or absence of open circuit and the situation of short circuit, while sending alarm by front controller and sending information to specialized work personnel inspection circuit.The present invention is applied to monitor and protection street lamp power supply, road lamp power supply cable, has the advantages that equipment is simple, maintenance cost is low, is not influenceed by road lamp switch disconnections, reliability height, street lamp on circuit will not be impacted.
Description
Technical field
The reliability engineering field antitheft the invention belongs to improve road lighting cable, particularly a kind of letter based on road lighting cable
The single, anti-theft detection method that maintenance cost is low, reliability is high.
Background technology
In recent years, because non-ferrous metal appreciates, city size expands, laborers from other areas increase, what light conduits was stolen
Situation accelerates to deteriorate.Data display according to statistics, Hangzhou in 2003 amounts to 800,000 yuan because of the stolen loss of road lighting cable, is within 2004
2880000 yuan, it is up to 5,000,000 yuan because of the direct losses that cable is stolen within 2005.The stolen loss caused of cable it is annual with more than
30% degree increase, as one piece of huge worry in the minds of every street lighting administrative staff.
Now commonly used carrier system carries out antitheft, the public lighting circuit of unsuitable common transformer.Because resident uses
Electricity and factory's electricity consumption all wherein, will make it that noise signal is stronger on circuit, false-alarm will be produced when being better than carrier signal
It is raw, referring to accompanying drawing 1；Be not suitable for overlength circuit（The coverage of usual power carrier is 500 meters）Situation.Sometimes section sheet
Body is long（More than 1km）, sodium lamp quantity is more, and compensating electric capacity quantity is corresponding also more, and electric capacity can largely absorb intermediate frequency（
100k-300k ）Carrier signal, and then communication is affected.Broken string alarm during being not suitable for turning off the light.Because electric power is carried
Ripple communication needs end to have electricity to realize break alarm, so the general lithium battery that installs additional can be during turning off the light by lithium electricity
Pond, which powers, completes power carrier communication.But it is due to that service life of lithium battery is generally discharge and recharge 300 times, that is to say, that once a day
Discharge and recharge can only maintain 10 months or so, and then maintenance, maintenance cost and false-alarm quantity will be road lamp management person is difficult to connect
Receive.
The content of the invention
It is an object of the invention to provide the anti-theft detection method of road lighting cable, to overcome the deficiencies in the prior art.
Increase a voltage signal injection circuit and voltage detection electricity present invention resides in the initiating terminal of road lighting cable circuit
Road, in the tail end of a road lighting cable circuit signal conditioning circuit in parallel.
The detection method of the present invention comprises the following steps：Step 1, when road lighting cable is in the case of without pressure, voltage signal is noted
Enter circuit and voltage detection circuit injects a less voltage signal.
Step 2, the tail end of road lighting cable circuit is linked into signal conditioning circuit and constitutes antitheft measure loop.
Step 3, because road lighting cable circuit is in the case of without pressure, the resistance of road lighting cable circuit is infinity, is now prevented
The all-in resistance for existing in measure loop and being made up of the diode resistance in signal conditioning circuit and road lighting cable circuit resistance is stolen,
Diode resistance in signal conditioning circuit is dominant resistance, there is adjustable resistance control in voltage signal injection circuit antitheft
The size of electric current in measure loop.
Step 4, voltage on circuit is detected after initiating terminal injecting voltage signal in real time, when collection voltages are diode voltage
Be multiplied by one be more than 1 coefficient, then cable run be not present failure, when collection voltages for injection voltage in itself, then electricity
There is the phenomenon of open circuit in cable road, now send alarm.There is open circuit in circuit, illustrate there is the possibility that cable is tampered.When adopting
Collecting voltage is zero, now judges that road lighting cable has short circuit, it is necessary to be overhauled.
When the road lighting cable circuit passive state, a small voltage signal is injected, is examined by voltage detection circuit
Survey voltage present in road lighting cable circuit.
When there is operating voltage in the road lighting cable circuit, signal conditioning circuit for open circuit, when cable run without pressure situation,
Signal conditioning circuit line attachment constitutes a weak electrical loop.
It is an advantage of the invention that 1. detection methods are more perfect, there is a situation where that open circuit or short circuit are distinguished for circuit
Send fault alarm.
2. the burglar alarm scheme during turning off the light requires that end need not provide any type of power supply.
3. the voltage for being attached to circuit under normal circumstances is very low, other devices of circuit will not be had any impact.
4. because circuit is simple, easy-to-use, installs and maintenance cost is low.
5. burglar alarm scheme and line status during turning on light（That is line length, lamp-type）It is unrelated.
6. end-equipment and control cabinet headend equipment are provided with a variety of safeguard procedures such as Anti-surging.
Brief description of the drawings
Accompanying drawing 1 is existing carrier wave anti-theft technique schematic diagram.
Accompanying drawing 2 is schematic structural view of the invention.
Accompanying drawing 3 is antitheft detection circuit 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 carried out clear
Chu, it is fully described by.Obviously, described embodiment is only a part of embodiment of the present invention, without.It is whole implementations
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Increase a voltage signal injection circuit 11 and voltage detection present invention resides in the initiating terminal of road lighting cable circuit 1
Circuit 12, in the tail end of road lighting cable circuit 1 signal conditioning circuit 2 in parallel.
Detection method comprises the following steps：
Step 1, when road lighting cable circuit 1 is in the case of without 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 constitutes antitheft measure loop.
Step 3, because road lighting cable circuit 1 is in the case of without pressure, the resistance of road lighting cable circuit 1 is infinity, now
Exist in antitheft measure loop and be made up of the resistance of the diode resistance in signal conditioning circuit 2 and road lighting cable circuit 1
All-in resistance, the diode resistance in signal conditioning circuit 2 is dominant resistance, is existed in voltage signal injection circuit 11 adjustable
Resistance controls the size of electric current in antitheft measure loop.
Step 4, voltage on circuit is detected after initiating terminal injecting voltage signal in real time, when collection voltages are diode voltage
One is multiplied by close to 1 coefficient, then failure is not present in cable run.
When collection voltages for injection voltage in itself, then road lighting cable circuit 1 exist open circuit phenomenon, now send report
It is alert.
There is open circuit in road lighting cable circuit 1, illustrate now there is the possibility that cable is tampered.
When collection voltages are zero, now judge that road lighting cable circuit 1 has short circuit, it is necessary to be overhauled.
When 1 passive state of road lighting cable circuit, a small voltage signal is injected, passes through voltage detection circuit 12
Detect voltage present in road lighting cable circuit 1.
When the road lighting cable circuit 1 has operating voltage, signal conditioning circuit 2 is open circuit, at road lighting cable circuit 1
In without pressure situation, the line attachment of signal conditioning circuit 2 constitutes the antitheft measure loop of a light current.
Claims (4)
1. a kind of anti-theft detection method based on road lighting cable, being included in the initiating terminal of road lighting cable circuit increases a voltage letter
Number injection circuit and voltage detection circuit, in the tail end of a road lighting cable circuit signal conditioning circuit in parallel, it is characterized in that, bag
Include following steps：
Step 1, when road lighting cable circuit is in the case of without pressure, voltage signal injection circuit and voltage detection circuit inject one compared with
Small voltage signal；
Step 2, the tail end of road lighting cable circuit is linked into signal conditioning circuit and constitutes antitheft measure loop；
Step 3, road lighting cable circuit is in the case of without pressure, and the resistance of road lighting cable circuit is infinity, now antitheft to detect back
There is the all-in resistance being made up of the resistance of the diode resistance in signal conditioning circuit and road lighting cable circuit in road, signal is adjusted
The diode resistance managed in circuit is dominant resistance, there is adjustable resistance in voltage signal injection circuit and controls antitheft detect back
The size of electric current in road；
Step 4, voltage on circuit is detected after initiating terminal injecting voltage signal in real time, when collection voltages are multiplied by for diode voltage
One be more than 1 coefficient, then road lighting cable circuit be not present failure, when collection voltages for injection voltage in itself, then road
There is the phenomenon of open circuit in lamp cable run, now send alarm；There is open circuit in road lighting cable circuit, illustrate that there is cable is tampered
Possibility；When collection voltages are zero, now judge that road lighting cable circuit has short circuit, it is necessary to be overhauled.
2. a kind of anti-theft detection method based on road lighting cable according to claim 1, it is characterized in that, when street lamp electricity
During the passive state of cable road, a small voltage signal is injected, detects exist in road lighting cable circuit by voltage detection circuit
Voltage.
3. a kind of anti-theft detection method based on road lighting cable according to claim 2, it is characterized in that, the road lighting cable
When circuit has operating voltage, signal conditioning circuit is open circuit.
4. a kind of anti-theft detection method based on road lighting cable according to claim 2, it is characterized in that, the road lighting cable
Circuit constitutes the antitheft measure loop of a light current without pressure situation, signal conditioning circuit line attachment.
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 CN104700541A (en) | 2015-06-10 |
| CN104700541B true CN104700541B (en) | 2017-08-11 |
Family
ID=53347620
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 |
|---|---|
| CN (1) | CN104700541B (en) |
Families Citing this family (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 |
Family Cites Families (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 |
| CN103426260A (en) * | 2012-05-17 | 2013-12-04 | 上海植晶生物科技有限公司 | Street lamp cable anti-theft system |
| CN102722952B (en) * | 2012-07-04 | 2014-04-02 | 镇江智拓智能科技发展有限公司 | Streetlamp cable anti-theft detection method and streetlamp cable anti-theft detection device |
-
2015
- 2015-03-27 CN CN201510135796.6A patent/CN104700541B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104700541A (en) | 2015-06-10 |
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