CN2886586Y - A device for detecting circuit integrity of lighting cable - Google Patents
A device for detecting circuit integrity of lighting cable Download PDFInfo
- Publication number
- CN2886586Y CN2886586Y CN 200520048322 CN200520048322U CN2886586Y CN 2886586 Y CN2886586 Y CN 2886586Y CN 200520048322 CN200520048322 CN 200520048322 CN 200520048322 U CN200520048322 U CN 200520048322U CN 2886586 Y CN2886586 Y CN 2886586Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- cable
- current
- light
- signal
- 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 - Lifetime
Links
Images
Landscapes
- Alarm Systems (AREA)
Abstract
The utility model discloses a circuit integrity detecting device for an illuminating cable comprising a signal sending unit provided on the terminal of the cable and a centralized control unit provided in the street lamp control cabinet on the head of the cable. The signal sending unit comprises a bilateral switch, an impedance adjuster and a switching circuit, wherein the impedance adjuster and the switching circuit are connected with the cable via the bilateral switch, the switching circuit controls the on and off of the alternating current in the cable and sends a periodic pulse current along the cable. The centralized control unit comprises a no-current detecting circuit, a current-on detecting circuit and a microcontroller, wherein the no-current detecting circuit sends an abnormal level signal when it detects a high-impedance in the cable. The current-on detecting circuit detects the pulse current and the microcontroller is connected with the no-current detecting circuit and the current-on detecting circuit. The microcontroller samples the signal form the no-current detecting circuit when no current in the cable and gives an alarm when the signal is abnormal, and samples and records the pulse frequency of the current-on detecting circuit when the current is on in the cable and gives an alarm when the frequency is lower than a fixed value.
Description
Technical field
The utility model relates to a kind of circuit integrity detection device that is used for the light conduits accident opens circuit or stolen situation is reported to the police.
Background technology
Landscape Lighting, road lighting construction and management as the city image window have also obtained unprecedented great development.City illumination not only makes the city become bright, and more trip in resident's night provides safe, orderly environment.But, expansion day by day along with the street lighting range of control, it is more and more outstanding that the problem of management of city street lamp just becomes, even more serious is the frequent stolen of lighting control equipment and light conduits or damages, cause street lamp bright, this not only influences the view and the traffic in city, returns lawless person's crime favorable environment is provided, and brings a series of public security problem to society.
Therefore,, remind the relevant personnel to keep in repair, can effectively reduce the time that street lamp does not work, reduce the harmful effect that society is brought if can in time open circuit or stolenly make alarm to the light conduits accident.
China No. 200420020826.6 patent disclosures the antitheft monitoring device of power for illumination cable in a kind of illumination monitoring system, its structure comprises an antitheft monitoring device 3 that is located at the impedance regulator 1 of light conduits 2 one ends and is located at light conduits 2 other ends as shown in Figure 1; Impedance regulator 1 is made of a telefault and corresponding protection circuit, and its input end is connected with an end of light conduits; Antitheft monitoring device 3 comprises that an input balancing circuitry 31, an input protection circuit 32, a comparison and output driving circuit 33 and a light are every output circuit 34; The input end of input balancing circuitry 31 is connected with light conduits 2 other ends, output terminal is connected with the input end of output driving circuit 33 with comparison, relatively be connected with the input end of light every output circuit 34 with the output terminal of output driving circuit 33, light is connected with a warning device 4 every the output of output circuit 34.Whether change by the Monitoring Line impedance, reach the stolen purpose of detection line.
The antitheft monitoring device of above-mentioned power for illumination cable can be when illuminating line not be powered detection line whether stolen, though stolen when illuminating line has electricity may be lower, still exist this may.Therefore whether more reliable monitoring is when illuminating line does not have electricity and is can both detection line when electricity is arranged stolen.
Summary of the invention
The utility model provides a kind of light conduits circuit integrity detection device for solving the problems of the technologies described above, whether the detection streamer line does not open circuit when can and not power in the light conduits power supply, when light conduits does not have electricity, adopt the technology of existing detection streamer impedance variation, the technology that detection when the light conduits Alternating Current Power Supply is taked is: the pulse signal that produces certain electric current at light conduits one end at interval, and detecting at the light conduits other end, if repeated detection then can be thought the stolen or unexpected disconnection of this phase cable less than this pulse signal, make alarm.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to provide a kind of light conduits circuit integrity detection device, comprises that the signal transmitting unit and of being located at the cable end is located at the central control unit in the cable head end streetlight control box;
Described signal transmitting unit comprises a two-way switch, an impedance regulator and an on-off circuit, described impedance regulator is connected with cable by described two-way switch with described on-off circuit, described switch makes described impedance regulator be connected in parallel on the cable two ends when cable does not have electricity, and described two-way switch makes described on-off circuit be connected with cable when cable is powered; The alternating current break-make of described on-off circuit umbilical cable line is along cable output one-period property pulse current;
Described central control unit comprises that a no power detection circuit, has a power detection circuit and a microcontroller; Described no power detection circuit sends an abnormal level signal when detecting the cable high impedance, the described recurrent pulses electric current that has power detection circuit to detect described on-off circuit; Described microcontroller and described no power detection circuit with have power detection circuit to be connected, the signal of its described no power detection circuit of sampling when cable does not have electricity is also reported to the police when abnormal signal, it is sampled when cable is powered and writes down the described current impulse number of times that power detection circuit is arranged, and reports to the police when described current impulse number of times is lower than certain value.
Described light conduits circuit integrity detection device, wherein, the two-way switch of described signal transmitting unit is a relay, described relay moving contact is connected with the cable live wire, described impedance regulator is connected between the normally closed contact and cable zero line of described relay, and described on-off circuit output terminal is connected between the normally opened contact and live wire of described relay.
Described light conduits circuit integrity detection device, wherein, the impedance regulator of described signal transmitting unit is a resistance or an inductance.
Described light conduits circuit integrity detection device, wherein, described on-off circuit is made of a single-chip microcomputer and a solid-state relay, described solid-state relay control end is connected with described single-chip microcomputer, described solid-state relay two output terminals are connected with the cable live wire with the normally opened contact of described relay respectively, and its described single-chip microcomputer sends the break-make that one-period property make-and-break signal is controlled described solid-state relay.
Described light conduits circuit integrity detection device, wherein, described central control unit also comprises the decision circuitry whether a detection streamer line powers, described decision circuitry is connected between cable and the described microcontroller.
Described light conduits circuit integrity detection device, wherein, described decision circuitry comprises that a light is every a, diode and one first resistance and one second resistance; Described light is connected with live wire by described first resistance every positive input terminal, and described light is connected with zero line every negative input end, and described light is connected with described microcontroller every output terminal; Described diode reverse is connected in parallel on described light every input end; Described second resistance is connected described light between a positive output end and a power supply.
Described light conduits circuit integrity detection device, wherein, described have power detection circuit to be made of a power device, and described power device comprises:
Transformer circuit, its input end is connected the cable two ends, and its output terminal two ends resistance in parallel is converted to voltage signal with the current pulse signal in the cable;
Adding circuit is made of two divider resistances that are connected between power supply and the ground, and wherein the series connection node of two divider resistances is connected the mutual inductor output plus terminal, and described adding circuit gives described voltage signal stack a constant positive voltage, makes it become DC voltage;
Amplifying circuit, by an amplifier, be connected the stake resistance between described amplifier negative terminal and the ground, the feedback resistance that is connected between described amplifier output terminal and the negative terminal constitutes, described amplifier anode is connected with the series connection node of described adding circuit two divider resistances, described DC voltage is carried out homophase amplify.
Described light conduits circuit integrity detection device, wherein, when cable is powered, the A/D conversion is carried out in the output of described power device, every the results averaged of a setting-up time to described A/D conversion, if the difference of current mean value and mean value last time then detects the primary current pulse greater than a setting value.
Described light conduits circuit integrity detection device, wherein, described central control unit also comprises a warning device, is connected with described microcontroller, described warning device is made of radio transmitter.
Whether the utility model is complete with detection line by the impedance variation on the detection streamer line when cable does not have electricity, the recurrent pulses electric current that when cable has electricity, sends by cable one end by detection, and whether the pulse number that detects in the electric current at the other end come detection line complete, reaches when circuit has electricity and do not have electricity to detect whether the stolen purpose of circuit takes place.
Description of drawings
Below in conjunction with description of drawings embodiment of the present utility model, wherein:
Fig. 1 be China No. 200420020826.6 patent disclosures illumination monitoring system in the antitheft monitoring device structural representation of power for illumination cable;
Fig. 2 is an embodiment of a utility model light conduits circuit integrity detection device connection layout in actual use;
Fig. 3 is the structural representation of an embodiment of the utility model light conduits circuit integrity detection device;
Fig. 4 is the on-off circuit synoptic diagram in the signal transmitting unit of an embodiment of the utility model light conduits circuit integrity detection device;
Fig. 5 is the decision circuitry schematic diagram in the central control unit of an embodiment of the utility model light conduits circuit integrity detection device;
Fig. 6 is the no power detection circuit schematic diagram in the central control unit of an embodiment of the utility model light conduits circuit integrity detection device;
Fig. 7 has a power detection circuit figure in the central control unit of an embodiment of the utility model light conduits circuit integrity detection device.
Embodiment
See also Fig. 2, Fig. 3.The utility model light conduits circuit integrity detection device is made of the signal transmitting unit 10 of being located at the cable end and the central control unit 20 of being located at the cable head end, wherein is provided with a two-way switch 11 in the signal transmitting unit 10 and by the impedance regulator 12 and the on-off circuit 13 of its control.Two-way switch 11 is made of a relay, and relay is powered by cable, and its moving contact is connected with the cable live wire.Impedance regulator 12 is elements that are little impedance when cable does not have electricity, and it can be made of a small resistor or an inductance.Impedance regulator 12 is connected between the normally closed contact and zero line of relay, and when relay did not have electricity, impedance regulator 12 was connected in parallel between the live wire and zero line of cable.As shown in Figure 4, on-off circuit 13 is made of a single-chip microcomputer 131 and a solid-state relay 132, and two input ends of solid-state relay 132 are connected with the cable zero line with the normally opened contact of relay respectively, and solid-state relay 132 control ends are connected with single-chip microcomputer 131.When relay obtains, normally opened contact closure, solid-state relay 132 are connected on the current supply circuit of cable, and single-chip microcomputer 131 sends the break-make of one-period property make-and-break signal control solid-state relay 132, form the recurrent pulses electric current, and transmit to head end along cable.This periodicity make-and-break signal cycle can be several seconds, and has less dutycycle, and in the present embodiment, high level continuity signal is about 70ms.
Be provided with no power detection circuit 21 in the central control unit 20, power detection circuit 22 arranged, decision circuitry 24 and microcontroller 25.See also Fig. 5, decision circuitry 24 mainly is made of every E1 light.Light connects diode V1 and has first resistance R 1 of high impedance every the input end of E1, as holding circuit.Light is every the output plus terminal of E1, and promptly the DETECT end is connected with power supply by one second resistance R 2, and this DETECT end also is connected with microcontroller 25 simultaneously.When in the circuit electricity being arranged, promptly between T line and the N line 220V alternating current is arranged, at the positive half cycle of alternating current, light with conducting, will be low level every E1 on the DETECT end; When not having electricity in the circuit, light every E3 will be not can conducting, will be high level on the DETECT end.Microcontroller 25 is by repeatedly sampling to the DETECT line, if low level is arranged then electricity has been described, otherwise then is not have.
The output terminal of no power detection circuit 21 is connected to microcontroller 25.When circuit does not have electricity, the signal of the no power detection circuit 21 of microcontroller 25 samplings.No power detection circuit 21 circuit diagrams as shown in Figure 6, it mainly is made up of comparer D2A and two loops, a loop is made up of power supply and resistance R 3, R4, a bit is connected to the positive input terminal of comparer D2A in the loop, is used to provide one for relatively reference voltage.Another loop then is made up of power supply, resistance R 5, R6 and circuit to be detected, and circuit live wire to be detected is connected to the negative input end of comparer.In no electro-detection, when circuit was complete, the impedance regulator 12 that is connected in the circuit other end was parallel on the circuit, makes circuit be small resistor, and the voltage of comparer D2A negative terminal is lower than the reference voltage of anode, and comparer D2A exports positive voltage; When circuit because of disconnecting or when stolen and imperfect, impedance regulator 12 disconnects, make circuit be big resistance, the voltage of comparer D2A negative terminal is higher than the reference voltage of anode, comparer D2A exports negative voltage, microcontroller 25 sends warning when detecting this negative voltage, therefore whether detection line is complete thus.
Have the output terminal of power detection circuit 22 to be connected to microcontroller 25, when circuit had electricity, microcontroller 25 samplings and record were by there being the detected pulse of power detection circuit.See also Fig. 7, mainly form by power device 223 by power detection circuit 22.Power device 223 comprises mutual inductor T1, adding circuit Add and amplifying circuit A1, and wherein the input end of mutual inductor T1 is connected the cable two ends, and a mutual inductor T1 output terminal resistance R 13 in parallel is converted to voltage signal with the current signal in the cable; Adding circuit Add is made of two divider resistance R9, the R10 that are connected between power supply and the ground, the series connection node of divider resistance R9, R10 is connected mutual inductor T1 output terminal, give constant positive voltage of output voltage signal stack of mutual inductor T1, make it become DC voltage, negative value promptly do not occur.In the present embodiment, the voltage of a 3V of adding circuit Add stack; Amplifying circuit A1, by an amplifier D3, be connected the stake resistance R11 between amplifier D3 negative terminal and the ground, the feedback resistance R12 that is connected between amplifier D3 output terminal and the negative terminal and constitute, wherein the resistance of R11 and R12 equates, amplifier A1 anode is connected with the series connection node of two divider resistances of adding circuit Add, to amplify carry out homophase through the adding circuit output dc voltage.The output voltage of amplifying circuit A1 is handled for microcontroller.
Have the workflow of electro-detection part as follows:
When in the test line electricity being arranged, the on-off circuit 13 in the signal transmitting unit 10 sends the current pulse signal of one-period, and the total current value in the test line also has the increase of one-period at this moment; When the integrality of circuit is destroyed, just do not have the current pulse signal output of one-period on the signal transmitting unit 10, the total current value in the test line will remain unchanged at this moment.Electric current in the circuit is converted to little voltage signal through mutual inductor T1 with big current signal, is connected to the positive input terminal of amplifier A1 then through adding circuit Add, and the negative input end of amplifier inserts output feedback signal, forms 2 times of amplifiers.Final output signal enters the A/D converter that microcontroller 25 carries.Microcontroller 25 subtracts each other the mean value that records A/D conversion in the setting-up time and last mean value, if difference is greater than 0 then explanation detects the increase of primary current.Consider the fluctuation of electric current, this difference should reach certain numerical value and think that just electric current increases.In the present embodiment, above-mentioned setting-up time is made as 40ms.Microcontroller 25 is noted the number of times that circuit increases, otherwise then the increase that does not detect electric current is described.If circuit is complete, then within a certain period of time, the number of times that electric current increases should reach certain quantity, according to the number of times of record by comparison, if number of times greater than certain quantity test line be kept perfectly, otherwise the integrality of test line is destroyed.
Can be provided with a radio transmitter in the central control unit 20, be connected with microcontroller 25.Microcontroller 25 can and have the situation of electro-detection to send warning through antenna with wireless signal with no electro-detection.Certainly alerting signal microcontroller 25 also can connect other warning devices, for example an audible alarm unit.
Claims (10)
1. a light conduits circuit integrity detection device is characterized in that, comprises that the signal transmitting unit and of being located at the cable end is located at the central control unit in the cable head end streetlight control box;
Described signal transmitting unit comprises a two-way switch, an impedance regulator and an on-off circuit, described impedance regulator is connected with cable by described two-way switch with described on-off circuit, described switch makes described impedance regulator be connected in parallel on the cable two ends when cable does not have electricity, and described two-way switch makes described on-off circuit be connected with cable when cable is powered; The break-make of the alternating current of described on-off circuit umbilical cable line is along cable output one-period property pulse current;
Described central control unit comprises that a no power detection circuit, has a power detection circuit and a microcontroller; Described no power detection circuit sends an abnormal level signal when detecting the cable high impedance, described have power detection circuit to detect described recurrent pulses electric current; Described microcontroller is connected with described no power detection circuit, the signal of described no power detection circuit and reporting to the police when abnormal signal is used for sampling when cable does not have electricity, microcontroller and be connected with power detection circuit is arranged, be used for when cable is powered, sampling and writing down the described current impulse number of times that power detection circuit is arranged, and when described current impulse number of times is lower than certain value, report to the police.
2. light conduits circuit integrity detection device as claimed in claim 1, it is characterized in that, the two-way switch of described signal transmitting unit is a relay, described relay moving contact is connected with the cable live wire, described impedance regulator is connected between the normally closed contact and cable zero line of described relay, and described on-off circuit output terminal is connected between the normally opened contact and live wire of described relay.
3. light conduits circuit integrity detection device as claimed in claim 1 or 2 is characterized in that the impedance regulator of described signal transmitting unit is a resistance or an inductance.
4. light conduits circuit integrity detection device as claimed in claim 1 or 2, it is characterized in that, described on-off circuit is made of a single-chip microcomputer and a solid-state relay, described solid-state relay control end is connected with described single-chip microcomputer, described solid-state relay two output terminals are connected with the cable live wire with the normally opened contact of described relay respectively, and described single-chip microcomputer sends the break-make that one-period property make-and-break signal is controlled described solid-state relay.
5. light conduits circuit integrity detection device as claimed in claim 1 is characterized in that described central control unit also comprises the decision circuitry whether a detection streamer line powers, and described decision circuitry is connected between cable and the described microcontroller.
6. light conduits circuit integrity detection device as claimed in claim 5 is characterized in that, described decision circuitry comprises that a light is every a, diode and one first resistance and one second resistance; Described light is connected with live wire by described first resistance every positive input terminal, and described light is connected with zero line every negative input end, and described light is connected with described microcontroller every output terminal; Described diode reverse is connected in parallel on described light every input end; Described second resistance is connected described light between a positive output end and a power supply.
7. light conduits circuit integrity detection device as claimed in claim 1 is characterized in that described have power detection circuit to be made of a power device, and described power device comprises:
Transformer circuit, its input end is connected the cable two ends, and its output terminal two ends resistance in parallel is converted to voltage signal with the current pulse signal in the cable;
Adding circuit is made of two divider resistances that are connected between power supply and the ground, and wherein the series connection node of two divider resistances is connected the mutual inductor output plus terminal, and described adding circuit gives described voltage signal stack a constant positive voltage, makes it become DC voltage;
Amplifying circuit, by an amplifier, be connected the stake resistance between described amplifier negative terminal and the ground, the feedback resistance that is connected between described amplifier output terminal and the negative terminal constitutes, described amplifier anode is connected with the series connection node of described adding circuit two divider resistances, described DC voltage is carried out homophase amplify.
8. light conduits circuit integrity detection device according to claim 1, it is characterized in that, when cable is powered, the A/D conversion is carried out in the output of described power device, every the results averaged of a setting-up time to described A/D conversion, if the difference of current mean value and mean value last time then detects the primary current pulse greater than a setting value.
9. light conduits circuit integrity detection device according to claim 1 is characterized in that described central control unit also comprises a warning device, is connected with described microcontroller.
10. as light conduits circuit integrity detection device as described in the claim 9, it is characterized in that described warning device is made of radio transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520048322 CN2886586Y (en) | 2005-12-30 | 2005-12-30 | A device for detecting circuit integrity of lighting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520048322 CN2886586Y (en) | 2005-12-30 | 2005-12-30 | A device for detecting circuit integrity of lighting cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2886586Y true CN2886586Y (en) | 2007-04-04 |
Family
ID=37961675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520048322 Expired - Lifetime CN2886586Y (en) | 2005-12-30 | 2005-12-30 | A device for detecting circuit integrity of lighting cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2886586Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603995B (en) * | 2008-06-13 | 2011-04-20 | 北京诺斯卡科技有限公司 | Station user identification apparatus |
| CN101290338B (en) * | 2007-04-20 | 2011-06-15 | 株式会社东芝 | Test system and test method for control cable |
| CN102928737A (en) * | 2012-11-01 | 2013-02-13 | 航天科工深圳（集团）有限公司 | Fault detection system and method |
| CN107015118A (en) * | 2017-05-05 | 2017-08-04 | 广东正力通用电气有限公司 | A kind of supply lines break monitoring system and method |
| CN107064716A (en) * | 2017-05-05 | 2017-08-18 | 广东正力通用电气有限公司 | A kind of power transmission line break monitoring system and method |
-
2005
- 2005-12-30 CN CN 200520048322 patent/CN2886586Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290338B (en) * | 2007-04-20 | 2011-06-15 | 株式会社东芝 | Test system and test method for control cable |
| CN101603995B (en) * | 2008-06-13 | 2011-04-20 | 北京诺斯卡科技有限公司 | Station user identification apparatus |
| CN102928737A (en) * | 2012-11-01 | 2013-02-13 | 航天科工深圳（集团）有限公司 | Fault detection system and method |
| CN107015118A (en) * | 2017-05-05 | 2017-08-04 | 广东正力通用电气有限公司 | A kind of supply lines break monitoring system and method |
| CN107064716A (en) * | 2017-05-05 | 2017-08-18 | 广东正力通用电气有限公司 | A kind of power transmission line break monitoring system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2886586Y (en) | A device for detecting circuit integrity of lighting cable | |
| CN102436710B (en) | Anti-theft alarm method for street lamp cable with self-checking function | |
| CN202694483U (en) | Street lamp cable antitheft detection device | |
| CN201029042Y (en) | Anti-theft alarm device for power transformer | |
| CN201867910U (en) | Streetlight cable anti-theft system | |
| CN2924662Y (en) | Passive-based dual-state auto-switching anti-theft alarm circuit | |
| CN105741468A (en) | Cable antitheft alarm system and method | |
| CN208077350U (en) | Cable theft-prevention circuit, cable theft-prevention equipment and road lamp system | |
| CN202142141U (en) | Controller of cable monitoring terminal | |
| CN104269008B (en) | Anti-theft alarm system of street lamp cable | |
| CN1880965B (en) | Power transmission line break monitoring and alarming device | |
| CN101937600B (en) | Anti-theft alarm system for street lamp cable | |
| CN205068662U (en) | Cable anti -theft system | |
| CN105118214A (en) | Cable antitheft system and corresponding cable antitheft method | |
| CN111579602A (en) | Intelligent monitor for cabinet | |
| CN1290379C (en) | Single-lamp monitoring system for street lamp | |
| CN201017417Y (en) | Power cable anti-theft alarm device | |
| CN204215511U (en) | Anti-theft alarm system for street | |
| CN105551160A (en) | Antitheft and alarm system of cable | |
| CN205283253U (en) | Paper record appearance is not had in alternating voltage remote monitoring | |
| CN206149563U (en) | Take earth leakage protection's urban illumination intelligent control terminal | |
| CN210072858U (en) | Intelligence street lamp cable theftproof monitor terminal | |
| CN201364626Y (en) | Theftproof alarming terminal for electric power facility | |
| CN202494709U (en) | Controller for preventing electricity stealing | |
| CN2807270Y (en) | Power transmission line broken circuit monitoring alarm device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070404 |
|
| EXPY | Termination of patent right or utility model |