CN103647251A - A vehicle-mounted power supply security control apparatus and a control method - Google Patents
A vehicle-mounted power supply security control apparatus and a control method Download PDFInfo
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- CN103647251A CN103647251A CN201310599593.3A CN201310599593A CN103647251A CN 103647251 A CN103647251 A CN 103647251A CN 201310599593 A CN201310599593 A CN 201310599593A CN 103647251 A CN103647251 A CN 103647251A
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Abstract
A vehicle-mounted power supply security control apparatus comprises a drain voltage protector, an alternating current contactor and a security circuit board. The drain voltage protector is connected between a commercial electric supply and a main normally open contact of the alternating current contactor. The drain voltage protector is connected between the commercial electric supply and the security circuit board. A coil of the alternating current contactor is connected between the main normally open contact of the alternating current contactor and the security circuit board. The other end of the main normally open contact of the alternating current contactor is connected to a load. The invention also comprises a vehicle-mounted power supply security control method. The vehicle-mounted power supply security control apparatus is convenient to install, is safe and reliable, and is stable in operation.
Description
Technical field
The present invention relates to power supply security personnel control field, particularly relate to power supply safety control device and the control method of the vehicles such as a kind of communication van.
Background technology
Communication van power supply wall box is provided with the power-off protection functions such as overvoltage, drain voltage; existing method is when power supply safety circuit plate detects overvoltage or drain voltage signal; in security board, relay is connected; the live wire of the zero line of earth leakage protective device input and output is connected by a resistance; the artificial leakage current signal of manufacturing earth leakage protective device; drive master switch trip protection, yet there is for example security board power supply circuits fault in the method, occurs the problems such as overvoltage, drain voltage protector do not trip.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the above-mentioned defect that prior art exists, and provides a kind of installation convenient, safe and reliable, stable vehicle power safety control device and control method.
The present invention's vehicle power safety control device solves the technical scheme that its technical problem adopts: a kind of vehicle power safety control device; comprise drain voltage protector, A.C. contactor and safety circuit plate; described drain voltage protector is connected between the main normally opened contact of civil power and A.C. contactor; described drain voltage protector is also connected between civil power and safety circuit plate; the coil of described A.C. contactor is connected between the main normally opened contact and safety circuit plate of A.C. contactor, and the main normally opened contact other end of described A.C. contactor connects load.
Further, described safety circuit plate comprises mainboard and debugging board, and described mainboard comprises microprocessor and the supply module being connected with microprocessor, overvoltage detection module, overcurrent detection module, drain voltage detection module, leakage current test module, debugging board interface module, alarm module, signal designation module and relay switch.
Further, described supply module comprises transformer and voltage stabilizing chip.
Further, the live wire of described drain voltage protector one end is connected civil power with zero line, and the live wire of the other end is connected the elementary of described transformer with zero line, the input of the described voltage stabilizing chip of secondary connection of described transformer.
Further, output one end of described relay switch connects the live wire of drain voltage protector, and the other end connects coil one end of A.C. contactor, and the coil other end of A.C. contactor connects the zero line of the main normally opened contact of A.C. contactor.
Further, output one end of described relay switch connects the live wire of drain voltage protector, and the other end connects coil one end of A.C. contactor, and the coil other end of A.C. contactor connects the zero line of the main normally opened contact of A.C. contactor.
Further, described debugging board connects the debugging board interface module of mainboard, mainboard is carried out to overvoltage/undervoltage, overcurrent, imperfect earth, drain voltage, the setting of leakage current and debugging.
Further, described signal designation module is signal lamp.
The present invention's vehicle power security personnel control method solves the technical scheme that its technical problem adopts: a kind of vehicle power security personnel control method, comprises the steps:
1) by supply module, to microprocessor, overvoltage detection module, overcurrent detection module, drain voltage detection module, leakage current test module, debugging board interface module, alarm module, signal designation module and relay switch, provide power supply;
2) by overvoltage detection module, overcurrent detection module, drain voltage detection module, leakage current test module, detect in real time vehicle-mounted device power supply (DPS) overvoltage or drain voltage situation;
3) by button, the overvoltage of mobile unit power supply and drain voltage threshold value are set;
4) the current overvoltage detection module of microprocessor Real-time Collection, overcurrent detection module, drain voltage detection module, leakage current test module output signal, and with threshold value comparison, when finding mobile unit power supply overvoltage or drain voltage situation, cut off immediately mobile unit power supply, alarm module is reported to the police, and plays security personnel's effect;
5), after mobile unit power supply is stable, microprocessor detects current circuit when normal, automatically connects A.C. contactor, power supply to the device, alarm module stop alarm.
Further, drain voltage protector also can automatically disconnect when equipment generation leak current fault, for mobile unit power supply provides double protection functions.
Further, described drain voltage protector, for overload and the short circuit of protection circuit when mobile unit generation leak current fault or power consumption equipment, also can be used as the not frequent starting switch of circuit;
Described overvoltage detection module is for detecting into electric line voltage in real time;
Described overcurrent detection module is for detecting into electric line electric current in real time;
Described drain voltage detection module is for detecting in real time current line electrical leakage voltage;
Described leakage current test module is for detecting in real time current line electrical leakage electric current;
Described A.C. contactor is used for being switched on or switched off civil power and is connected with load;
Described relay switch is used for controlling the coil break-make of A.C. contactor, when relay switch cuts out, and the coil electricity of A.C. contactor, the main normally opened contact of A.C. contactor is closed, and civil power and load are connected.Otherwise the main normally opened contact of A.C. contactor disconnects, and civil power and load disconnect;
Described microprocessor is by reading in real time overvoltage detection module, overcurrent detection module, drain voltage detection module, leakage current test module output signal, and with threshold value comparison, when circuit being detected and occur overvoltage or drain voltage phenomenon, relay switch immediately;
Described alarm module is used for occurring after overvoltage or drain voltage when microprocessor detects circuit, alarm user.
The present invention compared with prior art has following features:
1. adopt A.C. contactor as the performer of overvoltage, drain voltage signal protection, separate with the current mode earth leakage protective of drain voltage protector, signal designation is clear, is convenient to analytic signal source.
2. the coil of A.C. contactor is controlled by safety circuit plate, and under the prerequisite of the normal work of safety circuit plate, mainboard could be powered, more safe and reliable.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is mainboard block diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1
See figures.1.and.2, the present embodiment comprises drain voltage protector QF, A.C. contactor KM and safety circuit plate; Safety circuit plate comprises mainboard PBA1 and debugging board PBA2, and mainboard PBA1 comprises microprocessor P1 and the supply module P2 being connected with microprocessor P1, overvoltage detection module P3, overcurrent detection module P4, drain voltage detection module P5, leakage current test module P6, debugging board interface module P7, alarm module P8, signal designation module P9 and relay switch P10; Supply module P1 comprises transformer T and voltage stabilizing chip; The live wire L of drain voltage protector QF one end is connected civil power with zero line N, elementary 1 end and 2 ends of the live wire L of the other end and zero line N connection transformer T, and secondary 3 ends of transformer T are connected input W1 and the W2 of voltage stabilizing chip with 4 ends; In addition, the live wire L of drain voltage protector QF one end is connected civil power with zero line N, and the live wire L of the other end is connected main normally opened contact 1 end and 3 ends of A.C. contactor KM with zero line N, and main normally opened contact 2 ends of A.C. contactor KM are connected load with 4 ends; The output W5 of relay switch P10 connects the live wire L of drain voltage protector QF, and W6 connects the loop A 2 of A.C. contactor KM, and the loop A 1 of A.C. contactor KM connects the zero line N of the main normally opened contact of A.C. contactor KM, i.e. 3 ends of main normally opened contact.
Debugging board PBA2 connects the debugging board interface module P7 of mainboard PBA1, mainboard PBA1 is carried out to overvoltage/undervoltage, overcurrent, imperfect earth, drain voltage, the setting of leakage current and debugging.
Signal designation module P9 is signal lamp HA, for signal designation, is convenient to analytic signal source.
After access civil power; power supply is after drain voltage protector QF; the input W1 of the voltage stabilizing chip of mainboard PBA1 and W2 obtain the operating voltage that converts mainboard PBA1 after electric to; the output W5 of relay switch P10 in safety circuit plate and W6 connect output signal makes the loop A 1 of A.C. contactor KM and A2 obtain electric adhesive; its main normally opened contact is connected, out-put supply.When mainboard PBA1 detects overvoltage or drain voltage signal; the output W5 of relay switch P10 in mainboard PBA1 and W6 disconnect, and the loop A 1 of A.C. contactor KM and A2 dead electricity are discharged, and its main normally opened contact disconnects protection; the output of cutting off the electricity supply, the security personnel that realized power supply control.
Embodiment 2
A vehicle power security personnel control method, comprises the steps:
1) by supply module P2 to microprocessor P1, overvoltage detection module P3, overcurrent detection module P4,
Drain voltage detection module P5, leakage current test module P6, debugging board interface module P7, alarm module P8, signal designation module P9 and relay switch P10 provide power supply;
2) by overvoltage detection module P3, overcurrent detection module P4, drain voltage detection module P5, leakage current test module P6, detect in real time vehicle-mounted device power supply (DPS) overvoltage or drain voltage situation;
3) by button, the overvoltage of mobile unit power supply and drain voltage threshold value are set;
4) the current overvoltage detection module of microprocessor P1 Real-time Collection P3, overcurrent detection module P4, drain voltage detection module P5, leakage current test module P6 output signal, and with threshold value comparison, when finding mobile unit power supply overvoltage or drain voltage situation, cut off immediately mobile unit power supply, alarm module P8 reports to the police, and plays security personnel's effect;
5), after mobile unit power supply is stable, microprocessor P1 detects current circuit when normal, automatically connects A.C. contactor KM, power supply to the device, alarm module P8 stop alarm.
Drain voltage protector QF also can automatically disconnect when equipment generation leak current fault, for mobile unit power supply provides double protection functions.
Drain voltage protector QF, for overload and the short circuit of protection circuit when mobile unit generation leak current fault or power consumption equipment, also can be used as the not frequent starting switch of circuit;
Overvoltage detection module P3 is for detecting into electric line voltage in real time;
Overcurrent detection module P4 is for detecting into electric line electric current in real time;
Drain voltage detection module P5 is for detecting in real time current line electrical leakage voltage;
Leakage current test module P6 is for detecting in real time current line electrical leakage electric current;
A.C. contactor KM is used for being switched on or switched off civil power and is connected with load;
Relay switch P10 is used for controlling the coil break-make of A.C. contactor KM, when relay switch P10 closes, and the coil electricity of A.C. contactor KM, the main normally opened contact of A.C. contactor KM is closed, and civil power and load are connected.Otherwise the main normally opened contact of A.C. contactor KM disconnects, and civil power and load disconnect;
Microprocessor P1 is by reading in real time overvoltage detection module P3, overcurrent detection module P4, drain voltage detection module P5, leakage current test module P6 output signal, and with threshold value comparison, when circuit being detected and occur overvoltage or drain voltage phenomenon, relay switch P10 immediately;
Alarm module P8 is used for occurring after overvoltage or drain voltage when microprocessor P1 detects circuit, alarm user.
Claims (10)
1. a vehicle power safety control device; it is characterized in that; comprise drain voltage protector, A.C. contactor and safety circuit plate; described drain voltage protector is connected between the main normally opened contact of civil power and A.C. contactor; described drain voltage protector is also connected between civil power and safety circuit plate; the coil of described A.C. contactor is connected between the main normally opened contact and safety circuit plate of A.C. contactor, and the main normally opened contact other end of described A.C. contactor connects load.
2. vehicle power safety control device as claimed in claim 1, it is characterized in that, described safety circuit plate comprises mainboard and debugging board, and described mainboard comprises microprocessor and the supply module being connected with microprocessor, overvoltage detection module, overcurrent detection module, drain voltage detection module, leakage current test module, debugging board interface module, alarm module, signal designation module and relay switch.
3. vehicle power safety control device as claimed in claim 2, is characterized in that, described supply module comprises transformer and voltage stabilizing chip.
4. vehicle power safety control device as claimed in claim 3; it is characterized in that; the live wire of described drain voltage protector one end is connected civil power with zero line, and the live wire of the other end is connected the elementary of described transformer with zero line, the input of the described voltage stabilizing chip of secondary connection of described transformer.
5. vehicle power safety control device as claimed in claim 2 or claim 3; it is characterized in that; output one end of described relay switch connects the live wire of drain voltage protector; the other end connects coil one end of A.C. contactor, and the coil other end of A.C. contactor connects the zero line of the main normally opened contact of A.C. contactor.
6. vehicle power safety control device as claimed in claim 4; it is characterized in that; output one end of described relay switch connects the live wire of drain voltage protector; the other end connects coil one end of A.C. contactor, and the coil other end of A.C. contactor connects the zero line of the main normally opened contact of A.C. contactor.
7. vehicle power safety control device as claimed in claim 2 or claim 3, is characterized in that, described debugging board connects the debugging board interface module of mainboard, mainboard is carried out to overvoltage/undervoltage, overcurrent, imperfect earth, drain voltage, the setting of leakage current and debugging.
8. vehicle power safety control device as claimed in claim 2 or claim 3, is characterized in that, described signal designation module is signal lamp.
9. a vehicle power security personnel control method, is characterized in that, comprises the steps:
1) by supply module, to microprocessor, overvoltage detection module, overcurrent detection module, drain voltage detection module, leakage current test module, debugging board interface module, alarm module, signal designation module and relay switch, provide power supply;
2) by overvoltage detection module, overcurrent detection module, drain voltage detection module, leakage current test module, detect in real time vehicle-mounted device power supply (DPS) overvoltage or drain voltage situation;
3) by button, the overvoltage of mobile unit power supply and drain voltage threshold value are set;
4) the current overvoltage detection module of microprocessor Real-time Collection, overcurrent detection module, drain voltage detection module, leakage current test module output signal, and with threshold value comparison, when finding mobile unit power supply overvoltage or drain voltage situation, cut off immediately mobile unit power supply, alarm module is reported to the police, and plays security personnel's effect;
5), after mobile unit power supply is stable, microprocessor detects current circuit when normal, automatically connects A.C. contactor, power supply to the device, alarm module stop alarm.
10. vehicle power security personnel control method as claimed in claim 9, is characterized in that, drain voltage protector also can automatically disconnect when equipment generation leak current fault, for mobile unit power supply provides double protection functions.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310599593.3A CN103647251B (en) | 2013-11-25 | 2013-11-25 | A kind of vehicle power supply safety control device and control method |
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| CN201310599593.3A CN103647251B (en) | 2013-11-25 | 2013-11-25 | A kind of vehicle power supply safety control device and control method |
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| CN103647251A true CN103647251A (en) | 2014-03-19 |
| CN103647251B CN103647251B (en) | 2018-11-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909891A (en) * | 2020-10-15 | 2021-06-04 | 广东骉马机器人科技有限公司 | Leakage protection system and method |
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| CN202102075U (en) * | 2011-06-10 | 2012-01-04 | 衡阳泰豪通信车辆有限公司 | Numerically-controlled power supply security board |
| CN202872701U (en) * | 2012-10-09 | 2013-04-10 | 湖南吉利汽车部件有限公司 | Control device for three-phase alternating-current motors |
| CN203251136U (en) * | 2013-04-16 | 2013-10-23 | 重庆南方迪马专用车股份有限公司 | Vehicle-mounted integrated power supply |
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2013
- 2013-11-25 CN CN201310599593.3A patent/CN103647251B/en active Active
Patent Citations (4)
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| CN202102075U (en) * | 2011-06-10 | 2012-01-04 | 衡阳泰豪通信车辆有限公司 | Numerically-controlled power supply security board |
| CN202872701U (en) * | 2012-10-09 | 2013-04-10 | 湖南吉利汽车部件有限公司 | Control device for three-phase alternating-current motors |
| CN203251136U (en) * | 2013-04-16 | 2013-10-23 | 重庆南方迪马专用车股份有限公司 | Vehicle-mounted integrated power supply |
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Cited By (1)
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| CN112909891A (en) * | 2020-10-15 | 2021-06-04 | 广东骉马机器人科技有限公司 | Leakage protection system and method |
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Effective date of registration: 20190411 Address after: 421000 No. 46 Furong Road, Hengyang High-tech Zone, Hunan Province Co-patentee after: Beijing mechanical and electrical engineering general design department Patentee after: Hengyang Tellhow Communications Voiture Co., Ltd. Address before: 421001 No. 46 Furong Road, Hengyang High-tech Industrial Development Zone, Hunan Province Patentee before: Hengyang Tellhow Communications Voiture Co., Ltd. |