CN103457321A - Vehicle equipment power-off time delay protection device based on super capacitor - Google Patents
Vehicle equipment power-off time delay protection device based on super capacitor Download PDFInfo
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- CN103457321A CN103457321A CN2013103861510A CN201310386151A CN103457321A CN 103457321 A CN103457321 A CN 103457321A CN 2013103861510 A CN2013103861510 A CN 2013103861510A CN 201310386151 A CN201310386151 A CN 201310386151A CN 103457321 A CN103457321 A CN 103457321A
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Abstract
The invention relates to vehicle equipment power-off time delay protection device based on a super capacitor. The protection device is connected with vehicle equipment and a vehicle power supply system and comprises a super capacitor charging circuit, a super capacitor discharging circuit and a charging and discharging control circuit, wherein the charging and discharging control circuit is connected with the super capacitor charging circuit and the super capacitor discharging circuit, the voltage input end of the super capacitor charging circuit is connected with the vehicle power supply system, and the voltage output end of the super capacitor discharging circuit and the working state output end of the charging and discharging control circuit are both connected with the vehicle equipment. Compared with the prior art, the vehicle equipment power-off time delay protection device based on the super capacitor has the advantage of being safe, reliable, environmentally friendly, efficient, convenient to maintain, wide in application range and the like.
Description
Technical field
The present invention relates to a kind of time-delay protection circuit for circuit breaking, especially relate to a kind of used for vehicle-carrying equipment power cut off delay protective device based on super capacitor.
Background technology
Rail transportation vehicle-mounted equipment generally is under rugged environment condition and electric condition works, and therefore, must consider in locomotive the impact that complex environment causes electric equipment when designing car loading system equipment.Rail transit train monitoring system is Vehicular video monitoring system, and it mainly consists of compunication kind equipments such as video server and system hosts.When these equipment meet with instant cut-off, hard-disk system can make the magnetic head friction disc because drive motors is short of power, and gets off for a long time and will cause the physical damage of magnetic track.And the data in instant cut-off computer-chronograph internal memory are dynamic refresh in time, the program of moving and the data of transmission can cause program crash and loss of data owing to being forced to interruption, bring loss.
Provide equipment protection for avoiding above problem, generally understand in taking into account system to increase UPS (uninterrupted power supply).Ups system is to consist of storage battery and power inverter change-over circuit.General ups system is not suitable for the mobile unit protection, below does concrete analysis.Play a decisive role in initial several seconds to a few minutes of train outage, need storage battery that electric energy is provided during this period of time, the shortcoming of storage battery self (need periodic maintenance, life-span short) makes UPS need to constantly detect the state of storage battery when operation.In computer system, the time that needs UPS to provide is relatively very short, and most of energy of storage battery is not employed, if select the storage battery of low capacity do not possess powerful discharge capability.The more important thing is that storage battery is to having relatively high expectations of safeguarding, useful life is shorter.
Summary of the invention
Purpose of the present invention is exactly that a kind of safe and reliable, environment-friendly high-efficiency, the used for vehicle-carrying equipment power cut off delay protective device based on super capacitor non-maintaining, applied widely are provided in order to overcome the defect that above-mentioned prior art exists.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of used for vehicle-carrying equipment power cut off delay protective device based on super capacitor, this protective device respectively with mobile unit, the vehicle electric power system connects, it is characterized in that, described protective device comprises the super capacitor charging circuit, super capacitor discharge circuit and charge-discharge control circuit, described charge-discharge control circuit respectively with the super capacitor charging circuit, the super capacitor discharge circuit connects, described super capacitor charging circuit voltage input end is connected with the vehicle electric power system, super capacitor discharge circuit voltage output end, the working state output terminal of charge-discharge control circuit is connected with mobile unit respectively.This protective device specifically comprises the voltage input end mouth, the operating state port, the Voltage-output port, triode D1, diode D2, resistance R 1, resistance R 2, the super capacitor group, triode D3 and relay J 1, described voltage input end mouth positive pole respectively with operating state port positive pole, the collector electrode of triode D1 connects, the base stage of described triode respectively with resistance R 2, diode D2 negative pole, relay connects, described resistance R 2 other ends are connected with the super capacitor group is anodal, described diode D2 is anodal to be connected with the base stage of triode D3 by resistance R 1, the collector electrode of described triode D3 is connected with relay, described relay is connected with the Voltage-output port is anodal, described voltage input end mouth negative pole, super capacitor group negative pole, the emitter of triode D3, operating state port negative pole, the equal ground connection of Voltage-output port negative pole.
Described triode D1 is formed by the first diode and the second diodes in reverse series, the first diode cathode is connected with the voltage input end mouth is anodal, the first diode cathode is connected with the second diode cathode, resistance R 2 one ends, diode D2 negative pole respectively, and described the second diode cathode is connected with the super capacitor group is anodal.
Described super capacitor group is connected in series successively by a plurality of super capacitors.
The capacity of described super capacitor group determines according to the electric state data of mobile unit, is specially:
C＝((Vwork+Vmin)×I×t)/(Vwork
2-Vmin
2)
The capacity that wherein C is the super capacitor group, Vwork is the mobile unit normal working voltage, and Vmin is mobile unit cut-off operating voltage, and I is the mobile unit running current, and t is the delay working time.
Compared with prior art, the present invention has the following advantages:
1, the super capacitor equipment of the present invention design is applied on rail transportation vehicle-mounted equipment, with the UPS equipment of traditional storage battery formula, compares, and it has safe and reliable, environment-friendly high-efficiency, the advantage such as easy to maintenance:
(1) super capacitor has very high power density, with traditional capacitor, with battery, compares, and the ability of its capacitor stores electric charge is high, and charging rate is fast, and service efficiency is high, safe and reliable;
(2) quality of super capacitor and small volume, service life cycle reaches 500000 times, is adapted at applying in the severe rail traffic vehicles of electric circumstance;
(3) material that the super capacitor ultracapacitor is used is safe, nontoxic, environmental protection, and non-maintaining.And storage battery needs often to safeguard, discarded storage battery brings very large harm to environment.
2, the present invention is applied on rail traffic vehicles, and the function of delay switching-off can be provided for Vehicular video monitoring system equipment, thereby protection equipment increases system reliability; After mobile unit powers on, super capacitor enters charged state, can export normal voltage for mobile unit simultaneously, and the whole charging process duration is not long, and power consumption is also very low, to rear end equipment, can not impact; When momentary power failure, mobile unit can directly not quit work, because, in the present invention, super capacitor enters discharge condition, the mobile unit input voltage can be slowly reduction, until voltage is less than operating voltage and quits work, extend shutdown during this period of time in can guarantee that device interior completes read-write operation and obliterated data not.
3, applied widely, the capacity of super capacitor of the present invention can be increased according to the electric state of mobile unit or reduce to be got final product.
The accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is physical circuit figure of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1; a kind of used for vehicle-carrying equipment power cut off delay protective device based on super capacitor; this protective device 1 is connected with mobile unit 2; described protective device 1 comprises super capacitor charging circuit 11, super capacitor discharge circuit 12 and charge-discharge control circuit 13; described charge-discharge control circuit divides 13 not to be connected with super capacitor charging circuit 11, super capacitor discharge circuit 12, and described super capacitor charging circuit 11 inputs, super capacitor discharge circuit output 12, charge-discharge control circuit 13 test sides are connected with mobile unit respectively.
As shown in Figure 2, physical circuit of the present invention comprises the voltage input end mouth, the operating state port, the Voltage-output port, triode D1, diode D2, resistance R 1, resistance R 2, the super capacitor group, triode D3 and relay J 1, described voltage input end mouth positive pole respectively with operating state port positive pole, the collector electrode of triode D1 connects, the base stage of described triode respectively with resistance R 2, diode D2 negative pole, relay connects, described resistance R 2 other ends are connected with the super capacitor group is anodal, described diode D2 is anodal to be connected with the base stage of triode D3 by resistance R 1, the collector electrode of described triode D3 is connected with relay, described relay is connected with the Voltage-output port is anodal, described voltage input end mouth negative pole, super capacitor group negative pole, the emitter of triode D3, operating state port negative pole, the equal ground connection of Voltage-output port negative pole.
Described triode D1 is formed by the first diode and the second diodes in reverse series, the first diode cathode is connected with the voltage input end mouth is anodal, the first diode cathode is connected with the second diode cathode, resistance R 2 one ends, diode D2 negative pole respectively, and described the second diode cathode is connected with the super capacitor group is anodal.
Described super capacitor group is connected in series successively by a plurality of super capacitors.
The capacity of described super capacitor group determines according to the electric state data of mobile unit, is specially:
C＝((Vwork+Vmin)×I×t)/(Vwork
2-Vmin
2)
The capacity that wherein C is the super capacitor group, Vwork is the mobile unit normal working voltage, and Vmin is mobile unit cut-off operating voltage, and I is the mobile unit running current, and t is the delay working time.
In vehicle monitoring system, mobile unit normal working voltage Vwork=DC12V, the minimum voltage Vmin=7V of work, running current is I=2.5A, delay working time t=14S, according to the computing formula C=((Vwork+Vmin) * I * t) of super capacitor capacity/(Vwork
2-Vmin
2) calculate, obtain C=7F, required super capacitor capacity is 7F.
Secondly, carry out circuit design.The rated voltage of single super capacitor is 2.5V～2.7V, and therefore, concrete application will meet by a plurality of super capacitor units in series the demand of voltage.The actual total capacity of super capacitor used is 7 farads, and voltage is 12V, therefore, can be with 5 2.5V, the super capacitor series connection use of 35F is to meet the demands.
Make a concrete analysis of the course of work of delay circuit by Fig. 2.Wherein, port definition is as follows:
X1 (DC IN): delay circuit voltage input end mouth.
X2 (KEY OUT): delay circuit operating state port.
X3 (DC OUT): the Voltage-output port of delay circuit.
At first, power on rear X1 end and X2 end have Voltage-output, and electric current is to the super capacitor charging after 1 pin of resistance R 2 and triode D1,2 pin, and simultaneously, electric current arrives triode D3 after diode D2 and resistance R 1.As shown in Figure 2, the base stage of triode D3 is high level, and triode D3 conducting drives relay J 1 to open.Now, X3 terminal output voltage.Super capacitor can complete charging process in tens of seconds.
When instant cut-off, X1 and X3 terminal no-output become the super capacitor discharge process this moment.Super capacitor electric discharge, as shown in Figure 2, discharging current is after 3 pin of triode D1,2 pin, through diode D2 and resistance R 1 to triode D3.Now, the base stage of triode D3 is still high level, and triode D3 conducting drives relay J 1 to open, and the X3 terminal is output voltage still.But, along with the electric discharge of super capacitor, voltage reduces gradually, when reaching 7V, diode D2 oppositely ends, and triode D3 base stage is low level, and triode D3 cut-off is closed relay J 1.Now, X3 terminal no-output.By the time of time delay, protecting mobile unit normally to complete data stores and shuts down and move.
Claims (5)
1. the used for vehicle-carrying equipment power cut off delay protective device based on super capacitor, this protective device respectively with mobile unit, the vehicle electric power system connects, it is characterized in that, described protective device comprises the super capacitor charging circuit, super capacitor discharge circuit and charge-discharge control circuit, described charge-discharge control circuit respectively with the super capacitor charging circuit, the super capacitor discharge circuit connects, described super capacitor charging circuit voltage input end is connected with the vehicle electric power system, super capacitor discharge circuit voltage output end, the working state output terminal of charge-discharge control circuit is connected with mobile unit respectively.
2. a kind of used for vehicle-carrying equipment power cut off delay protective device based on super capacitor according to claim 1, it is characterized in that, this protective device specifically comprises the voltage input end mouth, the operating state port, the Voltage-output port, triode D1, diode D2, resistance R 1, resistance R 2, the super capacitor group, triode D3 and relay J 1, described voltage input end mouth positive pole respectively with operating state port positive pole, the collector electrode of triode D1 connects, the base stage of described triode respectively with resistance R 2, diode D2 negative pole, relay connects, described resistance R 2 other ends are connected with the super capacitor group is anodal, described diode D2 is anodal to be connected with the base stage of triode D3 by resistance R 1, the collector electrode of described triode D3 is connected with relay, described relay is connected with the Voltage-output port is anodal, described voltage input end mouth negative pole, super capacitor group negative pole, the emitter of triode D3, operating state port negative pole, the equal ground connection of Voltage-output port negative pole.
3. a kind of used for vehicle-carrying equipment power cut off delay protective device based on super capacitor according to claim 2; it is characterized in that; described triode D1 is formed by the first diode and the second diodes in reverse series; the first diode cathode is connected with the voltage input end mouth is anodal; the first diode cathode is connected with the second diode cathode, resistance R 2 one ends, diode D2 negative pole respectively, and described the second diode cathode is connected with the super capacitor group is anodal.
4. a kind of used for vehicle-carrying equipment power cut off delay protective device based on super capacitor according to claim 2, is characterized in that, described super capacitor group is connected in series successively by a plurality of super capacitors.
5. a kind of used for vehicle-carrying equipment power cut off delay protective device based on super capacitor according to claim 4, is characterized in that, the capacity of described super capacitor group determines according to the electric state data of mobile unit, is specially:
C＝((Vwork+Vmin)×I×t)/(Vwork
2-Vmin
2)
The capacity that wherein C is the super capacitor group, Vwork is the mobile unit normal working voltage, and Vmin is mobile unit cut-off operating voltage, and I is the mobile unit running current, and t is the delay working time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310386151.0A CN103457321B (en) | 2013-08-29 | 2013-08-29 | Vehicle equipment power-off time delay protection device based on super capacitor |
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|---|---|---|---|
| CN201310386151.0A CN103457321B (en) | 2013-08-29 | 2013-08-29 | Vehicle equipment power-off time delay protection device based on super capacitor |
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| CN103457321B CN103457321B (en) | 2015-06-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391152A (en) * | 2015-12-23 | 2016-03-09 | 无锡江南计算技术研究所 | Backup direct-current high voltage power supply for super capacitor |
| WO2020087270A1 (en) * | 2018-10-30 | 2020-05-07 | 深圳市锐明技术股份有限公司 | Power failure protection circuit, apparatus and system used for vehicle-mounted device |
| CN111380495A (en) * | 2020-03-27 | 2020-07-07 | 江苏集萃有机光电技术研究所有限公司 | Electromagnetic valve control circuit, film thickness meter control method and film thickness meter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106965761B (en) * | 2016-01-13 | 2020-10-20 | 厦门雅迅网络股份有限公司 | Power-off protection device for vehicle-mounted equipment system |
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| CN201682417U (en) * | 2010-04-29 | 2010-12-22 | 湖南文理学院 | Power supply protection circuit based on super capacitor |
| CN102280924A (en) * | 2011-07-18 | 2011-12-14 | 北京四方继保自动化股份有限公司 | Uninterrupted power supply system for relay protection device |
| CN202535325U (en) * | 2012-04-28 | 2012-11-14 | 徐晓光 | Time-delay power-off circuit and time-delay power-off socket |
| CN102968170A (en) * | 2012-11-28 | 2013-03-13 | 华南理工大学 | Intelligent self-protection power supply for computer |
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2013
- 2013-08-29 CN CN201310386151.0A patent/CN103457321B/en active Active
Patent Citations (4)
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| CN201682417U (en) * | 2010-04-29 | 2010-12-22 | 湖南文理学院 | Power supply protection circuit based on super capacitor |
| CN102280924A (en) * | 2011-07-18 | 2011-12-14 | 北京四方继保自动化股份有限公司 | Uninterrupted power supply system for relay protection device |
| CN202535325U (en) * | 2012-04-28 | 2012-11-14 | 徐晓光 | Time-delay power-off circuit and time-delay power-off socket |
| CN102968170A (en) * | 2012-11-28 | 2013-03-13 | 华南理工大学 | Intelligent self-protection power supply for computer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391152A (en) * | 2015-12-23 | 2016-03-09 | 无锡江南计算技术研究所 | Backup direct-current high voltage power supply for super capacitor |
| WO2020087270A1 (en) * | 2018-10-30 | 2020-05-07 | 深圳市锐明技术股份有限公司 | Power failure protection circuit, apparatus and system used for vehicle-mounted device |
| CN111380495A (en) * | 2020-03-27 | 2020-07-07 | 江苏集萃有机光电技术研究所有限公司 | Electromagnetic valve control circuit, film thickness meter control method and film thickness meter |
| CN111380495B (en) * | 2020-03-27 | 2022-06-28 | 江苏集萃有机光电技术研究所有限公司 | Electromagnetic valve control circuit, film thickness gauge control method and film thickness gauge |
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| CN103457321B (en) | 2015-06-17 |
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