CN204012785U - A kind of highway radio-frequency card electric power supply control system - Google Patents
A kind of highway radio-frequency card electric power supply control system Download PDFInfo
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- CN204012785U CN204012785U CN201420299002.0U CN201420299002U CN204012785U CN 204012785 U CN204012785 U CN 204012785U CN 201420299002 U CN201420299002 U CN 201420299002U CN 204012785 U CN204012785 U CN 204012785U
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Abstract
The utility model discloses a kind of highway radio-frequency card electric power supply control system, comprise main power supply circuits, instantaneous power supply circuits, low level holding circuit and control energy supply power-down circuit, thereby control opening with disconnected of main power supply circuits by controlling power supply transistor base voltage, under initial condition, energy supply transistor base is high level, in cut-off state, need to lean on instantaneous power supply circuits to drag down energy supply transistor base is low level, meanwhile, the base stage that maintains energy supply triode by low level holding circuit is low level; But, when P1.6 mouth connects the signal intensity that the I/O mouth of external microcontroller sends, make again circuit recover, main power supply circuits disconnection; Utilize the utility model to can be good at saving highway radio-frequency card electric energy, suitable power-off and energising, guarantee that disposable battery can meet national regulation service life, reduces production costs well, improves the level of resources utilization.
Description
Technical field
The utility model relates to hot-short mileage and follows the trail of radio-frequency card energy supply technical field, relates in particular to a kind of for vehicle on highway mileage tracking radio-frequency card electric power supply control system.
Background technology
At present, radio-frequency technique has applied to vehicle on highway and has passed through in tracking mileage, the high speed expense of collecting that can be more fair.The vehicle of high speed on needs, at high speed station entrance, get radio frequency visa card, in the process of moving, radio frequency visa card carries out wireless telecommunications with the electronic route sign base station arranging along road at a high speed, and radio frequency visa card records and store run routing information, when vehicle needs End of motorway, exit under high speed, show radio frequency visa card, check distance and the path of Vehicle Driving Cycle, carry out accurately, reasonably charge.
Existing radio frequency visa card has multiple power supply form: chargeable and not chargeable.After chargeable radio frequency visa card need to wait for that the electric energy of internal reservoir is finished using, carry out again charging next time, the drawback of this situation is, user can not clearly clearly recognize the electric weight situation of radio frequency visa card, power-off suddenly in driving process, the tracking of can not travelling, makes charge station can not accurately read vehicle distance, causing charge disappearance.For not chargeable radio frequency visa card, national regulation, can not surpass 5 years the service life of radio-frequency card at most, however the electric energy in current disposable radio frequency visa card can not provide enough energy, for continuous 5 years of disposable radio frequency visa card.This just makes reduce the service life of disposable radio frequency visa card, has certain wasting of resources.
Utility model content
The purpose of this utility model is to provide a kind of highway radio-frequency card electric power supply control system, makes disposable battery can meet national regulation service life, and limited saving highway radio-frequency card electric energy improves the level of resources utilization simultaneously.
The technical solution adopted in the utility model is:
A kind of highway radio-frequency card electric power supply control system, comprise main power supply circuits, instantaneous power supply circuits, low level holding circuit and control energy supply power-down circuit, main power supply circuits comprise power supply, the negative pole of power supply is by the first inductance ground connection, the first inductance in parallel has the first electric capacity, the positive pole of power supply connects the first end of the second inductance, the second end of the second inductance connects the emitter of energy supply triode, the collector electrode of energy supply triode connects the first end of the first resistance, and the second end of the first resistance is as feeder ear, instantaneous power supply circuits comprise the first passive chip, the electric energy input of the first passive chip is used for introducing instantaneous radiation electric energy, the first electric energy output end of the first passive chip connects the second resistance first end, second resistance the second end ground connection, second resistance the second end also connects the second end of the second inductance by the second electric capacity, the second electric energy output end of the first passive chip is connected the input of halfwave rectifier unit by the 3rd resistance successively with the 3rd electric capacity, the output of halfwave rectifier unit is connected and is brought out the base stage that energy supply transistor base is low level triode by the 4th resistance, bring out the grounded collector that energy supply transistor base is low level triode, bringing out energy supply transistor base is the base stage of the emitter connection energy supply triode of low level triode, low level holding circuit includes source node, the input of active node connects feeder ear, the output of active node connects respectively the first low level by the 5th resistance and keeps the base stage of triode and the collector electrode that the second low level keeps triode, the first low level keeps the grounded emitter of triode, the first low level keeps the collector electrode of triode to connect the base stage that the second low level keeps triode, the first low level keeps the collector electrode of triode also to connect the base stage of energy supply triode, the first low level keeps the collector electrode of triode also by the 4th capacity earth, the second low level keeps the grounded emitter of triode, control energy supply power-down circuit and comprise the 6th resistance, the first end of the 6th resistance connects the I/O mouth of external microcontroller, the second end of the 6th resistance connects the base stage of power-off energy supply triode, the grounded collector of power-off energy supply triode, the emitter of power-off energy supply triode connects the second end of the 5th resistance, the collector electrode of power-off energy supply triode is connected and is brought out the base stage that energy supply transistor base is the triode of high level by the 5th electric capacity, the base stage of bringing out energy supply transistor base and be the triode of high level also connects the second end of the 5th resistance, the emitter that brings out energy supply transistor base and be the triode of high level connects the second end of the second inductance, the collector electrode that brings out energy supply transistor base and be the triode of high level connects the base stage of energy supply triode by the 7th resistance.
Described halfwave rectifier unit comprises the first rectification triode and the second rectification triode, the base stage of the collector electrode of the first rectification triode and the second rectification triode is connected the second end of the 3rd electric capacity, the base earth of the first rectification triode, the collector electrode of the second rectification triode is as the output of halfwave rectifier unit.
The collector electrode of the second described rectification triode connects the base stage of external interrupt triode by the 8th resistance, the grounded collector of external interrupt triode, and the emitter of external interrupt triode connects the I/O of external microcontroller.
Thereby the utility model is controlled opening with disconnected of main power supply circuits by controlling power supply transistor base voltage, under initial condition, energy supply transistor base is high level, in cut-off state, need to lean on instantaneous power supply circuits to drag down energy supply transistor base to low level, meanwhile, the base stage that maintains energy supply triode by low level holding circuit is low level; When signal intensity that the I/O mouth of P1.6 external microcontroller that mouth connects sends, make again circuit recover, main power supply circuits disconnection; Utilize the utility model to can be good at saving highway radio-frequency card electric energy, suitable power-off and energising, guarantee that disposable battery can meet national regulation service life, reduces production costs well, improves the level of resources utilization.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises main power supply circuits, instantaneous power supply circuits, low level holding circuit and controls energy supply power-down circuit, main power supply circuits comprise power supply BT, the negative pole of power supply BT is by the first inductance L 1 ground connection, the first inductance L 1 is parallel with the first capacitor C 1, the positive pole of power supply BT connects the first end of the second inductance L 2, the second end of the second inductance L 2 connects the emitter of energy supply triode VT2, the collector electrode of energy supply triode VT2 connects the first end of the first resistance R 1, and the second end of the first resistance R 1 is as feeder ear, instantaneous power supply circuits comprise passive chip J1, the electric energy input a of passive chip J1, b is used for introducing instantaneous radiation electric energy, the first electric energy output end of passive chip J1 connects the second resistance R 2 first ends, the second resistance R 2 second end ground connection, the second resistance R 2 second ends also connect the second end of the second inductance L 2 by the second capacitor C 2, the second electric energy output end of passive chip J1 is connected the collector electrode of the first rectification triode VD1 and the base stage of the second rectification triode VD2 of halfwave rectifier unit successively with the 3rd capacitor C 3 by the 3rd resistance R 3, the base earth of the first rectification triode VD1, the collector electrode of the second rectification triode VD2 is as the output of halfwave rectifier unit, the output of halfwave rectifier unit is connected and is brought out the base stage that energy supply transistor base is low level triode VT6 by the 4th resistance R 4, bring out the grounded collector that energy supply transistor base is low level triode VT6, bringing out energy supply transistor base is the base stage of the emitter connection energy supply triode VT2 of low level triode VT6, low level holding circuit includes source node J3, the input of active node J3 connects feeder ear, the output of active node J3 connects respectively the first low level by the 5th resistance R 5 and keeps the base stage of triode VT5 and the collector electrode that the second low level keeps triode VT3, the first low level keeps the grounded emitter of triode VT5, the first low level keeps the collector electrode of triode VT5 to connect the base stage that the second low level keeps triode VT3, the first low level keeps the collector electrode of triode VT5 also to connect the base stage of energy supply triode VT2, the first low level keeps the collector electrode of triode VT5 also by the 4th capacitor C 4 ground connection, the second low level keeps the grounded emitter of triode VT3, control energy supply power-down circuit and comprise the 6th resistance R 6, the first end of the 6th resistance R 6 connects the I/O mouth J2 of external microcontroller, the second end of the 6th resistance R 6 connects the base stage of power-off energy supply triode VT4, the grounded collector of power-off energy supply triode VT4, the emitter of power-off energy supply triode VT4 connects the second end of the 5th resistance R 5, the collector electrode of power-off energy supply triode VT4 is connected and is brought out the base stage that energy supply transistor base is the triode VT1 of high level by the 5th capacitor C 5, the base stage of bringing out energy supply transistor base and be the triode VT1 of high level also connects the second end of the 5th resistance R 5, the emitter that brings out energy supply transistor base and be the triode VT1 of high level connects the second end of the second inductance L 2, the collector electrode that brings out energy supply transistor base and be the triode VT1 of high level connects the base stage of energy supply triode VT2 by the 7th resistance R 7.The collector electrode of the second rectification triode VD2 connects the base stage of external interrupt triode VT7 by the 8th resistance R 8, the grounded collector of external interrupt triode VT7, and the emitter of external interrupt triode VT7 connects the I/O mouth P1.5OUT of external microcontroller.
Below, describe operation principle of the present utility model in detail:
The purpose of this utility model is with radio-frequency card, to provide stable for highway, reliable power supply BT, by power supply BT for power consumption parts electric energy is provided, in main power supply circuits, the positive pole of power supply BT is successively by the second inductance L 2, energy supply triode VT2, the first resistance R 1 for power consumption parts electric energy is provided, energy supply triode VT2 is as the decisive original paper in main power supply circuits, be equivalent to the switch in main power supply circuits, only has energy supply triode VT2 conducting, energy supply smoothly, but, energy supply triode VT2 is low pressure turn-on transistor, the base stage that need to guarantee energy supply triode VT2 is the conducting of low-voltage ability, when being high voltage, base stage ends, for can energy-on-demand, the base stage that need to keep energy supply triode VT2 is low-voltage, this just needs the effect of low level holding circuit to maintain.During initial condition, by power supply BT, transmit electric energy, the second end of the second inductance L 2 is high level, bring out energy supply transistor base and be the transmitting high level very of the triode VT1 of high level, owing to bringing out energy supply transistor base, be that the base stage of triode VT1 of high level is by the 5th capacitor C 5 ground connection, so bringing out energy supply transistor base and be the base stage of the triode VT1 of high level is low level, bringing out energy supply transistor base is the triode VT1 conducting of high level, conducting after-current flows to energy supply triode VT2 base stage through the 7th resistance R 7, making energy supply triode VT2 base stage is high level, initial condition, energy supply triode VT2 is in cut-off state, thereby main power supply circuits become the state of disconnection, power supply BT can not be P1.5 confession electricity.
When needs are used radio-frequency card, the energy that passive chip J1 access is carried out radiation by means of peripheral inductance coil, now, the energy of radiation is instantaneous generation, energy transmits from the second electric energy output end through passive chip, through the 3rd resistance R 3 and the 3rd capacitor C 3, connect halfwave rectifier unit, because the energy of inductance coil radiation belongs to alternating current, need the rectification of halfwave rectifier unit, electric current after rectification is carried, through the 4th resistance R 4, connect and bring out the base stage that energy supply transistor base is low level triode VT6 on the one hand, bringing out energy supply transistor base is low level triode VT6 conducting, after conducting, make the base stage that connects energy supply triode VT2 become low level, energy supply triode VT2 high pass, main power supply circuits are connected, on the other hand, the electric current after rectification connects the base stage of external interrupt triode VT7 through the 8th resistance R 8, make external interrupt triode VT7 conducting, thereby give external interrupt signal of external microcontroller, makes it wake external active card up and enters the long pattern of waking up.The effect of instantaneous power supply circuits is exactly to produce instantaneous energy, drags down the base stage level of energy supply triode VT2, becomes low level conducting state.
Now, main power supply circuits are connected, but need to keep the base stage level of energy supply triode VT2 is low level, and this just needs the work of low level holding circuit.Because P1.5 mouth now has electricity, so, active node P1.6 also accesses electric energy, electric current connects respectively through the 5th resistance R 5 base stage that the first low level keeps triode VT5, the second low level keeps the collector electrode of triode VT3 and brings out the base stage that energy supply transistor base is the triode VT1 of high level, make the first low level keep the base stage of triode VT5, the second low level keeps the collector electrode of triode VT3 and brings out energy supply transistor base is that the base stage of the triode VT1 of high level is all high level, so, bring out energy supply transistor base and be the triode VT1 of high level in cut-off state and to the 5th capacitor C 5 chargings, the base stage that can not draw high energy supply triode VT2 is high level, it is high level conducting that the first low level keeps the base stage of triode VT5, so the current collection of the first low level maintenance triode VT5 is low level very, it is low level that thereby the base stage that makes energy supply triode VT2 keeps low level and the second low level to keep the base stage of triode VT3, the second low level maintenance triode VT3 belongs to the triode of high level conducting, so in cut-off state.The work of low level holding circuit is complete.
When needs disconnect main power supply circuits, start and control energy supply power-down circuit, P1.6 mouth connects the I/O mouth of external microcontroller, when signal intensity that external microcontroller sends by I/O, electric current flows to the base stage of power-off energy supply triode VT4 through the 6th resistance R 6, making the base stage of power-off energy supply triode VT4 is high level, conducting, voltage in the 5th capacitor C 5 is discharged, the voltage that makes to bring out energy supply transistor base and be in the base stage of triode VT1 of high level changes low level into by high level, make its conducting, thereby the base stage that makes energy supply triode VT2 is high level, return to initial condition, main power supply circuits are the state in disconnecting again.
Claims (3)
1. a highway radio-frequency card electric power supply control system, it is characterized in that: comprise main power supply circuits, instantaneous power supply circuits, low level holding circuit and control energy supply power-down circuit, main power supply circuits comprise power supply, the negative pole of power supply is by the first inductance ground connection, the first inductance in parallel has the first electric capacity, the positive pole of power supply connects the first end of the second inductance, the second end of the second inductance connects the emitter of energy supply triode, the collector electrode of energy supply triode connects the first end of the first resistance, and the second end of the first resistance is as feeder ear, instantaneous power supply circuits comprise the first passive chip, the electric energy input of the first passive chip is used for introducing instantaneous radiation electric energy, the first electric energy output end of the first passive chip connects the second resistance first end, second resistance the second end ground connection, second resistance the second end also connects the second end of the second inductance by the second electric capacity, the second electric energy output end of the first passive chip is connected the input of halfwave rectifier unit by the 3rd resistance successively with the 3rd electric capacity, the output of halfwave rectifier unit is connected and is brought out the base stage that energy supply transistor base is low level triode by the 4th resistance, bring out the grounded collector that energy supply transistor base is low level triode, bringing out energy supply transistor base is the base stage of the emitter connection energy supply triode of low level triode, low level holding circuit includes source node, the input of active node connects feeder ear, the output of active node connects respectively the first low level by the 5th resistance and keeps the base stage of triode and the collector electrode that the second low level keeps triode, the first low level keeps the grounded emitter of triode, the first low level keeps the collector electrode of triode to connect the base stage that the second low level keeps triode, the first low level keeps the collector electrode of triode also to connect the base stage of energy supply triode, the first low level keeps the collector electrode of triode also by the 4th capacity earth, the second low level keeps the grounded emitter of triode, control energy supply power-down circuit and comprise the 6th resistance, the first end of the 6th resistance connects the I/O mouth of external microcontroller, the second end of the 6th resistance connects the base stage of power-off energy supply triode, the grounded collector of power-off energy supply triode, the emitter of power-off energy supply triode connects the second end of the 5th resistance, the collector electrode of power-off energy supply triode is connected and is brought out the base stage that energy supply transistor base is the triode of high level by the 5th electric capacity, the base stage of bringing out energy supply transistor base and be the triode of high level also connects the second end of the 5th resistance, the emitter that brings out energy supply transistor base and be the triode of high level connects the second end of the second inductance, the collector electrode that brings out energy supply transistor base and be the triode of high level connects the base stage of energy supply triode by the 7th resistance.
2. highway according to claim 1 radio-frequency card electric power supply control system, it is characterized in that: described halfwave rectifier unit comprises the first rectification triode and the second rectification triode, the base stage of the collector electrode of the first rectification triode and the second rectification triode is connected the second end of the 3rd electric capacity, the base earth of the first rectification triode, the collector electrode of the second rectification triode is as the output of halfwave rectifier unit.
3. highway according to claim 2 radio-frequency card electric power supply control system, it is characterized in that: the collector electrode of the second described rectification triode connects the base stage of external interrupt triode by the 8th resistance, the grounded collector of external interrupt triode, the emitter of external interrupt triode connects the I/O of external microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420299002.0U CN204012785U (en) | 2014-06-06 | 2014-06-06 | A kind of highway radio-frequency card electric power supply control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420299002.0U CN204012785U (en) | 2014-06-06 | 2014-06-06 | A kind of highway radio-frequency card electric power supply control system |
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| CN204012785U true CN204012785U (en) | 2014-12-10 |
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| CN201420299002.0U Withdrawn - After Issue CN204012785U (en) | 2014-06-06 | 2014-06-06 | A kind of highway radio-frequency card electric power supply control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052111A (en) * | 2014-06-06 | 2014-09-17 | 河南省交通科学技术研究院有限公司 | Radio frequency card power supply control system for highway |
-
2014
- 2014-06-06 CN CN201420299002.0U patent/CN204012785U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052111A (en) * | 2014-06-06 | 2014-09-17 | 河南省交通科学技术研究院有限公司 | Radio frequency card power supply control system for highway |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Wei Inventor after: Li Zhengfeng Inventor after: Feng Jia Inventor after: Meng Lingyong Inventor after: Sun Youshan Inventor after: Zhang Gang Inventor after: Zhang Yu Inventor after: Du Xiao Inventor after: Shen Lin Inventor before: Guo Wei Inventor before: Li Zhengfeng Inventor before: Feng Jia Inventor before: Meng Lingyong Inventor before: Sun Youshan Inventor before: Zhang Gang |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: GUO WEI LI ZHENGFENG FENG JIA MENG LINGYONG SUN YOUSHAN ZHANG GANG TO: GUOWEI LI ZHENGFENG FENG JIA MENG LINGYONG SUN YOUSHAN ZHANG GANG ZHANG YU DU XIAO SHEN LIN |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20141210 Effective date of abandoning: 20160224 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |