CN201472273U - Power-off reset switch circuit - Google Patents
Power-off reset switch circuit Download PDFInfo
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- CN201472273U CN201472273U CN2009201723587U CN200920172358U CN201472273U CN 201472273 U CN201472273 U CN 201472273U CN 2009201723587 U CN2009201723587 U CN 2009201723587U CN 200920172358 U CN200920172358 U CN 200920172358U CN 201472273 U CN201472273 U CN 201472273U
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- switch circuit
- restoration
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 230000007423 decrease Effects 0.000 claims description 7
- 239000013256 coordination polymer Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
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Abstract
The utility model discloses a power-off reset switch circuit, which is characterized in that: the circuit is that a circuit power supply is connected with a switch circuit through a starting circuit, the circuit power supply is connected with a switching circuit through a voltage conversion unit, and then is connected with the switch circuit, and the switch circuit is connected with a load; the above structure is adopted, therefore, the power-off reset switch circuit has the following advantages: firstly, the power-off automatic reset function of the switch is realized; secondly, the circuit is relatively simple, the production cost is reduced; thirdly, the conventional mechanical switch is replaced by the simple circuit switch, and the overall stability is increased; fourthly, the occupation of pin resource of the external module of the circuit is avoided, and the external circuit is simplified.
Description
Relate to the field
The utility model relates to vehicle electric field, particularly a kind of power-off restoration switch circuit.
Background technology
Development along with automotive technology, the customer is also more and more higher for the requirement of the safety of vehicle complete vehicle and traveling comfort, consider based on aspects such as the requirement of relevant laws and regulations and car load traveling comforts, require the electrical part in the automobile, for example fog tail lamp and sound equipment etc. possess outage from reset function, promptly need artificially to press master cock once more after the outage and could open current consumer.
Present implementing measure roughly is divided into following two classes: 1. electric control switch and power control switch mechanical chain mechanism makes that electric control switch takeoff automatically when power supply disconnected.2. by the micro-switch of a crawl, provide energizing signal to form an outage self-resetting circuit to special chip and driving circuit.The prior art constructions complexity, resistance to overturning is poor, and takies the resource of external module.
The utility model content
Technical problem to be solved in the utility model is, a kind of power-off restoration switch circuit is provided, and realize the outage auto-reset function of switch to reach car electrics spare, and circuit is simple, the purpose that stability is strong.
For solving the problems of the technologies described above, the technical solution of the utility model is, a kind of power-off restoration switch circuit, it is characterized in that: described circuit is that circuit power is connected with switch circuit by start-up circuit, circuit power is connected with switch circuit after inserting commutation circuit by voltage conversion unit, switch circuit connects load, thereby realizes realizing the Push And Release of switch circuit by pressing the two-way crawl moving switch SW that declines, and realizes that car electrics spare realizes the outage auto-reset function of switch.
A kind of power-off restoration switch circuit, described start-up circuit is that circuit power inserts decline switch SW 1 coil L1 by high sensitive relay RL1 behind the contact K1 of high sensitive relay RL1 of moving switch SW of two-way crawl respectively and inserts switch circuit with aerotron V1, is the starting switch circuit thereby make start-up circuit be implemented in to press first the two-way crawl to decline to move switch SW.
A kind of power-off restoration switch circuit, to be circuit power insert the two-way crawl by voltage conversion unit to described commutation circuit declines and be connected to the CP end of d type flip flop after the switch SW 2 of moving switch SW, the Q termination of d type flip flop is gone into switch circuit, thereby passes through the Push And Release of commutation circuit master cock circuit behind the starting switch circuit.
A kind of power-off restoration switch circuit, described switch circuit be start-up circuit, commutation circuit by incircuit power supply behind the coil L2 of resistance R 3 cut-in relay RL2, the contact K2 of relay R L2 inserts load, thereby realizes the switch of the power supply of load.
A kind of power-off restoration switch circuit, described circuit power are direct current 12V power supply.
A kind of power-off restoration switch circuit, described voltage conversion unit are 7805.
A kind of power-off restoration switch circuit, owing to adopt said structure, this circuit has the following advantages: the outage auto-reset function of 1, realizing switch; 2, circuit is simple relatively, reduces productive costs; 3, replace traditional mechanical switch with simple contactor, improve single-piece stability; 4, avoid taking the pin resource of the external module of circuit, simplify external circuit.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail;
Fig. 1 is the circuit block diagram of a kind of power-off restoration switch circuit of the utility model;
Fig. 2 is the circuit diagram of a kind of power-off restoration switch circuit of the utility model;
In Fig. 1-2,1, start-up circuit; 2, commutation circuit; 3, switch circuit; 4, voltage conversion unit; 5, load.
The specific embodiment
Shown in Fig. 1-2, a kind of power-off restoration switch circuit, it is characterized in that: described circuit is that circuit power passes through start-up circuit 1 and is connected with switch circuit 3, circuit power inserts commutation circuit 2 backs by voltage conversion unit 4 and is connected with switch circuit 3, switch circuit 3 connects load 5, thereby realize realizing the Push And Release of switch circuit 3, and realize that car electrics spare realizes the outage auto-reset function of switch by pressing the two-way crawl moving switch SW that declines.
A kind of power-off restoration switch circuit, described start-up circuit 1 inserts switch circuit 3 for circuit power inserts decline switch SW 1 coil L1 by high sensitive relay RL1 behind the contact K1 of high sensitive relay RL1 of moving switch SW of two-way crawl respectively with aerotron V1, is starting switch circuit 3 thereby make start-up circuit 1 be implemented in to press first the two-way crawl to decline to move switch SW.
A kind of power-off restoration switch circuit, described commutation circuit 2 declines and is connected to the CP end of d type flip flop after the switch SW 2 of moving switch SW for circuit power inserts the two-way crawls by voltage conversion unit 4, the Q termination of d type flip flop is gone into switch circuit 3, thereby passes through the Push And Release of commutation circuit master cock circuit 3 in starting switch circuit 3 backs.
A kind of power-off restoration switch circuit, described switch circuit 3 be start-up circuit 1, commutation circuit 2 by incircuit power supply behind the coil L2 of resistance R 3 cut-in relay RL2, the contact K2 of relay R L2 inserts load 5, thereby realizes the switch of the power supply of load 5.
A kind of power-off restoration switch circuit, described circuit power are direct current 12V power supply.
A kind of power-off restoration switch circuit, described voltage conversion unit are 7805.
The utility model is made up of the crawl of the two-way several parts such as moving switch SW, supersensitive relay RL1, triode V1, d type flip flop, voltage conversion unit 4, relay R L2 and load 5 that decline.After pressing two-way crawl micro-switch SW, wherein after one road micro-switch adhesive and drive the contact K1 adhesive of supersensitive relay RL1, form self-hold circuit, amplify by triode V1, drive relay R L2 work, another road micro-switch connects a d type flip flop, realizes the upset of relay R L2 drive end electromotive force, promptly realizes the normal on-off function of switch.When Switching Power Supply re-powered, on off state automatically reset, and relay R L2, relay R L1 do not work.This control circuit can be realized the mode of micro-switch SW circuit drives electric appliance load 6, and has switch outage back from the function that resets.
Working process is: after the two-way crawl declines moving switch SW action, the coil L1 of supersensitive relay RL1 get electric after, its open contact K1 adhesive, because about 100ms of shortest time of micro-switch SW contacting, and the pickup time of supersensitive relay is less than 10ms, therefore press the smooth adhesive of contact K1 that micro-switch SW can guarantee relay R L1, contact K1 and the coil L1 of relay R L1 have formed self-hold circuit together, then the amplification through triode V1 drives relay R L2, the K2 adhesive of its contact, mouth 87 pin of relay R L2 are connected to load 5 simultaneously.Decline after the moving switch SW when pressing the two-way crawl once more, wherein a way switch SW2 provides the CP end of the energizing signal of positive rise to d type flip flop, the upset of Q end electromotive force, the output high level signal, the electromotive force that a is ordered is drawn high, made the contact release of relay R L2, realize the turn-off function of switch.After pressing micro-switch SW afterwards, Q end electromotive force overturns thereupon, realizes that then relay R L2 carries out the upset of adhesive and release at every turn.After switch re-powered, the micro-switch circuit disconnected, and relay R L2 does not work, up to pressing micro-switch again.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present utility model and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection domain of the present utility model.
Claims (6)
1. power-off restoration switch circuit, it is characterized in that: described circuit is that circuit power passes through start-up circuit (1) and is connected with switch circuit (3), circuit power inserts commutation circuit (2) back by voltage conversion unit (4) and is connected with switch circuit (3), and switch circuit (3) connects load (5).
2. a kind of power-off restoration switch circuit according to claim 1 is characterized in that: described start-up circuit (1) inserts the two-way crawl switch (SW1) of moving switch (SW) coil (L1) and aerotron (V1) access switch circuit (3) by high sensitive relay (RL1) with the contact (K1) of high sensitive relay (RL1) after that decline respectively for circuit power.
3. a kind of power-off restoration switch circuit according to claim 1, it is characterized in that: described commutation circuit (2) declines and is connected to the CP end of d type flip flop behind the switch (SW2) of moving switch (SW) for circuit power inserts the two-way crawl by voltage conversion unit (4), and the Q termination of d type flip flop is gone into switch circuit (3).
4. a kind of power-off restoration switch circuit according to claim 1, it is characterized in that: described switch circuit is coil (L2) the back incircuit power supply that start-up circuit (1), commutation circuit (2) are passed through resistance (R3) cut-in relay (RL2), and load (5) is inserted in the contact (K2) of relay (RL2).
5. a kind of power-off restoration switch circuit according to claim 1 is characterized in that: described circuit power is a direct current 12V power supply.
6. a kind of power-off restoration switch circuit according to claim 3 is characterized in that: described voltage conversion unit is 7805.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201723587U CN201472273U (en) | 2009-06-01 | 2009-06-01 | Power-off reset switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201723587U CN201472273U (en) | 2009-06-01 | 2009-06-01 | Power-off reset switch circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201472273U true CN201472273U (en) | 2010-05-19 |
Family
ID=42408518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201723587U Expired - Fee Related CN201472273U (en) | 2009-06-01 | 2009-06-01 | Power-off reset switch circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201472273U (en) |
-
2009
- 2009-06-01 CN CN2009201723587U patent/CN201472273U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20140601 |