CN104682934A - Single-key switch control circuit - Google Patents
Single-key switch control circuit Download PDFInfo
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- CN104682934A CN104682934A CN201310612913.4A CN201310612913A CN104682934A CN 104682934 A CN104682934 A CN 104682934A CN 201310612913 A CN201310612913 A CN 201310612913A CN 104682934 A CN104682934 A CN 104682934A
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Abstract
The invention discloses a single-key switch control circuit. Through a trigger signal transmitted through a signal trigger module, under the triggering action of a first trigger signal, a power consumption control key outputs a high level and controls a switch key to output a high level, so that an input switch module is switched on; and furthermore, a voltage division signal module switches on an output switch module in order to control a power supply to supply power to a load. Under the triggering action of a second trigger signal, the power consumption control key outputs a low level and controls the switch key to output a low level, so that the input switch module is switched off; furthermore, the voltage division signal module switches off the output switch module in order to control the power supply to stop supplying power to the load; and in a period when the power consumption control key continuously outputs the low level, the load saves own data. Therefore, a switching circuit is controlled through input signals of an electronic element and the power consumption control key; the adoption of a mechanical switch is avoided; and the phenomena of sparking, oxidation, poor contact and the like are avoided.
Description
Technical field
The present invention relates to switching circuit, particularly relate to a kind of simple, reliable single-button on-off control circuit.
Background technology
A lot of use for electronic products mechanical switch carries out direct switch control rule to power supply at present.Mechanical switch adopts mechanical touching mode to change the break-make of circuit.On such as wall, light switch must touch by hand.Switch is because touching has error, has wearing and tearing, has life-span number of times.And mechanical switch can produce very large immediate current when connecting, and the contact of switch shrapnel easily produces sparking, sparking also just easily makes contact oxidation cause switch loose contact, and switching function may be caused to lose efficacy.
Summary of the invention
Based on this, be necessary to provide a kind of simple and reliable single-button on-off control circuit.
A kind of single-button on-off control circuit, for the power remove of control apparatus equipment, comprises signal detection module, also comprises signal trigger module, voltage division signal module, output switch module and input switch module;
Described signal detection module comprises power consumption control key and on & off switch, described signal detection module is for detecting the triggering signal of described signal trigger module, and the output signal of described power consumption control key and described on & off switch is controlled according to the triggering signal detected, the trigger end of signal detection module and described voltage division signal module described in described signal trigger module one termination, other end ground connection; The power end of described voltage division signal module, signal end, input, output connect input power VIN, power consumption control key, the output of described input switch module, the input of described output switch module respectively; The signal end of described voltage division signal module also meets power supply VCC, on & off switch described in the input termination of described input switch module, the earth terminal ground connection of described input switch module; The power supply termination input power VIN of described output switch module, described output switch module exports terminating load;
When described signal trigger module sends the first triggering signal, described voltage division signal module exports high level, make the conducting of described output switch module, when described signal detection module detects the first triggering signal simultaneously, control described power consumption control key and export high level, and control described on & off switch and export high level, make the conducting of described input switch module, power supply VCC by described voltage division signal module and described output switch module to described load supplying;
When described signal trigger module sends the second triggering signal, when described signal detection module detects the second triggering signal, control described power consumption control key and continue output low level, and control described on & off switch output low level, described input switch module is ended, described voltage division signal module non-output signal, described output switch module is ended, and power supply VCC stops described load supplying, wherein, during described power consumption control key continues output low level, its data is preserved in described load.
Wherein in an embodiment, described signal trigger module comprises trigger switch S1, the trigger end of voltage division signal module described in described trigger switch S1 mono-termination, other end ground connection.
Wherein in an embodiment, described input switch module comprises divider resistance R3 and triode Q2, on & off switch described in described divider resistance R3 mono-termination, the base stage of triode Q2 described in another termination, the grounded emitter of described triode Q2, the collector electrode of described triode Q2 connects the input of described voltage division signal module.
Wherein in an embodiment, described output switch module comprises triode Q1, and the grid of described triode Q1, source electrode and drain electrode be the input of corresponding described output switch module, power end and output respectively.
Wherein in an embodiment, described voltage division signal module comprises divider resistance R1, divider resistance R2, diode D1 and diode D2, described divider resistance R1, described divider resistance R2, described diode D1 and described diode D2 are series between input power VIN and power consumption control key successively, wherein, the negative pole of described diode D1 is connected with the negative pole of described diode D2, and the positive pole of described diode D2 connects power supply VCC and described power consumption control key simultaneously;
Wherein, described divider resistance R1 is away from a termination input power of described divider resistance R2, the points of common connection of described divider resistance R1 and described divider resistance R2 is the output of described voltage division signal module, the points of common connection of described divider resistance R2 and described diode D1 positive pole is the input of described voltage division signal module, the points of common connection of described diode D1 negative pole and described diode D2 negative pole is the trigger end of described voltage division signal module, the signal end of the just very described voltage division signal module of described diode D2.
Wherein in an embodiment, also comprise divider resistance R4, the points of common connection of diode D2 positive pole and described power consumption control key described in described divider resistance R4 mono-termination, another termination power.
The triggering signal that above-mentioned single-button on-off control circuit is sent out by signal trigger module, under the triggering of the first triggering signal, power consumption control key exports high level and control switch key exports high level, thus input switch module conducting, and then control voltage division signal module makes the conducting of output switch module, thus control power supply powers to the load, under the triggering of the second triggering signal, power consumption control key output low level control switch key output low level, thus input switch module cut-off, and then control voltage division signal module makes output switch module end, thus control power supply stops powering to the load, and during power consumption control key continues output low level, its data is preserved in load.Namely realize the input signal control switch circuit adopting electronic component and power consumption control key, avoid adopting mechanical switch, therefore can not produce the phenomenons such as sparking, oxidation, loose contact.
Accompanying drawing explanation
Fig. 1 is the module map of single-button on-off control circuit;
Fig. 2 is the schematic diagram of single-button on-off control circuit.
Embodiment
As shown in Figure 1, be the module map of single-button on-off control circuit.
A kind of single-button on-off control circuit, for the power remove of control apparatus equipment, comprises signal detection module (not shown), signal trigger module 101, input switch module 103, output switch module 107 and voltage division signal module 105.
Signal detection module (not shown) comprises power consumption control key and on & off switch, described signal detection module (not shown) is for detecting the triggering signal of described signal trigger module 101, and the output signal of described power consumption control key and described on & off switch is controlled according to the triggering signal detected, the trigger end of described signal trigger module 101 1 termination signal detection module (not shown) and described voltage division signal module 105, other end ground connection; The power end of described voltage division signal module 105, signal end, input and output connect input power VIN, power consumption control key, the output of described input switch module 103 and the input of described output switch module 107 respectively; The input termination switch key of described input switch module 103, the earth terminal ground connection of described input switch module 103; The power supply termination input power VIN of described output switch module 107, the output terminating load of described output switch module 107.
When described signal trigger module 101 sends the first triggering signal, described voltage division signal module 105 exports high level, make the conducting of described output switch module 107, when described signal detection module (not shown) detects the first triggering signal simultaneously, control described power consumption control key and export high level, and control described on & off switch and export high level, make the conducting of described input switch module 103, input power VCC by described voltage division signal module 105 and described output switch module 107 to described load supplying.
When described signal trigger module 101 sends the second triggering signal, described power consumption control key continues output low level, thus described on & off switch output low level, described input switch module 103 is ended, described voltage division signal module 105 non-output signal, described output switch module 107 is ended, power supply VCC stops load supplying, wherein, during described power consumption control key continues output low level, its data is preserved in described load.
Signal trigger module 101 is for sending the first triggering signal and the second triggering signal.When sending the first triggering signal, power to the load for controlling power supply, and the power-up initializing of completion system.When sending the second triggering signal, stop powering to the load for controlling power supply, and control load keeps its data before power-off.Wherein, the second triggering signal is continuation, is generally 2-9 second.
Input switch module 103 is for controlling the output signal of voltage division signal module 105, be specially, when input switch module 103 receives the high level of on & off switch output, control voltage division signal module 105 and export high level, when receiving the low level that on & off switch exports, control voltage division signal module 105 output low level.
Voltage division signal module 105 receives input power, triggering signal, the output signal of power consumption control key and the output signal of input switch module 103, and exports corresponding level signal.Particularly, when receiving the first triggering signal, power consumption control key exports high level to voltage division signal module 105, and on & off switch exports high level to voltage division signal module 105, corresponding, voltage division signal module 105 exports high level to output switch module 107.When receiving the second triggering signal, power consumption control key is to voltage division signal module 105 output low level, and on & off switch is to voltage division signal module 105 output low level, and correspondence, voltage division signal module 105 is to output switch module 107 output low level.
Output switch module 107 is for controlling connection between power supply and load and disconnection, concrete, when output switch module 107 receives high level, output switch module 107 controls power supply and powers to the load, when output switch module 107 receives low level, output switch module 107 controls power supply and stops powering to the load.
Incorporated by reference to Fig. 2.
Signal trigger module 101 comprises trigger switch S1, the trigger end of voltage division signal module 105 described in described trigger switch S1 mono-termination, other end ground connection.
Input switch module 103 comprises divider resistance R3 and triode Q2, on & off switch described in described divider resistance R3 mono-termination, the base stage of triode Q2 described in another termination, the grounded emitter of described triode Q2, the collector electrode of described triode Q2 connects the input of described voltage division signal module 105.
Output switch module 107 comprises triode Q1, and the grid of described triode Q1, source electrode and drain electrode be the input of corresponding described output switch module 107, power end and output respectively.
Voltage division signal module 105 comprises divider resistance R1, divider resistance R2, diode D1 and diode D2, and described divider resistance R1, described divider resistance R2, described diode D1 and described diode D2 are series between input power VIN and power consumption control key successively.Wherein, the negative pole of described diode D1 is connected with the negative pole of described diode D2, and the positive pole of described diode D2 connects power supply VCC and described power consumption control key simultaneously.
Wherein, described divider resistance R1 is away from a termination input power of described divider resistance R2, the points of common connection of described divider resistance R1 and described divider resistance R2 is the output of described voltage division signal module 105, the points of common connection of described divider resistance R2 and described diode D1 positive pole is the input of described voltage division signal module 105, the points of common connection of described diode D1 negative pole and described diode D2 negative pole is the trigger end of described voltage division signal module 105, the signal end of the just very described voltage division signal module 105 of described diode D2.
Single-button on-off control circuit also comprises divider resistance R4, the points of common connection of diode D2 positive pole and described power consumption control key described in described divider resistance R4 mono-termination, another termination power.
Based on above-mentioned all embodiments, as follows for the operation principle of monolithic processor controlled single-button on-off control circuit:
Press trigger switch S1, namely the first triggering signal is sent, input voltage VIN is via divider resistance R1, divider resistance R2, diode D1 and trigger S1 to ground connection, form conducting loop, therefore, the voltage that divider resistance R1 gets exports to the grid of triode Q1, makes to form pressure drop between the grid of triode Q1 and source electrode, therefore triode Q1 conducting.The Single Chip Microcomputer (SCM) system be connected with single-button on-off control circuit starts initialization, and power consumption control key KEYPWR exports high level, and switching on and shutting down ON/OFF exports high level, therefore, triode Q2 base stage receives high level, triode Q2 also conducting, i.e. completion system start, trigger switch S1 can disconnect.Power supply starts to power to the load.
Pressing trigger switch S1 also keeps pressing several seconds, namely the second triggering signal is sent, power consumption control key KEYPWR output low level, microprocessor detect is continuously low level and after keeping certain hour to power consumption control key, control system data preserve and carry out shutdown prepare after, on & off switch ON/OFF output low level, after the base stage reception low level of triode Q2, triode Q2 ends.Meanwhile, after stopping pressing trigger switch S1, input voltage VIN, via between divider resistance R1, divider resistance R2 diode D1 and trigger switch S1 to ground connection, cannot form conducting loop.Therefore, divider resistance R1 does not have pressure drop, triode Q1 grid is equal with source voltage, and triode Q1 does not have electric current process, and namely triode Q1 ends, and power supply stops powering to the load.
Above-mentioned single-button on-off control circuit is by the triggering signal of signal trigger module 101, under the triggering of the first triggering signal, power consumption control key exports high level and control switch key exports high level, thus input switch module 103 conducting, and then control voltage division signal module 105 makes output switch module 107 conducting, thus control power supply powers to the load, under the triggering of the second triggering signal, power consumption control key output low level control switch key output low level, thus input switch module 103 is ended, and then control voltage division signal module 105 makes output switch module 107 end, thus control power supply stops powering to the load, and during power consumption control key continues output low level, its data is preserved in load.Namely realize the input signal control switch circuit adopting electronic component and power consumption control key, avoid adopting mechanical switch, therefore can not produce the phenomenons such as sparking, oxidation, loose contact.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (6)
1. a single-button on-off control circuit, for the power remove of control apparatus equipment, comprises signal detection module, it is characterized in that, also comprises signal trigger module, voltage division signal module, output switch module and input switch module;
Described signal detection module comprises power consumption control key and on & off switch, described signal detection module is for detecting the triggering signal of described signal trigger module, and the output signal of described power consumption control key and described on & off switch is controlled according to the triggering signal detected, the trigger end of signal detection module and described voltage division signal module described in described signal trigger module one termination, other end ground connection; The power end of described voltage division signal module, signal end, input, output connect input power VIN, power consumption control key, the output of described input switch module, the input of described output switch module respectively; The signal end of described voltage division signal module also meets power supply VCC, on & off switch described in the input termination of described input switch module, the earth terminal ground connection of described input switch module; The power supply termination input power VIN of described output switch module, described output switch module exports terminating load;
When described signal trigger module sends the first triggering signal, described voltage division signal module exports high level, make the conducting of described output switch module, when described signal detection module detects the first triggering signal simultaneously, control described power consumption control key and export high level, and control described on & off switch and export high level, make the conducting of described input switch module, power supply VCC by described voltage division signal module and described output switch module to described load supplying;
When described signal trigger module sends the second triggering signal, when described signal detection module detects the second triggering signal, control described power consumption control key and continue output low level, and control described on & off switch output low level, described input switch module is ended, described voltage division signal module non-output signal, described output switch module is ended, and power supply VCC stops described load supplying, wherein, during described power consumption control key continues output low level, its data is preserved in described load.
2. single-button on-off control circuit according to claim 1, is characterized in that, described signal trigger module comprises trigger switch S1, the trigger end of voltage division signal module described in described trigger switch S1 mono-termination, other end ground connection.
3. single-button on-off control circuit according to claim 1, it is characterized in that, described input switch module comprises divider resistance R3 and triode Q2, on & off switch described in described divider resistance R3 mono-termination, the base stage of triode Q2 described in another termination, the grounded emitter of described triode Q2, the collector electrode of described triode Q2 connects the input of described voltage division signal module.
4. single-button on-off control circuit according to claim 1, is characterized in that, described output switch module comprises triode Q1, and the grid of described triode Q1, source electrode and drain electrode be the input of corresponding described output switch module, power end and output respectively.
5. single-button on-off control circuit according to claim 1, it is characterized in that, described voltage division signal module comprises divider resistance R1, divider resistance R2, diode D1 and diode D2, described divider resistance R1, described divider resistance R2, described diode D1 and described diode D2 are series between input power VIN and power consumption control key successively, wherein, the negative pole of described diode D1 is connected with the negative pole of described diode D2, and the positive pole of described diode D2 connects power supply VCC and described power consumption control key simultaneously;
Wherein, described divider resistance R1 is away from a termination input power of described divider resistance R2, the points of common connection of described divider resistance R1 and described divider resistance R2 is the output of described voltage division signal module, the points of common connection of described divider resistance R2 and described diode D1 positive pole is the input of described voltage division signal module, the points of common connection of described diode D1 negative pole and described diode D2 negative pole is the trigger end of described voltage division signal module, the signal end of the just very described voltage division signal module of described diode D2.
6. single-button on-off control circuit according to claim 5, is characterized in that, also comprises divider resistance R4, the points of common connection of diode D2 positive pole and described power consumption control key described in described divider resistance R4 mono-termination, another termination power.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310612913.4A CN104682934B (en) | 2013-11-26 | 2013-11-26 | Single-button on-off control circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310612913.4A CN104682934B (en) | 2013-11-26 | 2013-11-26 | Single-button on-off control circuit |
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| CN104682934A true CN104682934A (en) | 2015-06-03 |
| CN104682934B CN104682934B (en) | 2019-04-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106502151A (en) * | 2016-11-03 | 2017-03-15 | 武汉博激世纪科技有限公司 | A kind of band software lock control on/off circuit |
| CN112994408A (en) * | 2019-12-02 | 2021-06-18 | 佛山市顺德区美的电热电器制造有限公司 | Low-power-consumption control system and control method, and electronic device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02273425A (en) * | 1989-04-14 | 1990-11-07 | Matsushita Electric Works Ltd | Load control device |
| CN101043144A (en) * | 2007-04-06 | 2007-09-26 | 炬力集成电路设计有限公司 | Electrical source managing method of portable electronic products and apparatus thereof |
| CN202334467U (en) * | 2011-10-28 | 2012-07-11 | 成都高新区尼玛电子产品外观设计工作室 | On-off circuit adopting two triodes |
-
2013
- 2013-11-26 CN CN201310612913.4A patent/CN104682934B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02273425A (en) * | 1989-04-14 | 1990-11-07 | Matsushita Electric Works Ltd | Load control device |
| CN101043144A (en) * | 2007-04-06 | 2007-09-26 | 炬力集成电路设计有限公司 | Electrical source managing method of portable electronic products and apparatus thereof |
| CN202334467U (en) * | 2011-10-28 | 2012-07-11 | 成都高新区尼玛电子产品外观设计工作室 | On-off circuit adopting two triodes |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106502151A (en) * | 2016-11-03 | 2017-03-15 | 武汉博激世纪科技有限公司 | A kind of band software lock control on/off circuit |
| CN112994408A (en) * | 2019-12-02 | 2021-06-18 | 佛山市顺德区美的电热电器制造有限公司 | Low-power-consumption control system and control method, and electronic device |
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| CN104682934B (en) | 2019-04-12 |
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