CN204031116U - A kind of touch key function control circuit of charged electronic switch - Google Patents
A kind of touch key function control circuit of charged electronic switch Download PDFInfo
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- CN204031116U CN204031116U CN201420416479.2U CN201420416479U CN204031116U CN 204031116 U CN204031116 U CN 204031116U CN 201420416479 U CN201420416479 U CN 201420416479U CN 204031116 U CN204031116 U CN 204031116U
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Abstract
The utility model relates to a kind of touch key function control circuit of charged electronic switch, comprises central processing unit, 5V voltage stabilizing chip, transistor switching circuit, touch key switch and A/D sample circuit.Described central processing unit is provided with I/O port, power input mouth and A/D converter; Described transistor switching circuit connects respectively described A/D sample circuit, described I/O port and described 5V voltage stabilizing chip; Described touch key switch connects described A/D converter and described A/D sample circuit; Described A/D sample circuit is connected to described A/D converter; The output of described 5V voltage stabilizing chip connects power input mouth.The utility model provides a kind of touch key function control circuit of the charged electronic switch in central processor CPU holding state zero-power, the utility model energy savings, simple in structure.
Description
Technical field
The utility model relates to a kind of touch key function control circuit of power electronic switch, specifically a kind of touch key function control circuit of realizing a kind of charged electronic switch of central processor CPU standby zero-power-consumption.
Background technology
At present, circuit power management method adopts normal supply power mode conventionally.Under central processor CPU holding state, still there is certain power consumption in the peripheral circuit of CPU, there is the problem of energy waste, particularly in the situation of time length, energy waste is very large, and the utilance of the energy is very low, how to realize the zero-power of central processor CPU standby to promote energy utilization rate, extremely important, have to be solved.
Utility model content
The purpose of this utility model is the deficiency overcoming in existing product, provides a kind of touch key function control circuit of the charged electronic switch in central processor CPU holding state zero-power, the utility model energy savings, simple in structure.
The touch key function control circuit of a kind of charged electronic switch of the present utility model, comprises central processing unit, 5V voltage stabilizing chip, transistor switching circuit, touch key switch and A/D sample circuit.Described central processing unit is provided with I/O port, power input mouth and A/D converter; Described transistor switching circuit connects respectively described A/D sample circuit, described I/O port and described 5V voltage stabilizing chip; Described touch key switch connects described A/D converter and described A/D sample circuit; Described A/D sample circuit is connected to described A/D converter; The output of described 5V voltage stabilizing chip connects power input mouth.
The utility model also comprises voltage stabilizing didoe ZD, touch key switch comprises touch key interrupteur SW 1, touch key interrupteur SW 2, A/D sample circuit comprises resistance R 5, resistance R 4, resistance R 3, transistor switching circuit comprises NPN triode Q2, PNP triode Q1, resistance R 6, resistance R 7, resistance R 2, resistance R 1, diode D1, the emitter of NPN triode Q2 connects earth signal, contact resistance R6 between the emitter of NPN triode Q2 and base stage, the base stage of NPN triode Q2 connects I/O port by resistance R 7, one end of collector electrode contact resistance R2 of NPN triode Q2 and one end of resistance R 1, the other end of resistance R 2 connects battery, the other end of resistance R 1 connects the base stage of PNP triode Q1, the emitter of PNP triode Q1 connects battery, the collector electrode of PNP triode Q1 connects the negative electrode of voltage stabilizing didoe ZD, the input Vin of the anodic bonding 5V voltage stabilizing chip of voltage stabilizing didoe ZD, one end of resistance R 1 connects diode D1 anode, the negative electrode of diode D1 connects one end of touch key interrupteur SW 2 by resistance R 4, the other end of touch key interrupteur SW 2 connects earth signal by resistance R 5, the other end of touch key interrupteur SW 2 also connects A/D converter, one end of resistance R 3 connects battery, the other end of resistance R 3 connects the negative electrode of diode D1, the other end of described resistance R 3 connects A/D converter by touch key interrupteur SW 1.
5V voltage stabilizing chip of the present utility model is LM7805 chip U1.
The input Vin port of LM7805 chip U1 of the present utility model connects the anode of voltage stabilizing didoe ZD, and the GND port of LM7805 chip U1 connects earth signal, and the output Vout port of LM7805 chip U1 connects power input mouth.
The touch key function control circuit of a kind of charged electronic switch of the present utility model, also comprises polar capacitor C1, polar capacitor C3, capacitor C 2, capacitor C 4, and polar capacitor C1, polar capacitor C3, capacitor C 2, capacitor C 4 are all connected with 5V voltage stabilizing chip.
The beneficial effects of the utility model are as follows: the utility model utilizes transistor switching circuit, touch key switch is realized the touch key function control circuit of the charged electronic switch of central processor CPU holding state zero-power, improved energy utilization rate, saved the energy, adopt the output 5V stabilized voltage power supply that 5V voltage stabilizing chip can be stable, for central processor CPU power supply, utilize polar capacitor C1, polar capacitor C3, capacitor C 2, capacitor C 4, by power filter, obtained the 5V power supply of high-quality, for central processor CPU improves stable 5V power supply, the utility model adopts transistor switching circuit, touch key switch just can be realized electronic switch and control, simple in structure.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, describe the utility model in detail.
Fig. 1 is the utility model system block diagram;
Fig. 2 is the utility model specific embodiment circuit theory diagrams;
Fig. 3 is the circuit theory diagrams of transistor switching circuit of the present utility model.
In figure, 1-central processing unit, 2-A/D transducer, 3-5V voltage stabilizing chip, 4-transistor switching circuit, 5-touch key switch, 7-A/D sample circuit, 11-I/O port, 12-power input mouth.
Embodiment
Below in conjunction with Figure of description, the technical solution of the utility model is described further:
As shown in Figure 1, a kind of touch key function control circuit of charged electronic switch, comprise central processing unit 1, 5V voltage stabilizing chip 3, transistor switching circuit 4, touch key switch 5 and A/D sample circuit 7, central processing unit 1 is provided with I/O port one 1, power input mouth 12, A/D converter 2, transistor switching circuit 4 connects respectively A/D sample circuit 7, I/O port one 1, 5V voltage stabilizing chip 3, touch key switch 5 all connects A/D converter 2, A/D sample circuit 7, A/D sample circuit 7 connects A/D converter 2, the output 31 of 5V voltage stabilizing chip 3 connects power input mouth 12.As Fig. 2, shown in Fig. 3, the utility model also comprises voltage stabilizing didoe ZD, touch key switch 5 comprises touch key interrupteur SW 1, touch key interrupteur SW 2, A/D sample circuit 7 comprises resistance R 5, resistance R 4, resistance R 3, transistor switching circuit 4 comprises NPN triode Q2, PNP triode Q1, resistance R 6, resistance R 7, resistance R 2, resistance R 1, diode D1, the emitter of NPN triode Q2 connects earth signal, contact resistance R6 between the emitter of NPN triode Q2 and base stage, the base stage of NPN triode Q2 connects I/O port by resistance R 7, one end of collector electrode contact resistance R2 of NPN triode Q2 and one end of resistance R 1, the other end of resistance R 2 connects battery, the other end of resistance R 1 connects the base stage of PNP triode Q1, the emitter of PNP triode Q1 connects battery, the collector electrode of PNP triode Q1 connects the negative electrode of voltage stabilizing didoe ZD, the anodic bonding 5V voltage stabilizing chip of voltage stabilizing didoe ZD, one end of resistance R 1 connects diode D1 anode, the negative electrode of diode D1 connects one end of touch key interrupteur SW 2 by resistance R 4, the other end of touch key interrupteur SW 2 connects earth signal by resistance R 5, the other end of touch key interrupteur SW 2 also connects A/D converter 2, one end of resistance R 3 connects battery, the other end of resistance R 3 connects the negative electrode of diode D1, the other end of resistance R 3 connects A/D converter 2 by touch key interrupteur SW 1, that 5V voltage stabilizing chip 3 adopts is LM7805 chip U1, the input Vin port of LM7805 chip U1 connects the anode of voltage stabilizing didoe ZD, the GND port of LM7805 chip connects earth signal, the output Vout port of LM7805 chip U1 connects power input mouth, the utility model also comprises polar capacitor C1, polar capacitor C3, capacitor C 2, capacitor C 4, polar capacitor C1, polar capacitor C3, capacitor C 2, capacitor C 4 is all connected with 5V voltage stabilizing chip 3.
Operation principle of the present utility model is such, as shown in Figure 2, label is that VBat refers to cell voltage, when pressing touch key interrupteur SW 1 or touch key interrupteur SW 2 for the first time, when pressing touch key interrupteur SW 1, due to the dividing potential drop of resistance R 3, the base stage that makes triode Q1 is low level, when pressing touch key interrupteur SW 2, due to resistance R 3, resistance R 4, the dividing potential drop of resistance R 5, the base stage that makes triode Q1 is low level, no matter press thus touch key interrupteur SW 1 or touch key interrupteur SW 2, the base stage of PNP triode Q1 is all low level, PNP triode Q1 conducting so, step-down through voltage stabilizing didoe ZD, LM7805 chip U1 output 5V stabilized voltage power supply, polar capacitor C1, polar capacitor C3, capacitor C 2, capacitor C 4, by power filter, obtained the 5V power supply of high-quality, thereby for central processor CPU provides power supply, after central processor CPU energising, the I/O port output high level of central processor CPU, the base stage of NPN triode Q2 is high level so, and the emitter of NPN triode Q2 connects earth signal, therefore NPN triode Q2 is conducting, now, the current collection of NPN triode Q2 is low level very, the base stage of PNP triode Q1 is also low level so, no matter now touch key interrupteur SW 1 or touch key interrupteur SW 2 presses or releasing orientation, the base stage of PNP triode Q1 is low level always, PNP triode Q1 conducting always so, LM7805 chip U1 keeps output 5V stabilized voltage power supply so.During due to touch key interrupteur SW 1 or touch key interrupteur SW 2, the resistance R 3 of A/D sample circuit 7, resistance R 4, the partial pressure value of resistance R 4 is different, touch key interrupteur SW 2 or touch key interrupteur SW 2 all connect A/D converter 2, the sampled voltage of A/D converter 2 inputs is also different so, digital signal after A/D converter 2 conversions is not identical yet so, to receive the digital signal of A/D converter 2 not identical yet for central processing unit 1 so, so the number of times that central processing unit 1 just can be pressed by identification touch key interrupteur SW 1 or touch key interrupteur SW 2 is realized different control functions, in concrete use, when to identify the number of times of touch key interrupteur SW 1 or touch key interrupteur SW 2 be even number time, central processing unit 1 is in running order, I/O port output low level so, the base stage low level of NPN triode Q2 so, NPN triode Q2 cannot conducting, unclamp touch key interrupteur SW 1 or touch key interrupteur SW 2 this time, PNP triode Q1 also cannot conducting, so, the current collection of PNP triode Q1 is low level very, thereby LM7805 chip U1 cannot export 5V power supply, also cannot be just central processing unit 1 power supply, so whole circuit is just in zero-power state, improved energy utilization rate, saved the energy, the utility model adopts transistor switching circuit, touch key switch just can be realized electronic switch and control, simple in structure.
It should be noted that above what enumerate is only a kind of specific embodiment of the present utility model.Obviously, the utility model is not limited to above embodiment, can also have many distortion.
In a word, all distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model, all should think protection range of the present utility model.
Claims (5)
1. the touch key function control circuit of a charged electronic switch, it is characterized in that, comprise central processing unit (1), 5V voltage stabilizing chip (3), transistor switching circuit (4), touch key switch (5) and A/D sample circuit (7), described central processing unit (1) is provided with I/O port (11), power input mouth (12) and A/D converter (2); Described transistor switching circuit (4) connects respectively described A/D sample circuit (7), described I/O port (11) and described 5V voltage stabilizing chip (3); Described touch key switch (5) connects described A/D converter (2) and described A/D sample circuit (7); Described A/D sample circuit (7) is connected to described A/D converter (2); The output (31) of described 5V voltage stabilizing chip (3) connects power input mouth (12).
2. a kind of touch key function control circuit of charged electronic switch according to claim 1, it is characterized in that, also comprise voltage stabilizing didoe ZD, described touch key switch (5) comprises touch key interrupteur SW 1, touch key interrupteur SW 2, described A/D sample circuit (7) comprises resistance R 5, resistance R 4, resistance R 3, described transistor switching circuit (4) comprises NPN triode Q2, PNP triode Q1, resistance R 6, resistance R 7, resistance R 2, resistance R 1, diode D1, the emitter of described NPN triode Q2 connects earth signal, contact resistance R6 between the emitter of described NPN triode Q2 and base stage, the base stage of described NPN triode Q2 connects I/O port by resistance R 7, one end of collector electrode contact resistance R2 of described NPN triode Q2 and one end of resistance R 1, the other end of described resistance R 2 connects battery, the other end of described resistance R 1 connects the base stage of PNP triode Q1, the emitter of described PNP triode Q1 connects battery, the collector electrode of described PNP triode Q1 connects the negative electrode of described voltage stabilizing didoe ZD, the input Vin of the anodic bonding 5V voltage stabilizing chip of described voltage stabilizing didoe ZD, one end of described resistance R 1 connects diode D1 anode, the negative electrode of described diode D1 connects one end of touch key interrupteur SW 2 by resistance R 4, the other end of described touch key interrupteur SW 2 connects earth signal by resistance R 5, the other end of touch key interrupteur SW 2 also connects A/D converter (2), one end of described resistance R 3 connects battery, the other end of described resistance R 3 connects the negative electrode of diode D1, the other end of described resistance R 3 connects A/D converter (2) by touch key interrupteur SW 1.
3. a kind of touch key function control circuit of charged electronic switch according to claim 2, is characterized in that, described 5V voltage stabilizing chip (3) is LM7805 chip U1.
4. a kind of touch key function control circuit of charged electronic switch according to claim 3, it is characterized in that, the input Vin port of described LM7805 chip U1 connects the anode of voltage stabilizing didoe ZD, the GND port of described LM7805 chip U1 connects earth signal, and the output Vout port of described LM7805 chip U1 connects power input mouth (12).
5. a kind of touch key function control circuit of charged electronic switch according to claim 1, it is characterized in that, also comprise polar capacitor C1, polar capacitor C3, capacitor C 2, capacitor C 4, described polar capacitor C1, polar capacitor C3, capacitor C 2, capacitor C 4 are all connected with 5V voltage stabilizing chip (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420416479.2U CN204031116U (en) | 2014-07-25 | 2014-07-25 | A kind of touch key function control circuit of charged electronic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420416479.2U CN204031116U (en) | 2014-07-25 | 2014-07-25 | A kind of touch key function control circuit of charged electronic switch |
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| Publication Number | Publication Date |
|---|---|
| CN204031116U true CN204031116U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420416479.2U Expired - Fee Related CN204031116U (en) | 2014-07-25 | 2014-07-25 | A kind of touch key function control circuit of charged electronic switch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936443A (en) * | 2017-04-25 | 2017-07-07 | 航天科技控股集团股份有限公司 | The control circuit of multiple key switches is controlled with A/D modes |
| CN107508342A (en) * | 2017-08-14 | 2017-12-22 | 惠州市蓝微电子有限公司 | A kind of lithium battery MCU power supply protection circuits |
| CN110213867A (en) * | 2019-05-31 | 2019-09-06 | 深圳市中昌探伤器材有限公司 | A kind of multifunction switch circuit, Switching method and magnetic powder flaw detector |
-
2014
- 2014-07-25 CN CN201420416479.2U patent/CN204031116U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936443A (en) * | 2017-04-25 | 2017-07-07 | 航天科技控股集团股份有限公司 | The control circuit of multiple key switches is controlled with A/D modes |
| CN107508342A (en) * | 2017-08-14 | 2017-12-22 | 惠州市蓝微电子有限公司 | A kind of lithium battery MCU power supply protection circuits |
| CN110213867A (en) * | 2019-05-31 | 2019-09-06 | 深圳市中昌探伤器材有限公司 | A kind of multifunction switch circuit, Switching method and magnetic powder flaw detector |
| CN110213867B (en) * | 2019-05-31 | 2024-03-15 | 深圳市中昌探伤器材有限公司 | Multifunctional switch circuit, switch switching method and magnetic particle inspection instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20150725 |
|
| EXPY | Termination of patent right or utility model |