CN105867212A - Wake-up circuit for converting low-level signal to high-level signal - Google Patents
Wake-up circuit for converting low-level signal to high-level signal Download PDFInfo
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- CN105867212A CN105867212A CN201610177476.1A CN201610177476A CN105867212A CN 105867212 A CN105867212 A CN 105867212A CN 201610177476 A CN201610177476 A CN 201610177476A CN 105867212 A CN105867212 A CN 105867212A
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- resistance
- wake
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- signal
- level signal
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25341—Single chip programmable controller
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
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Abstract
The invention discloses a wake-up circuit for converting a low-level signal to a high-level signal, and belongs to the field of circuit control. The invention aims at solving problems that more single-chip computer resources are occupied and the sleeping power of a single-chip microcomputer is increased because the low-level signal serves as a wake-up signal of the single-chip microcomputer. The circuit comprises a PNP triode VT1, a resistor R1, a resistor R2, a resistor R3, and a diode RD1. A DC power supply VCC is connected with one end of the resistor R1 and an emitter electrode of the PNP triode VT1 at the same time. The other end of the resistor R1 is connected with one end of the resistor R2 and the base electrode of the PNP triode VT1 at the same time. The other end of the resistor R2 is connected with the anode of the diode RD1, and the cathode of the diode RD1 is connected to a low-level input signal. The collector electrode of the PNP triode VT1 is connected with one end of the resistor R3, and serves as the output end of the wake-up circuit, wherein an output signal serves as a wake-up signal of the single-chip microcomputer. The other end of the resistor R3 is grounded.
Description
Technical field
The invention belongs to field of circuit control.
Background technology
Waking up the signal of single-chip microcomputer at present up is all that high level is effective, if by rigid for wake-up signal for Low level effective, needing to take
Power when more mcu resource and increasing single-chip microcomputer dormancy.
Summary of the invention
The invention aims to solve low level need take more mcu resource and add as single-chip microcomputer wake-up signal
The problem of power during large single sheet machine dormancy, it is provided that a kind of low level signal is converted into the wake-up circuit of high level signal.
Low level signal of the present invention is converted into the wake-up circuit of high level signal, and it includes PNP triode VT1, electricity
Resistance R1, resistance R2, resistance R3 and diode RD1；
DC source VCC is simultaneously connected with one end of resistance R1 and the emitter stage of PNP triode VT1；Resistance R1's is another
One end is simultaneously connected with one end of resistance R2 and the base stage of PNP triode VT1；
The other end of resistance R2 connects the anode of diode RD1, and the negative electrode of diode RD1 accesses low imput；
The colelctor electrode of PNP triode VT1 connects one end of resistance R3, and as the outfan of wake-up circuit, its output
Signal is as the wake-up signal of single-chip microcomputer；
The other end ground connection of resistance R3.
Advantages of the present invention: the present invention is converted into high level low level signal wake-up signal and solves reduction mcu resource,
The problem of power during dormancy, and make that wake-up signal is unified to be turned to high level and wake up up.
Accompanying drawing explanation
Fig. 1 is the physical circuit figure of tradition not circuit；
Fig. 2 is the physical circuit figure that low level signal of the present invention is converted into the wake-up circuit of high level signal.
Detailed description of the invention
Detailed description of the invention one: present embodiment is described below in conjunction with Fig. 1 and Fig. 2, low level signal described in present embodiment
Being converted into the wake-up circuit of high level signal, it includes PNP triode VT1, resistance R1, resistance R2, resistance R3
With diode RD1；
DC source VCC is simultaneously connected with one end of resistance R1 and the emitter stage of PNP triode VT1；Resistance R1's is another
One end is simultaneously connected with one end of resistance R2 and the base stage of PNP triode VT1；
The other end of resistance R2 connects the anode of diode RD1, and the negative electrode of diode RD1 accesses low imput；
The colelctor electrode of PNP triode VT1 connects one end of resistance R3, and as the outfan of wake-up circuit, its output
Signal is as the wake-up signal of single-chip microcomputer；
The other end ground connection of resistance R3.
The ratio of resistance R1 resistance and resistance R2 resistance meets following relation:Wherein U is PNP
Audion VT1 conducting voltage.
Present embodiment provides the concrete resistance relations of distribution of R1, R2: resistance R1 resistance is resistance R2 resistance
10 times, the circuit in actual application is adjusted according to practical situation, is not limited to this method of salary distribution.
Traditional not circuit is as it is shown in figure 1, traditional not circuit may not apply to wake up this function of single-chip microcomputer up, when defeated
When entering low level, export high level；During input high level, output low level；When inputting unsettled, the base stage oncontacting of VT10
Generating pressure, VT10 ends, and exports high level.
Just because of traditional not circuit is when input signal unsettled (i.e. without input signal), output signal is high level, no
Meet the demand that wake-up signal is unified.Therefore cannot function as the wake-up circuit of single-chip microcomputer.
Such as: wake-up signal is that low effectively (i.e. during low level input, output signal is high level；Input signal is high level
Or time unsettled, export high level), tradition not circuit just cannot solve this problem.
And the circuit of present embodiment design just can solve this problem.As in figure 2 it is shown, when input signal is low, defeated
Go out high level；Input signal is unsettled or when being high level, output low level signal.
Operation principle:
1, during input low level, R1 Yu R2 dividing potential drop, owing to R1=10*R2, R1 both end voltage gets the biggest of VCC
Portion voltage, is loaded with enough trigger voltages to the base stage of VT1, and VT1 turns on, then export high level；
2, during input high level, the voltage difference at R1 two ends is the least or be zero, it is impossible to load trigger voltage to the base stage of VT1,
VT1 ends, output low level；
3, input signal is unsettled, and R1 both end voltage is identical, it is impossible to load trigger voltage to the base stage of VT1, and VT1 ends,
Output low level；
This control strategy has complied fully with the rule providing wake-up signal for single-chip microcomputer.And the circuit structure of present embodiment is very
Simply, the internal resource of single-chip microcomputer it is not take up again.
Claims (2)
1. low level signal is converted into the wake-up circuit of high level signal, it is characterised in that it include PNP triode VT1,
Resistance R1, resistance R2, resistance R3 and diode RD1；
DC source VCC is simultaneously connected with one end of resistance R1 and the emitter stage of PNP triode VT1；Another of resistance R1
End is simultaneously connected with one end of resistance R2 and the base stage of PNP triode VT1；
The other end of resistance R2 connects the anode of diode RD1, and the negative electrode of diode RD1 accesses low imput；
The colelctor electrode of PNP triode VT1 connects one end of resistance R3, and as the outfan of wake-up circuit, it exports letter
Number as the wake-up signal of single-chip microcomputer；
The other end ground connection of resistance R3.
The most according to claim 1, low level signal is converted into the wake-up circuit of high level signal, it is characterised in that resistance
The ratio of R1 resistance and resistance R2 resistance meets following relation:Wherein U is PNP triode
VT1 conducting voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610177476.1A CN105867212A (en) | 2016-03-24 | 2016-03-24 | Wake-up circuit for converting low-level signal to high-level signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610177476.1A CN105867212A (en) | 2016-03-24 | 2016-03-24 | Wake-up circuit for converting low-level signal to high-level signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105867212A true CN105867212A (en) | 2016-08-17 |
Family
ID=56624861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610177476.1A Pending CN105867212A (en) | 2016-03-24 | 2016-03-24 | Wake-up circuit for converting low-level signal to high-level signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105867212A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554173A (en) * | 2019-09-23 | 2019-12-10 | 三诺生物传感股份有限公司 | Blood glucose meter device |
| CN110632285A (en) * | 2019-09-23 | 2019-12-31 | 三诺生物传感股份有限公司 | Blood glucose meter device |
| CN113415249A (en) * | 2021-07-29 | 2021-09-21 | 重庆长安新能源汽车科技有限公司 | Domain controller turn-off path circuit and vehicle |
| CN114337222A (en) * | 2021-12-28 | 2022-04-12 | 深圳欧陆通电子股份有限公司 | Control circuit and device for server power supply signal |
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| US6408396B1 (en) * | 2001-05-04 | 2002-06-18 | Intel Corporation | Method and apparatus for supporting wake-on voice and wake-on MIC technology |
| CN2650213Y (en) * | 2003-10-14 | 2004-10-20 | 无敌科技(西安)有限公司 | Personal digital assistant transmittig and waking-up device |
| DE102008013243A1 (en) * | 2008-03-08 | 2009-09-10 | Valeo Schalter Und Sensoren Gmbh | Electrical circuit i.e. wake-up circuit, arrangement for electronic control and regulation device of motor vehicle, has functional group on rising flank supplying switching voltage to transistor, where rising flank is inlet variable |
| CN203920642U (en) * | 2014-06-04 | 2014-11-05 | 华域汽车电动系统有限公司 | There is dormancy and wake-up control circuit that voltage keeps function |
| CN104796628A (en) * | 2015-04-17 | 2015-07-22 | 广州炫智电子科技有限公司 | Video signal recognition circuit |
| CN104834241A (en) * | 2015-05-15 | 2015-08-12 | 深圳市施美森科技有限公司 | Digital input circuit |
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2016
- 2016-03-24 CN CN201610177476.1A patent/CN105867212A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6408396B1 (en) * | 2001-05-04 | 2002-06-18 | Intel Corporation | Method and apparatus for supporting wake-on voice and wake-on MIC technology |
| CN2650213Y (en) * | 2003-10-14 | 2004-10-20 | 无敌科技(西安)有限公司 | Personal digital assistant transmittig and waking-up device |
| DE102008013243A1 (en) * | 2008-03-08 | 2009-09-10 | Valeo Schalter Und Sensoren Gmbh | Electrical circuit i.e. wake-up circuit, arrangement for electronic control and regulation device of motor vehicle, has functional group on rising flank supplying switching voltage to transistor, where rising flank is inlet variable |
| CN203920642U (en) * | 2014-06-04 | 2014-11-05 | 华域汽车电动系统有限公司 | There is dormancy and wake-up control circuit that voltage keeps function |
| CN104796628A (en) * | 2015-04-17 | 2015-07-22 | 广州炫智电子科技有限公司 | Video signal recognition circuit |
| CN104834241A (en) * | 2015-05-15 | 2015-08-12 | 深圳市施美森科技有限公司 | Digital input circuit |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554173A (en) * | 2019-09-23 | 2019-12-10 | 三诺生物传感股份有限公司 | Blood glucose meter device |
| CN110632285A (en) * | 2019-09-23 | 2019-12-31 | 三诺生物传感股份有限公司 | Blood glucose meter device |
| CN110554173B (en) * | 2019-09-23 | 2020-12-08 | 三诺生物传感股份有限公司 | Blood glucose meter device |
| CN110632285B (en) * | 2019-09-23 | 2022-09-06 | 三诺生物传感股份有限公司 | Blood glucose meter device |
| CN113415249A (en) * | 2021-07-29 | 2021-09-21 | 重庆长安新能源汽车科技有限公司 | Domain controller turn-off path circuit and vehicle |
| CN113415249B (en) * | 2021-07-29 | 2022-05-03 | 重庆长安新能源汽车科技有限公司 | Domain controller turn-off path circuit and vehicle |
| CN114337222A (en) * | 2021-12-28 | 2022-04-12 | 深圳欧陆通电子股份有限公司 | Control circuit and device for server power supply signal |
| CN114337222B (en) * | 2021-12-28 | 2024-02-02 | 深圳欧陆通电子股份有限公司 | Control circuit and device for server power supply signal |
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Application publication date: 20160817 |