CN105911904A - Touch switch device circuit, control circuit and control method - Google Patents
Touch switch device circuit, control circuit and control method Download PDFInfo
- Publication number
- CN105911904A CN105911904A CN201610220386.6A CN201610220386A CN105911904A CN 105911904 A CN105911904 A CN 105911904A CN 201610220386 A CN201610220386 A CN 201610220386A CN 105911904 A CN105911904 A CN 105911904A
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- Prior art keywords
- key
- soft
- audion
- triode
- touch control
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005662 electromechanics Effects 0.000 claims description 12
- 230000001052 transient effect Effects 0.000 claims description 10
- 230000001629 suppression Effects 0.000 claims description 9
- 230000005669 field effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 238000009790 rate-determining step (RDS) Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- 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
- G05B19/0423—Input/output
-
- 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
- G05B2219/21—Pc I-O input output
- G05B2219/21111—Each module has a push button to bypass control and switch module on
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a touch switch device circuit, control circuit and control method. The touch switch device circuit comprises a touch electrode slice, a triode Q1, a triode Q2, a resistor R1, a resistor R2 and a power source, wherein the triode Q2 is an NPN type triode, one end of the touch electrode slice is connected with the power source while the other of the touch electrode slice is connected with a base electrode of the triode Q2, one end of the transistor R1 is connected with the power source while the other end of the transistor R1 is connected with a base electrode of the triode Q1, an emitting electrode of the triode Q1 is connected with the power source, a collector electrode of the triode Q1 is connected with an output KEY end, an emitting electrode of the triode Q2 is connected with the earth, a collector electrode of the triode Q2 is connected with the base electrode of the triode Q1, one end of R2 is connected with the base electrode of the triode Q2, and the other end of R2 is connected with the earth.
Description
Technical field
The present invention relates to soft-touch control field, particularly to the circuit of soft-touch control machine, control circuit and
Its control method.
Background technology
In life, the switching on and shutting down that most of Low-voltage Electronic products use are mechanical keyswitch machine, but
There is serious loss and life problems in mechanical key, after certain access times, and mechanical key
Switching on and shutting down will be lost efficacy.
Summary of the invention
It is an object of the invention to provide a kind of outward appearance clean and tidy, electrode slice can flush with product surface, length
The circuit of soft-touch control machine, control circuit and the control method thereof in life-span.
For achieving the above object, the present invention adopts the following technical scheme that, soft-touch control electromechanics road, including
Touching electrode, audion Q1, audion Q2, resistance R1, resistance R2 and power supply, audion
Q2 is NPN type triode, and audion Q1 is PNP type triode, and Touching electrode one end connects
Power supply, the base stage of other end connecting triode Q2, resistance R1 one end connects power supply, and the other end connects
Audion Q1 base stage, audion Q1 emitter stage connects power supply, and colelctor electrode connects output KEY end,
Audion Q2 grounded emitter, colelctor electrode connecting triode Q1 base stage, R2 one end connecting triode
Q2 base stage, other end ground connection.
In some embodiments, Transient Suppression Diode D1 and D2, Touching electrode two are also included
End connects Transient Suppression Diode D1 and D2 negative pole respectively, and Transient Suppression Diode D1 and D2 is just
Pole ground connection respectively.TVS diode has the response time (subnanosecond level) and at a relatively high wave being exceedingly fast
Gushing absorbability, when the high energy impact events of moment is stood at its two ends, TVS can be with high speed
The resistance value of go-and-retum is become Low ESR from high impedance, to absorb an instantaneous large-current, thus handle
Its both end voltage strangulation one predetermined numerically, thus protection component below is not by wink
The impact of state high voltage spikes.
In some embodiments, resistance R3, resistance R3 one end connecting triode Q1 current collection is also included
Pole, other end ground connection, between output KEY end connecting triode Q1 colelctor electrode and R3.
Soft-touch control machine control circuit, including soft-touch control electromechanics road and control circuit, soft-touch control machine
Circuit exports low and high level signal by KEY end to control circuit, and control circuit includes that monolithic is mechanical, electrical
Source, audion Q4 and field effect transistor Q3, single-chip I/O mouth connect respectively KEY_MCU end and
VOUT_CTL end, the load of KEY_MCU end connects KEY end, and the load of KEY end connects three poles
Pipe Q4 base stage, VOUT_CTL end load connecting triode Q4 base stage, power source loads connects three poles
Pipe Q4 colelctor electrode, tri-electrodes of field effect transistor Q3 connect respectively power supply, audion Q4 colelctor electrode and
Single-chip microcomputer VMCU end.
In some embodiments, also including USB_VCC charging end, USB_VCC charging end is born
Carry connecting triode Q4 base stage.
In some embodiments, also include that diode D3 and D4, diode D3 and D4 connect respectively
Connect VOUT_CTL end and USB_VCC charging end.
Touch switch circuit control method, after single-chip microcomputer powers on, rate-determining steps includes:
A, single-chip microcomputer initialize and detect KEY end level, when KEY end input high level, carry out
Start processes；
It is low level that B, KEY end returns, and single chip circuit is properly functioning；
C, when single-chip microcomputer detects the rising edge of KEY end again, carry out shutdown process.
In some embodiments, in step A, single-chip microcomputer powers on, and detects that KEY end is low electricity
Flat output, then be charged processing.
The invention have the benefit that inventive touch on/off circuit and on/off circuit control method
Simple in construction, it is possible to achieve soft-touch control machine, charging power up function and outward appearance are clean and tidy, and electrode slice is permissible
Flush with product surface, soft-touch control machine circuit lifetime long.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of inventive touch on/off circuit；
Fig. 2 is the circuit diagram of inventive touch switching on and shutting down control circuit；
Fig. 3 is inventive touch on-off circuit control method step schematic diagram.
Detailed description of the invention
The present invention is further detailed explanation below in conjunction with the accompanying drawings.
As it is shown in figure 1, soft-touch control electromechanics road, soft-touch control electromechanics road, including Touching electrode,
Audion Q1, audion Q2, resistance R1, resistance R2 and power supply, audion Q2 is NPN type
Audion, audion Q1 is PNP type triode, and Touching electrode one end connects power supply, the other end
The base stage of connecting triode Q2, resistance R1 one end connects power supply, other end connecting triode Q1 base
Pole, audion Q1 emitter stage connects power supply, and colelctor electrode connects output KEY end, and audion Q2 sends out
Emitter grounding, colelctor electrode connecting triode Q1 base stage, R2 one end connecting triode Q2 base stage, separately
One end ground connection.Also include resistance R3, resistance R3 one end connecting triode Q1 colelctor electrode, another termination
Ground, between output KEY end connecting triode Q1 colelctor electrode and R3.
P1 is one group of Touching electrode, and when human body does not touches P1, resistance R2 upper end is suspended, three
Pole pipe Q1, audion Q2 are in cut-off state, KEY end output low level.As human body touch P1
Time, owing to the access of human body resistance makes the upper and lower two metal sheets of P1 connect, audion Q2 obtains base stage electricity
Conductance leads to, and audion Q1 turns on, KEY end output high level.
Also include that Transient Suppression Diode D1 and D2, Touching electrode two ends connect transient state suppression respectively
Diode D1 and D2, Transient Suppression Diode D1 and D2 ground connection respectively, D1 and D2 is TVS
Diode.D1 and D2 is installed, places electrostatic breakdown circuit, it is ensured that the normal work of circuit.
TVS diode has the response time (subnanosecond level) and at a relatively high surge absoption energy being exceedingly fast
Power, when the high energy impact events of moment is stood at its two ends, TVS can be with high speed go-and-retum
Resistance value become Low ESR from high impedance, to absorb an instantaneous large-current, thus its two ends
Voltage clamping one predetermined numerically, thus protection component below is by high voltage transient point
The impact of peak pulse.
As in figure 2 it is shown, soft-touch control machine control circuit, including soft-touch control electromechanics road and control circuit,
Soft-touch control electromechanics road exports low and high level signal by KEY end to control circuit, and control circuit includes
Single-chip microcomputer, power supply, audion Q4 and field effect transistor Q3, single-chip I/O mouth connects KEY_MCU respectively
End and VOUT_CTL end, the load of KEY_MCU end connects KEY end, and the load of KEY end connects
Audion Q4 base stage, VOUT_CTL end load connecting triode Q4 base stage, power source loads connects
Audion Q4 colelctor electrode, tri-electrodes of field effect transistor Q3 connect power supply, audion Q4 current collection respectively
Pole and single-chip microcomputer VMCU end, also include USB_VCC charging end, and USB_VCC charging end loads
Connecting triode Q4 base stage.
Also include diode D3 and D4, diode D3 and D4 connect respectively VOUT_CTL end and
USB_VCC charging end.
Wherein KEY end is connected with the KEY end in Fig. 1.KEY_MCU and VOUT_CTL end
It is connected to single-chip I/O mouth；It is respectively used to key-press input detection and switching on and shutting down control circuit.USB_VCC
Termination charging input.Operation principle is as follows:
When Fig. 1 electric circuit inspection is to when having human body touch P1, and KEY exports high level, the Q4 in Fig. 2
Conducting, so that Q3 conducting, VMCU output voltage, single-chip microcomputer powers on and brings into operation；Monolithic
Machine examination measures KEY_MCU disconnection has high level to input, then judge it is human body touch switch, monolithic
Machine VOUT_CTL exports high level so that Q3 is persistently held on.Now basic human body is not touching
Touching switch, circuit also can normally work.
After single-chip microcomputer work, if the rising edge (from low to high) of KEY end again being detected,
VOUT_CTL output low level, Q3 ends, it is achieved shutdown circuit.
If there being charging voltage to access circuit, then USB_VCC end is high level so that Q4 turns on,
Q3 turns on, and VMCU end obtains voltage, it is achieved charging power up function.
As it is shown on figure 3,
Touch switch circuit control method, after single-chip microcomputer powers on, rate-determining steps includes:
S1, single-chip microcomputer power on, initializes single-chip microcomputer, and detection KEY whether high level, if it is, enter
Row start processes, then perform S2, if it is not, then be charged processing；
S2, KEY end recovers low level, normal circuit operation, and processes other affairs, persistently detects
KEY end whether high level, if it is, perform S3, otherwise continues S2；
S3, execution shutdown process.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, it is also possible to make some deformation and improvement,
These broadly fall into protection scope of the present invention.
Claims (8)
1. soft-touch control electromechanics road, it is characterised in that include Touching electrode, audion Q1, three
Pole pipe Q2, resistance R1, resistance R2 and power supply, described audion Q2 is NPN type triode, institute
Stating audion Q1 is PNP type triode, and described Touching electrode one end connects power supply, and the other end is even
Connecing the base stage of audion Q2, described resistance R1 one end connects power supply, other end connecting triode Q1
Base stage, described audion Q1 emitter stage connection power supply, colelctor electrode connection output KEY end, described three
Pole pipe Q2 grounded emitter, colelctor electrode connecting triode Q1 base stage, described R2 one end connects three poles
Pipe Q2 base stage, other end ground connection.
Soft-touch control electromechanics road the most according to claim 1, it is characterised in that also include transient state
Suppression diode D1 and D2, described Touching electrode two ends connect Transient Suppression Diode D1 respectively
With the negative pole of D2, the positive pole of Transient Suppression Diode D1 and D2 ground connection respectively.
Soft-touch control electromechanics road the most according to claim 1, it is characterised in that also include resistance
R3, described resistance R3 one end connecting triode Q1 colelctor electrode, other end ground connection, described output KEY
Between end connecting triode Q1 colelctor electrode and R3.
4. soft-touch control machine control circuit, it is characterised in that include soft-touch control electromechanics road and control electricity
Road, described soft-touch control electromechanics road exports low and high level signal by KEY end to control circuit, described
Control circuit includes single-chip microcomputer, power supply, audion Q4 and field effect transistor Q3, described single-chip I/O mouth
Connecting KEY_MCU end and VOUT_CTL end respectively, the load of described KEY_MCU end connects KEY
End, described KEY end load connecting triode Q4 base stage, the load of described VOUT_CTL end connects
Audion Q4 base stage, described power source loads connecting triode Q4 colelctor electrode, described field effect transistor Q3
Three electrodes connect power supply, audion Q4 colelctor electrode and single-chip microcomputer VMCU end respectively.
Soft-touch control machine control circuit the most according to claim 4, it is characterised in that also include
USB_VCC charging end, described USB_VCC charging end load connecting triode Q4 base stage.
Soft-touch control machine control circuit the most according to claim 5, it is characterised in that also include
Diode D3 and D4, described diode D3 and D4 connect VOUT_CTL end and USB_VCC respectively
Charging end.
7. touch switch circuit control method, it is characterised in that include as claims 1 to 3 is arbitrary
Soft-touch control machine control circuit described in described soft-touch control electromechanics road and claim 5 or 6, institute
State rate-determining steps after single-chip microcomputer powers on to include:
A, single-chip microcomputer initialize and detect KEY end level, when KEY end input high level, carry out
Start processes；
It is low level that B, KEY end returns, and single chip circuit is properly functioning；
C, when single-chip microcomputer detects the rising edge of KEY end again, carry out shutdown process.
Touch switch circuit control method the most according to claim 7, it is characterised in that A walks
In Zhou, single-chip microcomputer powers on, and detects that KEY end is low level output, then be charged processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610220386.6A CN105911904A (en) | 2016-04-11 | 2016-04-11 | Touch switch device circuit, control circuit and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610220386.6A CN105911904A (en) | 2016-04-11 | 2016-04-11 | Touch switch device circuit, control circuit and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105911904A true CN105911904A (en) | 2016-08-31 |
Family
ID=56744828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610220386.6A Pending CN105911904A (en) | 2016-04-11 | 2016-04-11 | Touch switch device circuit, control circuit and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105911904A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799924A (en) * | 2018-12-25 | 2019-05-24 | 努比亚技术有限公司 | False-touch prevention control method and device, mobile terminal, computer readable storage medium |
| CN110289845A (en) * | 2019-06-22 | 2019-09-27 | 潘胜琼 | Circuit for preventing electronic product from false triggering |
| CN110932706A (en) * | 2019-11-19 | 2020-03-27 | 广东天波信息技术股份有限公司 | A control circuit to avoid leakage current of intelligent hardware shutdown |
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| CN103095264A (en) * | 2011-10-28 | 2013-05-08 | 成都高新区尼玛电子产品外观设计工作室 | Opening and closing machine circuit adopting two triodes |
| CN103699199A (en) * | 2013-12-20 | 2014-04-02 | 青岛歌尔声学科技有限公司 | A power on/off control device for electronic equipment and an electronic equipment |
| CN204302733U (en) * | 2014-12-29 | 2015-04-29 | 深圳乐行天下科技有限公司 | A kind of ON-OFF control circuit based on touch controlled key |
| CN104639139A (en) * | 2013-11-14 | 2015-05-20 | 于红勇 | Zero-power-consumption switching circuit |
| CN205017207U (en) * | 2015-09-25 | 2016-02-03 | Tcl通力电子（惠州）有限公司 | Switching on and shutting down control circuit and switching power supply |
-
2016
- 2016-04-11 CN CN201610220386.6A patent/CN105911904A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095264A (en) * | 2011-10-28 | 2013-05-08 | 成都高新区尼玛电子产品外观设计工作室 | Opening and closing machine circuit adopting two triodes |
| CN104639139A (en) * | 2013-11-14 | 2015-05-20 | 于红勇 | Zero-power-consumption switching circuit |
| CN103699199A (en) * | 2013-12-20 | 2014-04-02 | 青岛歌尔声学科技有限公司 | A power on/off control device for electronic equipment and an electronic equipment |
| CN204302733U (en) * | 2014-12-29 | 2015-04-29 | 深圳乐行天下科技有限公司 | A kind of ON-OFF control circuit based on touch controlled key |
| CN205017207U (en) * | 2015-09-25 | 2016-02-03 | Tcl通力电子（惠州）有限公司 | Switching on and shutting down control circuit and switching power supply |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799924A (en) * | 2018-12-25 | 2019-05-24 | 努比亚技术有限公司 | False-touch prevention control method and device, mobile terminal, computer readable storage medium |
| CN109799924B (en) * | 2018-12-25 | 2023-01-13 | 安徽龙运智能科技有限公司 | False touch prevention control method and device, mobile terminal and computer readable storage medium |
| CN110289845A (en) * | 2019-06-22 | 2019-09-27 | 潘胜琼 | Circuit for preventing electronic product from false triggering |
| CN110932706A (en) * | 2019-11-19 | 2020-03-27 | 广东天波信息技术股份有限公司 | A control circuit to avoid leakage current of intelligent hardware shutdown |
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Application publication date: 20160831 |
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