CN109683735A - A kind of touch screen wake-up circuit, method and electronic lock - Google Patents
A kind of touch screen wake-up circuit, method and electronic lock Download PDFInfo
- Publication number
- CN109683735A CN109683735A CN201811279692.2A CN201811279692A CN109683735A CN 109683735 A CN109683735 A CN 109683735A CN 201811279692 A CN201811279692 A CN 201811279692A CN 109683735 A CN109683735 A CN 109683735A
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- touch screen
- mcu
- analog switch
- screen
- touch
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 13
- 230000007423 decrease Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3293—Power saving characterised by the action undertaken by switching to a less power-consuming processor, e.g. sub-CPU
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Position Input By Displaying (AREA)
- Electronic Switches (AREA)
Abstract
The present invention provides a kind of touch screen wake-up circuit, method and electronic locks, comprising: analog switch: being electrically connected with the signal wire of touch screen, power supply line；Screen driving plate: being electrically connected with the analog switch, including the first MCU；2nd MCU: it is electrically connected with the analog switch；Wherein, under touch screen ideal case, 2nd MCU controls the analog switch, it is electrically connected the signal wire of touch screen, power supply line with the 2nd MCU, instruction is sent to touch screen by the 2nd MCU and is powered to power supply line, and touch screen cyclic switching between low-power consumption mode and scanning touch signal is made；After touch screen is waken up, the 2nd MCU controls the analog switch, is electrically connected the signal wire of touch screen with the screen driving plate.Present invention decreases power consumption, it is fast that touch screen wakes up speed, while can also timely feedback operation of the user to touch screen.
Description
Technical field
The present invention relates to electronic circuit fields, and in particular, to a kind of touch screen wake-up circuit and method and electronic lock.
Background technique
In order to reduce the energy consumption of electronic equipment, within a certain period of time without operation after allow electronic equipment touch screen enter to
Machine dormant state is current conventional technology.Under conventional situation, signal, the power supply of touch screen make to be connected directly between screen drive
On movable plate.Although the power supply for cutting off screen reduces the whole energy consumption of electronic equipment, screen driving into standby suspend mode
The power consumption of plate is still relatively high, and when the wake-up mode that powers on again of power supply for recycling cutting touch screen needs longer initialization
Between.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of touch screen wake-up circuit and methods.
A kind of touch screen wake-up circuit provided according to the present invention, comprising:
Analog switch: it is electrically connected with the signal wire of touch screen, power supply line；
Screen driving plate: being electrically connected with the analog switch, and the screen driving plate includes the first MCU；
2nd MCU: it is electrically connected with the analog switch；
Wherein, under touch screen ideal case, the 2nd MCU controls the analog switch, make touch screen signal wire,
Power supply line is electrically connected with the MCU, is sent instruction to touch screen by the 2nd MCU and is powered to power supply line, makes to touch
Screen cyclic switching between low-power consumption mode and scanning touch signal；
After touch screen is waken up, the 2nd MCU controls the analog switch, makes the signal wire and the screen of touch screen
Curtain driving plate electrical connection.
Preferably, the voltage of the first MCU output is greater than the voltage of the 2nd MCU output.
Preferably, touch screen cyclic switching between low-power consumption mode and scanning touch signal is made to include: by described second
MCU sends instructions enter into low-power consumption mode to touch screen, and by the touch signal on the frequency detected signal line of setting, is examining
In the state of measuring touch signal, the 2nd MCU controls the analog switch and switches to the first MCU power supply, conversely, institute
It states the 2nd MCU and is again introduced into low-power consumption mode to touch screen transmission instruction.
Preferably, the 2nd MCU sends instructions enter into low-power consumption mode to touch screen by I2C bus.
Preferably, the voltage of the 2nd MCU output is 3V, the voltage of the first MCU output is 3.7V.
A kind of touch screen awakening method provided according to the present invention, using touch screen wake-up circuit, the touch screen is waken up
Circuit includes:
Analog switch: it is electrically connected with the signal wire of touch screen, power supply line；
Screen driving plate: being electrically connected with the analog switch, and the screen driving plate includes the first MCU；
2nd MCU: it is electrically connected with the analog switch；
Wherein, under touch screen ideal case, the 2nd MCU controls the analog switch, make touch screen signal wire,
Power supply line is electrically connected with the 2nd MCU, is sent instruction to touch screen by the 2nd MCU and is powered to power supply line, makes
Touch screen cyclic switching between low-power consumption mode and scanning touch signal；
After touch screen is waken up, the 2nd MCU controls the analog switch, makes the signal wire and the screen of touch screen
Curtain driving plate electrical connection.
Preferably, the voltage of the first MCU output is greater than the voltage of the 2nd MCU output.
Preferably, touch screen cyclic switching between low-power consumption mode and scanning touch signal is made to include: by described second
MCU sends instructions enter into low-power consumption mode to touch screen, and by the touch signal on the frequency detected signal line of setting, is examining
In the state of measuring touch signal, the 2nd MCU controls the analog switch and switches to the first MCU power supply, conversely, institute
It states the 2nd MCU and is again introduced into low-power consumption mode to touch screen transmission instruction.
Preferably, the 2nd MCU sends instructions enter into low-power consumption mode to touch screen by I2C bus.
A kind of electronic lock provided according to the present invention, including above-mentioned touch screen wake-up circuit.
1, in the case where touch screen is standby, signal wire, the power supply line of touch screen are electrically connected with low speed MCU, by lower electricity
The low speed MCU of pressure powers and enters low-power consumption mode；In the case where touch screen is waken up, the signal wire and screen of touch screen are driven
Movable plate connection reduces the initialization time of screen, it is fast that touch screen wakes up speed to reduce power consumption；
2, under low-power consumption mode, screen is waken up using low speed MCU power supply, circulation and detects touch signal, is being detected
High speed MCU power supply is switched to when touch signal, it is ensured that timely feedback operation of the user to touch screen.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the connection schematic diagram of analog switch.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
As shown in Figure 1, a kind of touch screen wake-up circuit provided by the invention, comprising:
Analog switch: it is electrically connected with the signal wire of touch screen, power supply line；
Screen driving plate: being electrically connected with analog switch, and screen driving plate includes high speed MCU；
Low speed MCU: it is electrically connected with analog switch；
Wherein, under touch screen ideal case, low speed MCU controls analog switch, make the signal wire of touch screen, power supply line with
Low speed MCU electrical connection sends instruction to touch screen by low speed MCU and powers to power supply line, makes touch screen in low-power consumption mould
Cyclic switching between formula (such as included deep sleep function of touch screen: deep sleep) and scanning touch signal；
After touch screen is waken up, low speed MCU controls analog switch, and the signal wire of touch screen is made to be electrically connected with screen driving plate
It connects.
Wherein, the voltage of high speed MCU output is greater than the voltage of low speed MCU output.Make touch screen in low-power consumption mode and sweeps
Retouching cyclic switching between touch signal includes: to send instructions enter into low-power consumption mould to touch screen by I2C bus from low speed MCU
Formula, and by the touch signal on the frequency detected signal line of setting, in the state of detecting touch signal, low speed MCU control
Molding intends switching to high speed MCU and powers, conversely, low speed MCU, which sends instruction to touch screen, is again introduced into low-power consumption mode.
As shown in Fig. 2, power supply line, that is, U17 MCU+3V, DTPVDD of touch screen.GND be it is public, power supply line and SDA,
SCL is the same, with the selection of analog switch, can low speed MCU power supply (MCU+3V) and high speed MCU power supply (DTPVDD) it
Between switch.Because the voltage of high speed MCU is higher, power for 3.7V, than 3V closer to the cell voltage of touch screen, therefore converts effect
Rate can be relatively high, guarantees that operation of the user to touch screen can be timely feedbacked under low-power consumption mode.The chip of touch screen from
Low power consumpting state to wake up needed for time be it is extremely short, can thus have more times allow touch screen work in low-power consumption
State.After touch screen is waken up, the signal wire of touch screen is connect by MCU control analog switch with screen driving plate.This hair
The bright contact action that in the case where driving it is not necessary to modify touch screen, compatibility is commonly designed under method.
Above-mentioned touch screen wake-up circuit can be applied to have the electronic lock of screen or other electronics with screen are set
It is standby upper.
The present invention also provides a kind of touch screen awakening methods, using touch screen wake-up circuit, the touch screen wake-up circuit
Include:
Screen driving plate: being electrically connected with analog switch, and screen driving plate includes high speed MCU；
Low speed MCU: it is electrically connected with analog switch；
Wherein, under touch screen ideal case, low speed MCU controls analog switch, make the signal wire of touch screen, power supply line with
Low speed MCU electrical connection sends instruction to touch screen by low speed MCU and powers to power supply line, makes touch screen in low-power consumption mould
Cyclic switching between formula (such as included deep sleep function of touch screen: deep sleep) and scanning touch signal；
After touch screen is waken up, low speed MCU controls analog switch, and the signal wire of touch screen is made to be electrically connected with screen driving plate
It connects.
Wherein, the voltage of high speed MCU output is greater than the voltage of low speed MCU output.Make touch screen in low-power consumption mode and sweeps
Retouching cyclic switching between touch signal includes: to send instructions enter into low-power consumption mould to touch screen by I2C bus from low speed MCU
Formula, and by the touch signal on the frequency detected signal line of setting, in the state of detecting touch signal, low speed MCU control
Molding intends switching to high speed MCU and powers, conversely, low speed MCU, which sends instruction to touch screen, is again introduced into low-power consumption mode.
As shown in Fig. 2, power supply line, that is, U17 MCU+3V, DTPVDD of touch screen.GND be it is public, power supply line and SDA,
SCL is the same, with the selection of analog switch, can low speed MCU power supply (MCU+3V) and high speed MCU power supply (DTPVDD) it
Between switch.Because the voltage of high speed MCU is higher, power for 3.7V, than 3V closer to the cell voltage of touch screen, therefore converts effect
Rate can be relatively high, guarantees that operation of the user to touch screen can be timely feedbacked under low-power consumption mode.The chip of touch screen from
Low power consumpting state to wake up needed for time be it is extremely short, can thus have more times allow touch screen work in low-power consumption
State.After touch screen is waken up, the signal wire of touch screen is connect by MCU control analog switch with screen driving plate.This hair
The bright contact action that in the case where driving it is not necessary to modify touch screen, compatibility is commonly designed under method.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. a kind of touch screen wake-up circuit characterized by comprising
Analog switch: it is electrically connected with the signal wire of touch screen, power supply line；
Screen driving plate: being electrically connected with the analog switch, and the screen driving plate includes the first MCU；
2nd MCU: it is electrically connected with the analog switch；
Wherein, under touch screen ideal case, the 2nd MCU controls the analog switch, makes signal wire, the power supply of touch screen
Line is electrically connected with the MCU, is sent instruction to touch screen by the 2nd MCU and is powered to power supply line, touch screen is made to exist
Cyclic switching between low-power consumption mode and scanning touch signal；
After touch screen is waken up, the 2nd MCU controls the analog switch, drives the signal wire of touch screen and the screen
Movable plate electrical connection.
2. touch screen wake-up circuit according to claim 1, which is characterized in that the voltage of the first MCU output is greater than
The voltage of the 2nd MCU output.
3. touch screen wake-up circuit according to claim 2, which is characterized in that make touch screen in low-power consumption mode and scanning
Cyclic switching includes: to send instructions enter into low-power consumption mode from the 2nd MCU to touch screen, and pass through and set between touch signal
Touch signal on fixed frequency detected signal line, in the state of detecting touch signal, the 2nd MCU controls the mould
Quasi- switching power to the first MCU, conversely, the 2nd MCU, which sends to instruct to touch screen, is again introduced into low-power consumption mould
Formula.
4. touch screen wake-up circuit according to claim 1, which is characterized in that the 2nd MCU passes through I2C bus to touching
It touches screen and sends instructions enter into low-power consumption mode.
5. touch screen wake-up circuit according to claim 2, which is characterized in that the voltage of the 2nd MCU output is 3V,
The voltage of the first MCU output is 3.7V.
6. a kind of touch screen awakening method, which is characterized in that use touch screen wake-up circuit, the touch screen wake-up circuit packet
It includes:
Analog switch: it is electrically connected with the signal wire of touch screen, power supply line；
Screen driving plate: being electrically connected with the analog switch, and the screen driving plate includes the first MCU；
2nd MCU: it is electrically connected with the analog switch；
Wherein, under touch screen ideal case, the 2nd MCU controls the analog switch, makes signal wire, the power supply of touch screen
Line is electrically connected with the 2nd MCU, is sent instruction to touch screen by the 2nd MCU and is powered to power supply line, makes to touch
Screen cyclic switching between low-power consumption mode and scanning touch signal；
After touch screen is waken up, the 2nd MCU controls the analog switch, drives the signal wire of touch screen and the screen
Movable plate electrical connection.
7. touch screen awakening method according to claim 6, which is characterized in that the voltage of the first MCU output is greater than
The voltage of the 2nd MCU output.
8. touch screen awakening method according to claim 7, which is characterized in that make touch screen in low-power consumption mode and scanning
Cyclic switching includes: to send instructions enter into low-power consumption mode from the 2nd MCU to touch screen, and pass through and set between touch signal
Touch signal on fixed frequency detected signal line, in the state of detecting touch signal, the 2nd MCU controls the mould
Quasi- switching power to the first MCU, conversely, the 2nd MCU, which sends to instruct to touch screen, is again introduced into low-power consumption mould
Formula.
9. touch screen awakening method according to claim 6, which is characterized in that the 2nd MCU passes through I2C bus to touching
It touches screen and sends instructions enter into low-power consumption mode.
10. a kind of electronic lock, which is characterized in that including touch screen wake-up circuit described in claim 1 to 5 any one.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811095594 | 2018-09-19 | ||
| CN2018110955943 | 2018-09-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109683735A true CN109683735A (en) | 2019-04-26 |
| CN109683735B CN109683735B (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811279692.2A Expired - Fee Related CN109683735B (en) | 2018-09-19 | 2018-10-30 | Touch screen wake-up circuit and method and electronic lock |
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| CN (1) | CN109683735B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111381661A (en) * | 2019-11-28 | 2020-07-07 | 联想(北京)有限公司 | Control method, control device, electronic equipment and storage medium |
| CN113342726A (en) * | 2021-06-22 | 2021-09-03 | 上海料聚微电子有限公司 | I2C bus system, chip with applied voltage working mode and method |
| CN113568521A (en) * | 2021-06-11 | 2021-10-29 | 北京集创北方科技股份有限公司 | Collection system, electron device and display module assembly |
| CN114035702A (en) * | 2021-11-04 | 2022-02-11 | 京东方科技集团股份有限公司 | Touch awakening method and device of display equipment, power supply circuit and display equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2194453A1 (en) * | 2008-11-28 | 2010-06-09 | HTC Corporation | Portable electronic device and method for waking up the same from sleep mode through touch screen |
| CN102880371A (en) * | 2011-07-15 | 2013-01-16 | 比亚迪股份有限公司 | Awakening system of resistive touch screen |
| CN106200853A (en) * | 2016-07-02 | 2016-12-07 | 上海与德通讯技术有限公司 | A kind of wake-up circuit and awakening method |
| CN206224644U (en) * | 2016-11-25 | 2017-06-06 | 山西瑞诺风电子科技有限公司 | The Internet of Things electronic lock circuit that a kind of identity-based card is unlocked |
-
2018
- 2018-10-30 CN CN201811279692.2A patent/CN109683735B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2194453A1 (en) * | 2008-11-28 | 2010-06-09 | HTC Corporation | Portable electronic device and method for waking up the same from sleep mode through touch screen |
| CN102880371A (en) * | 2011-07-15 | 2013-01-16 | 比亚迪股份有限公司 | Awakening system of resistive touch screen |
| CN106200853A (en) * | 2016-07-02 | 2016-12-07 | 上海与德通讯技术有限公司 | A kind of wake-up circuit and awakening method |
| CN206224644U (en) * | 2016-11-25 | 2017-06-06 | 山西瑞诺风电子科技有限公司 | The Internet of Things electronic lock circuit that a kind of identity-based card is unlocked |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111381661A (en) * | 2019-11-28 | 2020-07-07 | 联想(北京)有限公司 | Control method, control device, electronic equipment and storage medium |
| CN113568521A (en) * | 2021-06-11 | 2021-10-29 | 北京集创北方科技股份有限公司 | Collection system, electron device and display module assembly |
| CN113342726A (en) * | 2021-06-22 | 2021-09-03 | 上海料聚微电子有限公司 | I2C bus system, chip with applied voltage working mode and method |
| CN114035702A (en) * | 2021-11-04 | 2022-02-11 | 京东方科技集团股份有限公司 | Touch awakening method and device of display equipment, power supply circuit and display equipment |
| CN114035702B (en) * | 2021-11-04 | 2024-01-09 | 京东方科技集团股份有限公司 | Touch wakeup method and device of display equipment, power supply circuit and display equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109683735B (en) | 2022-09-09 |
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Granted publication date: 20220909 |