CN203746010U - Power source control system of touch screen - Google Patents
Power source control system of touch screen Download PDFInfo
- Publication number
- CN203746010U CN203746010U CN201420056953.5U CN201420056953U CN203746010U CN 203746010 U CN203746010 U CN 203746010U CN 201420056953 U CN201420056953 U CN 201420056953U CN 203746010 U CN203746010 U CN 203746010U
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- touch
- power
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- utmost point
- power switch
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Abstract
The utility model discloses a power source control system of a touch screen. The power source control system of the touch screen comprises a system power source, a touch power switch and a micro-processing controller. The output end of the system power source is connected with the touch power switch. The micro-processing controller controls the touch power switch to be switched on or switched off. The output end of the touch power switch is connected with the power input end of a touch screen controller through a power connection control circuit. The power connection control circuit comprises a PMOS transistor and an audion. The pole S of the PMOS transistor is connected with the output end of the touch power switch. The pole D of the PMOS transistor is connected with the power input end of the touch screen controller. The base electrode of the audion is connected with the signal transmission end of the touch screen controller through a first resistor, the collector electrode of the audion is connected with the pole G of the PMOS transistor, the emitting electrode of the audion is grounded, and the base electrode of the audion is grounded through a second resistor. The pole S and the pole G of the PMOS transistor are connected through a third resistor. The power source control system of the touch screen effectively reduces energy consumption of touch screens.
Description
Technical field
The utility model relates to touch-screen, especially a kind of power control system of touch-screen.
Background technology
Touch-screen (touch screen) is called again " touch screen ", " contact panel ", it is a kind of induction type liquid crystal indicator that receives the input signals such as contact, when having contacted the graphic button on screen, haptic feedback system on screen can drive various hookup mechanisms according to the formula of programming in advance, can be in order to replace mechanical push button panel, and produce lively visual and sound effects by liquid crystal display picture, touch-screen is a kind of novel computer input apparatus, in the inquiry of public information, Industry Control, military commanding, electronic game, choosing song or selecting dish, be used widely in the fields such as multimedia teaching.
The power control system of existing touch-screen generally will comprise system power supply, microprocessor controller, touching power switch, when the operator scheme of touch-screen is open mode or sleep pattern, microprocessor controller sends signal and opens touching power switch, system power supply provides power supply to the touching fluorescent screen controller of touch-screen, and touch-screen could normally be used; When the operator scheme of touch-screen is " shut " mode", microprocessor controller sends signal and disconnects touching power switch, and system power supply provides power supply to the touching fluorescent screen controller of touch-screen, and now touch-screen can not be used.And the normal prerequisite of using of touch-screen is to touch fluorescent screen controller need to carry out normal liaison by signal transmssion line and main control PC.And when touching fluorescent screen controller and main control PC are not set up normal liaison, when the operator scheme of touch-screen is set to open mode or sleep pattern, system power supply provides power supply can to equally the touching fluorescent screen controller of touch-screen, now unnecessary energy dissipation will be caused, and the serviceable life of related device can be shortened.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of power control system of touch-screen, and it effectively reduces the energy resource consumption of touch-screen.
For achieving the above object, the technical solution of the utility model is: a kind of power control system of touch-screen, comprise system power supply, touching power switch, microprocessor controller, system power supply output terminal connects touching power switch, microprocessor controller is controlled being switched on or switched off of touching power switch, touching power switch output terminal connects touching fluorescent screen controller power source input end by a power connection control circuit, described power connection control circuit comprises a PMOS pipe, a triode, the S utmost point of PMOS pipe connects touching power switch output terminal, the D utmost point of PMOS pipe connects touching fluorescent screen controller power source input end, the base stage of triode connects touching fluorescent screen controller signals transmission ends by the first resistance, the collector of triode connects the G utmost point of PMOS pipe, the grounded emitter of triode, the base stage of triode is also by the second resistance eutral grounding.
Further improve, between the S utmost point of described PMOS pipe and the G utmost point, also by the 3rd resistance, be connected.
Preferred described system power supply output voltage is 12V.
Further improve, between the D utmost point of described PMOS pipe and touching fluorescent screen controller power source input end, be also provided with electric pressure converter, electric pressure converter becomes 5V voltage to be defeated by touching fluorescent screen controller 12V voltage transitions.
The utility model is owing at touching power switch output terminal and touching fluorescent screen controller power source input end, a power connection control circuit being set, described power connection control circuit comprises a PMOS pipe, a triode, the S utmost point of PMOS pipe connects touching power switch output terminal, the D utmost point of PMOS pipe connects touching fluorescent screen controller power source input end, the base stage of triode connects touching fluorescent screen controller signals transmission ends by the first resistance, the collector of triode connects the G utmost point of PMOS pipe, the grounded emitter of triode, the base stage of triode is also by the second resistance eutral grounding.When microprocessor controller is controlled, touching power switch is connected and signal transmission ends and the main control PC of touching fluorescent screen controller are set up normal liaison like this, the signal transmission ends of touching fluorescent screen controller will have a voltage, this voltage will be given the base stage input current of triode, the collector of triode will be exported larger electric current to the G utmost point of PMOS pipe, cause the S utmost point and the conducting of the D utmost point of PMOS pipe, system power supply just can be given the controller power supply of touching fluorescent screen; And the signal transmission ends of touching fluorescent screen controller is not while setting up normal liaison with main control PC, the signal transmission ends of touching fluorescent screen controller does not have voltage, the S utmost point of PMOS pipe and the not conducting of the D utmost point, even if now microprocessor controller sends the connection of signal controlling touching power switch, system power supply can not be given the controller power supply of touching fluorescent screen, the power consumption that reduces touching fluorescent screen controller, therefore can effectively reduce the energy resource consumption of touch-screen.Simultaneously, because reducing touching fluorescent screen controller conduction time, also can extend the serviceable life of related device.
Accompanying drawing explanation
Fig. 1 is the utility model principle schematic.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment, the utility model is described in further detail.
Shown in Fig. 1, a kind of power control system of touch-screen, comprise system power supply 1, touching power switch 2, microprocessor controller 3, system power supply 1 output terminal connects touching power switch 2, the voltage of system power supply 1 output terminal output is 12V, microprocessor controller 3 is controlled being switched on or switched off of touching power switch 2, touching power switch 2 output terminals connect touching fluorescent screen controller 5 by a power connection control circuit 4, described power connection control circuit 4 comprises a PMOS pipe, a triode Q1, the S utmost point of PMOS pipe connects touching power switch 2 output terminals, the D utmost point of PMOS pipe connects touching fluorescent screen controller 5 power inputs by electric pressure converter 6, electric pressure converter 6 becomes 5V voltage to be defeated by touching fluorescent screen controller 5 12V voltage transitions,
The base stage of triode Q1 connects touching fluorescent screen controller 5 signal transmission ends 51 by the first resistance R 1, the collector of triode Q1 connects the G utmost point of PMOS pipe, the grounded emitter of triode Q1, the base stage of triode Q1 also, by the second resistance R 2 ground connection, is also connected by the 3rd resistance R 3 between the S utmost point of PMOS pipe and the G utmost point.
Principle of work of the present utility model is: when the operator scheme of touch-screen is open mode or sleep pattern, microprocessor controller 3 sends signal and makes to touch power switch 2 connections, if now the signal transmission ends 51 of touching fluorescent screen controller 5 is set up normal liaison with main control PC, the signal transmission ends 51 of touching fluorescent screen controller 5 will have a voltage, this voltage will be given the base stage input current of triode Q1, the collector of triode Q1 will be exported larger electric current to the G utmost point of PMOS pipe, cause the S utmost point and the conducting of the D utmost point of PMOS pipe, the 12V power supply of system power supply 1 is just transferred to electric pressure converter 6, electric pressure converter 6 becomes 5V voltage to be defeated by touching fluorescent screen controller 5 12V voltage transitions, if the signal transmission ends 51 of touching fluorescent screen controller 5 is set up normal liaison with main control PC position, the signal transmission ends 51 of touching fluorescent screen controller 5 does not have voltage, the collector of Q1 can output current to the G utmost point of PMOS pipe, PMOS manages not conducting, the 12V power supply of system power supply 1 is cut off, just be conducive to reduce the energy resource consumption of touch-screen, particularly at main control PC when sleep state does not carry out signal contact with the signal transmission ends 51 of touching fluorescent screen controller 5, energy-saving effect is more obvious.
Below be only preferred embodiment of the utility model, the change that those skilled in the art does to be equal to by claim all falls into the protection domain of this case.
Claims (4)
1. the power control system of a touch-screen, comprise system power supply, touching power switch, microprocessor controller, system power supply output terminal connects touching power switch, microprocessor controller is controlled being switched on or switched off of touching power switch, it is characterized in that: touching power switch output terminal connects touching fluorescent screen controller power source input end by a power connection control circuit, described power connection control circuit comprises a PMOS pipe, a triode, the S utmost point of PMOS pipe connects touching power switch output terminal, the D utmost point of PMOS pipe connects touching fluorescent screen controller power source input end, the base stage of triode connects touching fluorescent screen controller signals transmission ends by the first resistance, the collector of triode connects the G utmost point of PMOS pipe, the grounded emitter of triode, the base stage of triode is also by the second resistance eutral grounding.
2. the power control system of a kind of touch-screen according to claim 1, is characterized in that: between the S utmost point of described PMOS pipe and the G utmost point, also by the 3rd resistance, be connected.
3. the power control system of a kind of touch-screen according to claim 1, is characterized in that: described system power supply output voltage is 12V.
4. the power control system of a kind of touch-screen according to claim 3, it is characterized in that: between the D utmost point of described PMOS pipe and touching fluorescent screen controller power source input end, be also provided with electric pressure converter, electric pressure converter becomes 5V voltage to be defeated by touching fluorescent screen controller 12V voltage transitions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056953.5U CN203746010U (en) | 2014-01-29 | 2014-01-29 | Power source control system of touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056953.5U CN203746010U (en) | 2014-01-29 | 2014-01-29 | Power source control system of touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203746010U true CN203746010U (en) | 2014-07-30 |
Family
ID=51345785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420056953.5U Expired - Fee Related CN203746010U (en) | 2014-01-29 | 2014-01-29 | Power source control system of touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203746010U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154072A (en) * | 2015-04-07 | 2016-11-23 | 上海炬力集成电路设计有限公司 | A kind of Testing System for Electronic Equipment and method |
-
2014
- 2014-01-29 CN CN201420056953.5U patent/CN203746010U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154072A (en) * | 2015-04-07 | 2016-11-23 | 上海炬力集成电路设计有限公司 | A kind of Testing System for Electronic Equipment and method |
| CN106154072B (en) * | 2015-04-07 | 2019-02-15 | 上海际浩智能科技有限公司 | A kind of electronic equipment test macro and method |
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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: 20140730 Termination date: 20160129 |
|
| EXPY | Termination of patent right or utility model |