CN203596003U - Light touch screen control circuit, device and system - Google Patents
Light touch screen control circuit, device and system Download PDFInfo
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- CN203596003U CN203596003U CN201320681526.1U CN201320681526U CN203596003U CN 203596003 U CN203596003 U CN 203596003U CN 201320681526 U CN201320681526 U CN 201320681526U CN 203596003 U CN203596003 U CN 203596003U
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Abstract
The utility model discloses a light touch screen control circuit, device and system. The light touch screen control circuit comprises light sensing modules, a converting module, switch modules, a control chip and a detection module, wherein the light sensing modules are used for converting light energy into electric energy, the converting module is used for converting voltages, the switch modules are used for controlling the electric energy obtained through conversion of the light sensing modules to be output to the input end of the converting module, the control chip is used for controlling working states of the switch modules, and the detection module is used for detecting whether a light touch screen is touched or not. One ends of the switch modules are correspondingly connected with the light sensing modules in a one-to-one mode, the other ends of the switch modules are connected with the input end of the converting module, and when the switch modules are turned on, the electric energy obtained through conversion of the light sensing modules is output to the input end of the converting module. The input end of the detection module is connected with the light sensing modules, and the output end of the detection module is connected with the control chip. According to the light touch screen control circuit, device and system, energy waste is reduced.
Description
Technical field
The utility model relates to technical field of electronic products, particularly a kind of optical touch screen control circuit, Apparatus and system.
Background technology
Optical touch screen is applicable to remote control, accurate positioning, the feature that reaction velocity is fast, there is very large application and development space in the field such as advertisement, meeting, but when the illumination sending due to backlight is mapped on optical inductor part, be electric signal by photoinduction device by transform light energy, and in the time not utilizing signal to position, photoinduction device transforms the energy obtaining and is not released, thereby causes the waste of energy.
Utility model content
Fundamental purpose of the present utility model is to provide a kind of optical touch screen control circuit, is intended to reduce the waste of the energy.
To achieve these goals, the utility model provides a kind of optical touch screen control circuit, and described optical touch screen control circuit comprises for the photoinduction module that is electric energy by light energy conversion, for the modular converter of voltage transitions, exports the switch module of described modular converter input end to for controlling the electric energy of photoinduction module converts, for the control chip of gauge tap module duty and the detection module that whether is touched for detection of optical touch screen; One end of described switch module and described photoinduction module connect one to one, and the other end is connected with the input end of modular converter, and in the time of described switch module conducting, the electric energy that described photoinduction module converts is obtained exports the input end of modular converter to; Described detection module input end is connected with described photoinduction module, and output terminal is connected with described control chip.
Preferably, described switch module comprises the first resistance and electronic switch; One end of wherein said electronic switch is connected with the positive output end of described photoinduction module, and the other end is connected with the input end of described modular converter, and control end is connected with described control chip; One end of described the first resistance is connected with the input end of described modular converter, other end ground connection.
Preferably, described electronic switch is the first triode, and described the first triode is NPN triode, and its emitter is connected with the input end of described modular converter, the control end that base stage is electronic switch, and collector is connected with the positive output end of described photoinduction module.
Preferably, described detection module comprises the second triode, the 3rd triode, the second resistance and the 3rd resistance; Wherein said the second triode is NPN triode, and its collector is connected with the positive output end of described photoinduction module, and base stage is connected with described control chip, and emitter is by the second resistance eutral grounding; Described the 3rd triode is NPN triode, and its collector is connected with preset positive source, and base stage is connected with the emitter of described the second triode, and emitter is connected, also passes through the 3rd resistance eutral grounding with the test side of described control chip.
Preferably, optical touch screen control circuit also comprises the first electric capacity, and one end of described the first electric capacity is connected with the input end of described modular converter, other end ground connection.
Preferably, described modular converter is DC boosting chip.
The utility model also provides a kind of optical touch screen control device, described optical touch screen control device comprises optical touch screen and optical touch screen control circuit, and described optical touch screen control circuit comprises for the photoinduction module that is electric energy by light energy conversion, for the modular converter of voltage transitions, exports the switch module of described modular converter input end to for controlling the electric energy of photoinduction module converts, for the control chip of gauge tap module duty and the detection module that whether is touched for detection of optical touch screen; One end of described switch module and described photoinduction module connect one to one, and the other end is connected with the input end of modular converter, and in the time of described switch module conducting, the electric energy that described photoinduction module converts is obtained exports the input end of modular converter to; Described detection module input end is connected with described photoinduction module, and output terminal is connected with described control chip.
Preferably, described optical touch screen comprises backlight, display panels and some photoinduction modules, and wherein said photoinduction module is between described backlight and described display panels.
The utility model also provides a kind of optical touch screen control system, described optical touch screen control system comprises optical touch screen control device, described optical touch screen control device comprises optical touch screen and optical touch screen control circuit, described optical touch screen control circuit comprises for the photoinduction module that is electric energy by light energy conversion, for the modular converter of voltage transitions, export the switch module of described modular converter input end to for controlling the electric energy of photoinduction module converts, for the control chip of gauge tap module duty and the detection module whether being touched for detection of optical touch screen, one end of described switch module and described photoinduction module connect one to one, and the other end is connected with the input end of modular converter, and in the time of described switch module conducting, the electric energy that described photoinduction module converts is obtained exports the input end of modular converter to, described detection module input end is connected with described photoinduction module, and output terminal is connected with described control chip.
Preferably, described optical touch screen comprises backlight, display panels and some photoinduction modules, and wherein said photoinduction module is between described backlight and described display panels.
The utility model exports modular converter to by the electric energy that switch module control photoinduction module is set, electric energy photoinduction module being produced by modular converter converts the voltage that is suitable for loaded work piece to, thereby realize the utilization of the electric energy that photoinduction module is produced, therefore reduced the waste of the energy.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the utility model optical touch screen control circuit preferred embodiment.
Realization, functional characteristics and the advantage of the utility model object, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of optical touch screen control circuit.
With reference to Fig. 1, Fig. 1 is the electrical block diagram of the utility model optical touch screen control circuit preferred embodiment.The optical touch screen control circuit that the present embodiment provides comprise for be electric energy by light energy conversion with photoinduction module 10, for the modular converter 30 of voltage transitions, export the switch module 20 of described modular converter 30 input ends to for controlling electric energy that photoinduction module 10 changes, for the control chip 40 of gauge tap module 20 duties and the detection module 50 that whether is touched for detection of optical touch screen; One end of described switch module 20 and described photoinduction module 10 connect one to one, the other end is connected with the input end of modular converter 30, and in the time of described switch module 20 conducting, the electric energy that described photoinduction module 10 is converted to exports the input end of modular converter 30 to; Described detection module 50 input ends are connected with described photoinduction module 10, and output terminal is connected with described control chip 40.
In the present embodiment, above-mentioned photoinduction module 10 is for the conversion equipment that is electric energy by transform light energy, it comprises the positive output of photoinduction module 10 and the negative output of photoinduction module 10, the positive output of wherein photoinduction module 10 is connected with described switch module 20 and detection module 50 respectively, negative output terminal ground connection.Particularly, above-mentioned photoinduction module 10 is multiple, and above-mentioned switch module 20 connects one to one with photoinduction module 10, and above-mentioned detection module 50 also connects one to one with photoinduction module 10.
Above-mentioned optical touch screen control circuit can be controlled optical touch screen and enter respectively two kinds of mode of operations, and one is touch mode, and another kind is non-touch mode.For example can be by extraneous telepilot output remote signal to optical touch screen control circuit, thereby control the mode of operation of optical touch screen, in the time that optical touch screen enters touch mode, user can enter the operating instructions by the mode of Emission Lasers bundle, in the time entering non-touch mode, cannot enter the operating instructions by optical touch screen.
In the time entering touch mode, output control signals to respectively switch module 20 and detection module 50 modules by control chip 40, switch module 20 is according to disconnecting between the positive output end of control signal control photoinduction module 10 and the input end of modular converter 30, detection module 50 starts to detect the voltage status of photoinduction module 10 positive input terminals according to control signal, in the time that user passes through laser beam irradiation optical touch screen, the voltage of corresponding photoinduction module 10 positive input terminals will raise, and detection module 10 will be exported a level signal to control chip 40.Control chip 40 is analyzed the position of laser beam irradiation formation cursor according to the level signal receiving.Should be noted that, when under touch mode, in preset time period, detection module 50 does not detect laser beam continuously, also can output control signals to switch module 20 by control chip 40, export modular converter 30 to the electric energy of controlling photoinduction module 10, electric energy photoinduction module 10 being produced by modular converter 30 is load supplying after changing.
In the time entering non-touch mode, output control signals to respectively switch module 20 and detection module 50 modules by control chip 40, switch module 20 is according to being normally connected between the positive output end of control signal control photoinduction module 10 and the input end of modular converter 30, export the input end of described modular converter 30 to the electric energy that photoinduction module 10 positive output ends are formed, by modular converter 30, this electric energy being converted to the voltage that is suitable for loaded work piece, is load supplying.Detection module 50 stops detecting the voltage status of photoinduction module 10 positive input terminals according to control signal.
The utility model is controlled photoinduction module 10 electric energy by switch module 20 is set exports modular converter 30 to, electric energy photoinduction module 10 being produced by modular converter 30 converts the voltage that is suitable for loaded work piece to, thereby realize the utilization of the electric energy that photoinduction module 10 is produced, therefore reduced the waste of the energy.
Further, based on above-described embodiment, in the present embodiment, above-mentioned switch module 20 comprises the first resistance R 1 and electronic switch Q1; One end of wherein said electronic switch Q1 is connected with the positive output end of described photoinduction module 10, and the other end is connected with the input end of described modular converter 30, and control end is connected with described control chip 40; One end of described the first resistance R 1 is connected with the input end of described modular converter 30, other end ground connection.
Particularly, the electrical equipment of above-mentioned electronic switch Q1 can arrange according to actual needs, in the present embodiment, preferably above-mentioned electronic switch Q1 is the first triode, described the first triode is NPN triode, its emitter is connected with the input end of described modular converter 30, and base stage is the control end of electronic switch Q1, and collector is connected with the positive output end of described photoinduction module 10.
In the present embodiment, in the time that control chip 40 is exported a low level base stage that controls signal to the first triode, the first triode will be in cut-off state; In the time that control chip 40 is exported the base stage that controls signal to the first triode of a high level, the first triode will be in conducting state, the electric energy that now each photoinduction module 10 obtains conversion exports the input end of modular converter 30 to, after the voltage of input end being adjusted by modular converter 30, exporting corresponding load to from output terminal, is load supplying.
Further, based on above-described embodiment, in the present embodiment, above-mentioned detection module 50 comprises the second triode Q2, the 3rd triode Q3, the second resistance R 2 and the 3rd resistance R 3; Wherein said the second triode Q2 is NPN triode, and its collector is connected with the positive output end of described photoinduction module 10, and base stage is connected with described control chip 40, and emitter is by the second resistance R 2 ground connection; Described the 3rd triode Q3 is NPN triode, its collector is connected with preset power supply (power supply of+5V) is anodal, base stage is connected with the emitter of described the second triode Q2, and emitter is connected, also passes through the 3rd resistance R 3 ground connection with the test side of described control chip 40.
In the present embodiment, in the time that above-mentioned control chip 40 is exported a low level base stage that controls signal to the second triode Q2, the second triode Q2 will be in cut-off state; One end that control chip 40 is connected with the emitter of the 3rd triode Q3 receives low level signal all the time.In the time that above-mentioned control chip 40 is exported the base stage that controls signal to the second triode Q2 of a high level, the second triode Q2 will be in conducting state, if when now laser beam is not incident in photoinduction module 10, the voltage at the second resistance R 2 two ends is less than the forward voltage of the 3rd triode Q3, if laser beam incident is in photoinduction module 10 time, voltage in corresponding photoinduction module 10 will raise, thereby the voltage that makes the second corresponding resistance R 2 two ends is greater than the voltage of the 3rd triode Q3, cause the 3rd triode Q3 conducting, thereby make control chip 40 receive high level signal with one end that the emitter of the 3rd triode Q3 is connected.Control chip 40 is analyzed the position of laser beam irradiation according to the pin that receives high level signal.
Further, based on above-described embodiment, in the present embodiment, above-mentioned optical touch screen control circuit also comprises the first capacitor C 1, and one end of described the first capacitor C 1 is connected with the input end of described modular converter 30, other end ground connection.
In the present embodiment, above-mentioned the first capacitor C 1, for filtering, can improve the stability of the voltage that inputs to modular converter 30 input ends.
The circuit structure that it should be noted that above-mentioned modular converter 30 can arrange according to actual needs, and in the present embodiment, in order to reduce the difficulty of circuit design, above-mentioned modular converter 30 can be DC boosting chip, for example, can adopt SP6641.
The utility model also provides a kind of optical touch screen control device, and this optical touch screen control device comprises optical touch screen and optical touch screen control circuit, and the structure of this optical touch screen control circuit can, with reference to above-described embodiment, not repeat them here.Naturally, because the optical touch screen control device of the present embodiment has adopted the technical scheme of above-mentioned optical touch screen control circuit, therefore this optical touch screen control device has all beneficial effects of above-mentioned optical touch screen control circuit.
Particularly, above-mentioned optical touch screen comprises backlight, display panels and some photoinduction modules, and wherein said photoinduction module is between described backlight and described display panels.In the present embodiment, because display panels has certain transmissivity, therefore photoinduction module is arranged between backlight and display panels, thereby the light that can make backlight is directed in photoinduction module, effectively prevent that the optical touch screen control device that therefore the present embodiment provides can further improve the utilization factor of luminous energy because light arrives the transmission loss bringing in photoinduction module after display panels transmission.
The utility model also provides a kind of optical touch screen control system, and this optical touch screen control system comprises optical touch screen control device, and the structure of this optical touch screen control device can, with reference to above-described embodiment, not repeat them here.Naturally, because the optical touch screen control system of the present embodiment has adopted the technical scheme of above-mentioned optical touch screen control device, therefore this optical touch screen control system has all beneficial effects of above-mentioned optical touch screen control device.
These are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. an optical touch screen control circuit, it is characterized in that, comprise for the photoinduction module that is electric energy by light energy conversion, for the modular converter of voltage transitions, export the switch module of described modular converter input end to for controlling the electric energy of photoinduction module converts, for the control chip of gauge tap module duty and the detection module that whether is touched for detection of optical touch screen; One end of described switch module and described photoinduction module connect one to one, and the other end is connected with the input end of modular converter, and in the time of described switch module conducting, the electric energy that described photoinduction module converts is obtained exports the input end of modular converter to; Described detection module input end is connected with described photoinduction module, and output terminal is connected with described control chip.
2. optical touch screen control circuit as claimed in claim 1, is characterized in that, described switch module comprises the first resistance and electronic switch; One end of wherein said electronic switch is connected with the positive output end of described photoinduction module, and the other end is connected with the input end of described modular converter, and control end is connected with described control chip; One end of described the first resistance is connected with the input end of described modular converter, other end ground connection.
3. optical touch screen control circuit as claimed in claim 2, it is characterized in that, described electronic switch is the first triode, described the first triode is NPN triode, its emitter is connected with the input end of described modular converter, base stage is the control end of electronic switch, and collector is connected with the positive output end of described photoinduction module.
4. optical touch screen control circuit as claimed in claim 1, is characterized in that, described detection module comprises the second triode, the 3rd triode, the second resistance and the 3rd resistance; Wherein said the second triode is NPN triode, and its collector is connected with the positive output end of described photoinduction module, and base stage is connected with described control chip, and emitter is by the second resistance eutral grounding; Described the 3rd triode is NPN triode, and its collector is connected with preset positive source, and base stage is connected with the emitter of described the second triode, and emitter is connected, also passes through the 3rd resistance eutral grounding with the test side of described control chip.
5. optical touch screen control circuit as claimed in claim 1, is characterized in that, optical touch screen control circuit also comprises the first electric capacity, and one end of described the first electric capacity is connected with the input end of described modular converter, other end ground connection.
6. optical touch screen control circuit as claimed in claim 1, is characterized in that, described modular converter is DC boosting chip.
7. an optical touch screen control device, is characterized in that, comprises optical touch screen and the optical touch screen control circuit as described in any one in claim 1 to 6.
8. optical touch screen control device as claimed in claim 7, is characterized in that, described optical touch screen comprises backlight, display panels and some photoinduction modules, and wherein said photoinduction module is between described backlight and described display panels.
9. an optical touch screen control system, is characterized in that, comprises optical touch screen control device as claimed in claim 7.
10. optical touch screen control system as claimed in claim 9, is characterized in that, described optical touch screen comprises backlight, display panels and some photoinduction modules, and wherein said photoinduction module is between described backlight and described display panels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681526.1U CN203596003U (en) | 2013-10-30 | 2013-10-30 | Light touch screen control circuit, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681526.1U CN203596003U (en) | 2013-10-30 | 2013-10-30 | Light touch screen control circuit, device and system |
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| Publication Number | Publication Date |
|---|---|
| CN203596003U true CN203596003U (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320681526.1U Expired - Fee Related CN203596003U (en) | 2013-10-30 | 2013-10-30 | Light touch screen control circuit, device and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110163172A (en) * | 2019-05-27 | 2019-08-23 | 京东方科技集团股份有限公司 | Skin texture detection circuit, charging circuit and driving method, touch-control display panel |
-
2013
- 2013-10-30 CN CN201320681526.1U patent/CN203596003U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110163172A (en) * | 2019-05-27 | 2019-08-23 | 京东方科技集团股份有限公司 | Skin texture detection circuit, charging circuit and driving method, touch-control display panel |
| WO2020238839A1 (en) * | 2019-05-27 | 2020-12-03 | 京东方科技集团股份有限公司 | Texture detection circuit, charging circuit, driving method and touch control display panel |
| CN110163172B (en) * | 2019-05-27 | 2021-05-07 | 京东方科技集团股份有限公司 | Texture detection circuit, charging circuit and driving method, and touch display panel |
| US11393245B2 (en) | 2019-05-27 | 2022-07-19 | Boe Technology Group Co., Ltd. | Texture detection circuit, charging circuit, driving method and touch display panel |
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