CN104951146B - The anti-aging system of infrared touch panel - Google Patents
The anti-aging system of infrared touch panel Download PDFInfo
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- CN104951146B CN104951146B CN201410116254.XA CN201410116254A CN104951146B CN 104951146 B CN104951146 B CN 104951146B CN 201410116254 A CN201410116254 A CN 201410116254A CN 104951146 B CN104951146 B CN 104951146B
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- infrared
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- ageing parameter
- emitting diode
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Abstract
The present invention relates to infrared touch panel fields.The digital quantity skip signal of the signal acquisition circuit acquisition infrared receiving diode of the anti-aging system of infrared touch panel, and embody the analog signal that infrared receiving diode receives light intensity, and the analog signal for embodying infrared receiving diode reception light intensity is converted into digital quantity, referred to as ageing parameter；Ageing parameter passes through control system connectivity port together with digital quantity skip signal and is transferred to control system；An at least ageing parameter threshold value is equipped in control system, after at least 1 hour ageing parameter is averaged, if exceeding ageing parameter threshold value, control system if, issues instruction, the output electric current for controlling driving signal output mechanism increases, and then improves lumination of light emitting diode brightness.By above-mentioned design, can solve infrared light-emitting diode perhaps infrared receiving diode because of the problem of aging brightness reduction or susceptibility reduce.
Description
Technical field
The present invention relates to touch screen field more particularly to infrared touch panel fields.
Background technique
A advantages that branch of the infrared touch panel as touch screen, easy for installation with its, non-maintaining, high reliability and by
Gradually it is widely used in every field.Infrared touch panel is usually to utilize X, and the infrared ray matrix to gather in Y-direction detects simultaneously
Position the touch of user.Four side of the screen arrangement infrared transmitting tube and infrared receiving tube of infrared touch panel, correspond at vertical and horizontal
The infrared matrix intersected.When touching screen, the touch point for touching part can be blocked by the vertical and horizontal two infrared of the position user
Line, thus may determine that the position of touch point on the screen.
Existing infrared touch panel is during prolonged use, in the infrared transmitting tube and infrared receiver to the relationship of penetrating
Pipe is because of aging, it is possible that the problem of brightness reduction or susceptibility reduce.
Summary of the invention
The purpose of the present invention is to provide a kind of anti-aging systems of infrared touch panel, to solve the above technical problems.
Technical problem solved by the invention can be realized using following technical scheme:
The anti-aging system of infrared touch panel, including an infrared correlation touch screen system, the infrared correlation touch screen system
Including an infrared emission array and an infrared receiver array and a touch signal processing system, it is characterised in that:
At least one on drive circuit board is arranged in including at least one drive circuit plate and one for the infrared emission array
Infrared light-emitting diode is arranged,
The drive circuit board is equipped with power connector end and a driving signal output mechanism, the driving signal are defeated
Mechanism connects infrared light-emitting diode out, and driving infrared light-emitting diode shines；
The driving signal output mechanism is the driving signal output mechanism of an output controlled current flow；
The driving signal output mechanism is equipped with an output electric current and adjusts control terminal, and the output electric current adjustment control terminal connects
A control system is connect, and then controls the output electric current of the driving signal output mechanism by control system；
The infrared receiver array includes that an at least signal receiving circuit plate and one are arranged on signal receiving circuit plate
At least row's infrared receiving diode；
The signal receiving circuit plate is equipped with signal processing circuit, and the signal processing circuit is connected equipped with control system
Port, the signal processing circuit connect a signal acquisition circuit, and the signal acquisition circuit connects infrared receiving diode；
The digital quantity skip signal of the signal acquisition circuit acquisition infrared receiving diode, and embody infrared receiver two
Pole pipe receives the analog signal of light intensity, and the analog signal for embodying infrared receiving diode reception light intensity is converted to
Digital quantity, referred to as ageing parameter；The ageing parameter passes through control system connectivity port together with digital quantity skip signal to be transmitted
To control system；
An at least ageing parameter threshold value is equipped in the control system, after at least 1 hour ageing parameter is averaged,
If exceeding ageing parameter threshold value, control system if, issues instruction, and the output for controlling the driving signal output mechanism is electric
Stream increases, and then improves lumination of light emitting diode brightness.
By above-mentioned design, infrared light-emitting diode or infrared receiving diode be can solve because of aging, brightness is dropped
The problem of low or susceptibility reduces.
The initial output electric current of the driving signal output mechanism, less than the 90% of infrared light-emitting diode maximum current.
To extend the service life, and guarantee the remaining for thering is brightness to deduct a percentage.
Preferably, the initial output electric current of the driving signal output mechanism is less than infrared light-emitting diode maximum current
70%.
It can be set at least two ageing parameter threshold values, between at least two adjacent ageing parameter threshold values, difference 10%
~20%.
Preferably, three ageing parameter threshold values are set, between two adjacent ageing parameter threshold values, difference 10%~
20%.
An at least ageing parameter threshold value is equipped in the control system, after at least 1 week ageing parameter is averaged, such as
Fruit exceeds ageing parameter threshold value, and the control system then issues instruction, controls the output electric current of the driving signal output mechanism
Increase, and then improves lumination of light emitting diode brightness.
The driving signal output mechanism output electric current incrementss be infrared light-emitting diode maximum current 5%~
10%.
Detailed description of the invention
The present invention is further illustrated below in conjunction with the drawings and specific embodiments:
Fig. 1 is circuit block diagram of the invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Referring to Fig.1, the anti-aging system of infrared touch panel, including an infrared correlation touch screen system, the infrared emission touching
Touching screen system includes an infrared emission array and an infrared receiver array and a touch signal processing system.Infrared emission battle array
Column and infrared receiver array are set to the avris of touch area, and a line of touch area is equipped with one group of infrared emission array,
The another a line of touch area is equipped with one group of infrared receiver array, and infrared emission array is oppositely arranged with infrared receiver array,
Infrared receiving tube in infrared receiver array receives the infrared light of the infrared transmitting tube transmitting in infrared emission array.
Infrared emission array is red including at least row that at least one drive circuit plate and one are arranged on drive circuit board
UV light-emitting diode, drive circuit board are equipped with power connector end and a driving signal output mechanism, and driving signal exports machine
Structure connects infrared light-emitting diode, and driving infrared light-emitting diode shines；Driving signal output mechanism is an output controlled current flow
Driving signal output mechanism；Driving signal output mechanism is equipped with an output electric current and adjusts control terminal, output electric current adjustment control
End connection control system, and then pass through the output electric current of control system control driving signal output mechanism.Infrared light-emitting diode
It can be for using wide-angle infrared transmitting tube.The signal of each wide-angle infrared transmitting tube transmitting in infrared emission array is connect by infrared
Receive at least one infrared receiving tube identification in array, an infrared receiver in wide-angle infrared transmitting tube and three infrared receiving tubes
Line between pipe vertically divides the line between other two infrared receiving tube equally.
Infrared receiver array includes that an at least signal receiving circuit plate and one are arranged on signal receiving circuit plate extremely
Few row's infrared receiving diode；Signal receiving circuit plate is equipped with signal processing circuit, and signal processing circuit is equipped with control system
System connectivity port, signal processing circuit connect a signal acquisition circuit, and signal acquisition circuit connects infrared receiving diode；Signal
Acquisition Circuit acquires the digital quantity skip signal of infrared receiving diode, and embodies infrared receiving diode and receive light intensity
Analog signal, and by embody infrared receiving diode receive light intensity analog signal be converted to digital quantity, referred to as aging
Parameter；Ageing parameter passes through control system connectivity port together with digital quantity skip signal and is transferred to control system.Control system
In be equipped with an at least ageing parameter threshold value, after at least 1 hour ageing parameter is averaged, if exceed ageing parameter threshold
Value, control system then issue instruction, and the output electric current of control driving signal output mechanism increases, and then improves light emitting diode hair
Brightness.By above-mentioned design, infrared light-emitting diode or infrared receiving diode be can solve because of aging, brightness reduces
Or the problem of susceptibility reduction.
The initial output electric current of driving signal output mechanism, less than the 90% of infrared light-emitting diode maximum current.To prolong
Long-life, and guarantee the remaining for thering is brightness to deduct a percentage.
Preferably, the initial output electric current of driving signal output mechanism, less than infrared light-emitting diode maximum current
70%.
It can be set at least two ageing parameter threshold values, between at least two adjacent ageing parameter threshold values, difference 10%
~20%.Preferably, three ageing parameter threshold values are set, between two adjacent ageing parameter threshold values, difference 10%~20%.
An at least ageing parameter threshold value is equipped in control system, after at least 1 week ageing parameter is averaged, if super
Ageing parameter threshold value out, control system then issue instruction, and the output electric current of control driving signal output mechanism increases, and then improves
Lumination of light emitting diode brightness.
The output electric current incrementss of driving signal output mechanism are the 5%~10% of infrared light-emitting diode maximum current.
Control system can be host computer or signal processing system.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. the anti-aging system of infrared touch panel, including an infrared correlation touch screen system, the infrared correlation touch screen system packet
Include an infrared emission array and an infrared receiver array and a touch signal processing system, it is characterised in that:
The infrared emission array is red including at least row that at least one drive circuit plate and one are arranged on drive circuit board
UV light-emitting diode,
The drive circuit board is equipped with power connector end and a driving signal output mechanism, and the driving signal exports machine
Structure connects infrared light-emitting diode, and driving infrared light-emitting diode shines；
The driving signal output mechanism is the driving signal output mechanism of an output controlled current flow；
The driving signal output mechanism is equipped with an output electric current and adjusts control terminal, the output electric current adjustment control terminal connection control
System processed, and then control by control system the output electric current of the driving signal output mechanism；
The infrared receiver array includes that an at least signal receiving circuit plate and one are arranged on signal receiving circuit plate extremely
Few row's infrared receiving diode；
The signal receiving circuit plate is equipped with signal processing circuit, and the signal processing circuit is equipped with control system connecting pin
Mouthful, the signal processing circuit connects a signal acquisition circuit, and the signal acquisition circuit connects infrared receiving diode；
The digital quantity skip signal of the signal acquisition circuit acquisition infrared receiving diode, and embody infrared receiving diode
The analog signal of light intensity is received, and the analog signal for embodying infrared receiving diode reception light intensity is converted into number
Amount, referred to as ageing parameter；The ageing parameter passes through control system connectivity port together with digital quantity skip signal and is transferred to control
System processed；
An at least ageing parameter threshold value is equipped in the control system, after at least 1 hour ageing parameter is averaged, if
Beyond ageing parameter threshold value, the control system then issues instruction, and the output electric current for controlling the driving signal output mechanism increases
Add, and then improves lumination of light emitting diode brightness；
The initial output electric current of the driving signal output mechanism, less than the 90% of infrared light-emitting diode maximum current.
2. the anti-aging system of infrared touch panel according to claim 1, it is characterised in that: the driving signal output mechanism
Initial output electric current, less than the 70% of infrared light-emitting diode maximum current.
3. the anti-aging system of infrared touch panel according to claim 1 or 2, it is characterised in that: set in the control system
There are an at least two ageing parameter threshold values, between at least two adjacent ageing parameter threshold values, difference 10%~20%.
4. the anti-aging system of infrared touch panel according to claim 3, it is characterised in that: be equipped with three in the control system
A ageing parameter threshold value, between two adjacent ageing parameter threshold values, difference 10%~20%.
5. the anti-aging system of infrared touch panel according to claim 1 or 2, it is characterised in that: set in the control system
There is an at least ageing parameter threshold value, it is described if exceeding ageing parameter threshold value after at least 1 week ageing parameter is averaged
Control system then issues instruction, and the output electric current for controlling the driving signal output mechanism increases, and then improves light emitting diode
Light emission luminance.
6. the anti-aging system of infrared touch panel according to claim 1 or 2, it is characterised in that: the driving signal output
The output electric current incrementss of mechanism are the 5%~10% of infrared light-emitting diode maximum current.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410116254.XA CN104951146B (en) | 2014-03-26 | 2014-03-26 | The anti-aging system of infrared touch panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410116254.XA CN104951146B (en) | 2014-03-26 | 2014-03-26 | The anti-aging system of infrared touch panel |
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| CN104951146A CN104951146A (en) | 2015-09-30 |
| CN104951146B true CN104951146B (en) | 2019-05-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105912294B (en) * | 2016-04-25 | 2017-10-17 | 广东欧珀移动通信有限公司 | A kind of adjusting method, device and intelligent terminal for intelligent terminal display screen |
| CN107911554B (en) * | 2017-11-22 | 2020-05-12 | Oppo广东移动通信有限公司 | Electronic device and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1335548A (en) * | 2000-07-24 | 2002-02-13 | 北京汇冠科技有限公司 | Infrared touch screen performance improving structure and method |
| CN2824143Y (en) * | 2005-09-23 | 2006-10-04 | 成都吉锐触摸电脑有限公司 | Infrared touch screen with optical lens |
| CN101226447A (en) * | 2008-01-29 | 2008-07-23 | 广东威创视讯科技股份有限公司 | Touch screen device and debugging method thereof |
| CN101714041A (en) * | 2009-11-04 | 2010-05-26 | 深圳市山鹰科技有限公司 | Method for prolonging service life of infrared touch screen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101750990B1 (en) * | 2010-10-04 | 2017-07-12 | 삼성디스플레이 주식회사 | Display apparatus and method of driving the same |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1335548A (en) * | 2000-07-24 | 2002-02-13 | 北京汇冠科技有限公司 | Infrared touch screen performance improving structure and method |
| CN2824143Y (en) * | 2005-09-23 | 2006-10-04 | 成都吉锐触摸电脑有限公司 | Infrared touch screen with optical lens |
| CN101226447A (en) * | 2008-01-29 | 2008-07-23 | 广东威创视讯科技股份有限公司 | Touch screen device and debugging method thereof |
| CN101714041A (en) * | 2009-11-04 | 2010-05-26 | 深圳市山鹰科技有限公司 | Method for prolonging service life of infrared touch screen |
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