CN104808866B - A kind of adaptive infrared touch panel and its accuracy control method - Google Patents
A kind of adaptive infrared touch panel and its accuracy control method Download PDFInfo
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- CN104808866B CN104808866B CN201510153999.8A CN201510153999A CN104808866B CN 104808866 B CN104808866 B CN 104808866B CN 201510153999 A CN201510153999 A CN 201510153999A CN 104808866 B CN104808866 B CN 104808866B
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Abstract
The invention discloses a kind of adaptive infrared touch panel and its accuracy control method, wherein, the adaptive infrared touch panel includes infrared transmission module, infrared receiving module and processing module；Each infrared discharge lamps that the processing module compares in infrared transmission module send the signal strength of infrared signal and the size of preset value, and the signal strength of the infrared signal received according to infrared receiving module, the transmission power of the signal strength infrared discharge lamps different from preset value is adjusted, the processing module for making the signal strength of its infrared signal emitted equal with preset value.Processing module by adjusting the partially strong or on the weak side infrared discharge lamps of infrared signal transmission power, the signal strength for making its infrared signal emitted is equal with preset value, so as to improve the uniformity of infrared discharge lamps transmitting signal, efficiently solve the problems, such as that infrared touch panel mass produces signal normalization, the resolution ratio of infrared touch panel is improved simultaneously, adds the ability of its anti-sunlight interference.
Description
Technical field
The present invention relates to infrared touch technical field, more particularly to a kind of adaptive infrared touch panel and its precision controlling side
Method.
Background technology
Referring to Fig. 1, most of existing infrared touch panel installs infrared transmitting tube 60 using in 80 surrounding of touch panel
With infrared receiving tube 70, they form orthogonal infrared emission and receiving array according to one-to-one mapping relations, lead to
The energy value that is blocked of the infrared beam between acquisition infrared transmitting tube and infrared receiving tube is crossed, so as to position infrared touch point A
Position.
Existing infrared touch panel there are certain technological deficiency, such as：Since infrared discharge lamps and infrared receiver lamp are restricted
It is horizontal in production technology, it is difficult to accomplish the consistent of transmission power, cause the infrared signal intensity that each infrared discharge lamps are sent equal
It differs（Refer to Fig. 2）, homogeneity is bad, this can bring infrared touch panel software when the signal to lamp does normalization algorithm
Very big trouble is brought, influencing the resolution ratio of infrared touch panel further increases, while produces in enormous quantities in infrared touch module
When, it has not been convenient to unified signal criterion of acceptability is formulated to production test personnel, is unfavorable for the standardization for producing and testing；Separately
On the one hand since, containing many infrared ingredients, these infrared ingredients are easy to interfere with the reception letter of infrared touch panel in sunlight
Number so that receiving lamp energy spilling causes user that can not touch, and seriously affects the use of user.
Thus the prior art could be improved and improve.
The content of the invention
Part in view of above-mentioned deficiencies of the prior art, it is an object of the invention to provide a kind of adaptive infrared touch panel and
Its accuracy control method efficiently solve the problems, such ass that infrared touch panel mass produces signal normalization, while improves red
The resolution ratio of outer touch-screen adds the ability of its anti-sunlight interference.
In order to achieve the above object, this invention takes following technical schemes：
A kind of adaptive infrared touch panel, including：Infrared transmission module, infrared receiving module and processing module;
Each infrared discharge lamps that the processing module compares in infrared transmission module send the signal strength of infrared signal
With the size of preset value, and the signal strength of the infrared signal received according to infrared receiving module, adjustment signal strength with it is default
It is worth the transmission power of different infrared discharge lamps, the signal strength for making its infrared signal emitted is equal with preset value.
In the adaptive infrared touch panel, the processing module is additionally operable to the tune of record infrared discharge lamps transmission power
The adjustment number of transmission power is reached pre-determined number, signal strength infrared discharge lamps still different from preset value and sentenced by whole number
It is set to bad product.
In the adaptive infrared touch panel, the processing module includes：
Array setting unit, for defining an array, the member of the array when adaptive infrared touch panel initializes
Prime number amount is consistent with the quantity of infrared discharge lamps, and each element preserves the power adjustment parameter of corresponding infrared discharge lamps；
Signal strength acquiring unit, for obtaining each red of infrared transmission module transmitting that infrared receiving module receives
The signal strength of external signal；
Comparing unit, for comparing the big of the signal strength of each infrared discharge lamps in infrared transmission module and preset value
It is small；
Power adjustment parameter changes unit, for the infrared discharge lamps different from preset value to signal strength, passes through adjusting
Its power adjustment parameter makes infrared transmission module adjust the transmission power of the infrared discharge lamps, after transmission power adjustment, compares
The signal strength of the infrared discharge lamps and the size of preset value when signal strength is still with preset value difference, continue to adjust this red
The transmission power of outer emission lamp, until the signal strength of infrared signal that the infrared discharge lamps are sent is equal to preset value, in signal
When intensity is equal to preset value, by the update of corresponding power adjustment parameter into corresponding array element.
In the adaptive infrared touch panel, the preset value is the adaptive infrared touch panel scanning complete one
During frame data, the average value of the signal strength of all infrared signals.
In the adaptive infrared touch panel, the infrared transmission module includes：
Pressure unit, for by external dc electricity reduced output voltage, power supply to be provided for infrared transmission module.
Power adjustment unit, for the control signal that receiving processing module is sent, adjusting pressure unit is exported to be sent out to gating
Penetrate the voltage of unit；
Gated transmission unit for the control signal that receiving processing module is sent, controls the break-make of each infrared discharge lamps；
The voltage input end of the output terminal connection gated transmission unit of the pressure unit, the signal of the pressure unit are defeated
Enter the signal output part of end connection power adjustment unit.
The accuracy control method of the infrared touch panel, includes the following steps：
Compare each infrared discharge lamps and send the signal strength of infrared signal and the size of preset value；
The transmission power of the signal strength infrared discharge lamps different from preset value is adjusted, makes the letter of its infrared signal emitted
Number intensity is equal with preset value.
In the accuracy control method of the infrared touch panel, the adjustment signal strength infrared hair different from preset value
The transmission power of shot-light, the step for making the signal strength of its infrared signal emitted equal with preset value, further includes step：
The adjustment number of infrared discharge lamps transmission power is recorded, the adjustment number of transmission power is reached into pre-determined number, letter
Number intensity infrared discharge lamps still different from preset value are determined as bad product.
In the accuracy control method of the infrared touch panel, each infrared discharge lamps of comparison send infrared signal
Before the step of signal strength and the size of preset value, the accuracy control method further includes step：
Define an array when the infrared touch panel initializes, the number of elements of the array and infrared discharge lamps
Quantity is consistent, and each element preserves the power adjustment parameter of corresponding infrared discharge lamps；
Obtain the signal strength for the infrared signal that each infrared discharge lamps are sent.
In the accuracy control method of the infrared touch panel, the adjustment signal strength infrared hair different from preset value
The transmission power of shot-light, the step for making the signal strength of its infrared signal emitted equal with preset value include：
The infrared discharge lamps different from preset value to signal strength, it is red to adjust this by adjusting its power adjustment parameter
The transmission power of outer emission lamp；
After transmission power adjustment, compare the signal strength of the infrared discharge lamps and the size of preset value；
When signal strength is still with preset value difference, continue to adjust the transmission power of the infrared discharge lamps, until this is infrared
The signal strength for the infrared signal that emission lamp is sent is equal to preset value；When signal strength is identical with preset value, by corresponding work(
Rate adjustment parameter is updated into corresponding array element.
In the accuracy control method of the infrared touch panel, the preset value is the adaptive infrared touch panel scanning
During a complete frame data, the average value of the signal strength of all infrared signals.
Compared to the prior art, adaptive infrared touch panel and its accuracy control method provided by the invention, by comparing
The signal strength of infrared signal and the size of preset value that each infrared discharge lamps are sent, it is partially strong or on the weak side to obtain infrared signal
Infrared discharge lamps, then adjust its transmission power, make its emit infrared signal signal strength it is equal with preset value, thus
The uniformity of infrared discharge lamps transmitting signal is improved, efficiently solves infrared touch panel large-scale production signal normalization
Problem, while the resolution ratio of infrared touch panel is improved, add the ability of its anti-sunlight interference.
Description of the drawings
Fig. 1 is the hardware structure diagram of existing infrared touch panel.
Fig. 2 is the signal strength statistical chart of the infrared signal that each infrared discharge lamps are sent in existing infrared touch panel.
Fig. 3 is the structure diagram of adaptive infrared touch panel provided by the invention.
Fig. 4 provides the structure diagram of processing module in adaptive infrared touch panel for the present invention.
Fig. 5 provides the structure diagram of infrared transmission module in adaptive infrared touch panel for the present invention.
Fig. 6 provides the circuit diagram of infrared transmission module in adaptive infrared touch panel for the present invention.
Fig. 7 is the signal of the infrared signal that each infrared discharge lamps are sent in adaptive infrared touch panel provided by the invention
Intensity statistics figure.
Fig. 8 is the method flow diagram of precision of infrared touch screen control method provided by the invention.
Fig. 9 is the method flow diagram before step S10 in precision of infrared touch screen control method provided by the invention.
Figure 10 is the specific method flow chart of step S20 in precision of infrared touch screen control method provided by the invention.
Specific embodiment
The present invention provides a kind of adaptive infrared touch panel and its accuracy control method, and it is red to find out transmitting by processing module
The too strong or excessively weak infrared discharge lamps of external signal, adjust its transmission power, the infrared signal one for sending each infrared discharge lamps
It causes, realizes automatically controlling for precision of infrared touch screen, efficiently solve infrared touch panel large-scale production signal normalization
The problem of, while the resolution ratio of infrared touch panel is improved, add the ability of its anti-sunlight interference.
To make the purpose of the present invention, technical solution and effect clearer, clear and definite, develop simultaneously embodiment pair referring to the drawings
The present invention is further described.It should be appreciated that specific embodiment described herein is not used to only to explain the present invention
Limit the present invention.
Referring to Fig. 3, adaptive infrared touch panel provided by the invention, including：Infrared transmission module 10, infrared receiving
Block 20 and processing module 30.
The infrared transmission module 10 has several infrared discharge lamps, for driving each infrared discharge lamps transmitting red
External signal, and according to the control of processing module 30, adjust the transmission power of each infrared discharge lamps.Current infrared touch panel
In, infrared discharge lamps cannot generally adjust or individually adjust transmission power, and adaptive infrared touch panel provided by the invention
In, the power of each infrared discharge lamps can be adjusted by infrared transmission module 10, coordinate the control of processing module 30, it can
So that the signal that each infrared discharge lamps are sent is consistent, convenient for when infrared touch module is produced in enormous quantities, production test
Personnel formulate unified signal criterion of acceptability, are conducive to the standardization for producing and testing, while improve point of infrared touch panel
Resolution.
Infrared receiving module 20, for receiving the infrared signal that each infrared discharge lamps are sent, and by the letter of infrared signal
Number intensity is exported to processing module 30.
Processing module 30, each infrared discharge lamps for comparing in infrared transmission module 10 send the signal of infrared signal
The size of intensity and preset value, and the signal strength of the infrared signal received according to infrared receiving module 20, adjust signal strength
The transmission power of the infrared discharge lamps different from preset value, specifically infrared transmission module 10 adjusts its transmission power in order to control, makes
The signal strength of its infrared signal emitted is equal with preset value.Preferably, the processing module 30 is touch-screen CPU.It is described
Preset value can be a numerical intervals or specific value, specifically can be according to the specification or essence of infrared touch panel
Degree demand is set.Preferably, when the preset value scans a complete frame data for the adaptive infrared touch panel, Suo Youhong
The average value of the signal strength of external signal；The preset value calculates gained by processing module 30.Although each infrared touch panel hair
The total infrared signal gone out is not necessarily identical, but by calculating of the processing module 30 to preset value, can realize automatic setting
Preset value without manually setting, greatly improves production efficiency.
Adaptive infrared touch panel provided by the invention, using processing module 30 compare each infrared discharge lamps send it is red
The signal strength of external signal and the size of preset value obtain the partially strong or on the weak side infrared discharge lamps of infrared signal, then control
Infrared transmission module 10 adjusts its transmission power, and the signal strength for making its infrared signal emitted is equal with preset value, thus
The uniformity of infrared discharge lamps transmitting signal is improved, efficiently solves infrared touch panel large-scale production signal normalization
Problem, while the resolution ratio of infrared touch panel is improved, add the ability of its anti-sunlight interference.
Further, the processing module 30 is additionally operable to the adjustment number of record infrared discharge lamps transmission power, will emit
The adjustment number of power reaches pre-determined number, signal strength infrared discharge lamps still different from preset value and is determined as bad product.It is described
Pre-determined number is set according to actual production demand.That is, after the power adjustment that infrared discharge lamps pass through pre-determined number, send
Infrared signal be still unsatisfactory for requiring, illustrate the infrared discharge lamps there are quality problem, the processing module 30 is determined as
Bad product simultaneously passes through production test software and reports.When carrying out infrared touch panel test, only processing module 30 need to be connected to computer
On, you can it detects the quality of infrared discharge lamps automatically by processing module 30, is conducive to mass produce and detect, effectively carry
The high yields of infrared discharge lamps, the processing module 30 carried using infrared touch panel are detected, also simplify test and set
It is standby, save testing cost.
Further, referring to Fig. 4, the processing module 30 includes：Array setting unit 310, signal strength obtain
Unit 320, comparing unit 330, power adjustment parameter modification unit 340 and bad product detection unit 350.
The array setting unit 310, for defining an array, the number when adaptive infrared touch panel initializes
The number of elements of group is consistent with the quantity of infrared discharge lamps, and each element preserves the power regulation of corresponding infrared discharge lamps
Parameter.
The signal strength acquiring unit 320, for obtaining the infrared transmission module transmitting that infrared receiving module receives
Each infrared signal signal strength.Specifically for after the complete frame of adaptive infrared touch panel initialization scan, obtaining
The signal for taking each infrared signal that each infrared discharge lamps for the infrared transmission module that infrared receiving module receives send is strong
Degree.
The comparing unit, for comparing the signal strength and preset value of each infrared discharge lamps in infrared transmission module
Size.
The power adjustment parameter changes unit, for the infrared discharge lamps different from preset value to signal strength, passes through
Its power adjustment parameter is adjusted, infrared transmission module is made to adjust the transmission power of the infrared discharge lamps, after transmission power adjustment,
Compare the signal strength of the infrared discharge lamps and the size of preset value, when signal strength is still with preset value difference, continue to adjust
The transmission power of the infrared discharge lamps, until the signal strength of infrared signal that the infrared discharge lamps are sent is equal to preset value,
When signal strength is equal to preset value, by the update of corresponding power adjustment parameter into corresponding array element.If infrared emission mould
It is there are the infrared discharge lamps that multiple signal strengths are different from preset value in block, then different from preset value to signal strength red successively
The transmission power of outer emission lamp is adjusted, i.e. adjusting the transmission power of an infrared discharge lamps, make its signal strength with
After preset value is identical, then the transmission power of next infrared distribution shot-light is adjusted.
The bad product detection unit 350, for recording the adjustment number of infrared discharge lamps transmission power, by transmission power
Adjustment number reaches pre-determined number, signal strength infrared discharge lamps still different from preset value and is determined as bad product.
After initialization scan, that is, the judgement and adjustment of infrared emission modulating signal are carried out, has accomplished to detect as early as possible and send out as early as possible
Now and adjust.The power adjustment parameter of each infrared discharge lamps is saved in the corresponding element of array, is joined convenient for power regulation
Several calling, modification and updates enables processing module 30 to automatically adjust the transmission power of undesirable infrared discharge lamps, most
It is eventually consistent the infrared signal that each infrared discharge lamps are sent, improves the touch precision of infrared touch panel.
Referring to Fig. 5, the infrared transmission module includes：Pressure unit 110, power adjustment unit 120 and gated transmission
Unit 130.
The pressure unit 110, for by external dc electricity reduced output voltage, providing power supply for infrared transmission module, specifically
Power supply is provided for gated transmission unit 130.
The power adjustment unit 120, for the control that sends of power adjustment parameter modification unit of receiving processing module
Signal adjusts pressure unit 110 and exports to the voltage of gated transmission unit 130.
Gated transmission unit 130, for the control signal that sends of power adjustment parameter modification unit of receiving processing module,
Control the break-make of each infrared discharge lamps.
The voltage input end of the output terminal connection gated transmission unit 130 of the pressure unit 110, the pressure unit
The signal output part of 110 signal input part connection power adjustment unit 120.The switching signal of the gated transmission unit 130
The signal input part of input terminal, gating signal input terminal and power adjustment unit 120 is all connected with the power regulation ginseng of processing module
Number modification unit.
The processing module realizes the control to 130 input voltage of gated transmission unit by power adjustment unit 120
System, it is achieved thereby that the adjusting to each infrared discharge lamps transmission power；By controlling gated transmission unit 130, realize pair
The power regulation of any one infrared discharge lamps.
Referring to Fig. 6, the pressure unit 110 includes the first capacitance C1, decompression chip U1, the electricity of first resistor R1 and second
Hinder R2, the VI ends of one end connection external 5V DC power supply terminals J1 and decompression chip U1 of the first capacitance C1（That is the electricity of chip
Press input terminal）, the other end ground connection of the first capacitance C1；Two VO ends of the decompression chip U1（That is the voltage of chip is defeated
Outlet）Output terminal for pressure unit 110, connection gated transmission unit 130 voltage input end and pass through first resistor R1 and connect
The GND ends of decompression chip U1 and one end of second resistance R2 are connect, the other end for reaching second resistance R2 is the letter of pressure unit 110
Number input terminal, the signal output part for connecting power adjustment unit 120.Preferably, the model of the decompression chip U1
AIC1117。
The power adjustment unit 120 selects 1 analog switch U2,3rd resistor R3, the 4th resistance R4, the 5th resistance including 8
R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9 and the tenth resistance R10；Described 8 select 1 analog switch
The X ends of U2 are grounded by 3rd resistor R3, and described 8 select the X0 ends of 1 analog switch U2 as the signal of the power adjustment unit 120
Output terminal, the other end for connecting second resistance R2, the X1 ends and the 5th that 1 analog switch U2 is also selected by the 4th resistance R4 connections 8
One end of resistance R5, the other end of the 5th resistance R5 connect the one of the 8 X2 ends for selecting 1 analog switch U2 and the 6th resistance R6
The X3 ends of 1 analog switch U2 and one end of the 7th resistance R7 are selected in end, the other end connection 8 of the 6th resistance R6, and the described 7th
The X4 ends of 1 analog switch U2 and one end of the 8th resistance R8 are selected in the other end connection 8 of resistance R7, and the 8th resistance R8's is another
The X5 ends of 1 analog switch U2 and one end of the 9th resistance R9 are selected in end connection 8, and 1 mould is selected in the other end connection 8 of the 9th resistance R9
Intend the X6 ends of switch U2 and one end of the tenth resistance R10, the other end connection 8 of the tenth resistance R10 selects 1 analog switch U2's
X7 ends；Described 8 select the INH ends of 1 analog switch U2 to be grounded, and described 8 select the A ends, B ends and C-terminal of 1 analog switch U2 as power regulation
The power adjustment parameter that signal input part, the receiving processing module of unit 120 are sent.That is, described power adjustment parameter is three
These three level signals correspondence is input in the described 8 A ends, B ends and C-terminal for selecting 1 analog switch U2, you can real by level signal
Eight output terminals of 1 analog switch U2 are now selected 8（X0 ends, X1 ends ..., X7 ends）Control, so as to change decompression chip U1
Export the adjusting to the voltage of gated transmission unit 130, realized to infrared discharge lamps transmission power.
Power adjustment unit 120 provided by the invention, the processing module power adjustment parameter modification unit only need it is defeated
Go out three level signals and control to power adjustment unit 120 can be realized, simplify control program, reduce to processing module
Hardware requirement.
The gated transmission unit 130 includes the second capacitance C2, the 11st resistance R11, the 12nd resistance R12, the 13rd
Resistance R13, the 14th resistance R14, the 15th resistance R15, the 16th resistance R16, the 17th resistance R17, the 18th resistance
R18, the first triode Q1, the second triode Q2, third transistor Q3, the 4th triode Q4, the 5th triode Q5, the six or three pole
It is pipe Q6, the 7th triode Q7, the first infrared discharge lamps D1, the second infrared discharge lamps D2, the 3rd infrared discharge lamps D3, the 4th infrared
Emission lamp D4, the 5th infrared discharge lamps D5 and the 6th infrared discharge lamps D6；One end of the 11st resistance R11 is the gating
Switch signal input end, the connection processing module of transmitter unit 130, the other end connection the 12nd of the 11st resistance R11
One end of resistance R12 and the base stage of the first triode Q1；The other end of the 12nd resistance R12 connects the first triode Q1's
The VO ends of emitter, one end of the second capacitance C2 and decompression chip U1, one end of the second capacitance C2 is gated transmission unit
130 voltage input end, the VO ends for connecting decompression chip U1, the other end ground connection of the second capacitance C2；One or three pole
The collector connection anode of the first infrared discharge lamps D1 of pipe Q1, the anode of the second infrared discharge lamps D2, the 3rd infrared discharge lamps
The anode of D3, the anode of the 4th infrared discharge lamps D4, the anode of the 5th infrared discharge lamps D5 and the 6th infrared discharge lamps D6 are just
Pole；The cathode of the first infrared discharge lamps D1 is by the collector of the 13rd resistance R13 the second triodes of connection Q2, and described
The cathode of two infrared discharge lamps D2 passes through the collector of the 14th resistance R14 connection third transistors Q2, the 3rd infrared hair
The cathode of shot-light D3 by the collector of the 4th triode Q4 of the 15th resistance R15 connections, the 4th infrared discharge lamps D4's
Cathode is passed through by the collector of the 5th triode Q5 of the 16th resistance R16 connections, the cathode of the 5th infrared discharge lamps D5
The collector of the 6th triode Q6 of 17th resistance R17 connections, the cathode of the 6th infrared discharge lamps D6 pass through the 18th electricity
Hinder the collector of the 7th triode Q7 of R18 connections；The emitter of the second triode Q2, the emitter of third transistor Q3,
The emitter of 4th triode Q4, the emitter of the 5th triode Q5, the emitter and the 7th triode Q7 of the 6th triode Q6
Emitter ground connection；The base stage of the second triode Q2, the base stage of third transistor Q3, the base stage of the 4th triode Q4,
The base stage of the base stage of five triode Q5, the base stage of the 6th triode Q6 and the 7th triode Q7 is the gated transmission unit 130
Gating signal input terminal, connection processing module.The first triode Q1 be PNP type triode, the second triode Q2,
Third transistor Q3, the 4th triode Q4, the 5th triode Q5, the 6th triode Q6 and the 7th triode Q7 are three pole of NPN type
Pipe, certainly, the first triode Q1, the second triode Q2, third transistor Q3, the 4th triode Q4, the 5th triode Q5,
6th triode Q6 and the 7th triode Q7 can also be metal-oxide-semiconductor or other switches, as long as switch control can be realized, this
Invention is not restricted this.
It will be appreciated from fig. 6 that the power adjustment parameter modification unit of the processing module need to only export a level signal to choosing
The switch signal input end of logical transmitter unit 130（One end of 11st resistance R11）, you can control the logical of all infrared discharge lamps
It is disconnected（Light on and off）；The power adjustment parameter modification unit of the processing module need to only export six level signals and give gated transmission unit
130 gating signal input terminal, you can control the break-make of any one infrared discharge lamps（Light on and off）.The gated transmission unit
130 circuit structure enables processing module easily to control it, and simplifies control program, reduces to processing module
Hardware requirement.
In conclusion it is difficult place that adaptive infrared touch panel provided by the invention can solve traditional infrared touch-screen simultaneously
The sunlight interference problem of reason.Traditional infrared touch-screen is when there is sunlight interference, due to including centainly infrared into branch in sunlight
Increase the energy of infrared touch panel transmitting terminal, infrared touch panel receiving end signal is caused to overflow, causes user that can not touch.This hair
Whether the energy that bright adaptive infrared touch panel can monitor infrared discharge lamps by processing module is significantly greater than its average value,
So as to update its corresponding power adjustment parameters, the power of infrared discharge lamps is reduced to ensure the energy of the infrared signal received
It does not spill over, so as to fundamentally solve the problems, such as the anti-sunlight interference of infrared touch panel.It can be seen that from Fig. 7, the present invention provides
Adaptive infrared touch panel in, the infrared signal that each infrared discharge lamps are sent nearly all is identical, and homogeneity is very good,
The direct sunlight of full angle 20000lux can be supported on infrared touch panel, still can ensure that infrared touch panel normally makes
With.
Referring to Fig. 8, based on the adaptive infrared touch panel that a upper embodiment provides, the present invention also provides a kind of infrared tactile
The accuracy control method of screen is touched, including infrared transmission module as described above, infrared receiving module and processing module, specific method
Step is as follows：
S10, each infrared discharge lamps of comparison send the signal strength of infrared signal and the size of preset value.Specifically, institute
It states the more each infrared discharge lamps of processing module and sends the signal strength of infrared signal and the size of preset value.
The transmission power of S20, adjustment the signal strength infrared discharge lamps different from preset value, the infrared signal for emitting it
Signal strength it is equal with preset value.Specifically, for the signal strength infrared discharge lamps different from preset value, the processing mould
Block controls the infrared transmission module to adjust its transmission power, makes its signal strength of infrared signal emitted and preset value phase
Deng.
Wherein, the step S20 further includes step：S200, the adjustment number for recording infrared discharge lamps transmission power, will send out
The adjustment number for penetrating power reaches pre-determined number, signal strength infrared discharge lamps still different from preset value and is determined as bad product.Tool
Body, the adjustment number of the bad product detection unit record infrared discharge lamps transmission power of the processing module, by transmission power
Adjustment number reaches pre-determined number, signal strength infrared discharge lamps still different from preset value and is determined as bad product.
Further, referring to Fig. 9, before the step S10, step is further included：
S110, an array, the number of elements of the array and infrared hair are defined when the infrared touch panel initializes
The quantity of shot-light is consistent, and each element preserves the power adjustment parameter of corresponding infrared discharge lamps.Specifically, the processing
The array setting unit of module defines an array when the infrared touch panel initializes, the number of elements of the array with it is red
The quantity of outer emission lamp is consistent, and each element preserves the power adjustment parameter of corresponding infrared discharge lamps.
S120, the signal strength for obtaining the infrared signal that each infrared discharge lamps are sent.Specifically, at the beginning of infrared touch panel
After beginningization scans a complete frame, the infrared receiving module obtains the signal strength of each infrared signal.
Further, referring to Fig. 10, the step S20 is specifically included：
S210, the infrared discharge lamps different from preset value to signal strength, by adjusting its power adjustment parameter, to adjust
The transmission power of the infrared discharge lamps.Specifically, the infrared discharge lamps different from preset value to signal strength, the processing module
Power adjustment parameter modification unit adjust its power adjustment parameter by controlling the infrared transmission module, it is red to adjust this
The transmission power of outer emission lamp.
S220, transmission power adjustment after, compare the signal strength of the infrared discharge lamps and the size of preset value.Specifically
, after transmission power adjustment, the comparing unit of the processing module compares the signal strength and preset value of the infrared discharge lamps
Size.
S230, when signal strength is still with preset value difference, continue to adjust the transmission power of the infrared discharge lamps, until this
The signal strength for the infrared signal that infrared discharge lamps are sent is equal to preset value；When signal strength is identical with preset value, by correspondence
Power adjustment parameter update into corresponding array element.That is, when signal strength is still with preset value difference, the processing mould
The power adjustment parameter modification unit of block adjusts the work(of corresponding infrared discharge lamps again by the control infrared transmission module
Rate adjustment parameter, after transmission power adjustment, the comparing unit of the processing module compares the signal of the infrared discharge lamps again
The size of intensity and preset value if signal strength is still different from preset value, continues to adjust the transmission power of the infrared discharge lamps, according to
This Xun Huan, until the signal strength for the infrared signal that the infrared discharge lamps are sent is equal to preset value.When signal strength and preset value
When identical, the power adjustment parameter modification unit of the processing module updates corresponding power adjustment parameter to corresponding array
In element.
Wherein, when the preset value scans a complete frame data for the adaptive infrared touch panel, all infrared letters
Number signal strength average value.If there are the infrared emissions that multiple signal strengths are different from preset value in infrared transmission module
Lamp, then the transmission power of infrared discharge lamps different from preset value to signal strength is adjusted successively, i.e. is adjusting one
The transmission power of infrared discharge lamps, after making its signal strength identical with preset value, then the hair to next infrared distribution shot-light
Power is penetrated to be adjusted.
Due to the accuracy control method of the infrared touch panel principle and detail technical features in a upper embodiment
It elaborates, details are not described herein.
It is understood that for those of ordinary skills, it can be with technique according to the invention scheme and its hair
Bright design is subject to equivalent substitution or change, and all these changes or replacement should all belong to the guarantor of appended claims of the invention
Protect scope.
Claims (8)
1. a kind of adaptive infrared touch panel, which is characterized in that including：Infrared transmission module, infrared receiving module and processing mould
Block;
Each infrared discharge lamps that the processing module compares in infrared transmission module send the signal strength of infrared signal with it is pre-
If the size of value, and the signal strength of the infrared signal received according to infrared receiving module, adjustment signal strength and preset value are not
The transmission power of same infrared discharge lamps, the signal strength for making its infrared signal emitted are equal with preset value；
When in the infrared transmission module there are during multiple signal strengths infrared discharge lamps different from preset value, then successively to letter
The transmission power of number intensity infrared discharge lamps different from preset value is adjusted；
The processing module includes：
Array setting unit, for defining an array, first prime number of the array when adaptive infrared touch panel initializes
Amount is consistent with the quantity of infrared discharge lamps, and each element preserves the power adjustment parameter of corresponding infrared discharge lamps；
Signal strength acquiring unit, for obtaining each infrared letter for the infrared transmission module transmitting that infrared receiving module receives
Number signal strength；
Comparing unit, for comparing the signal strength of each infrared discharge lamps and the size of preset value in infrared transmission module；
Power adjustment parameter changes unit, for the infrared discharge lamps different from preset value to signal strength, by adjusting its work(
Rate adjustment parameter makes infrared transmission module adjust the transmission power of the infrared discharge lamps, and after transmission power adjustment, it is red to compare this
The signal strength of outer emission lamp and the size of preset value when signal strength is still with preset value difference, continue to adjust the infrared hair
The transmission power of shot-light, until the signal strength of infrared signal that the infrared discharge lamps are sent is equal to preset value, in signal strength
During equal to preset value, by the update of corresponding power adjustment parameter into corresponding array element；
The infrared transmission module includes：
Pressure unit, for by external dc electricity reduced output voltage, power supply to be provided for infrared transmission module；
Power adjustment unit, for the control signal that receiving processing module is sent, adjusting pressure unit, which exports, gives gated transmission list
The voltage of member；
Gated transmission unit for the control signal that receiving processing module is sent, controls the break-make of each infrared discharge lamps；
The voltage input end of the output terminal connection gated transmission unit of the pressure unit, the signal input part of the pressure unit
Connect the signal output part of power adjustment unit；
The switch signal input end of the gated transmission unit, the gating signal input terminal of the gated transmission unit and the work(
The signal input part of rate adjustment unit is all connected with the power adjustment parameter modification unit；
The pressure unit includes the first capacitance, decompression chip, first resistor and second resistance, and one end of first capacitance connects
It connects external dc feeder ear and is depressured the voltage input end of chip, the other end ground connection of first capacitance；The decompression chip
Two voltage output ends for pressure unit output terminal, connect the voltage input end of gated transmission unit and pass through described first
The GND ends of the resistance connection decompression chip and one end of the second resistance, reach the other end of the second resistance for institute
State signal input part, the signal output part of the connection power adjustment unit of pressure unit；
The power adjustment unit selects 1 analog switch, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th including 8
Resistance, the 8th resistance, the 9th resistance and the tenth resistance；Described 8 select the X ends of 1 analog switch to be grounded by the 3rd resistor, institute
State 8 select the X0 ends of 1 analog switch for the signal output part of the power adjustment unit, the connection second resistance the other end,
The X1 ends of 1 analog switch and one end of the 5th resistance, the 5th resistance are also selected by the 4th resistance connection described 8
Other end connection described 8 select the X2 ends of 1 analog switch and one end of the 6th resistance, the other end of the 6th resistance connects
The described 8 X3 ends for selecting 1 analog switch and one end of the 7th resistance are connect, the other end connection described 8 of the 7th resistance selects 1
1 analog switch is selected in the X4 ends of analog switch and one end of the 8th resistance, the other end connection described 8 of the 8th resistance
X5 ends and one end of the 9th resistance, the other end of the 9th resistance connect described 8 X6 ends for selecting 1 analog switch and described
One end of tenth resistance, the other end of the tenth resistance connect the described 8 X7 ends for selecting 1 analog switch；Described 8 select 1 simulation to open
A ends, B ends and the C-terminal of pass are the signal input part of the power adjustment unit, receive the power regulation that the processing module is sent
Parameter.
2. adaptive infrared touch panel according to claim 1, which is characterized in that the processing module is additionally operable to record red
The adjustment number of transmission power is reached pre-determined number, signal strength still with presetting by the adjustment number of outer emission lamp transmission power
It is worth different infrared discharge lamps and is determined as bad product.
3. adaptive infrared touch panel according to claim 1, which is characterized in that the preset value is described adaptive red
When outer touch-screen scans a complete frame data, the average value of the signal strength of all infrared signals.
4. a kind of accuracy control method of infrared touch panel as described in claim 1, which is characterized in that include the following steps：
Compare each infrared discharge lamps and send the signal strength of infrared signal and the size of preset value；
The transmission power of the signal strength infrared discharge lamps different from preset value is adjusted, the signal for making its infrared signal emitted is strong
Degree is equal with preset value.
5. the accuracy control method of infrared touch panel according to claim 4, which is characterized in that the adjustment signal strength
The transmission power of the infrared discharge lamps different from preset value, the signal strength for making its infrared signal emitted are equal with preset value
Step further includes step：
The adjustment number of infrared discharge lamps transmission power is recorded, it is strong that the adjustment number of transmission power is reached into pre-determined number, signal
Degree infrared discharge lamps still different from preset value are determined as bad product.
6. the accuracy control method of infrared touch panel according to claim 4, which is characterized in that the comparison is each infrared
Emission lamp send infrared signal signal strength and preset value size the step of before, the accuracy control method further includes
Step：
An array, the number of elements of the array and the quantity of infrared discharge lamps are defined when the infrared touch panel initializes
Unanimously, each element preserves the power adjustment parameter of corresponding infrared discharge lamps；
Obtain the signal strength for the infrared signal that each infrared discharge lamps are sent.
7. the accuracy control method of infrared touch panel according to claim 6, which is characterized in that the adjustment signal strength
The transmission power of the infrared discharge lamps different from preset value, the signal strength for making its infrared signal emitted are equal with preset value
Step includes：
The infrared discharge lamps different from preset value to signal strength, by adjusting its power adjustment parameter, to adjust the infrared hair
The transmission power of shot-light；
After transmission power adjustment, compare the signal strength of the infrared discharge lamps and the size of preset value；
When signal strength is still with preset value difference, continue to adjust the transmission power of the infrared discharge lamps, until the infrared emission
The signal strength for the infrared signal that lamp is sent is equal to preset value；When signal strength is identical with preset value, by corresponding power tune
Parameter update is saved into corresponding array element.
8. the accuracy control method of infrared touch panel according to claim 4, which is characterized in that the preset value is described
When adaptive infrared touch panel scans a complete frame data, the average value of the signal strength of all infrared signals.
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| CN105785379B (en) * | 2016-03-07 | 2019-01-11 | 上海摩软通讯技术有限公司 | Infrared sensor and handheld device |
| CN106995988B (en) * | 2017-03-23 | 2020-04-03 | 杰克缝纫机股份有限公司 | Self-adaptive system of sewing machine cloth detection sensor and adjusting method thereof |
| CN110471573B (en) * | 2019-08-01 | 2023-01-31 | 广州华欣电子科技有限公司 | Infrared signal adjusting method, device, equipment, medium and infrared touch frame |
| CN114375033A (en) * | 2021-12-28 | 2022-04-19 | 中国电信股份有限公司 | Signal intensity adjusting method, base station system, base station and medium |
| CN114578971B (en) * | 2022-03-29 | 2023-12-05 | 广东万和电气有限公司 | Infrared induction detection system and method |
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| CN100578433C (en) * | 2008-01-29 | 2010-01-06 | 广东威创视讯科技股份有限公司 | Touch screen device and debugging method thereof |
| CN101901088B (en) * | 2010-08-06 | 2012-06-20 | 鸿富锦精密工业（深圳）有限公司 | Infrared control device |
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