CN111352540A - Method and device for detecting outer frame of infrared touch screen - Google Patents
Method and device for detecting outer frame of infrared touch screen Download PDFInfo
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- CN111352540A CN111352540A CN201910446182.8A CN201910446182A CN111352540A CN 111352540 A CN111352540 A CN 111352540A CN 201910446182 A CN201910446182 A CN 201910446182A CN 111352540 A CN111352540 A CN 111352540A
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- 238000004590 computer program Methods 0.000 claims description 8
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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Abstract
The invention discloses a method for detecting an outer frame of an infrared touch screen, which comprises the following steps: triggering touch control, and receiving an infrared signal sent by the blocked infrared geminate transistor; according to the infrared signal, determining the infrared receiving frequency, the infrared receiving success rate and the coordinate position of the touch point; and analyzing the infrared receiving success rate of the same coordinate position and the infrared receiving frequency of different coordinate positions, and displaying the detection result. The invention also provides a device applied to the method for detecting the outer frame of the infrared touch screen, which comprises the following steps: a touch unit for initiating touch; an infrared light receiving unit for receiving an infrared light signal; the computing unit is used for determining the infrared receiving frequency, the infrared receiving success rate and the coordinate position of the touch point according to the infrared signal; the analysis unit is used for analyzing the infrared receiving success rate of the same coordinate position and the infrared receiving frequency of different coordinate positions to obtain a detection result; and the display unit is used for displaying the detection result.
Description
Technical Field
The invention relates to the technical field of touch control, in particular to a method and a device for detecting an outer frame of an infrared touch screen.
Background
The touch technology of the educational large screen is realized by adopting an infrared technology, and the touch screen is composed of an infrared emitter component and a receiving sensing element which are arranged on an outer frame of the touch screen. On the surface of the screen, an infrared detection network is formed, and any touch object can change the transmission of infrared rays on the touch point, so that the operation effect of the touch screen is realized by calculating the transmission distance.
After the current factory is produced, the qualification of the outer frame is often tested through artificial physical senses or simple multi-point touch equipment, and the problem existing in the aspect of touch is difficult to detect by the detection method. Once the touch response of the large-screen device is not sensitive enough, the large-screen device needs to be returned to the factory for repair. And the weight of the education large screen reaches 100KG, the transportation cost is high during repair, and the cost is huge. Therefore, a detection method and a detection device for improving the detection accuracy of large-screen equipment are needed.
Disclosure of Invention
In view of the above, the present invention is directed to an apparatus and a method for improving detection efficiency of an outer frame of an infrared touch screen.
Based on the above purpose, the method for detecting the outer frame of the infrared touch screen provided by the invention comprises the following steps:
triggering touch control, and receiving an infrared signal sent by the blocked infrared geminate transistor;
according to the infrared signal, determining the infrared receiving frequency, the infrared receiving success rate and the coordinate position of the touch point;
and analyzing the infrared receiving success rate of the same coordinate position and the infrared receiving frequency of different coordinate positions, and displaying the detection result.
In one embodiment, the step of determining the infrared receiving frequency of the touch point and the infrared receiving success rate includes:
and converting the infrared signals into electric signals, identifying the times of the received infrared rays, and calculating the infrared ray receiving frequency and the infrared ray receiving success rate within preset time.
In one embodiment, the infrared ray receiving success rate is a percentage of the number of times of receiving the infrared rays and a theoretical number of times of transmitting the infrared rays within a preset time.
In one embodiment, the preset time is 0.1-10 s.
In one embodiment, the step of determining the coordinate position of the touch point includes:
calculating the difference between the time for receiving the infrared signals and the time for transmitting the infrared signals by the blocked infrared pair tubes, and calculating the transmission distance of the infrared rays;
calculating the difference value between the screen width and the transmission distance to obtain the coordinate position of the touch point in the X axial direction of the screen;
and calculating the difference value between the screen length and the transmission distance to obtain the coordinate position of the touch point in the Y-axis direction of the screen.
In one embodiment, the step of analyzing the success rate of receiving infrared rays at the same coordinate position and the frequency of receiving infrared rays at different coordinate positions and displaying the detection result includes:
when the difference value of the infrared receiving frequencies corresponding to different coordinate positions is larger than a preset difference value and/or the infrared receiving success rate of the same coordinate position is smaller than a preset receiving success rate, the infrared receiving frequencies are all displayed as unqualified;
and when the difference of the infrared receiving frequencies corresponding to different coordinate positions is not greater than a preset difference value and the infrared receiving success rate of the same coordinate position is not greater than a preset receiving success rate, the infrared receiving frequency is displayed to be qualified.
In one embodiment, the preset difference is 2% to 5%; the preset receiving success rate is 97-99%.
In one embodiment, the step of analyzing the infrared receiving frequencies at different positions and determining whether the outer frame is qualified further includes:
and the coordinate position of the touch point corresponds to the infrared receiving frequency and the infrared receiving success rate one by one.
The invention also provides a device applied to the method for detecting the outer frame of the infrared touch screen, which comprises the following steps:
a touch unit for initiating touch;
an infrared light receiving unit for receiving an infrared light signal;
the computing unit is used for determining the infrared receiving frequency, the infrared receiving success rate and the coordinate position of the touch point according to the infrared signal;
the analysis unit is used for analyzing the infrared receiving success rate of the same coordinate position and the infrared receiving frequency of different coordinate positions to obtain a detection result;
and the display unit is used for displaying the detection result.
The present invention also provides an electronic device comprising: a processor, a memory, a display, a bus, and a computer program stored on the memory and executable on the processor;
the processor, the memory and the display finish mutual communication through the bus;
the processor, when executing the computer program, implements the method as described above.
As can be seen from the above, according to the method and the device for detecting the outer frame of the infrared touch screen, provided by the invention, the infrared receiving frequency, the infrared receiving success rate and the coordinate position of the touch point are calculated by receiving the infrared signal and according to the infrared signal; comparing the infrared ray receiving success rate and the preset success rate at the same coordinate position, and comparing the difference value of the infrared ray receiving frequency and the preset receiving frequency at the same coordinate position; when the infrared receiving success rate is not greater than the preset success rate, and/or the difference value of the infrared receiving frequency is not greater than the preset receiving frequency difference value, displaying that the infrared receiving success rate is unqualified; and when the infrared ray receiving success rate is not more than the preset success rate, and the difference value of the infrared ray receiving frequency is not more than the preset receiving frequency, displaying that the infrared ray receiving success rate is qualified. The method can be used for quickly and effectively detecting, the sensitivity of the outer frame of the infrared touch screen saves the detection time and the manpower input for detection, the repair rate is reduced, and the cost is reduced.
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Fig. 1 is a flowchart of a method for detecting an outer frame of an infrared touch screen according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
Referring to fig. 1, the present invention provides a method for detecting an outer frame of an infrared touch screen, including:
s100, triggering touch control, and receiving an infrared signal sent by the blocked infrared geminate transistor;
s200, determining the infrared receiving frequency, the infrared receiving success rate and the coordinate position of the touch point according to the infrared signal;
and S300, analyzing the infrared receiving success rate of the same coordinate position and the infrared receiving frequency of different coordinate positions, and displaying the detection result.
In step S100, after the touch is triggered at a certain position of the infrared touch screen, the infrared touch screen can receive the touch and send an infrared signal through the blocked infrared pair transistors disposed on the frame of the infrared touch screen.
In one embodiment, the touch is triggered by a detection device. For example, when the detection device is placed on the infrared touch screen, touch can be generated to block the transmission of infrared rays at the position where the detection device is placed.
Step S200 may include converting the infrared signal received in step S100 into an electrical signal, and identifying the number of times of the received infrared ray according to the electrical signal. And according to the times, calculating the infrared receiving frequency within the preset time.
Optionally, the number of times of receiving the infrared rays is recorded, and the success rate of receiving the infrared rays within a preset time is calculated according to the value of the number of times. The receiving success rate is the ratio of the number of times of receiving infrared rays within a preset time to a preset theoretical receiving number of times.
The preset time can be set to be 0.1-10 s so as to improve the detection efficiency.
Optionally, the step of determining the coordinate position of the touch point includes: and receiving a first coordinate position of a touch point sent by the infrared touch screen. The first coordinate position includes a first coordinate position along a transverse axis X-axis and a first coordinate position along a longitudinal axis Y-axis.
Specifically, after touch is triggered, the outer frame of the infrared touch screen detects and positions touch points by using infrared transmitting tube matrixes and receiving tube matrixes densely distributed in the directions of the X axis of the horizontal axis and the Y axis of the vertical axis. When scanning, after one infrared ray in one axial direction is found and confirmed to be blocked, the scanning is switched to the other axial direction to scan again, the other axial direction also can be found to be blocked, and then the positions of the two infrared pair tubes found to be blocked are reported to a host. The host can calculate the time difference between the infrared signals transmitted by the infrared pair transistors and the infrared signals received by the infrared pair transistors, and calculate the transmission distance of infrared rays. Calculating the difference value between the screen width and the transmission distance to obtain a first coordinate position of the touch point in the X-axis direction of the screen; and calculating the difference value between the screen length and the transmission distance to obtain a first coordinate position of the touch point in the Y-axis direction of the screen.
In another embodiment, the step of determining the coordinate position of the touch point comprises: and calculating a second coordinate position of the touch point. The calculation may be performed in a calculation unit of the detection device. The method comprises the steps of receiving the position of a touch point sent by a host, namely the position of an infrared pair transistor, and calculating the coordinate position of the touch point according to the length and the width of a screen input in advance. Calculating the difference between the time for receiving the infrared signals and the time for transmitting the infrared signals by the blocked infrared pair tubes, and calculating the transmission distance of the infrared rays; calculating the difference value between the screen width and the transmission distance to obtain a second coordinate position of the touch point in the X-axis direction of the screen; and calculating the difference value between the screen length and the transmission distance to obtain a second coordinate position of the touch point in the Y-axis direction of the screen.
Before the step of calculating the difference between the time of receiving the infrared signal and the time of emitting the infrared signal by the blocked infrared pair tube, the method can further comprise reading the time of receiving the infrared signal and the time of emitting the infrared signal by the blocked infrared pair tube.
After the step S200 and before the step S300, the coordinate position of the touch point may be in one-to-one correspondence with the infrared receiving frequency and the infrared receiving success rate, so as to facilitate subsequent analysis and improve the analysis efficiency. The coordinate position is a second coordinate position.
In step S300, when the difference between the infrared receiving frequencies corresponding to different coordinate positions is greater than a preset difference value, and/or the infrared receiving success rate of the same coordinate position is less than a preset receiving success rate, all the infrared receiving frequencies are indicated as being unqualified. And if and only if the difference of the infrared receiving frequencies corresponding to different coordinate positions is not greater than the preset difference value and the infrared receiving success rate of the same coordinate position is not greater than the preset receiving success rate, displaying that the infrared receiving frequency is qualified. The coordinate position is a second coordinate position.
And the preset difference value of the infrared receiving frequencies corresponding to different second coordinate positions is 2-5%. Within the numerical range, the quality performance of the infrared transmitting tube is tested, and the performance of the outer frame of the infrared touch screen can be well managed.
The preset infrared receiving success rate corresponding to the same second coordinate position is 97-99%. If the preset difference is too large or too small, the sensitivity of the outer frame cannot be well detected.
Optionally, step S300 further includes comparing the first coordinate position with the second coordinate position, analyzing whether the values are the same, and calculating a difference ratio. Specifically, the difference ratio is the percentage of the number of coordinate positions having different numerical values to the total number of coordinate positions. And when the percentage exceeds the preset percentage, displaying that the product is unqualified. The preset percentage is 2 to 5 percent. If the preset difference is too large or too small, the sensitivity of the outer frame cannot be well detected.
Accordingly, the determination process in step S300 is to indicate that the infrared receiving frequencies corresponding to different coordinate positions are not qualified when the difference is greater than a preset difference, and/or the infrared receiving success rate of the same coordinate position is less than a preset receiving success rate, and/or the difference ratio between the first coordinate position and the second coordinate position exceeds a preset percentage. And if and only if the difference of the infrared receiving frequencies corresponding to different coordinate positions is not more than the preset difference, and if the infrared receiving success rate of the same coordinate position is not more than the preset receiving success rate, and if the difference ratio of the first coordinate position to the second coordinate position is not more than the preset percentage, displaying that the infrared receiving frequency is qualified.
The invention also provides a detection device applied to the detection method of the outer frame of the infrared touch screen, which comprises the following steps:
a touch unit for initiating touch;
an infrared light receiving unit for receiving an infrared light signal;
the computing unit is used for determining the infrared receiving frequency, the infrared receiving success rate and the coordinate position of the touch point according to the infrared signal;
the analysis unit is used for analyzing the infrared receiving success rate of the same coordinate position and the infrared receiving frequency of different coordinate positions to obtain a detection result;
and the display unit is used for displaying the detection result.
The detection device can be arranged on the display screen in a bonding, adsorption and other modes. The touch control unit can be a probe, and can also be an electromagnetic pen point or a handwriting pen point. The display unit may be a display, a cathode ray tube display (CRT), a plasma display PDP, a liquid crystal display LCD, or the like.
Optionally, the detection device is a structure having a probe. During the use, fix the probe structure to on the education large-size screen through the thread gluing structure, then trigger the touch-control.
The present invention also provides an electronic device comprising: a processor, a memory, a display, a bus, and a computer program stored on the memory and executable on the processor;
the processor, the memory and the display finish mutual communication through the bus;
the processor, when executing the computer program, implements the method as described above.
The detection device for the outer frame of the infrared touch screen is synchronous with the infrared touch screen in time. Before the detection device is used, the real-time recording time of the device can be detected through a computer program, the real-time recording time of the infrared touch screen is detected, and the real-time recording time of the infrared touch screen is analyzed, compared and adjusted if necessary, so that the detection device and the infrared touch screen are synchronized in time. The size, including width and length, and model of the infrared touch screen can also be input by a computer program before the detection device is used. The infrared touch screen of a plurality of models can be input to improve the application universality of the detection device, and the detection of the education large screen with different sizes corresponding to various application scenes is met.
It should be noted that the frequency and success rate of receiving infrared rays by the detection device are substantially the same as those of transmitting infrared rays from the outer frame of the infrared touch panel. Therefore, whether the frequency and the success rate of infrared ray emission of the outer frame of the infrared touch screen accord with theoretical values or not can be judged through the frequency and the success rate of infrared ray receiving received by the detection device, and whether the outer frame of the infrared touch screen is qualified or not can be detected.
When the device is used, the device can be placed on an infrared touch screen type education large screen through the thread gluing, and touch control can be initiated at the position where the device is in contact with the infrared touch screen through the touch control unit of the device. At the moment, the detection device and the infrared touch screen both record the same first time, and the first time is the time when the infrared touch screen sends the infrared signal. The infrared light receiving unit of the detection device can receive infrared light emitted from the frame of the infrared touch screen and record the time of receiving the infrared light, and the time is recorded as a second time. An infrared transmitting tube matrix of a frame of the infrared touch screen can find that an infrared ray is blocked in the X axial direction after scanning, and can find that an infrared ray is blocked in the Y axial direction after switching to the Y axial direction for rescanning. And confirming the positions of the two infrared pair transistors which find the obstruction, and reporting the positions to the host. The host computer of detection device sends the position of infrared geminate transistor to detection device, and detection device's calculating unit can calculate the transmission time of infrared light through the difference of the first time of record and second time to through the formula, transmission distance is transmission time x transmission speed, can calculate the transmission distance of infrared light. Subtracting the transmission distance of infrared light from the width of the large screen input in advance in the calculation unit to calculate and obtain the coordinate value of the touch point on the X axis; and (4) subtracting the transmission distance of the infrared light according to the length of the large screen input in advance, and then calculating to obtain the coordinate value of the touch point on the Y axis. The calculating unit can also identify the times of the received infrared rays according to the electric signals, calculate the frequency of infrared ray receiving within 1s, and calculate the ratio of the times of the received infrared rays within 1s to the preset theoretical receiving times. The analysis unit corresponds the coordinate position and the receiving frequency, analyzes whether the receiving frequencies of different coordinate positions are the same or not, and analyzes the receiving frequency and the receiving success rate of the same coordinate position. And when the receiving frequency of different coordinate positions has a difference value larger than 2% -5%, and/or the receiving success rate of the same coordinate position is smaller than 97-99%, displaying that the receiving frequency is unqualified in the display unit. And when the difference value of the receiving frequencies of different coordinate positions is not more than 2% -5% and the receiving success rate of the same coordinate position is not less than 97-99%, displaying the result as qualified in the display unit.
According to the method and the device for detecting the outer frame of the infrared touch screen, provided by the invention, the infrared receiving frequency, the infrared receiving success rate and the coordinate position of a touch point are calculated by receiving an infrared signal and according to the infrared signal; comparing the infrared ray receiving success rate and the preset success rate at the same coordinate position, and comparing the difference value of the infrared ray receiving frequency and the preset receiving frequency at the same coordinate position; when the infrared receiving success rate is not greater than the preset success rate, and/or the difference value of the infrared receiving frequency is not greater than the preset receiving frequency difference value, displaying that the infrared receiving success rate is unqualified; and when the infrared ray receiving success rate is not more than the preset success rate, and the difference value of the infrared ray receiving frequency is not more than the preset receiving frequency, displaying that the infrared ray receiving success rate is qualified. The method can be used for quickly and effectively detecting, the sensitivity of the outer frame of the infrared touch screen saves the detection time and the manpower input for detection, the repair rate is reduced, and the cost is reduced.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
In addition, well known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures for simplicity of illustration and discussion, and so as not to obscure the invention. Furthermore, devices may be shown in block diagram form in order to avoid obscuring the invention, and also in view of the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform within which the present invention is to be implemented (i.e., specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the invention, it should be apparent to one skilled in the art that the invention can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative instead of restrictive.
While the present invention has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic ram (dram)) may use the discussed embodiments.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A method for detecting an outer frame of an infrared touch screen is characterized by comprising the following steps:
triggering touch control, and receiving an infrared signal sent by the blocked infrared geminate transistor;
according to the infrared signal, determining the infrared receiving frequency, the infrared receiving success rate and the coordinate position of the touch point;
and analyzing the infrared receiving success rate of the same coordinate position and the infrared receiving frequency of different coordinate positions, and displaying the detection result.
2. The method for detecting the outer frame of the infrared touch screen according to claim 1, wherein the step of determining the infrared receiving frequency and the infrared receiving success rate of the touch point comprises:
and converting the infrared signals into electric signals, identifying the times of the received infrared rays, and calculating the infrared ray receiving frequency and the infrared ray receiving success rate within preset time.
3. The method for detecting the outer frame of the infrared touch screen as recited in claim 2, wherein the infrared ray receiving success rate is a percentage of the number of times of the received infrared rays to a theoretical number of times of infrared ray emission within a preset time.
4. The method for detecting the outer frame of the infrared touch screen as claimed in claim 3, wherein the preset time is 0.1-10 s.
5. The method for detecting the outer frame of the infrared touch screen as claimed in claim 1, wherein the step of determining the coordinate position of the touch point comprises:
calculating the difference between the time for receiving the infrared signals and the time for transmitting the infrared signals by the blocked infrared pair tubes, and calculating the transmission distance of the infrared rays;
calculating the difference value between the screen width and the transmission distance to obtain the coordinate position of the touch point in the X axial direction of the screen;
and calculating the difference value between the screen length and the transmission distance to obtain the coordinate position of the touch point in the Y-axis direction of the screen.
6. The method for detecting the outer frame of the infrared touch screen according to claim 1, wherein the step of analyzing the success rate of receiving the infrared rays at the same coordinate position and the frequency of receiving the infrared rays at different coordinate positions and displaying the detection result comprises:
when the difference value of the infrared receiving frequencies corresponding to different coordinate positions is larger than a preset difference value and/or the infrared receiving success rate of the same coordinate position is smaller than a preset receiving success rate, the infrared receiving frequencies are all displayed as unqualified;
and when the difference of the infrared receiving frequencies corresponding to different coordinate positions is not greater than a preset difference value and the infrared receiving success rate of the same coordinate position is not greater than a preset receiving success rate, the infrared receiving frequency is displayed to be qualified.
7. The method for detecting the outer frame of the infrared touch screen as recited in claim 6, wherein the preset difference is 2% to 5%; the preset receiving success rate is 97-99%.
8. The method for detecting the outer frame of the infrared touch screen as recited in claim 2, wherein the step of analyzing the infrared receiving frequencies at different positions and determining whether the outer frame is qualified further comprises:
and the coordinate position of the touch point corresponds to the infrared receiving frequency and the infrared receiving success rate one by one.
9. An apparatus applied to the method for detecting the outer frame of the infrared touch screen according to any one of claims 1 to 8, comprising:
a touch unit for initiating touch;
an infrared light receiving unit for receiving an infrared light signal;
the computing unit is used for determining the infrared receiving frequency, the infrared receiving success rate and the coordinate position of the touch point according to the infrared signal;
the analysis unit is used for analyzing the infrared receiving success rate of the same coordinate position and the infrared receiving frequency of different coordinate positions to obtain a detection result;
and the display unit is used for displaying the detection result.
10. An electronic device, comprising: a processor, a memory, a display, a bus, and a computer program stored on the memory and executable on the processor;
the processor, the memory and the display finish mutual communication through the bus;
the processor, when executing the computer program, implements the method of any one of claims 1-8.
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