TWI864506B - Touch display module with abnormal warning - Google Patents

Abstract

A touch display module with abnormal early warning includes a display unit, a touch unit, a control unit connected to the display unit and the touch unit, and a communication unit. The control unit continuously executes a state detection program when the touch display module is powered on. The state detection program includes an execution time subroutine and a test subroutine. The execution time subroutine defines each time period. The inspection subroutine is executed at intervals. The inspection subroutine evaluates an abnormal risk of the display unit and the touch unit based on the past electrical data recorded by the control unit for the touch unit and the temporary change of the display of the display unit. When the abnormal risk meets a memory data definition condition, the control unit sends a maintenance inspection signal to a preset receiver through the communication unit.

Description

Touch display module with abnormal warning

The present invention relates to a touch display module, in particular to a touch display module capable of sending a maintenance inspection signal to a preset receiver.

Touch panels are currently used in a wide range of applications, and can be found in densely populated urban areas or remote areas with few people. Touch panels are mainly inspected and maintained on a regular basis, such as quarterly or annually, with maintenance performed at fixed intervals.

However, the current maintenance methods, such as those disclosed in CN 113360327A, CN 102759676A, CN 103207370A, CN 109036230A, and CN 109522170A, cannot know the status of the touch panel in advance, and can only wait for the equipment maintenance personnel to come to the site for maintenance or receive abnormality reports before knowing the status of the touch panel. In the case that the touch panel has already been abnormal before the maintenance date, the equipment maintenance personnel cannot deal with the abnormality in time. Furthermore, since the equipment maintenance personnel cannot know the cause of the abnormality of the touch panel in advance, the personnel may return to prepare replacement parts, delaying the maintenance time.

In addition, CN 100338562C and CN 100378631C disclose a technical solution that eliminates the need for equipment maintenance personnel to conduct on-site inspections on a regular basis in order to solve the aforementioned problems. Specifically, CN 100338562C and CN 100378631C utilize remote touch simulation to implement remote diagnosis, calibration, and other procedures. However, the inspection procedures of CN 100338562C and CN 100378631C discard the existing data generated by the touch panel after being touched, and instead simulate a new touch action, which results in a complicated inspection procedure. Furthermore, the evaluation process using additional simulations will prolong the time required for testing and affect the use of touch panels.

The main purpose of the present invention is to solve the problem that the conventional inspection method cannot detect the abnormality of the touch panel in advance.

Another object of the present invention is to use a maintenance method based on remote evaluation to avoid the problem of complicated maintenance steps caused by implementing the maintenance based on past records.

To achieve the above object, the present invention provides a touch display module with abnormal warning, the touch display module includes a display unit, a touch unit, and a control unit electrically connected to the display unit and the touch unit. Furthermore, the touch display module includes a communication unit. When the touch display module is powered on, the control unit continuously executes a status detection program. The status detection program includes an execution time subroutine and a test subroutine. The execution time subroutine defines that the test subroutine is executed at a certain interval. The test subroutine evaluates an abnormal risk of the display unit and the touch unit based on past electrical data recorded by the control unit for the touch unit and temporarily changes the display of the display unit. When the abnormal risk meets a memory data definition condition, the control unit sends a maintenance check signal to a preset receiver via the communication unit.

In one embodiment, the inspection subroutine includes the following procedures: A display inspection procedure, the control unit drives the display unit to display multiple monochrome screens in sequence, the colors of the monochrome screens are different, the control unit scans the monochrome screens respectively at a detection frequency, the control unit compares the multiple waveform data after scanning, and evaluates the abnormal risk based on the difference between the waveform data; and A touch inspection procedure, the control unit compares an original electrical setting data and electrical difference data before and after touch contained in the past electrical data, and evaluates the abnormal risk based on the difference between the original electrical setting data and the electrical difference data before and after touch.

In one embodiment, the touch inspection procedure is replaced by: the control unit drives the display unit to sequentially generate a plurality of same-color images with different brightnesses, the control unit provides a plurality of analog touch signals to the touch unit when the display unit sequentially displays the same-color images, and the control unit evaluates the abnormal risk based on a plurality of electrical difference data before and after the touch generated after the display unit sequentially displays the same-color images.

In one embodiment, the same-color images are grayscale images with different brightness.

In one embodiment, the original electrical configuration data and the electrical difference data before and after the touch are generated at the same frame rate.

In one embodiment, the display inspection program enables the control unit to scan the monochrome images respectively at a plurality of the inspection frequencies.

In one embodiment, the plurality of detection frequencies are selected from a plurality of different frequency bands.

In one embodiment, the frequency bands are 50kHz~133kHz, 133kHz~216kHz and 216kHz~299kHz.

In one embodiment, the detection frequency ranges from 50kHz to 133kHz.

In one embodiment, the control unit includes a memory and a computing chip informationally connected to the memory.

According to the aforementioned invention content, compared with the conventional technology, the present invention has the following characteristics: the control unit of the present invention has the function of early abnormal risk judgment by executing the state detection program. The touch display module of the present invention can send the inspection signal before the touch unit and the display unit are damaged and cannot operate, so that the receiver can discover the abnormality of the touch display module as early as possible. Therefore, it is believed that the touch display module proposed by the present invention has the characteristic of early warning. Furthermore, the state detection procedure executed by the present invention directly captures the existing past electrical data and performs evaluation by temporarily changing the display of the display unit. Compared with the conventional method, the present invention does not simulate a new one-time touch action in a way of sacrificing one's convenience to improve the problem of complicated inspection procedures.

The detailed description and technical contents of the present invention are as follows with reference to the accompanying drawings:

Please refer to FIG. 1 to FIG. 4 , the present invention provides a touch display module 20 with abnormal warning, the touch display module 20 includes a display unit 21, a touch unit 22, a communication unit 23 and a control unit 24. The display unit 21 is electrically connected to the control unit 24, and the display unit 21 has a plurality of pixels. The display unit 21 is controlled by the control unit 24 and can output a display screen 211 based on the pixels. More specifically, each of the pixels has its own color value, and the color values are respectively composed of the three primary colors of color light, that is, the three primary colors of red, blue and green. Through the brightness difference between red, blue and green, the color value displayed by each of the pixels is different, thereby forming the display screen 211. The touch unit 22 is electrically connected to the control unit 24. The touch unit 22 receives a touch and generates a signal change after receiving the touch. In the common capacitance type, the touch unit 22 has an array capacitor, and the touch object must be a conductor. When the touch object touches, the touch object couples with the array capacitor, changes the electric field of the touch unit 22, and causes the touch unit 22 to have a change in capacitance. Taking the resistive type as an example, the touch object is not limited to a conductor. When the touch object contacts the touch unit 22, the upper and lower electrodes of the touch unit 22 contact and conduct, changing the voltage of the touch unit 22, and causing the touch unit 22 to have a change in resistance. It should be understood that the above description is only to provide readers with a more specific understanding of the implementation of the touch unit 22, rather than to limit the type of the touch unit 22. In addition, the two electrical signals 221 generated by the touch unit 22 before and after the touch will be recorded by the control unit 24 as a past electrical data.

As mentioned above, the control unit 24 has a memory function, and the control unit 24 can be the main operator of the touch display module 20 or the driver controller for the touch unit 22 and the display unit 21 according to the implementation requirements. In one embodiment, the control unit 24 can be a modular circuit board integrating a driver chip. In another embodiment, the control unit 24 can further include a computing chip and a memory connected to the computing chip. The computing chip can operate an embedded system. The memory can be a non-volatile random access memory, such as EEPROM, flash memory, solid state storage, etc. The control unit 24 stores the past electrical data in the memory, and checks the past electrical data and the display unit 21 with the computing chip.

In addition, the control unit 24 stores a status detection program that can run related maintenance management operations in advance. The status detection program is written in computer language and is continuously executed when the touch display module 20 is turned on. The status detection program includes an execution time subroutine and a detection subroutine. The execution time subroutine defines that the control unit 24 automatically executes the detection subroutine at a certain interval. The time interval defined by the execution time subroutine can be calculated from the start of the touch display module 20, and the time interval section can be adjusted according to the usage status, such as weekly, monthly, quarterly, etc. It should be noted that, in order to prevent the state detection procedure from affecting the user's operation, the execution time subroutine automatically evaluates an off-peak usage time of the touch display module 20, and drives the control unit 24 to execute the inspection subroutine when the touch display module 20 enters the off-peak usage time. The off-peak usage time is interpreted as a time period when the touch display module 20 is operated less frequently in a day, that is, when the touch display module 20 receives multiple touch actions in a day with the longest time interval between them, it will be evaluated as the off-peak usage time. Further, the off-peak usage time is not limited to a time point or a time period set by the execution time subroutine.

As mentioned above, the inspection subroutine is automatically executed when the control unit 24 meets the interval time set by the execution time subroutine, without relying on other external devices to drive the control unit 24 to execute the inspection subroutine. The inspection subroutine is based on the past electrical data and the temporary change of the display of the display unit 21 to evaluate an abnormal risk of the display unit 21 and the control unit 24. More specifically, when the control unit 24 runs the inspection subroutine, the control unit 24 extracts the past electrical data recorded by itself and temporarily adjusts the pixels of the display unit 21 so that the display of the display screen 211 is not significantly changed when the touch display module 20 is powered on. Furthermore, the control unit 24 stores a memory data definition condition for determining the abnormal risk. The control unit 24 determines whether the touch display module 20 is damaged or needs maintenance based on the memory data definition condition. The memory data definition condition can be adjusted based on the factory settings, installation settings, usage frequency, installation location, etc. of the touch display module 20. For example, the memory data definition condition can be a comparison between the signal change amount between the two electrical signals 221 before and after the touch unit 22 receives a touch and a preset threshold. If the preset threshold is met, it will be considered normal. If it exceeds or does not reach the preset threshold, it will be considered to require maintenance. Furthermore, the above description of this article only uses the touch of the touch unit 22 as an example to illustrate the memory data definition condition. In practice, the memory data definition condition can also include the display of the display unit 21 as a judgment factor. At the same time, the memory data definition condition is divided by the aforementioned preset threshold value, and a logical judgment can be performed within a percentage range of the preset threshold value. Furthermore, the control unit 24 is informationally connected to the communication unit 23. The control unit 24 uses the communication unit 23 as a window for the touch display module 20 to communicate with the outside. The control unit 24 generates a maintenance check signal 241 when the abnormal risk meets a memory data definition condition, and sends the maintenance check signal 241 to a preset receiver 40 through the communication unit 23, so that the receiver 40 receives the maintenance check signal 241 with all electronic devices, such as a mobile phone or a computing host. Among them, the receiver 40 of the present invention refers to the unit that needs to report and notify when an abnormality occurs in the touch display module 20, such as a management unit or a maintenance unit to which the touch display module 20 belongs. In an embodiment, when the receiver 40 and the touch display module 20 are remotely located, the communication unit 23 is connected to the receiver 40 via an Internet 50.

Please refer to FIG. 2 , the present invention further provides a method 30 for evaluating the abnormal risk of the touch display module 20 based on the above. Assuming that initially, the control unit 24 has recorded and stored the past electrical data for the touch unit 22. In step 1 31, the control unit 24 continuously executes the status detection procedure when the touch display module 20 is turned on and running. Entering step 2 32, the control unit 24 executes the execution time subroutine, and based on the execution time subroutine, determines whether the touch display module 20 meets the time interval defined by the execution time subroutine, if so, enter step 3 33; otherwise, do not enter step 3 33 and continue to maintain the state detection program. In step 3 33, the inspection subroutine is executed when the time interval defined by the execution time subroutine is met, and the control unit 24 temporarily adjusts the pixels of the display screen 211 and extracts the past electrical data recorded by itself. Next, in step 4 34, the control unit 24 evaluates the abnormal risk with the display screen 211 after the short-term adjustment and the past electrical data. When the display screen 211 after the short-term adjustment and the past electrical data meet the memory data definition condition, the inspection signal 241 is sent, as shown by label 35. On the contrary, when the memory data definition condition is not met, the inspection signal 241 is not sent, as shown by label 36.

As can be seen from the above, the control unit 24 of the present invention has the function of early abnormal risk judgment by executing the status detection program. The touch display module 20 of the present invention can send the inspection signal 241 before the touch unit 22 and the display unit 21 are damaged and cannot operate, so that the receiver 40 can discover the abnormality of the touch display module 20 as early as possible. Therefore, it is believed that the touch display module 20 proposed by the present invention has the characteristic of early warning and solves the problem of frequent on-site inspections by equipment maintenance personnel in the past. Furthermore, the state detection procedure executed by the present invention directly captures the existing past electrical data and performs evaluation by temporarily changing the display of the display unit 21. Compared with the conventional method, the present invention does not simulate a new touch action in a way of sacrificing one thing for another, thereby improving the problem of complicated inspection procedures.

Continuing from the above, please refer to FIG. 1 to FIG. 6. In one embodiment, the inspection subroutine includes a display inspection program and a touch inspection program. When the display inspection program is executed, the control unit 24 drives the display unit 21 to display a plurality of monochrome images 212, 213, 214 in sequence. Each of the monochrome images 212, 213, 214 is the display unit 21 adjusting the pixels so that each of the pixels displays the same color value with the same brightness. In this way, the monochrome images 212, 213, 214 displayed by the display unit 21 have different colors. In one embodiment, the display unit 21 drives each of the pixels to display the three primary colors of light in sequence. When the pixels are driven to display one of the three primary colors of light, each of the pixels will be set not to display the other two of the three primary colors of light, thereby sequentially checking the display of the pixels under different three primary colors of light. The control unit 24 scans the monochrome images 212, 213, 214 at a detection frequency, and generates multiple waveform data 242, 243, 244 based on the scanned monochrome images 212, 213, 214, each of the waveform data 242, 243, 244 corresponds to one of the monochrome images 212, 213, 214. Taking FIG. 5 to FIG. 7 as an example, the waveform data 242, 243, 244 correspond to the red ones (as indicated by label 212) in the monochrome images 212, 213, 214, the green ones (as indicated by label 213) in the monochrome images 212, 213, 214, and the blue ones (as indicated by label 214) in the monochrome images 212, 213, 214. The control unit 24 evaluates the abnormal risk based on the difference of the waveform data 242, 243, 244. The difference described herein refers to the frequency corresponding to the waveform difference in the waveform data 242, 243, 244 exceeding the definition condition of the memory data.

As mentioned above, in one embodiment of the display inspection procedure, in order to increase the inspection efficiency of the control unit 24, the selection range of the detection frequency falls within 50kHz~133kHz. In another embodiment, in order to increase the accuracy of the abnormal risk assessment, the control unit 24 scans the monochrome images 212, 213, and 214 respectively with a plurality of the detection frequencies, and the plurality of the detection frequencies can be selected from the same frequency band of 50kHz~133kHz, or from a plurality of different frequency bands, such as 50kHz~133kHz, 133kHz~216kHz, and 216kHz~299kHz.

On the other hand, when the touch test program is run, the control unit 24 uses the past electrical data as an evaluation factor. Specifically, the past electrical data includes an original electrical setting data and electrical difference data before and after touch. The original electrical setting data is generated based on the electrical signal value of the touch unit 22 when it is not touched. The original electrical setting data can be the setting of the touch display module 20 when it leaves the factory, or it can be generated after the touch display module 20 is installed and tested based on the difference in the installation environment of the touch display module 20. The electrical property difference data before and after the touch is generated based on the comparison between the electrical property signal value generated when the touch unit 22 is touched and the electrical property signal value when it is not touched. Furthermore, when the control unit 24 evaluates the abnormality risk, the control unit 24 performs the evaluation based on the difference between the original electrical property setting data and the electrical property difference data before and after the touch. When the difference between the original electrical property setting data and the electrical property difference data before and after the touch meets the memory data definition condition, the control unit 24 evaluates that the touch unit 22 is abnormal.

As mentioned above, in one embodiment, when the touch display module 20 is controlled, the user touches the display screen 211. In order to prevent the display screen 211 from affecting the original electrical setting data and the electrical difference data before and after the touch, the touch inspection procedure generates the original electrical setting data and the electrical difference data before and after the touch at the same frame rate. In another embodiment, the touch test procedure can also be performed based on different display screens 211. The touch test procedure is replaced by: the control unit 24 drives the display unit 21 to sequentially generate a plurality of same-color screens. The same-color screens are the screens in which the display unit 21 adjusts the pixels so that each of the pixels displays the same color value with different brightness. In this way, the same-color screens displayed by the display unit 21 are displayed with different color levels of the same color system and present visual perceptions with different brightness. In one embodiment, the same-color screens can also be grayscale screens with different brightness. Furthermore, when the control unit 24 sequentially displays the same-color images, it provides a plurality of analog touch signals to the touch unit 22. The analog touch signals are not generated by the actual operation of the operator, but are generated by the control unit 24 simulating the touch unit 22 receiving the touch. After the touch unit 22 receives the analog touch signals, the change in the electrical signal (such as the label 221) is generated accordingly. The control unit 24 evaluates the abnormal risk based on the plurality of electrical difference data before and after the touch generated after the display unit 21 sequentially displays the same-color images.

The above is merely a preferred embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of the patent application of the present invention should still fall within the scope of the patent of the present invention.

20: Touch display module 21: Display unit 211: Display screen 212: Monochrome screen 213: Monochrome screen 214: Monochrome screen 22: Touch unit 221: Electrical signal 23: Communication unit 24: Control unit 241: Inspection signal 242: Waveform data 243: Waveform data 244: Waveform data 30: Method 31: Step 1 32: Step 2 33: Step 3 34: Step 4 35: Step 36: Step 40: Receiver 50: Internet

Figure 1, schematic diagram of the implementation unit of the present invention (I). Figure 2, schematic diagram of the implementation process of the present invention. Figure 3, schematic diagram of the implementation framework of the present invention. Figure 4, schematic diagram of the implementation unit of the present invention (II). Figure 5, schematic diagram of the waveform data generated based on the monochrome screen of the present invention (I). Figure 6, schematic diagram of the waveform data generated based on the monochrome screen of the present invention (II). Figure 7, schematic diagram of the waveform data generated based on the monochrome screen of the present invention (III).

20: Touch display module

21: Display unit

22: Touch unit

23: Communication unit

24: Control unit

Claims (8)

A touch display module with abnormal warning, the touch display module includes a display unit, a touch unit, and a control unit electrically connected to the display unit and the touch unit. The touch display module is characterized in that: the touch display module includes a communication unit, the control unit continuously executes a state detection program when the touch display module is powered on. The test program includes an execution time subroutine and a test subroutine. The execution time subroutine defines that the test subroutine is executed at a certain interval. The test subroutine evaluates an abnormal risk of the display unit and the touch unit. The test subroutine includes a display test program and a touch test program. The display test program defines that the control unit drives the display unit to display a plurality of single The control unit scans the monochrome images at a detection frequency, compares the waveform data after scanning, and evaluates the abnormal risk based on the difference of the waveform data. The touch test procedure defines that the control unit drives the display unit to sequentially generate a plurality of same-color images with different brightness. The control unit generates a plurality of same-color images with different brightness. When the same-color images are displayed sequentially, multiple analog touch signals are provided to the touch unit. The control unit evaluates the abnormal risk based on multiple electrical difference data before and after the touch generated after the display unit displays the same-color images sequentially. When the abnormal risk meets a memory data definition condition, the control unit sends a maintenance inspection signal to a preset receiver through the communication unit. A touch display module with abnormal warning as described in claim 1, wherein the same-color images are grayscale images of different brightness. A touch display module with abnormal warning as described in any one of claim items 1 to 2, wherein the original electrical setting data and the electrical difference data before and after the touch are generated at the same frame rate. A touch display module with abnormal warning as described in any one of claim items 1 to 2, wherein the display inspection procedure causes the control unit to scan the monochrome screens respectively at a plurality of the inspection frequencies. A touch display module with abnormal warning as described in claim 4, wherein the plurality of detection frequencies are selected from a plurality of different frequency bands. A touch display module with abnormal warning as described in claim 5, wherein the frequency bands are 50kHz~133kHz, 133kHz~216kHz and 216kHz~299kHz. A touch display module with abnormal warning as described in any one of claim items 1 to 2, wherein the detection frequency ranges from 50kHz to 133kHz. A touch display module with abnormal warning as described in any one of claim items 1 to 2, wherein the control unit includes a memory and a computing chip connected to the memory information.

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