CN118248057A - Display screen testing method and testing equipment - Google Patents
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Abstract
The application provides a testing method and testing equipment of a display screen, wherein the testing equipment comprises the following steps: the system comprises an image acquisition module, a temperature detection module, a screen display module, an optical fiber communication module and a motor control module; the size information of the circuit board is determined through the camera, and a control signal is generated by combining the test coordinates issued by the upper computer, so that the coding motor is controlled to drive the test probes to move to corresponding test points on the circuit board, the circuit board of various display screens can be quickly adapted, the self-defined test requirements are met, and the test preparation time and cost are saved; on the other hand, the temperature display processing is carried out on the test image based on the temperature data, so that the temperature of the circuit board of the user can be obviously prompted in time through the upper computer, the timely processing of abnormal heating is facilitated, and the safety of the display screen test is improved.
Description
Technical Field
The application relates to the technical field of detection, in particular to a testing method and testing equipment for a display screen.
Background
The existing display screen testing method mainly comprises the steps of manually welding and leading wires by a testing engineer according to a schematic diagram and a test case, constructing a testing bench to perform probe testing, and leading out and integrating video signals and fault detection signals onto a plug-in connector in advance.
However, manual soldering is time consuming and is prone to damage to the circuit board, and probe testing requires that the hole plate of acrylic be customized in advance to the test point of the circuit board to secure the probes. Therefore, the existing display screen testing method needs to be customized and developed for the circuit board, consumes a great deal of preparation time and cost, and cannot be quickly adapted when the circuit board is changed. In addition, because the wiring of the test process is complicated, the software and hardware can not be highly adapted, and the reasons such as limit test are often needed, the abnormal heating of the circuit board is easy to cause, the danger is generated, and the damage of the test equipment and the circuit board is caused.
Disclosure of Invention
In view of the above, the application aims to provide a testing method and testing equipment for a display screen, which are characterized in that the size information of a circuit board is determined through a camera, and a control signal is generated by combining test coordinates issued by an upper computer, so that a coding motor is controlled to drive a test probe to move to a corresponding test point on the circuit board, thus the testing method and testing equipment can be quickly adapted to the circuit boards of various display screens, the self-defined testing requirements are met, and the testing preparation time and cost are saved; on the other hand, the temperature display processing is carried out on the test image based on the temperature data, so that the temperature of the circuit board of the user can be obviously prompted in time through the upper computer, the timely processing of abnormal heating is facilitated, and the safety of the display screen test is improved.
The embodiment of the application provides a testing method of a display screen, which is applied to testing equipment of the display screen; the testing equipment is respectively connected with the upper computer, the infrared sensor, the camera and the coding motor; the coded motor is provided with a test probe; the test apparatus includes: the system comprises an image acquisition module, a temperature detection module, a screen display module, an optical fiber communication module and a motor control module; the test method comprises the following steps:
the temperature detection module reads the temperature data of the circuit board of the display screen to be detected, which is detected by the infrared sensor, and sends the temperature data to the screen display module;
the image acquisition module reads the test image of the circuit board acquired by the camera, determines the size information of the circuit board according to the test image, and sends the size information to the screen display module;
The screen display module performs temperature display processing on the test image according to the temperature data, and sends the processed test image and the processed size information to the optical fiber communication module;
the optical fiber communication module sends the processed test image to the upper computer, sends the size information to the motor control module, receives the selected test coordinates in the test image sent by the upper computer, and forwards the test coordinates to the motor control module;
And the motor control module generates a control signal according to the size information and the test coordinates and sends the control signal to the coding motor so as to control the coding motor to drive the test probe to move to a test point on the circuit board indicated by the test coordinates through the control signal.
The embodiment of the application also provides test equipment of the display screen, which is respectively connected with the upper computer, the infrared sensor, the camera and the coding motor; the coded motor is provided with a test probe; the test apparatus includes: the system comprises an image acquisition module, a temperature detection module, a screen display module, an optical fiber communication module and a motor control module;
The temperature detection module is used for reading the temperature data of the circuit board of the display screen to be detected, which is detected by the infrared sensor, and sending the temperature data to the screen display module;
the image acquisition module is used for reading the test image of the circuit board acquired by the camera, determining the size information of the circuit board according to the test image and sending the size information to the screen display module;
The screen display module is used for performing temperature display processing on the test image according to the temperature data and sending the processed test image and the size information to the optical fiber communication module;
The optical fiber communication module is used for sending the processed test image to the upper computer, sending the size information to the motor control module, receiving the selected test coordinates in the test image sent by the upper computer, and forwarding the test coordinates to the motor control module;
And the motor control module is used for generating a control signal according to the size information and the test coordinates and sending the control signal to the coding motor so as to control the coding motor to drive the test probe to move to a test point on the circuit board indicated by the test coordinates through the control signal.
The embodiment of the application also provides electronic equipment, which comprises: the system comprises a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, the processor and the memory are communicated through the bus when the electronic device runs, and the machine-readable instructions are executed by the processor to execute the steps of a method for testing a display screen.
The embodiment of the application also provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and the computer program is executed by a processor to execute the steps of a method for testing a display screen.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows one of schematic structural diagrams of a display screen testing apparatus according to an embodiment of the present application;
FIG. 2 is a flowchart of a method for testing a display screen according to an embodiment of the present application;
FIG. 3 is a schematic diagram showing a second embodiment of a display screen testing apparatus according to the present application;
Fig. 4 shows a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. Based on the embodiments of the present application, every other embodiment obtained by a person skilled in the art without making any inventive effort falls within the scope of protection of the present application.
The research shows that the existing display screen testing method mainly comprises the steps of manually welding and leading wires by a testing engineer according to a schematic diagram and a test case, constructing a testing bench to perform probe testing, and leading out and integrating video signals and fault detection signals onto the plug-in connector in advance.
However, manual soldering is time consuming and is prone to damage to the circuit board, and probe testing requires that the hole plate of acrylic be customized in advance to the test point of the circuit board to secure the probes. Therefore, the existing display screen testing method needs to be customized and developed for the circuit board, consumes a great deal of preparation time and cost, and cannot be quickly adapted when the circuit board is changed. In addition, because the wiring of the test process is complicated, the software and hardware can not be highly adapted, and the reasons such as limit test are often needed, the abnormal heating of the circuit board is easy to cause, the danger is generated, and the damage of the test equipment and the circuit board is caused.
Based on the above, the embodiment of the application provides a testing method of a display screen, which is used for rapidly adapting to circuit boards of various display screens, meeting the self-defined testing requirement and saving the testing preparation time and cost; and the temperature of the circuit board of the user is obviously prompted in time, so that the abnormal heating is timely handled, and the safety of the display screen test is improved.
The testing method provided by the embodiment of the application is applied to the testing equipment of the display screen; referring to fig. 1, fig. 1 is a schematic structural diagram of a display screen testing apparatus according to an embodiment of the application. As shown in fig. 1, the test device 110 is connected with the upper computer 120, the camera 130, the infrared sensor 140 and the encoding motor 150, respectively; the coding motor is provided with a test probe, and the coding motor can drive the test probe to move together when moving, so that the test probe can be contacted with a test point on the display screen. One side of the display screen in the embodiment of the application is a liquid crystal TFT module for displaying images, and the other side is a circuit board integrated with various components.
The test equipment 110 can be developed and designed based on an FPGA chip (Field Programmable GATE ARRAY), and specifically comprises: an image acquisition module 111, a temperature detection module 112, a screen display module 113, an optical fiber communication module 114 and a motor control module 115.
Referring to fig. 2, fig. 2 is a flowchart of a method for testing a display screen according to an embodiment of the application. As shown in fig. 2, the test method provided by the embodiment of the application includes:
s301, the temperature detection module reads the temperature data of the circuit board of the display screen to be detected, which is detected by the infrared sensor, and sends the temperature data to the screen display module.
In this step, the temperature detection module may communicate with the infrared sensor module through the SPI, and a timer is provided in the temperature detection module, and a clock period of the timer, for example, 10 ms is set. When the timer is triggered, the temperature detection module of the FPGA can start SPI communication, send a reading command to the infrared sensor, receive temperature data returned by the infrared sensor, and transmit the infrared sensor to the on-screen display (OSD) module in real time. Here, the infrared sensor is used to detect the temperature of the circuit board of the display screen to be measured in real time.
S302, the image acquisition module reads the test image of the circuit board acquired by the camera, determines the size information of the circuit board according to the test image, and sends the size information to the screen display module.
In the step, the image acquisition module of the FPGA can realize the initialization configuration of the camera module through the IIC, and the size calculation of a circuit board and the transmission of an acquired image are required to be realized in the module.
Wherein the size information includes: the image range of the circuit board in the test image and the physical dimensions of the circuit board in the real world. In a possible implementation manner, the determining, by the image acquisition module in step S302, the size information of the circuit board according to the test image may include:
S3021, detecting the edge of the circuit board in the test image by using an edge detection algorithm to obtain a binarized edge detection image.
S3022, traversing pixel values of all pixel points in the binarized edge detection image, and determining an image range of the circuit board in the test image.
S3023, determining the physical size of the circuit board in the real world according to the focal length of the camera and the image range of the circuit board in the test image.
In the embodiment of the application, when the camera acquires images, the position of the camera is fixed, and the installation position of the display screen to be detected is also fixed. The test image of the circuit board acquired by the camera necessarily contains a background area of the non-circuit board, so that in order to accurately determine the size information of the circuit board, the edge of the circuit board in the image needs to be detected first.
For steps S3021 and S3022, the edge detection algorithm outputs a binarized edge detection image, wherein the pixel value of the edge pixel point is 255, and the pixel value of the non-edge pixel point is 0. Therefore, by traversing the pixel values of the pixel points, the edge of the circuit board in the test image can be determined, and the image range occupied by the circuit board in the test image, namely the size of the circuit board in the image, can be further determined.
On the other hand, although the mounting position of the display screen to be tested is also fixed, the size of the circuit board is not completely the same due to the different types of the display screen. The image acquisition module can integrate the image range occupied by the circuit board in the test image, namely the size of the circuit board in the image and the focal length of the camera to determine the physical size of the circuit board in the real world.
And S303, the screen display module performs temperature display processing on the test image according to the temperature data, and sends the processed test image and the processed size information to the optical fiber communication module.
In the step, the screen display module can carry out superposition display processing on the test image according to the temperature data, so that the processed image can clearly display the temperature condition of the circuit board in real time. The screen display module can also carry out format verification on the received test image, and if the verification format is incorrect, the test image is read again; and if the verification format is correct, performing temperature display superposition processing.
In a possible implementation manner, the temperature display processing of the test image by the screen display module according to the temperature data in step S303 may include:
And the screen display module displays the temperature data in a superposition manner outside the image range of the circuit board in the test image.
For example, the screen display module may determine an image range where the circuit board is located from the received size information, and then select a position outside the image range for overlapping and displaying the temperature data. The screen display module may also directly superimpose and display the temperature data at preset coordinates, such as the upper left corner (100 ) of the test image.
In another possible implementation manner, the screen display module in step S303 performs a temperature display process on the test image according to the temperature data, and may further include:
The screen display module judges whether the temperature data exceeds a preset temperature threshold value; and if so, the screen display module displays a semitransparent mask which is different from the color of the test image on the test image in a superimposed manner.
Thus, the temperature abnormality of the circuit board of the test engineer can be more intuitively prompted. Further, when the duration of the stacking exceeds the preset duration (for example, 2 minutes), if the test is not stopped, the screen display module may also directly disconnect the power supply of the circuit board.
In an embodiment, the translucent mask includes a first mask and a second mask; the first mask and the second mask have different color depths; illustratively, the translucent mask includes two translucent red masks, one of which is a bit darker red and the other of which is a bit lighter red; the screen display module alternately superimposes and displays the first mask and the second mask on the test image, so that a flickering display effect can be achieved, and the temperature of the circuit board of the test engineer is more remarkably prompted to be abnormal.
S304, the optical fiber communication module sends the processed test image to the upper computer, sends the size information to the motor control module, receives the selected test coordinates in the test image sent by the upper computer, and forwards the test coordinates to the motor control module.
The fiber communication module needs to use the design of the GTP IP core of the FPGA; specifically, when the data in the FIFO of the optical fiber communication module reaches a certain amount (for example, 1 line of video data), the data is taken out from the FIFO and sent to the external optical module 1 by using GTP IP, the optical module 1 converts the electrical signal into the optical signal and transmits the optical signal to the optical module 2 through the optical fiber, the optical module 2 converts the optical signal into the electrical signal and inputs the electrical signal to the GTP of the FPGA for receiving, after the data received by the GTP needs to be aligned with 32 bits of data, the data of the video image part is analyzed, and then the test image data is stored in the FIFO. And then the test image is transmitted to the DDR cache, and further transmitted to the PC computer end of the upper computer for display.
Meanwhile, the temperature display and superposition processed test image corresponding to the circuit board is displayed in real time in the interaction interface of the upper computer. The test engineer can select a test point in the interactive interface of the upper computer, and the upper computer further generates a test coordinate selected in the test image and sends the test coordinate to the optical fiber communication module; and the optical fiber communication module sends the test coordinates and the size information to the motor control module.
And S305, the motor control module generates a control signal according to the size information and the test coordinates and sends the control signal to the coding motor so as to control the coding motor to drive the test probe to move to a test point on the circuit board indicated by the test coordinates through the control signal.
In the step, a motor control module firstly needs to convert the test coordinates into the coordinates in the real physical world according to the size information, and then generates a control signal for controlling the motion of the coding motor, so that the motion of the coding motor is controlled by the control signal; therefore, under the drive of the coding motor, the test probe can move to the corresponding test point on the circuit board indicated by the test coordinate selected by the test engineer, so that the purposes of quickly adapting to the circuit boards of various display screens, meeting the self-defined test requirement, needing no customized hole plate and saving test preparation time and cost are achieved.
Here, the motor control module can also check the test coordinates, and if the test coordinates exceed the range of the circuit board in the test image, an error prompt is returned to the upper computer; and if the test coordinates do not exceed the range of the circuit board in the test image, generating corresponding control signals.
In one possible implementation, the motor control module generating a control signal according to the size information and the test coordinates may include:
determining a size mapping relation between the test image and the real world according to an image range of the circuit board in the test image and the physical size of the circuit board in the real world; determining a target position of the coding motor according to the size mapping relation and the test coordinates; determining the motor shaft speed and the motor shaft position of the coding motor according to the current position and the target position of the coding motor; and generating the control signal according to the motor shaft speed and the motor shaft position.
In practice, a Cartesian coordinate system may be used to convert the X-coordinate to the motor shaft position and the Y-coordinate to the motor shaft speed. And then according to the resolution and the working mode in the encoder manual, converting the motor shaft position and the motor shaft speed into pulse signals of the encoder, and further generating control signals suitable for encoding the motor according to the pulse signals of the encoder.
Further, referring to fig. 3, fig. 3 is a second schematic structural diagram of a display screen testing apparatus according to an embodiment of the present application. As shown in fig. 3, the test apparatus 110 further includes an image output module 116; the test equipment 110 is also connected with the display screen 160 to be tested; the image output module can provide video image input for the display screen to be tested through interfaces such as HDMI, so that the pixel point state of the TFT module of the display screen to be tested is tested.
The test method further comprises:
The image output module generates an image according to the resolution of the display screen to be tested; or the image output module reads the image input by the external memory card and adjusts the image to the resolution of the display screen to be tested.
Here, the present application finds through research that the existing display screen test method cannot meet the full screen display of the display screens with different resolutions, and requires coordination of extra HDMI output devices. Therefore, the image output module can have two working modes, one of which can realize the drawing of images through the FPGA, mainly comprises a solid-color picture and a gradual-change picture, and can generate images according to the resolution of the display screen to be tested; and secondly, reading an external memory card, wherein various pictures or videos for testing the TFT performance can be stored in the memory card, the image is read into the DDR by an image output module, and the image is adjusted to be the same resolution as the display screen to be tested by an internal video parameter configuration module. Therefore, the image output module provides video images for the display screen to be tested, the display screens with different resolutions can be adapted, and the testing efficiency is improved.
And then, the image output module sends the image to the display screen to be detected, so that the state of each pixel point of the display screen to be detected, such as whether the display screen has a dead point or not, is detected by controlling the display of the display screen to be detected to display the adjusted image.
Further, similar to the control signal generated by the motor control module to control the encoding motor to drive the test probe to test the test point on the circuit board, the motor control module can also complete the touch function test on the display screen to be tested. For example, the test engineer can select a touch point in the interactive interface of the upper computer, and the upper computer further generates a touch coordinate selected in the test image and sends the touch coordinate to the optical fiber communication module; and the optical fiber communication module sends the touch coordinates to the motor control module and generates corresponding control signals to control the testing probe to perform touch function test on the corresponding position on the display screen to be tested.
According to the testing method for the display screen, provided by the embodiment of the application, the size information of the circuit board is determined through the camera, and the control signal is generated by combining the testing coordinates issued by the upper computer, so that the coding motor is controlled to drive the testing probe to move to the corresponding testing point on the circuit board, the circuit boards of various display screens can be quickly adapted, the self-defined testing requirements are met, and the testing preparation time and cost are saved; on the other hand, the temperature display processing is carried out on the test image based on the temperature data, so that the temperature of the circuit board of the user can be obviously prompted in time through the upper computer, the timely processing of abnormal heating is facilitated, and the safety of the display screen test is improved; in addition, images adapting to different display screens to be tested can be generated through the resolution parameters so as to fully adapt to various display screens.
Based on the same inventive concept, the embodiment of the application also provides a testing device of the display screen, wherein the testing device is respectively connected with the upper computer, the infrared sensor, the camera and the coding motor; the coded motor is provided with a test probe; the test apparatus includes: the system comprises an image acquisition module, a temperature detection module, a screen display module, an optical fiber communication module and a motor control module;
The temperature detection module is used for reading the temperature data of the circuit board of the display screen to be detected, which is detected by the infrared sensor, and sending the temperature data to the screen display module;
the image acquisition module is used for reading the test image of the circuit board acquired by the camera, determining the size information of the circuit board according to the test image and sending the size information to the screen display module;
The screen display module is used for performing temperature display processing on the test image according to the temperature data and sending the processed test image and the size information to the optical fiber communication module;
The optical fiber communication module is used for sending the processed test image to the upper computer, sending the size information to the motor control module, receiving the selected test coordinates in the test image sent by the upper computer, and forwarding the test coordinates to the motor control module;
And the motor control module is used for generating a control signal according to the size information and the test coordinates and sending the control signal to the coding motor so as to control the coding motor to drive the test probe to move to a test point on the circuit board indicated by the test coordinates through the control signal.
Further, the test equipment further comprises an image output module; the test equipment is also connected with the display screen to be tested;
The image output module is used for generating an image according to the resolution of the display screen to be tested; or the image output module is used for reading the image input by the external memory card and adjusting the image to the resolution of the display screen to be tested;
The image output module is further used for sending the image to the display screen to be tested, so that the state of each pixel point of the display screen to be tested is detected by controlling the display of the display screen to be tested to display the adjusted image.
Further, when the screen display module is used for performing temperature display processing on the test image according to the temperature data, the screen display module is used for:
And the screen display module displays the temperature data in a superposition manner outside the image range of the circuit board in the test image.
Further, when the screen display module is used for performing temperature display processing on the test image according to the temperature data, the screen display module is used for:
Judging whether the temperature data exceeds a preset temperature threshold value or not;
And if so, displaying a semitransparent mask which is different from the color of the test image in a superimposed manner on the test image.
Further, the translucent mask includes a first mask and a second mask; the first mask and the second mask have different color depths; the screen display module is used for displaying a semitransparent mask which is different from the color of the test image in a superimposed mode on the test image, and is used for:
And the screen display module alternately superimposes and displays the first mask and the second mask on the test image.
Further, the size information includes: the image range of the circuit board in the test image and the physical size of the circuit board in the real world; the image acquisition module is used for determining the size information of the circuit board according to the test image, and the image acquisition module is used for:
detecting the edge of the circuit board in the test image by using an edge detection algorithm to obtain a binarized edge detection image;
traversing pixel values of all pixel points in the binarized edge detection image, and determining an image range of the circuit board in the test image;
and determining the physical size of the circuit board in the real world according to the focal length of the camera and the image range of the circuit board in the test image.
Further, when the motor control module is used for generating a control signal according to the size information and the test coordinates, the motor control module is used for:
Determining a size mapping relation between the test image and the real world according to an image range of the circuit board in the test image and the physical size of the circuit board in the real world;
Determining a target position of the coding motor according to the size mapping relation and the test coordinates;
determining the motor shaft speed and the motor shaft position of the coding motor according to the current position and the target position of the coding motor;
and generating the control signal according to the motor shaft speed and the motor shaft position.
The implementation of the test apparatus may refer to the implementation of the foregoing test method, and the repetition is not repeated.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the application. As shown in fig. 4, the electronic device 400 includes a processor 410, a memory 420, and a bus 430.
The memory 420 stores machine-readable instructions executable by the processor 410, when the electronic device 400 is running, the processor 410 communicates with the memory 420 through the bus 430, and when the machine-readable instructions are executed by the processor 410, the steps of a method for testing a display screen in the method embodiment shown in fig. 2 can be executed, and a specific implementation manner may refer to the method embodiment and will not be described herein.
The embodiment of the present application further provides a computer readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the step of a method for testing a display screen in the method embodiment shown in fig. 2 may be executed, and a specific implementation manner may refer to the method embodiment and will not be described herein.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer readable storage medium executable by a processor. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Finally, it should be noted that: the above examples are only specific embodiments of the present application, and are not intended to limit the scope of the present application, but it should be understood by those skilled in the art that the present application is not limited thereto, and that the present application is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (10)
1. The testing method of the display screen is characterized in that the testing method is applied to testing equipment of the display screen; the testing equipment is respectively connected with the upper computer, the infrared sensor, the camera and the coding motor; the coded motor is provided with a test probe; the test apparatus includes: the system comprises an image acquisition module, a temperature detection module, a screen display module, an optical fiber communication module and a motor control module; the test method comprises the following steps:
the temperature detection module reads the temperature data of the circuit board of the display screen to be detected, which is detected by the infrared sensor, and sends the temperature data to the screen display module;
the image acquisition module reads the test image of the circuit board acquired by the camera, determines the size information of the circuit board according to the test image, and sends the size information to the screen display module;
The screen display module performs temperature display processing on the test image according to the temperature data, and sends the processed test image and the processed size information to the optical fiber communication module;
the optical fiber communication module sends the processed test image to the upper computer, sends the size information to the motor control module, receives the selected test coordinates in the test image sent by the upper computer, and forwards the test coordinates to the motor control module;
And the motor control module generates a control signal according to the size information and the test coordinates and sends the control signal to the coding motor so as to control the coding motor to drive the test probe to move to a test point on the circuit board indicated by the test coordinates through the control signal.
2. The test method of claim 1, wherein the test apparatus further comprises an image output module; the test equipment is also connected with the display screen to be tested; the test method further comprises the following steps:
the image output module generates an image according to the resolution of the display screen to be tested; or the image output module reads an image input by an external memory card and adjusts the image to the resolution of the display screen to be tested;
and the image output module sends the image to the display screen to be detected so as to detect the state of each pixel point of the display screen to be detected by controlling the display of the display screen to be detected after the display of the display screen to be detected is adjusted.
3. The test method according to claim 1, wherein the screen display module performs a temperature display process on the test image according to the temperature data, comprising:
And the screen display module displays the temperature data in a superposition manner outside the image range of the circuit board in the test image.
4. A test method according to claim 1 or 3, wherein the screen display module performs a temperature display process on the test image according to the temperature data, comprising:
The screen display module judges whether the temperature data exceeds a preset temperature threshold value;
And if so, the screen display module displays a semitransparent mask which is different from the color of the test image on the test image in a superimposed manner.
5. The method of testing of claim 4, wherein the semi-transparent mask comprises a first mask and a second mask; the first mask and the second mask have different color depths; the screen display module displays a translucent mask different in color from the test image superimposed on the test image, comprising:
And the screen display module alternately superimposes and displays the first mask and the second mask on the test image.
6. The method of testing according to claim 1, wherein the size information comprises: the image range of the circuit board in the test image and the physical size of the circuit board in the real world; the image acquisition module determines the size information of the circuit board according to the test image, and comprises the following steps:
detecting the edge of the circuit board in the test image by using an edge detection algorithm to obtain a binarized edge detection image;
traversing pixel values of all pixel points in the binarized edge detection image, and determining an image range of the circuit board in the test image;
and determining the physical size of the circuit board in the real world according to the focal length of the camera and the image range of the circuit board in the test image.
7. The test method of claim 6, wherein the motor control module generating a control signal based on the dimensional information and the test coordinates, comprising:
Determining a size mapping relation between the test image and the real world according to an image range of the circuit board in the test image and the physical size of the circuit board in the real world;
Determining a target position of the coding motor according to the size mapping relation and the test coordinates;
determining the motor shaft speed and the motor shaft position of the coding motor according to the current position and the target position of the coding motor;
and generating the control signal according to the motor shaft speed and the motor shaft position.
8. The testing equipment of the display screen is characterized by being connected with an upper computer, an infrared sensor, a camera and an encoding motor respectively; the coded motor is provided with a test probe; the test apparatus includes: the system comprises an image acquisition module, a temperature detection module, a screen display module, an optical fiber communication module and a motor control module;
The temperature detection module is used for reading the temperature data of the circuit board of the display screen to be detected, which is detected by the infrared sensor, and sending the temperature data to the screen display module;
the image acquisition module is used for reading the test image of the circuit board acquired by the camera, determining the size information of the circuit board according to the test image and sending the size information to the screen display module;
The screen display module is used for performing temperature display processing on the test image according to the temperature data and sending the processed test image and the size information to the optical fiber communication module;
The optical fiber communication module is used for sending the processed test image to the upper computer, sending the size information to the motor control module, receiving the selected test coordinates in the test image sent by the upper computer, and forwarding the test coordinates to the motor control module;
And the motor control module is used for generating a control signal according to the size information and the test coordinates and sending the control signal to the coding motor so as to control the coding motor to drive the test probe to move to a test point on the circuit board indicated by the test coordinates through the control signal.
9. An electronic device, comprising: a processor, a memory and a bus, said memory storing machine readable instructions executable by said processor, said processor and said memory communicating via said bus when the electronic device is running, said machine readable instructions when executed by said processor performing the steps of a method of testing a display screen according to any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, performs the steps of a method of testing a display screen according to any one of claims 1 to 7.
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| CN202410355019.1A CN118248057A (en) | 2024-03-27 | 2024-03-27 | Display screen testing method and testing equipment |
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| CN202410355019.1A CN118248057A (en) | 2024-03-27 | 2024-03-27 | Display screen testing method and testing equipment |
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| CN202410355019.1A Pending CN118248057A (en) | 2024-03-27 | 2024-03-27 | Display screen testing method and testing equipment |
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