LED dot matrix screen fault testing device

Abstract

The utility model discloses an LED dot matrix screen fault testing device, which comprises a control module, a display module, a function key module and a power supply module, and comprehensively detects the performance of an LED dot matrix screen in an automatic mode, including key indexes such as display color, working current and the like. The working principle of the LED dot matrix screen testing device is mainly based on a preset testing program, a UART communication protocol, real-time data reading and displaying and key input processing. The testing device is connected with the LED screen through a UART communication protocol, instructions are sent through the control module to control the screen to display various colors and states, so that performance detection is carried out, meanwhile, the display module of the testing device can read and display the working current of the LED screen and the quiescent current of the microampere level in real time, a visual testing result is provided for a user, and the testing efficiency is improved. The multifunctional detection of the LED dot matrix screen is realized, a visual interface design and a preset test program are adopted, the operation process is simplified, and the detection cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of LED dot matrix screen testing, and specifically relates to an LED dot matrix screen fault testing device. Background Art

[0002] With the rapid development of LED display technology, LED dot matrix screens have been widely used in various fields due to their high brightness, low power consumption, long lifespan and other characteristics. As an important part of modern display technology, the quality and performance testing of LED dot matrix screens is particularly crucial. Most of the current testing equipment on the market has deficiencies such as limited functions and cumbersome operations, and cannot meet the testing requirements of the industry;

[0003] Existing LED dot matrix screen testing technologies usually require professional equipment and software for testing. The operation is relatively complex and requires professional knowledge and experience. By using testing equipment equipped with high-precision cameras and optical sensors to capture the display effects of LED dot matrix screens, the detection cost is too high, and the testing operation is relatively complex, and the usage method is not convenient enough. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the existing technology, the utility model provides an LED dot matrix screen fault testing device, which solves the above-mentioned problems.

[0006] (2) Technical Solutions

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: An LED dot matrix screen fault testing device includes a control module, a display module, a function key module and a power supply module;

[0008] Control Module: The control module conducts data interaction with the LED screen through the UART communication protocol. The UART protocol is a widely used serial data communication protocol, which has the characteristics of simplicity and reliability and is suitable for the application scenario of the present invention. The control module has a preset test program built-in, which can control the LED screen to display various colors and states to detect the performance of the screen. The test program can be customized according to needs to meet the testing requirements of different models and specifications of LED screens. Through the preset test program, the control module automatically executes the test process without manual intervention, improving the efficiency and accuracy of the test;

[0009] Display Module: The display module is equipped with an LED display screen for real-time display of the working current of the LED screen and the static current at the microampere level. The display module is connected to the control module, can read the test data obtained by the control module in real time, and display it through the LED display screen;

[0010] Function Button Module: The function button module is provided with three buttons, corresponding to the functions of automatic detection, manual detection, and sleep detection respectively. The button module is connected to the control module. When the user presses different buttons, corresponding instructions will be sent to the control module, and the control module will execute the corresponding test mode according to the instructions.

[0011] Power Supply Module: The power supply module provides a stable.V working voltage for the test device to ensure the stable operation of the test device. The power supply module independently powers the LED screen, enabling the test screen to be tested without relying on an external power supply, improving the flexibility of the test.

[0012] (III) Beneficial Effects

[0013] The present utility model provides an LED dot matrix screen fault test device, which has the following beneficial effects: comprehensively detect the performance of the LED dot matrix screen in an automated manner, including key indicators such as display color and working current. The working principle of the LED dot matrix screen test device is mainly based on a preset test program, UART communication protocol, real-time data reading and display, and button input processing. The test device establishes a connection with the LED screen through the UART communication protocol, and sends instructions through the control module to control the screen to display various colors and states, thereby performing performance detection. At the same time, the display module of the test device can read and display the working current and static current at the microampere level of the LED screen in real time, providing intuitive test results for users, realizing multi-functional detection of the LED dot matrix screen, and adopting an intuitive interface design and a preset test program, simplifying the operation process and reducing the detection cost. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of the present utility model;

[0015] Figure 2 is the structural schematic diagram of the display module of the present utility model;

[0016] Figure 3 is the usage flow chart of the present utility model;

[0017] Figure 4 is the single-chip microcomputer circuit diagram of the control module of the present utility model.

[0018] In the figure: Control Module - 1, Display Module - 2, Function Button Module - 3, Power Supply Module - 4. Detailed Embodiments

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4 , the present utility model provides a technical solution for an LED dot matrix screen fault testing device: An LED dot matrix screen fault testing device includes a control module 1, a display module 2, a function key module 3, and a power supply module 4;

[0021] Control module 1: The control module 1 conducts data interaction with the LED screen through the UART communication protocol. The UART protocol is a widely used serial data communication protocol, which has the characteristics of simplicity and reliability and is suitable for the application scenarios of the present invention. The control module is built-in with a preset test program, which can control the LED screen to display various colors and states to detect the performance of the screen. The test program can be customized according to needs to meet the test requirements of different models and specifications of LED screens. Through the preset test program, the control module automatically executes the test process without manual intervention, improving the efficiency and accuracy of the test;

[0022] Display module 2: The display module 2 is equipped with an LED display screen for real-time display of the working current of the LED screen and the static current at the microampere level. The display module is connected to the control module, can real-time read the test data obtained by the control module, and display it through the LED display screen;

[0023] Function key module 3: The function key module 3 is provided with three keys, corresponding to the functions of automatic detection, manual detection, and sleep detection respectively. The key module is connected to the control module. When the user presses different keys, corresponding instructions will be sent to the control module, and the control module executes the corresponding test mode according to the instructions.

[0024] Power supply module 4: The power supply module 4 provides a stable working voltage of 4.2V for the testing device to ensure the stable operation of the testing device. The power supply module independently powers the LED screen, enabling the screen to be tested without relying on an external power supply, improving the flexibility of the test.

[0025] A specific usage method of an LED dot matrix screen fault testing device includes the following steps:

[0026] Step 1, power on and initialization:

[0027] When the user turns on the power of the test device, the test device will perform a power-on self-check and initialization settings to ensure that each module is in a normal working state; after the initialization is completed, the test device enters the standby state, waiting for the user to operate;

[0028] Step 2, select the detection mode:

[0029] The user selects the required detection mode through the key module, including automatic detection, manual detection, and sleep detection;

[0030] When the user presses the corresponding key, the control module of the test device will receive the instruction and be ready to enter the corresponding detection process;

[0031] Step 3, automatic detection process:

[0032] If the user selects the automatic detection mode, the test device will automatically execute the preset test program. The control module sends instructions to the LED screen through the UART communication protocol to control the screen to display different colors and states, such as all white, all black, and the three primary colors of red, green, and blue. In each test stage, the display module will read and display the working current and static current data of the LED screen in real time;

[0033] Step 4, manual detection process:

[0034] If the user selects the manual detection mode, the test device will wait for the user to input specific test instructions through the key module. The user can select a specific color or state for testing according to needs. The control module sends corresponding control signals to the LED screen according to the instructions input by the user, and reads and displays the test results in real time. The user can perform further analysis and judgment based on the test results;

[0035] Step 5, sleep detection process:

[0036] If the user selects the sleep detection mode, the test device will simulate the working condition of the LED screen in the sleep state. The control module will send instructions to make the LED screen enter the sleep state and continuously monitor the static current data of the screen. The display module will display the current data in the sleep state in real time for the user to analyze and evaluate;

[0037] Step 6, shutdown and exit.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An LED dot matrix screen fault testing device, characterized in that: It includes a control module (1), a display module (2), a function button module (3), and a power supply module (4); Control module (1): The control module (1) conducts data interaction with the LED screen through the UART communication protocol; Display module (2): The display module (2) is equipped with an LED display screen for real-time display of the working current of the LED screen and the static current at the microampere level; Function button module (3): The function button module (3) is provided with three buttons corresponding to the functions of automatic detection, manual detection, and sleep detection respectively; Power supply module (4): The power supply module (4) provides a stable working voltage of 4.2V for the test device, and the power supply module independently powers the LED screen.

2. The LED dot matrix screen fault testing device according to claim 1, characterized in that: The control module (1) has a preset test program built in, which can control the LED screen to display various colors and states to detect the performance of the screen.

3. An LED dot matrix screen fault testing device according to claim 1, characterized in that: The control module (1) automatically executes the test process through the preset test program.

4. The LED dot matrix screen fault test device according to claim 1, characterized in that: The display module (2) is connected to the control module, reads the test data obtained by the control module in real time, and displays it through the LED display screen.

5. The LED dot matrix screen fault test device according to claim 1, characterized in that: The power supply module (4) independently powers the LED screen.

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