Multifunctional display controller detection device and detection method thereof

Abstract

The invention discloses a multifunctional display controller detection device and a detection method thereof, which integrate the functions of display controller screen detection, display controller operation and data reading, have a portable design and are suitable for on-site instant detection. A CAN, a serial port and an I2C communication module are integrated, video signal output and touch screen control are supported, and comprehensive detection operation is achieved through Linux system control software running on a main control board. A software interface directly guides a user to complete a detection process, supports to update a test image through a USB interface, and adapts to diversified display controller detection requirements. The built-in battery module ensures the portability of the device, and is especially suitable for carrying out rapid and accurate function verification on the display controller under the conditions of high and low temperature, vibration and the like. The method simplifies the detection process, improves the efficiency, and is an innovative tool in the field of display controller detection and maintenance.

Description

Technical Field

[0001] This invention relates to the field of display controller testing, and more specifically to a multifunctional display controller testing device and its testing method. Background Technology

[0002] With the development of technology, various industrial control devices, detection devices, and other complex electronic devices often integrate some control functions into the display. Users operate the main device by pressing buttons on the display, typically by sending control commands, such as CAN, RS485, and I... 2 The display controller uses commands such as C and also has data storage capabilities. Therefore, during factory acceptance or customer acceptance testing, the functional testing of this type of display controller not only needs to check whether the display function is intact, whether the screen displays completely, whether there are any dead pixels, and whether the screen displays normally under various colors, but also needs to test the control function of the display controller, sending specific commands to the display controller to change its parameters and observing whether the display controller responds accordingly. In addition, it is also necessary to read the data stored in the display controller and determine whether the display controller is working properly based on the corresponding data.

[0003] Most existing testing devices on the market are display testing devices, which can only test whether the display is normal, or have display testing and simple control functions but poor portability. Video output testing, display controller operation testing, and display controller data reading testing each require different equipment, making the testing process cumbersome and inconvenient. Display controllers often also require further testing, such as high and low temperature tests, vibration tests, humidity tests, and salt spray tests. After these tests, functional testing is necessary to check if the device functions properly. High and low temperature tests, in particular, require functional testing under high or low temperature conditions. In these cases, the portability of the testing device becomes crucial; timely testing of the device under test ensures the accuracy of the test results. Summary of the Invention

[0004] To address the aforementioned technical problems in the existing technology, this invention provides a multifunctional display controller testing device and method. This device integrates display screen testing, display control testing, and display controller data reading testing into a single unit. It features a portable design and a built-in power supply, reducing the device's size. This device can meet the functional testing needs of display controllers under different circumstances, enabling a single device to complete all functional tests of the display controller, significantly saving testing time and simplifying the testing process. The specific technical solution is as follows: A multifunctional display controller testing device includes a housing, a power interface, a display controller connection port, fixing screws, and a touch screen. The housing houses a main control board and a battery compartment. A power switch is located on the side wall of the housing. The main control board includes a communication module and a video signal output module. The communication module includes a CAN communication module, a serial communication module, and an I / O port. 2 C. Communication module; the display controller connection port is connected to the communication module and the video signal output module.

[0005] Furthermore, the touch screen is equipped with a display screen and a touch screen control module. The touch screen transmits touch signals to the main control board, and the main control board outputs video signals to the touch screen. The video signal output module synchronously outputs the video signals of the display and touch screen control modules to the display controller terminal under test to compare whether the display controller screen under test is normal.

[0006] Furthermore, the display controller connection port is externally connected to the display controller under test, supplying power to the display controller, transmitting video signals, sending control signals, and receiving and sending data.

[0007] Furthermore, the touch screen displays the control software interface and enables human-computer interaction, while the main control board transmits control commands through the display screen and the touch screen control module.

[0008] Furthermore, the power interface is connected to the power circuit and voltage measurement circuit of the battery module and main control board inside the battery compartment.

[0009] A testing method for the aforementioned multifunctional display controller testing device includes functional testing, display testing, and data testing.

[0010] Furthermore, the functional test is as follows: periodically send commands to the display controller. When the operator presses the control command button, the command will change accordingly. If there is a corresponding response, the display controller is functioning properly.

[0011] Furthermore, the display test is as follows: after pressing the button, the display controller detection device will send a corresponding video signal to the display controller under test, and the operator will observe the phenomenon of the display controller under test and record it in the control software.

[0012] Furthermore, the data test is as follows: After pressing the data query command button, the display controller detection device will send a query command to the display controller under test. If the display controller query function is normal, it will send the corresponding data to the display controller detection device, and the received data will be displayed and stored on the control software interface.

[0013] Compared with the prior art, the significant advantages of this invention are: 1. A single device can perform screen detection, control detection, and data storage detection of the display controller. A single device achieves multiple function detections, reducing the cost required for detection equipment.

[0014] 2. The display controller testing device is small in size, easy to carry, and adaptable to various testing environments. It can perform functional testing immediately after the equipment has undergone high and low temperature tests, ensuring the accuracy of the test.

[0015] 3. The present invention has a built-in USB interface, which can be used to modify or add video and image files used for screen detection, so as to better detect different types of displays.

[0016] 4. The display controller detection device has a reserved serial communication interface for I / O. 2 It features common communication interfaces such as the Type-C interface, and also includes HDMI and SDI video signal interfaces, supporting up to 4K@60Hz video output. Later modifications to the control software will allow for the detection of different types of display controllers. Attached Figure Description

[0017] Figure 1 This is a front view of the multifunctional display controller detection device of the present invention; Figure 2 This is a side view of the multifunctional display controller detection device of the present invention; Figure 3 This is a top view of the multifunctional display controller detection device of the present invention; Figure 4 This is a cross-sectional view of the multifunctional display controller detection device of the present invention; Figure 5 This is a hardware block diagram of the multifunctional display controller detection device of the present invention; Figure 6 This is a software architecture diagram of the multifunctional display controller detection device of the present invention; Figure 7 This is a schematic diagram of the software interface of the multifunctional display controller detection device of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the software interface of the multifunctional display controller detection device of the present invention. Figure 2 ; Figure 9 This is a schematic diagram of the software interface of the multifunctional display controller detection device of the present invention. Figure 3 . Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings.

[0019] like Figure 1-4 As shown, the multifunctional display controller testing device of the present invention includes a housing 1, a power interface 2, a display controller connection port 3, fixing screws 4, and a touch screen 5. A main control board 6 and a battery compartment 7 are disposed inside the housing 1. A power switch 8 is provided on the side wall of the housing 1. The main control board 6 is provided with a communication module and a video signal output module. The communication module includes a CAN communication module, a serial communication module, and an I / O port. 2 C communication module, CAN communication module, serial communication module, I 2 The C communication module can perform control function testing and data reading function testing for display controllers of different types and with different communication protocols.

[0020] like Figure 5 As shown, the display controller connection port 3 is connected to the communication module and the video signal output module. The touch screen 5 is equipped with a display screen and a touch screen control module. The display and touch screen control modules are connected to the control software through a video interface and a USB interface. The touch screen 5 transmits touch signals to the main control board 6, and the main control board 6 outputs video signals to the touch screen 5. The video signal output module can synchronously output the video signals of the display and touch screen control modules to the display controller terminal under test to compare whether the display controller screen under test is normal.

[0021] The display controller connection port 3 connects to an external display controller under test, enabling it to supply power, transmit video signals, send control signals, and receive and send data. The touch screen display 5 displays the control software interface and facilitates human-machine interaction. The touch screen display 5 is connected to the main control board 6, which outputs video signals to the display. The main control board 6 transmits control commands through the display and the touch screen control module.

[0022] Power interface 2 is connected to the battery module in battery compartment 7 and the power circuit and voltage measurement circuit of main control board 6. The multi-functional display controller testing device of this invention has two modes: external power supply and internal battery power supply. When external power supply is available, it supplies power to main control board 6 and charges the battery module in battery compartment 7. When no external power supply is available, the internal battery supplies power to main control board 6. The battery module is built into the multi-functional display controller testing device, providing power assurance for display controller testing. The entire device is portable and can adapt to display controller testing under various conditions.

[0023] After the detection device is started, the system automatically starts and the control software is activated. The control software generates an operation interface, which is then displayed on the touch screen 5 and the display controller. For example... Figure 6-9As shown, the control software is based on the Linux system and written in QT. The software implements three main functions: functional testing, display testing, and data testing. Functional testing primarily implements data communication and test data storage. Display testing implements multimedia playback, video image data storage, and test result storage. Data testing implements data communication, data storage, multi-channel video signal transmission, and external data retrieval. Each of the three functions has a separate control interface, which is switched using the main interface's switching buttons. Figure 7 As shown, after the control software function test is started, it will automatically connect to the display controller's communication module and periodically send commands to the display controller. When the operator presses a control command button, the command will change accordingly. If the display controller is functioning properly, it will respond accordingly. Figure 8 As shown, after the control software displays that the test has started, pressing the button will cause the controller detection device to send a corresponding video signal to the display controller under test. The operator can then observe the phenomena observed by the display controller under test and record them in the control software. Figure 9 As shown, after the control software data test is started, it will automatically connect to the communication module of the display controller. When the operator presses the data query command button, the display controller detection device will send a query command to the display controller under test. If the display controller query function is normal, it will send the corresponding data to the display controller detection device. The received data will be displayed and stored on the control software interface.

[0024] The specific usage method is as follows: 1. Connect the display controller connection cable and connector to the display controller connection port 3 of the detection device; connect the external power supply or confirm that the internal battery has sufficient power.

[0025] 2. Press the power switch 8, the device will start automatically, and the control software will load and display the main interface.

[0026] 3. On the main interface, select the "Function Test" module, click each test button in sequence, and observe the response of the display controller. Use the arrow keys, confirmation key, and function test button to test the button functions of the display controller.

[0027] 4. Switch to the "Display Test" module, automatically or manually select the video signal output, and check the display effect. Record any abnormal or malfunctioning display conditions.

[0028] 5. Enter the "Data Test" module, send a data query command, and read the data stored in the display controller.

[0029] 6. After all tests are completed, the software automatically saves the test results, including the test time and device number. Test records can be exported via port 3 on the display controller.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications or substitutions made within the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A multifunctional display controller testing device, comprising a housing (1), a power interface (2), a display controller connection port (3), fixing screws (4), and a touch screen (5), characterized in that: The housing (1) contains a main control board (6) and a battery compartment (7). A power switch (8) is located on the side wall of the housing (1). The main control board (6) is equipped with a communication module and a video signal output module. The communication module includes a CAN communication module, a serial communication module, and an I / O module. 2 C. Communication module; The display controller connection port (3) is connected to the communication module and the video signal output module.

2. The multifunctional display controller detection device as described in claim 1, characterized in that: The touch screen (5) is equipped with a display screen and a touch screen control module. The touch screen (5) transmits touch signals to the main control board (6), and the main control board (6) outputs video signals to the touch screen (5). The video signal output module synchronously outputs the video signals of the display and touch screen control modules to the display controller terminal under test to compare whether the display controller screen under test is normal.

3. The multifunctional display controller detection device as described in claim 1, characterized in that: The display controller connection port (3) is externally connected to the display controller under test, which supplies power to the display controller, transmits video signals, sends control signals, and receives and sends data.

4. The multifunctional display controller detection device as described in claim 1, characterized in that: The touch screen (5) displays the control software interface and realizes human-computer interaction through the screen. The main control board (6) transmits control commands through the screen and the touch screen control module.

5. The multifunctional display controller detection device as described in claim 1, characterized in that: The power interface (2) is connected to the power supply circuit and voltage measurement circuit of the battery module and main control board (6) in the battery compartment (7).

6. A detection method for a multi-functional display controller detection device as described in any one of claims 1-5, characterized in that: The tests include functional testing, display testing, and data testing.

7. The detection method as described in claim 6, characterized in that: The functional test is as follows: periodically send commands to the display controller. When the operator presses the control command button, the command will change accordingly. If there is a corresponding response, the display controller is functioning properly.

8. The detection method as described in claim 6, characterized in that: The display test is as follows: After pressing the button, the display controller detection device will send a corresponding video signal to the display controller under test. The operator will observe the phenomenon of the display controller under test and record it in the control software.

9. The detection method as described in claim 6, characterized in that: The data test is as follows: After pressing the data query command button, the display controller detection device will send a query command to the display controller under test. If the display controller query function is normal, it will send the corresponding data to the display controller detection device. The received data will be displayed and stored on the control software interface.

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