Display panel test system

Abstract

The utility model relates to the technical field of kitchen appliances, and particularly discloses a display panel test system, which comprises an industrial control host, a tester, a first test fixture and a second test fixture. The industrial control host controls the test system to work, the tester internally comprises a control module, a signal acquisition module, a communication module and a power supply module, the control module simulates manual finger touch to send an instruction to a tested display panel, and the signal acquisition module is responsible for capturing a response signal of the display panel. The first test fixture is used for fixing and connecting the display panel to be tested, and the second test fixture is connected with the power supply control board, so that the display panel is ensured to obtain stable power supply in the test process. Compared with the prior art, the display panel test system has the advantages that the external power supply control board and the corresponding test fixture are introduced, so that the adaptability of the test system is remarkably improved, the cost is reduced, the test period is shortened, the test efficiency is improved, and the display panel test system is easy to maintain and upgrade.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen equipment, and particularly relates to a display board test system. Background Art

[0002] In the prior art, the finished circuit board control assembly of kitchen appliances includes two parts: a display board and a power supply board. Among them, the power control board, as one of the core components of the circuit, is responsible for providing stable power supply for the entire circuit board and controlling the normal operation of each functional module. The display board is responsible for presenting the working status, parameter information, etc. of the circuit to the user in an intuitive manner. Due to the diversity and customization characteristics of the display board in design, different display boards may require different drive signals, control logics, and power supply specifications. Therefore, precise matching must be achieved between the power control board and the display board to ensure the normal startup and accurate display of the display board. In the traditional test system, the built-in power control board is usually fixed and can only match one or a few specific display boards. This means that when it is necessary to test new or different types of display boards, the test system often cannot directly meet the requirements. To solve this problem, manufacturers usually need to develop new test systems or test modules for each new display board, which not only increases the test cost, but also prolongs the test cycle and reduces the test efficiency. Since a new test system needs to be developed every time a new display board is tested, this has led to a significant increase in the test cost. Content of the Utility Model

[0003] The invention purpose of the utility model is to solve the problem of high test cost of the display board test system, and provide a display board test system using an external power control board.

[0004] To achieve the above invention purpose, the utility model adopts the following technical solutions:

[0005] A display board test system includes an industrial control host, a tester, a first test fixture, and a second test fixture. Among them, a test program is set on the industrial control host; the tester includes a housing body and a control module, a signal acquisition module, a communication module, and a power supply module arranged on the housing body; the first test fixture is used to place and connect the display board to be tested; the second test fixture is used to place and connect the power control board supporting the display board to be tested; the tester is communicatively connected to the industrial control host through the communication module to work under the control of the industrial control host, to receive test instructions from the industrial control host, and both the control module and the signal acquisition module are electrically connected to the first test fixture, the power supply module is electrically connected to the second test fixture, and the first test fixture is electrically connected to the second test fixture, so that the power supply module supplies power to the display board to be tested through the power control board, the control module sends operation instructions to the display board to be tested in a manner of simulating the touch of a human finger, and the signal acquisition module acquires the signals of the display board to be tested.

[0006] In this invention, the power control board is responsible for providing the required power specifications to the display board under test, ensuring its normal operation during the test. Compared with the prior art, the display board testing system of this invention significantly improves the adaptability of the testing system, reduces costs, shortens the testing cycle, and improves testing efficiency by introducing an external power control board and corresponding test fixtures, and is also easy to maintain and upgrade.

[0007] Furthermore, the outer casing is provided with a first power output interface, the second test fixture is provided with a first power input interface and a second power output interface, the first test fixture is provided with a second power input interface, the second test fixture is connected to the first power output interface of the power supply module through the first power input interface, and is connected to the second power input interface of the first test fixture through the second power output interface, thereby supplying power to the power control board through the power supply module, and supplying power to the display board through the power control board.

[0008] Furthermore, the signal acquisition module includes a power signal acquisition module and an audio-visual signal acquisition module. The outer casing is respectively equipped with a control command output interface, a power signal acquisition interface, and an audio-visual signal acquisition interface corresponding to the control module, the power signal acquisition module, and the audio-visual signal acquisition module. The first test fixture is also equipped with a control command input interface, a power signal transmission interface, and an audio-visual signal transmission interface on a one-to-one basis. In this solution, the power signal acquisition module is used to acquire data such as the standby power and no-load voltage of the display board under test, while the audio-visual signal acquisition module is used to acquire display digital and audio signals.

[0009] Furthermore, the control command output interface and control command input interface are respectively set as foolproof interfaces, the power signal acquisition interface and power signal transmission interface are respectively set as foolproof interfaces, and the audio-visual signal acquisition interface and audio-visual signal transmission interface are respectively set as foolproof interfaces.

[0010] Furthermore, the control command output interface and control command input interface, power signal acquisition interface and power signal transmission interface, and audio-visual signal acquisition interface and audio-visual signal transmission interface are all correspondingly marked.

[0011] Furthermore, the audio-visual signal acquisition interface and the audio-visual signal transmission interface are either HDMI interfaces or Digital SpreadPort interfaces.

[0012] Furthermore, the first test fixture is equipped with a first data transmission interface, and the second test fixture is equipped with a second data transmission interface, with the first and second data transmission interfaces electrically connected to each other, thereby enabling data interaction between the power control board and the display board under test. In this solution, the power control board obtains the operating status of the display board under test based on the data transmitted between the first and second data transmission interfaces, and adjusts the power supply parameters (such as voltage and current limits) according to the specific operating status of the display board (such as on, off, brightness adjustment, etc.). It should be noted that in this invention, the power control board typically has a built-in intelligent power management chip. These chips need to communicate with the power management circuit on the display board to ensure the stability and safety of the power supply. Without this communication, the display board may not be able to correctly identify the power status, resulting in failure to display properly or even an alarm.

[0013] Furthermore, the first power output interface and the first power input interface are ribbon cable interfaces. This solution can effectively reduce the space occupied by the interfaces.

[0014] Furthermore, the second power output interface and the second power input interface are terminal blocks. This solution provides multiple terminals, allowing for flexible connection of wires of different specifications.

[0015] Furthermore, the control module includes an instruction generation module, a signal conversion module, a capacitor analog circuit, a signal processing module, and a communication interface connected in sequence. The instruction generation module is used to receive control signals sent by the industrial control host and generate corresponding digital instructions, and transmit the digital instruction signals to the signal conversion module. The signal conversion module converts these digital signals into capacitor analog signals. The signal processing module conditions the capacitor analog signals and outputs them through the communication interface. Attached Figure Description

[0016] Figure 1 This is the system block diagram of the test system;

[0017] Figure 2 This is a schematic diagram of the working principle of the tester. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0019] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "horizontal", "inner", and "outer" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0020] See Figure 1-2 As shown, the utility model discloses a display board testing system, which includes an industrial control host, a tester, a first testing fixture and a second testing fixture. Among them, a testing program is provided on the industrial control host; the tester includes an outer shell and a control module, a signal acquisition module, a communication module, and a power supply module arranged on the outer shell; the first testing fixture is used to place and connect the display board to be tested; the second testing fixture is used to place and connect the power control board supporting the display board to be tested; the tester is communicatively connected to the industrial control host through the communication module to work under the control of the industrial control host, to receive test instructions from the industrial control host, and both the control module and the signal acquisition module are electrically connected to the first testing fixture, the power supply module is electrically connected to the second testing fixture, and the first testing fixture is electrically connected to the second testing fixture, so that the power supply module supplies power to the display board to be tested through the power control board, the control module sends operation instructions to the display board to be tested in a manner of simulating the touch of an artificial finger, and the signal acquisition module acquires the signals of the display board to be tested.

[0021] A first power output interface is provided on the above-mentioned outer shell, the second testing fixture is provided with a first power input interface and a second power output interface, the first testing fixture is provided with a second power input interface, the second testing fixture is connected to the first power output interface of the power supply module through the first power input interface, and is connected to the second power input interface of the first testing fixture through the second power output interface, so as to supply power to the power control board through the power supply module and supply power to the display board through the power control board.

[0022] The above-mentioned signal acquisition module includes a power signal acquisition module and an audio-visual signal acquisition module. The outer shell is respectively provided with a control instruction output interface, a power signal acquisition interface and an audio-visual signal acquisition interface corresponding to the control module, the power signal acquisition module and the audio-visual signal acquisition module, and the first testing fixture is provided with a control instruction input interface, a power signal transmission interface and an audio-visual signal transmission interface one by one.

[0023] The above-mentioned control instruction output interface and the control instruction input interface are correspondingly set as anti-fooling interfaces, the power signal acquisition interface and the power signal transmission interface are correspondingly set as anti-fooling interfaces, and the audio-visual signal acquisition interface and the audio-visual signal transmission interface are correspondingly set as anti-fooling interfaces.

[0024] The above-mentioned control instruction output interface and the control instruction input interface, the power signal acquisition interface and the power signal transmission interface, and the audio-visual signal acquisition interface and the audio-visual signal transmission interface are all correspondingly provided with identifiers.

[0025] The above-mentioned audio-visual signal acquisition interface and the audio-visual signal transmission interface are one of HDMI interfaces and DisplayPort interfaces.

[0026] The first test fixture is equipped with a first data transmission interface, and the second test fixture is equipped with a second data transmission interface. The first and second data transmission interfaces are electrically connected, thereby enabling data interaction between the power control board and the display board under test. In this solution, the power control board obtains the operating status of the display board under test based on the data transmitted between the first and second data transmission interfaces, and adjusts the power supply parameters (such as voltage and current limits) according to the specific operating status of the display board (e.g., on / off, brightness adjustment). It should be noted that in this invention, the power control board may have a built-in intelligent power management chip. These chips need to communicate with the power management circuit on the display board to ensure the stability and safety of the power supply. Without this communication, the display board may not be able to correctly identify the power status, leading to abnormal display or even an alarm.

[0027] The aforementioned first power output interface and first power input interface are ribbon cable interfaces. This solution can effectively reduce the space occupied by the interfaces.

[0028] The aforementioned second power output interface and second power input interface are terminal blocks. This solution provides multiple terminals, allowing for flexible connection of wires of different specifications.

[0029] The aforementioned control module includes an instruction generation module, a signal conversion module, a capacitor analog circuit, a signal processing module, and a communication interface connected in sequence. The instruction generation module is used to receive control signals sent by the industrial control host and generate corresponding digital instructions, and transmit the digital instruction signals to the signal conversion module. The signal conversion module converts these digital signals into capacitor analog signals. The signal processing module conditions the capacitor analog signals and outputs them through the communication interface.

[0030] Workflow: The test system starts up, and the tester supplies power to the display board under test through the power control board. After the power control board and the display board communicate, the control module sends operation commands to the display board under test in a manner that simulates human finger touch, and the signal acquisition module acquires the signals of the display board under test to complete the test of the display board under test. After the inspection is completed, the test system automatically determines NG / OK through the industrial control host.

[0031] In this invention, the power control board is responsible for providing the required power specifications to the display board under test, ensuring its normal operation during the test. Compared with the prior art, the display board testing system of this invention significantly improves the adaptability of the testing system, reduces costs, shortens the testing cycle, and improves testing efficiency by introducing an external power control board and corresponding test fixtures, and is also easy to maintain and upgrade.

[0032] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A display panel testing system, characterized by, The utility model relates to a display panel testing device, including: an industrial control host computer provided with a test program; a tester including a housing and a control module, a signal acquisition module, a communication module, and a power supply module arranged on the housing; a first test fixture for placing and connecting a display panel under test; a second test fixture for placing and connecting a power control board matched with the display panel under test; the tester is in communication connection with the industrial control host computer through the communication module and is controlled to work by the industrial control host computer, and the control module and the signal acquisition module are both in electrical connection with the first test fixture, the power supply module is in electrical connection with the second test fixture, and the first test fixture is in electrical connection with the second test fixture, so that the power supply module supplies power to the display panel under test through the power control board, the control module sends operation instructions to the display panel under test in the mode of simulating manual finger touch, and the signal acquisition module acquires signals of the display panel under test.

2. The test system of claim 1, wherein: The housing is provided with a first power output interface, the second test fixture is provided with a first power input interface and a second power output interface, the first test fixture is provided with a second power input interface, the second test fixture is connected with the first power output interface of the power supply module through the first power input interface and is connected with the second power input interface of the first test fixture through the second power output interface.

3. The test system of claim 1, wherein: The signal acquisition module includes a power signal acquisition module and a sound and image signal acquisition module, the housing is respectively provided with a control instruction output interface, a power signal acquisition interface, and a sound and image signal acquisition interface corresponding to the control module, the power signal acquisition module, and the sound and image signal acquisition module, and the first test fixture is provided with a control instruction input interface, a power signal transmission interface, and a sound and image signal transmission interface one by one.

4. The test system of claim 3, wherein: The control instruction output interface and the control instruction input interface, the power signal acquisition interface and the power signal transmission interface, and the sound and image signal acquisition interface and the sound and image signal transmission interface are all correspondingly provided as fool-proof interfaces.

5. The test system of claim 3 or 4, wherein: The control instruction output interface and the control instruction input interface, the power signal acquisition interface and the power signal transmission interface, and the sound and image signal acquisition interface and the sound and image signal transmission interface are all correspondingly provided with marks.

6. The test system of claim 3, wherein: The sound and image signal acquisition interface and the sound and image signal transmission interface are one of HDMI interfaces and DisplayPort interfaces.

7. The test system of claim 1, wherein: The first test fixture is provided with a first data transmission interface, the second test fixture is provided with a second data transmission interface, and the first data transmission interface and the second data transmission interface are in electrical connection, so as to realize data interaction between the power control board and the display panel under test.

8. The test system of claim 2, wherein: The first power output interface and the first power input interface are flat cable interfaces.

9. The test system of claim 2, wherein: The second power output interface and the second power input interface are terminal rows.

10. The test system of claim 1, wherein: The control module is provided with a capacitor simulation circuit.

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