Test system and method for detecting automatic brightness adjusting function of display device

Abstract

The invention relates to a test system and method for detecting an automatic brightness adjusting function of a display device. The test system comprises a computer, a programmable alternating current power supply, a light source, an illuminometer and a display device to be tested. The voltage of the lamp source is automatically and accurately adjusted through the control module so as to simulate a plurality of test illumination environments with different gears, and the illuminometer is used for monitoring the ambient brightness in real time. The system adopts closed-loop control logic to automatically judge whether the current illumination reaches the standard or not, if the current illumination does not reach the standard, the voltage is immediately fed back and adjusted, and the screen brightness response value of the display device is automatically read and recorded until the voltage reaches the standard, so that manual operation is completely replaced, and efficient and accurate full-automatic testing is realized.

Description

Technical Field

[0001] This invention relates to the field of flat panel display product technology, and more specifically to a test system and method for detecting the automatic brightness adjustment function of a display device. Background Technology

[0002] In existing technologies, flat panel display products are generally equipped with light sensors to enable automatic brightness adjustment. This function automatically adjusts the brightness of the display screen by detecting the ambient light intensity, thereby improving the user experience and reducing power consumption.

[0003] Currently, testing of automatic brightness adjustment functions mainly relies on manual operation. Testers need to manually replace light sources of different wattages to simulate different lighting environments and manually read and record the brightness response data of the display device to determine whether the automatic brightness function is working properly. Moreover, existing testing methods lack automatic judgment and reading of the current brightness value, making it impossible to determine in real time and accurately whether the current ambient brightness value has reached the preset standard. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a testing system and method for detecting the automatic brightness adjustment function of a display device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A test system for detecting the automatic brightness adjustment function of a display device includes a computer, a programmable AC power supply, a lamp source, an illuminance meter, and the display device to be tested. The computer has an internal control module; Programmable AC power supply with computer communication connection; The light source is electrically connected to a programmable AC power supply and is positioned directly in front of the light sensor of the display device; The illuminance meter is positioned at the edge of the light sensor area of ​​the display device and is connected to the computer for communication. The display device is equipped with automatic brightness function and is connected to the computer for communication. The control module regulates the voltage of the lamp source through a programmable AC power supply to achieve different brightness levels. The illuminance meter acquires ambient light illuminance data and transmits it to the control module. The control module acquires the screen brightness value from the display device and automatically records the ambient light illuminance data and the corresponding screen brightness value.

[0006] Furthermore, the illuminance meter communicates with the computer via a serial port.

[0007] Furthermore, the computer communicates with the display device via a serial port.

[0008] Furthermore, the light source is positioned 40cm directly in front of the light sensor of the display device.

[0009] This invention provides a testing method for detecting the automatic brightness function of a display device, employing the aforementioned testing system, characterized by comprising the following steps: Step S1: The control module sends a control command to the programmable AC power supply to adjust the voltage of the lamp source to change the light intensity of the test environment; Step S2: The illuminance meter acquires the current ambient illuminance data and transmits it to the control module; Step S3: The control module compares the received illuminance data with the preset environmental requirement range to make a judgment; Step S4: If the illuminance data does not meet the environmental requirements, return to step S2. The control module will issue an adjustment command again to adjust the voltage of the lamp source until the illuminance data meets the environmental requirements. If the illuminance data meets the environmental requirements, the control module will obtain the current screen brightness value from the display device. Step S5: The control module automatically records the illuminance data and the corresponding screen brightness value.

[0010] Step S6: By adjusting the voltage value of the lamp source, the lamp source provides multiple different brightness levels in sequence. Repeat steps S2-S5 to complete the test of the automatic brightness function of the display device under different lighting conditions.

[0011] The beneficial effects of this invention, achieved by employing the above technical solution, are as follows: The control module automatically and precisely adjusts the lamp source voltage to simulate multiple different levels of test lighting environments, and uses a lux meter to monitor the ambient brightness in real time. The system adopts closed-loop control logic, automatically determining whether the current lighting meets the standard. If it does not, it immediately provides feedback and adjusts the voltage until the standard is met. Once met, it automatically reads and records the screen brightness response value of the display device, thus completely replacing manual operation and achieving efficient and accurate fully automatic testing. Attached Figure Description

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 This is a hardware block diagram of the test system of the present invention; Figure 2 This is a flowchart illustrating the testing method of the present invention. Detailed Implementation

[0013] like Figure 1 As shown, the present invention provides a test system for detecting the automatic brightness adjustment function of a display device, comprising a computer, a programmable AC power supply, a lamp source, an illuminance meter, and the display device to be tested. The computer serves as the control core of the system, and it contains a control module (i.e., control software). Programmable AC power supply with computer communication connection; The light source is electrically connected to a programmable AC power supply via a power cord and is positioned directly in front of the light sensor of the display device; the brightness of the light source is controlled by the voltage value output by the programmable AC power supply. The illuminance meter is positioned at the edge of the light sensor on the display device (to ensure that the illuminance it measures is consistent with the illuminance sensed by the ambient light sensor) and is connected to the computer for communication. The display device is equipped with automatic brightness function and is connected to the computer for communication. The control module regulates the voltage of the lamp source through a programmable AC power supply to achieve different brightness levels. The illuminance meter acquires ambient light illuminance data and transmits it to the control module. The control module acquires the screen brightness value from the display device and automatically records the ambient light illuminance data and the corresponding screen brightness value.

[0014] The light source is mounted on an adjustable bracket. The bracket is adjusted so that the distance between the light source and the light sensor is precisely 40 centimeters, in order to ensure a uniform and stable lighting environment.

[0015] The computer establishes communication connections with the programmable AC power supply, illuminance meter, and display device via serial communication lines.

[0016] like Figure 2 As shown, the present invention provides a test method for detecting the automatic brightness function of a display device, comprising the following steps: Before the test begins, the system is initialized. The operator starts the control software, and the system checks that all peripherals (programmable AC power supply, illuminance meter, display device) are connected normally.

[0017] Step S1: The control module sends a control command to the programmable AC power supply to adjust the voltage of the lamp source to change the light intensity of the test environment; Step S2: The illuminance meter acquires the current ambient illuminance data and transmits it to the control module; Step S3: The control module compares the received illuminance data with the preset environmental requirement range to make a judgment; Step S4: Closed-loop feedback adjustment: If the illuminance data does not meet the environmental requirements, return to step S2, and the control module issues an adjustment command again to adjust the voltage of the lamp source until the illuminance data meets the environmental requirements; if the illuminance data meets the environmental requirements, the control module obtains the current screen brightness value from the display device. Step S5: The control module automatically records the illuminance data and the corresponding screen brightness value.

[0018] Step S6: By adjusting the voltage value of the lamp source, the lamp source provides multiple different brightness levels in sequence. Repeat steps S2-S5 to complete the test of the automatic brightness function of the display device under different lighting conditions until all levels have been tested.

[0019] This invention enables automated and high-precision testing of the automatic brightness function of display devices, overcoming the problems of low efficiency and error-proneness in traditional manual testing. Through intelligent closed-loop control, it ensures the accuracy of test conditions and can automatically complete continuous testing in multiple scenarios and at multiple levels, greatly improving testing efficiency and data reliability.

[0020] The specific embodiments of the present invention have been described above. However, those skilled in the art should understand that this is merely an example. Those skilled in the art can make various changes or modifications to this embodiment without departing from the principles and essence of the present invention, but all such changes and modifications fall within the protection scope of the present invention.

Claims

1. A testing system for detecting the automatic brightness adjustment function of a display device, characterized in that: This includes a computer, a programmable AC power supply, a light source, a lux meter, and a display device to be tested; The computer has a control module installed inside it; The programmable AC power supply is connected to the computer in communication. The light source is electrically connected to a programmable AC power supply and is positioned directly in front of the light sensor of the display device; The illuminance meter is located at the edge of the light sensor sensing area of ​​the display device and is connected to the computer in communication. The display device has an automatic brightness function enabled and is connected to a computer. The control module regulates the voltage of the lamp source through a programmable AC power supply to achieve different brightness levels. The illuminance meter acquires ambient light illuminance data and transmits it to the control module. The control module acquires the screen brightness value from the display device and automatically records the ambient light illuminance data and the corresponding screen brightness value.

2. The test system for detecting the automatic brightness adjustment function of a display device according to claim 1, characterized in that: The illuminance meter communicates with the computer via a serial port.

3. The test system for detecting the automatic brightness adjustment function of a display device according to claim 1, characterized in that: The computer communicates with the display device via a serial port.

4. The test system for detecting the automatic brightness adjustment function of a display device according to claim 1, characterized in that: The light source is positioned 40cm directly in front of the light sensor of the display device.

5. A test method for detecting the automatic brightness function of a display device, using the test system according to any one of claims 1-5, characterized in that: Includes the following steps: Step S1: The control module sends a control command to the programmable AC power supply to adjust the voltage of the lamp source to change the light intensity of the test environment; Step S2: The illuminance meter acquires the current ambient illuminance data and transmits it to the control module; Step S3: The control module compares the received illuminance data with the preset environmental requirement range to make a judgment; Step S4: If the illuminance data does not meet the environmental requirements, return to step S2. The control module will issue an adjustment command again to adjust the voltage of the lamp source until the illuminance data meets the environmental requirements. If the illuminance data meets the environmental requirements, the control module will obtain the current screen brightness value from the display device. Step S5: The control module automatically records the illuminance data and the corresponding screen brightness value.

6. Step S6: By adjusting the voltage value of the lamp source, the lamp source provides multiple different brightness levels in sequence. Repeat steps S2-S5 to complete the test of the automatic brightness function of the display device under different lighting conditions.

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