LED display screen refresh rate detection system and method

Abstract

The invention relates to an LED display screen refresh rate detection system and method. Full-automatic process detection is adopted, the complex work of screen disassembling, circuit overlap welding and oscilloscope connection of the conventional method is greatly simplified, and the acquisition process can be performed anytime without onsite guidance of professional engineers so that the requirements for inspectors can be greatly reduced, the influence of human factors on measurement can be minimized, and the detection result is accurate and operation is convenient. Therefore, the LED display screen refresh rate detection system and method can be widely applied to the field of LED display screen refresh rate detection.

Description

technical field [0001] The invention relates to the field of detection of LED display screens, in particular to a detection system and method for refresh rate of LED display screens. Background technique [0002] In recent years, the problem of LED display testing standards has become increasingly prominent, and has even become one of the key indicators that affect whether a project contract is signed. Although my country issued the first version of SJ / T11141-2003 "General Specifications for LED Displays" and supporting SJ / T11281-2007 "Test Methods for LED Displays" in 2003, the description of the display refresh rate test in this test method , most of the technical content involved stayed at the stage of 2002-2005, and the LED display technology has developed rapidly in recent years, making many performance indicators and use environments in the original standard incompatible with the current development of LED displays. Unable to meet the needs of LED display technology dev...

AI Technical Summary

Problems solved by technology

From the above definitions and measurement methods, it can be seen that the measurement of the refresh rate requires the testers to have rich theoretical knowledge and testing experience of electronic products, and also requires the testers to understand the circuit design of the LED display, which is not available to third-party testing agencies. Therefore, according to the traditional test method, the product manufacturer is generally required to debug the test system on site, which may affect the fairness of the test result and be easily affected by human factors. In addition, the traditional test method requires the use of oscilloscope probes This is to test the LED display one by one, which requires the work of dismantling the screen, welding the circuit, and connecting the oscilloscope. The working process is cumbersome.

[0013] In recent years, this method has been used in the industry to measure the refresh rate of LED displays, and there is no breakthrough in new technical means.

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