An automatic darkening welding filter shading number and response time detection device

Abstract

The invention provides a detection device for the shading number and response time of an automatic dimming welding filter, which belongs to the field of detection of a dynamic dimming welding filter. The device comprises a collimated light source (2), a darkroom (10) and a detection and control circuit (6); a right-angle mirror (3), a four-dimensional moving sample stage (9), a photoelectric sensor are arranged in the darkroom (10) (5) and a trigger light source (8); the measured filter sample (4) is installed on the four-dimensional motion sample stage (9), and the trigger light source (8) is pressed on the measured filter sample (4) on the photodetector; the detection and control circuit (6) is respectively connected to the trigger light source (8), photoelectric sensor (5) and four-dimensional motion sample stage (9) in the darkroom (10) through cables.

Description

technical field [0001] The invention belongs to the field of dynamic dimming welding filter detection, and in particular relates to a detection device for the shading number and response time of an automatic dimming welding filter. Background technique [0002] During welding operations, a large amount of ultraviolet rays, infrared rays, and strong light will be generated to damage the eyes. Therefore, people have developed dimming welding filters to protect welders. The light-changing welding filter is composed of a photodetector, a light valve, a control circuit, a power supply, a frame, and inner and outer protection sheets, etc., and automatically controls the light-shading signal conversion of the filter through the initiation and extinction of the arc to realize the light-to-dark state conversion, thereby Effectively improve the protection of workers and work efficiency. Response time and shading number are the most important indicators of automatic darkening welding...

AI Technical Summary

Problems solved by technology

However, there is still a lack of equipment that can effectively measure the response time of automatic darkening welding filters in my country. This is mainly because the existing test equipment cannot meet the needs of most welding filters on the market in terms of response time measurement accuracy.

For example, the response time test device developed by Zhejiang University has the highest response time test accuracy in China. However, this test device can only measure filters with a response time of 0.5ms. At present, the response time of many filters is lower than this value, resulting in The scope of application of the test equipment is still narrow

In addition, the existing test device system is very complicated in structure, needs to be connected to the host computer, the cost is high, the use is inconvenient, and it is difficult to carry out commercial promotion

Therefore, my country still lacks effective automatic darkening welding filter quality inspection equipment, and the development of a new type of inspection equipment will play a beneficial role in the popularization and quality supervision of this product

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