Improved detection method for environment and light in product appearance defect detection

Abstract

The invention discloses an improved detection method for environment and light in product appearance defect detection. The method comprises the steps of S1 removing dust on the surface of a plate; S2shooting by using a CCD camera, and carrying out camera shooting detection on the plate; S3 light compensation: arranging shadowless lamps around the CCD camera; S4 light and shade double-field detection: arranging an LED stripe lamp to irradiate the surface of the plate; S5 adjusting the distance between the CCD camera and a light source, and adjusting the CCD camera and the light source througha stepping motor; and S6 outputting defect types and defect positions. According to the invention, dust on the surface of the plate is removed through a dust suction device; dust on the surface of theplate is prevented from influencing defect detection of the plate to a certain extent; the shadowless lamps are used for irradiating the surface of the plate, which prevents certain influence of theshadow of lamp light on detection of the surface of the plate; and the LED stripe lamp is adopted, so that bright and dark stripes are formed on the surface of the plate; and defects on the surface ofthe plate are detected through double-field detection and comparison.

Description

technical field [0001] The invention belongs to the technical field of product detection, and more specifically relates to an improved detection method for environment and light in product appearance defect detection. Background technique [0002] In the production process of various plates, the plate shows that it is easy to have defects due to production problems, but some defects are relatively small and cannot be easily observed by human eyes, which makes the defects on the surface of the plate very difficult. Obtained, will make defective defective plates sold out, resulting in low product quality, but the detection of products in the existing technology is easily affected by the dust on the product surface, so that when the camera is shooting, it is very difficult It is easy to mistake dust for a defective product, which leads to low quality of the product, and there are also great defects in the lighting of the prior art, which makes the light bright and dark, and als...

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Problems solved by technology

[0002] In the production process of various plates, the plate shows that it is easy to have defects due to production problems, but some defects are relatively small and cannot be easily observed by human eyes, which makes the defects on the surface of the plate very difficult. Obtained, will make defective defective plates sold out, resulting in low product quality, but the detection of products in the existing technology is easily affected by the dust on the product surface, so that when the camera is shooting, it is very difficult It is easy to mistake dust for a defective product, which leads to low quality of the product, and there are also great defects in the lighting of the prior art, which makes the light bright and dark, and also makes the pictures taken by the camera device defective. There is a great possibility of misunderstanding, which will cause a large number of defective products due to the environment and lighting problems of the detection device, which will affect the quality of the product

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