CCD Light Source Intensity Adaptive Adjustment System and Method

Abstract

The invention provides a CCD light source intensity self-adaptive adjustment system, comprising an upper computer, a lower computer, a light source and a CCD camera, wherein the light source, the lower computer, the upper computer and the CCD camera are sequentially connected by connecting wires; the upper computer is provided with A light source intensity analysis system, the lower computer is provided with a light source intensity adjustment control system. The present invention also provides a method implemented by the above system, comprising the steps of: initializing settings; outputting a preset light source intensity signal, and controlling the lighting of the light source; a CCD camera acquires an image of the illumination intensity of the light source and transmits it to a host computer; the intensity of the light source The analysis system detects and analyzes the intensity of the light source, and outputs an adjustment control signal; the lower computer controls the light source and adjusts the intensity of the light source according to the adjustment control signal. The invention can perform automatic feedback control and adjust the intensity of the light source according to the image, realize the self-adaptive adjustment of the intensity of the light source, and has the advantages of intelligence, high adjustment efficiency and good effect.

Description

technical field [0001] The invention relates to light source intensity adjustment technology, in particular to an adaptive adjustment system and method for acquiring images through a CCD camera and adaptively adjusting the light source intensity of the CCD. Background technique [0002] At present, the image detection system is often used for quality inspection in product production, that is, through light source irradiation, the image of the product is obtained for product inspection and analysis. In the existing image detection system, the CCD camera needs to obtain images suitable for human eyes or computer analysis and recognition under suitable and stable lighting conditions. However, in the existing image detection system, the light source intensity cannot be automatically judged and adjusted by the computer, and the light source intensity can only be manually adjusted according to the operator’s subjective visual judgment and feedback on the light source intensity to ...

AI Technical Summary

Problems solved by technology

However, in the existing image detection system, the light source intensity cannot be automatically judged and adjusted by the computer, and the light source intensity can only be manually adjusted according to the operator’s subjective visual judgment and feedback on the light source intensity to obtain the product image under the desired light source intensity, so that possible and easily discernable by the human eye

When the computer is used for automatic identification of products, the manual adjustment of the light source brings a series of problems. First, the work efficiency is low. Recognition also needs to adjust the light source, so that the automatic process has to participate in manual operation; secondly, the stability is poor. Usually, the automatic recognition process has a consistent requirement for image brightness, and manual adjustment is affected by subjective factors and operating techniques. Make the product undetectable

[0003] The traditional light source intensity adjustment uses a small current thyristor dimming circuit, which uses the change of the conduction angle of the thyristor to achieve dimming, so it is difficult to achieve when the light source intensity requires strict linear output

Moreover, the traditional light source intensity adjustment is completed by manually rotating or toggling the potentiometer. Due to the structure of the potentiometer, it is difficult to achieve a linear change in the light source intensity during the adjustment process, and it can only be recognized by the human eye within a general range.

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