Automatic on-line detection method and device for size of automobile parts based on machine vision

Abstract

The invention relates to the on-line detection technical field by utilizing machine vision and an image processing technology, in particular to an automatic on-line detection method and a device for size of automobile parts based on machine vision, aiming at solving the problems that the labor intensity is high and the detection quality is poor by adopting an artificial on-line detection method for size of automobile parts. An industrial camera is utilized for shooting a clear, complete and flaw-free standard image for the automobile part running in an automatic production line, the image is utilized as a standard image template and is stored in a computer, the precision range of detection parameters for the automobile part is set according to user requirements, the image of the on-line running automobile part, which is shot in real time by the industrial camera, is transmitted to the computer and is compared with the standard image template and is processed, the size of the automobile part can be computed, and if the precision of the part is lower than the setting requirements, the computer starts and gives an alarm, so as to prompt operational staff to treat inferior-quality products. The method and the device have high detection precision to the automobile parts and have rapid speed, so as to greatly reduce the labor intensity for artificial detection.

Description

technical field [0001] The invention relates to the technical field of on-line detection by using machine vision and image processing technology, and mainly relates to a method and device for on-line detection of the size of auto parts by using a machine vision system at the production site of auto parts. Background technique [0002] In the production workshop of the automatic assembly line of auto parts, it is necessary to detect various sizes of auto parts. At present, the detection of the size of accessories in factory production mainly relies on manual measurement. Since the automated assembly line produces multiple parts per minute, and each part requires multiple part dimensions such as length, height, radius of the circle, etc., it is almost impossible to complete these measurements between two part production intervals. Therefore, in actual production, the method of product sampling inspection is adopted. This method cannot guarantee the qualified rate of unsample...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: Aiming at the problems that the manual inspection of the existing auto parts size is labor-intensive and prone to visual fatigue, the inspection quality cannot be guaranteed, and the pass rate of the products is low, a machine vision-based auto parts size measurement method is provided. The online automatic detection method and device greatly reduce the labor intensity of workers' detection, improve the accuracy of the detection of accessories and products, and can effectively ensure the pass rate of ex-factory products

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