Method for detecting surface defects of ceramic valve cores based on machine vision

Abstract

The invention discloses a method for detecting surface defects of ceramic valve cores based on machine vision. The method comprises the following steps: respectively establishing templates and mask plates for the ceramic valve cores in different sizes; respectively performing template shape matching with the polishing surface templates and non-polishing surface templates in corresponding sizes according to a to-be-detected surface image of a to-be-detected ceramic valve core; confirming the surface, position and direction of the to-be-detected surface image, and then aligning the to-be-detected surface image with a selected template and mask plate; performing Blob detection on the to-be-detected surface image of the to-be-detected ceramic valve core; and performing crack detection on the to-be-detected surface image. According to the method for detecting surface defects of ceramic valve cores based on machine vision provided by the invention, the surface defects of the to-be-detected ceramic valve core can be automatically detected, the detection stability is high, the detection cost is low, the detection speed is high and the detection rate reaches 95%. Besides, the total time for detecting and recognizing various defects is less than 0.3 second. The method can be widely applied to the field of detection for the surface defects of the ceramic valve cores.

Description

technical field [0001] The invention belongs to the field of detection of ceramic valve cores, and in particular relates to a method for detecting surface defects of ceramic valve cores based on machine vision. Background technique [0002] The ceramic spool is the core component of the faucet, which directly affects its sealing performance and service life. When the working surface of the ceramic spool is unevenly polished, or there are cracks and damage, the faucet will leak. Therefore, before the assembly of the faucet, it is necessary to carry out strict appearance inspection on the ceramic valve core. At present, the vast majority of faucet manufacturers use manual inspection to inspect the appearance of ceramic valve cores. This not only increases labor costs and management costs, but also cannot guarantee the accuracy and efficiency of ceramic valve core detection due to the fatigue and instability of human eye detection. And with the expansion of production scale ...

AI Technical Summary

Problems solved by technology

This not only increases labor costs and management costs, but also cannot guarantee the accuracy and efficiency of ceramic valve core detection due to the fatigue and instability of human eye detection

And with the expansion of production scale and the improvement of production line speed, manual inspection cannot meet the requirements of modern large-scale industrial production in terms of efficiency.

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