A compressor appearance inspection method based on machine vision

Abstract

The present invention uses machine vision technology to design a compressor appearance detection method. The method first adopts a method based on machine vision to detect defects on the nameplate of the compressor and record the two-dimensional code number, and then performs image preprocessing. Finally, defect detection is carried out on 7 items including the screw, suction pipe, exhaust pipe, foot rubber plug, positioning pin, liquid reservoir, and compressor cylinder. The invention provides a compressor appearance detection method based on machine vision to replace the traditional manual detection method, which can better meet the detection tasks, improve the accuracy and efficiency of compressor product appearance detection, and reduce the false detection rate and leakage. At the same time, it can reduce labor costs and reduce production costs for enterprises. It has high application value and high economic benefits. The actual verification proves that this method can be better applied to the actual compressor product appearance inspection task.

Description

technical field [0001] The invention relates to the technical field of product appearance inspection, in particular to machine vision-based appearance inspection of compressor products. Background technique [0002] The appearance quality of compressor products affects the product recall rate and the reputation of compressor manufacturers, and directly determines the survival of enterprises. With the improvement of the automation level of compressor manufacturing enterprises and the increase of product output, the requirements for the accuracy and efficiency of product appearance inspection of compressors are also increasing. There are many appearance inspection items for compressor products, mainly including the verticality inspection of the suction and exhaust pipes and screw rods, the parallelism inspection between the liquid receiver and the compressor body, the inspection of the cooperation of TP bolts, the inspection of the cooperation of grounding rubber plugs, and th...

AI Technical Summary

Problems solved by technology

[0003] The appearance inspection of traditional compressors adopts manual inspection methods. There is no uniform standard for manual inspection. Missed inspections and false inspections are high, and the efficiency is low and cannot meet the efficiency requirements of mass production in factories.

On the other hand, the wages of workers are high, which increases the cost of compressor production

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