Machine vision-based elevator compensation chain place-R crack detection method

Abstract

The invention provides a machine vision-based elevator compensation chain place-R crack detection method. The method includes the following steps: (1) collecting an image which is a chain place-R crack image, and carrying out partitioning on the image, wherein image partitioning comprises threshold segmentation for extracting a centerline of an elevator compensation chain and a place-R area, whichcontains to-be-detected defects, to obtain a to-be-detected target area image of the place-R area; (2) carrying out corresponding local enhancement, filtering and noise removal and edge extraction onthe to-be-detected target area image, which is collected in the step (1), of a place R, and then carrying out area enhancement processing on the place R to obtain an ROI area image; (3) carrying outthreshold segmentation, open operation and morphological feature extraction on the ROI area image obtained in the step (2), primarily determining the defects thereof, and extracting candidate defect images; and (4) carrying out secondary determination on the candidate defect images, which are obtained in the step (3), according to location features to obtain a final defect image determination result. According to the method, an automation degree is higher, detection is accurate, and detection efficiency is high.

Description

technical field [0001] The invention relates to the technical field of machine vision detection methods, in particular to a method for detecting cracks at R of an elevator compensation chain based on machine vision for livestock. Background technique [0002] my country is the world's largest producer and consumer of elevators. The huge elevator market has promoted the vigorous development of the elevator parts industry. The elevator balance compensation chain is one of the key components that balance the operation of the elevator. It is used to balance the weight of the traction wire rope and accompanying cables during the movement of the elevator car to ensure the stability and safety of the elevator operation. At the same time, as my country's elevator market enters a period of equal emphasis on new installation and maintenance, a large number of old elevators need to replace the compensation chain every year. Therefore, there is a huge market demand for elevator balance...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems of high labor intensity, low detection efficiency and missed detection in the elevator compensation chain reproduction detection process existing in the prior art, the present invention provides a machine-based Crack detection method at R of elevator compensation chain based on vision

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