Elevator guide rail surface abrasion degree detection method and device based on computer vision

Abstract

The invention belongs to the field of elevator detection, in particular to an elevator guide rail surface abrasion degree detection method and device based on computer vision. The method comprises thefollowing steps that a laser projector projects a controllable light strip to a surface of an elevator guide rail according to measurement needs to form a feature point; images of feature points on the surface of the elevator guide rail are shot, then the images are processed, and pixel coordinates corresponding to the feature points are extracted and obtained; the pixel coordinates of the extracted feature points are converted into spatial coordinates of the points according to the conversion parameters obtained by calibration, and the spatial reconstruction of the elevator guide rail is completed; and the three-dimensional shape of the elevator guide rail is obtained through the spatial reconstruction, and the surface abrasion degree of the elevator guide rail is judged. According to the elevator guide rail surface abrasion degree detection method and device based on the computer vision, the image processing is carried out, so that the recognition rate is high, the measurement result is accurate, and the problem that the existing detection technology is incomplete is overcome.

Description

technical field [0001] The invention relates to the field of elevator detection, in particular to a computer vision-based method and device for detecting the wear degree of the surface of an elevator guide rail. Background technique [0002] Large-scale economic construction has brought unprecedented development opportunities to the elevator market, but also brought problems such as inspection and maintenance of elevators. The internal structure of elevators is relatively complicated, and the safe operation of elevators has become a problem worthy of attention. The guide rail plays a guiding role in the lifting movement of the elevator. It limits the movement of the car and the counterweight in the horizontal direction, ensures the mutual position of the car and the counterweight in the hoistway, and prevents the inclination caused by the unbalanced load of the car. During operation, there will always be a large friction force between the guide shoe and the guide rail. Long-...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method and device for detecting the wear degree of the elevator guide rail surface based on computer vision to overcome the imperfection of the existing detection technology

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