Elevator guide rail perpendicularity detection method

Abstract

The invention relates to the technical field of elevators and aims at providing an elevator guide rail perpendicularity detection method. The method includes the following steps that an image collecting device photographs guide rail images provided with a heavy hammer or a laser plummet in a hanging mode; the guide rail images collected by the image collecting device are read; the target guide rail image needing image processing in the guide rail images is cut out; the target guide rail image is processed; guide rails and a vertical line are selected, the main guide rail and the auxiliary guide rail are selected; the pixel deviation value of the selected guide rail perpendicularity is calculated based on the pixel Pythagorean theorem, the actual deviation value of the guide rail perpendicularity is calculated according to the pixel correction value and the guide rail maximum deviation value and whether the guide rails are qualified or not is judged. The elevator guide rail perpendicularity detection method has the advantages that the problem that measuring results are affected by human factors in manual measuring is solved, errors are reduced, the defects of low measuring efficiency, difficult operation, poor measuring reliability and the like are overcome, and efficient, controllable and high-precision detection is achieved. Image processing algorithms such as color model replacement, channel selection and grey level transformation are adopted, and the operation time and the image storage space are reduced.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a method for detecting verticality of elevator guide rails. Background technique [0002] The verticality of the elevator guide rail is an important performance index to ensure the normal operation of the elevator. It directly affects the comfort of the elevator ride, the reliability of the operation and the life of the guide rail. The verticality of the elevator guide rails needs to be tested during installation, and also needs to be tested during routine maintenance. Although the traditional "hanging wire detection method" uses simple measurement tools and intuitive measurement data, the obvious disadvantages are that the benchmark is difficult to fix, the error is large, the data recording is cumbersome, it is greatly affected by human factors, and the work efficiency is low. Later, the industry launched a laser plummet for elevator guide rail detection. Its principle is to...

AI Technical Summary

Problems solved by technology

Although the traditional "hanging wire detection method" uses simple measurement tools and intuitive measurement data, the obvious disadvantages are that the benchmark is difficult to fix, the error is large, the data recording is cumbersome, it is greatly affected by human factors, and the work efficiency is low

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