Method for detecting spring tongue gap of fastener

Abstract

The invention discloses a method for detecting a spring tongue gap of a fastener and belongs to the field of railway infrastructure inspection. The method comprises the main steps of obtaining three-dimensional morphology data at two sides of an orbit through a three-dimensional data acquisition system and converting the three-dimensional morphology data into a two-dimensional depth image; extracting local two-dimensional depth image of an area in which the fastener is located and carrying out thresholding processing on the local two-dimensional depth image; extracting an outline of a bolt ofthe fastener and calculating the center position of the bolt; carrying out sampling towards one side of a steel rail by employing the center of the bolt as a starting point and then carrying out thresholding processing on a sampling sequence; and calculating a spring tongue height of the fastener and a spring tongue gap height and judging whether a spring tongue gap risk exists or not according toa threshold. According to the detection method disclosed by the invention, the spring tongue gap of the fastener can be automatically and effectively detected and the potential safety hazard in trainoperation is eliminated in time.

Description

technical field [0001] The invention relates to the field of railway infrastructure detection, in particular to a method for detecting the separation of a spring tongue of a fastener. Background technique [0002] The fastener is an important part connecting the rail and the sleeper. Its function is to fix the rail on the sleeper, maintain the gauge and prevent the rail from moving vertically and horizontally relative to the sleeper. Therefore, the fastener plays an important role in ensuring the stability and reliability of the track. play a very important role. Whether the spring tongue of the fastener is out of the seam is an important manifestation of whether the fastener is fixed securely. Once the spring tongue is out of the seam, it will cause serious safety hazards. Therefore, it is very important to timely detect whether the spring tongue of the fastener is out of seam in the field of railway infrastructure detection. [0003] In terms of railway infrastructure te...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for detecting the seam separation of the spring tongue of a fastener, which can automatically detect whether the seam separation of the spring tongue of the fastener is detected by the method based on image processing, so as to solve the problem that the existing fastener detection system cannot detect the seam separation of the spring tongue of the fastener The problem

Images