Track board crack detection method of ballastless track

Abstract

The embodiment of the invention provides a track board crack detection method of a ballastless track. The method comprises the following steps: acquiring three-dimensional point cloud data and two-dimensional gray data of a to-be-detected track, extracting target three-dimensional point cloud data of a track board region in the three-dimensional point cloud data; based on a positioning result of the target three-dimensional point cloud data in the three-dimensional point cloud data, extracting the target two-dimensional gray data of the track board region in the two-dimensional gray data by combining a region corresponding relation between the three-dimensional point cloud data and the two-dimensional gray data; extracting crack feature points in the track board region by statistically analyzing the difference between the target two-dimensional gray data and the corresponding first reference data through the statistics, or statistically analyzing the difference between the target three-dimensional point cloud data and the corresponding second reference data; and acquiring a crack detection result of the track board region according to the aggregation and continuity of the crack feature points. Through the track board crack detection method provided by the embodiment of the invention, the fast, continuous and automatic detection of the track board crack can be realized, the manpower cost is reduced, and the detection speed is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of detection, and more specifically, to a method for detecting cracks in a track plate of a ballastless track. Background technique [0002] In the application of high-speed rail lines, ballastless track has been put into use in large quantities. During the operation of the ballastless track slab, there are different degrees of fine cracks in the concrete of the track slab. The formation of cracks in the track slab will reduce the durability of the ballastless track, reduce the insulation performance of the track, and weaken the bearing capacity of the track. At the same time, it may affect the safety of the ballastless track, and even cause safety hazards. In order to detect the cracks of the track slab, in the prior art, a manual static detection method is usually used. In this method, each work area is generally responsible for a certain line, and inspections are carried out at...

AI Technical Summary

Problems solved by technology

This manual-based and sub-specialized detection method has high labor costs. Due to the slow detection speed, it takes a long time to occupy the line and low work efficiency, and the cracks are relatively small compared to the naked eye. It is easy to miss detection at night, and the accuracy rate is low. Meet actual needs

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