Train brake pad thickness detection method and system

Abstract

The invention discloses a train brake pad thickness detection method and system. The method comprises the following steps: acquiring train brake pad image data and train mileage data; extracting first brake pad lower end thickness data and second brake pad lower end thickness data contained in the train brake pad image data; generating first brake pad lower end abrasion rate data and second brake pad lower end abrasion rate data based on the first brake pad lower end thickness data, the second brake pad lower end thickness data and the mileage data; constructing a training sample set composed of a plurality of groups of manually labeled first brake pad upper end thickness data, second brake pad upper end thickness data, first brake pad lower end thickness data and second brake pad lower end thickness data; constructing a brake pad minimum thickness prediction model based on the first brake pad lower end wear rate data and the second brake pad lower end wear rate data; and training a brake pad minimum thickness prediction model based on the training sample set, and generating an optimal thickness prediction model for predicting a brake pad minimum thickness value.

Description

technical field [0001] The invention relates to the technical field of rail vehicle detection, in particular to a method and system for detecting the thickness of a train brake pad. Background technique [0002] With the rapid development of high-speed trains, the safety of train operation has become the focus of research in the field of rail transit. As a braking device for train operation, the brake pads will wear due to frictional heat generation. When the thickness of the brake pads reaches the limit, it will cause the brake pads to failure, increasing the risk of train operation. Therefore, how to effectively detect the thickness of the brake pad is one of the key issues to ensure the safety of train operation. [0003] The traditional methods for detecting the thickness of the brake pad include an online detection system for the brake pad and manual detection using a brake pad detection caliper. Although the traditional online monitoring system for brake pads can eff...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a method and system for detecting the thickness of a train brake pad. By improving the processing method of detection data, an optimal thickness prediction model capable of characterizing the mapping relationship between the thickness of the lower end of the brake pad and the minimum thickness of the brake pad is constructed. , which solves the problem of low reliability of the detection results caused by the failure of the traditional automatic detection method for the thickness of the brake pad to detect the thickness of the upper end of the brake pad

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