Dynamic Acquisition System of Wheelset Tread Image Data Based on Edge Diffraction Line Light Source

Abstract

The invention relates to a wheel set tread image data dynamic acquisition system based on an edge diffracted ray light source. The system is characterized by comprising multiple data acquisition units and a data processing unit. The data acquisition units are used for acquiring image data of a wheel tread in real time, carrying out edge line extraction on the image data and transmitting the straightness of an extracted edge line to the data processing unit, and the data processing unit compares the straightness of the edge line with the straightness of an edge line of a standard wheel tread, judges the wear degree of wheels and obtains the surface wear degree value of the wheel set. The system can be widely applied to the field of automatic overhaul devices for trains.

Description

technical field [0001] The present invention relates to a wear data dynamic acquisition system, in particular to a wheel set tread image data dynamic acquisition system based on an edge diffraction light source. Background technique [0002] In recent years, the exploration of wheel tread wear detection methods at home and abroad has been progressing, which are mainly divided into two categories: contact detection methods and non-contact detection methods. [0003] Contact detection method: For the direct contact method, two piezoelectric acceleration sensors are installed on the track to collect the effective vibration waveform data of the wheel and estimate the tread scratch depth. This method uses point contact to collect and use an algorithm to estimate the scratch Depth is also difficult to guarantee the integrity of detection. After the car body is put into the warehouse, the whole vehicle is lifted up. By controlling the rotation speed of the wheel set, scanning the ...

AI Technical Summary

Problems solved by technology

Among them, optical detection: use the laser line light source and CCD detector to obtain two key parameters reflecting the wear of the tread, the thickness and height of the rim. In this method, there is an angle difference between the CCD and the wheel set during the acquisition process, and the image restoration can only be completed through the calculation of the image signal. , there is noise in the image, so the detection accuracy is not high enough

Eddy current testing: It is only effective in simulation experiments, but the results of eddy current testing are easily disturbed by the material itself and other external natural conditions

To sum up, although there are a lot of related equipment, none of them can meet the needs of the site for accuracy and convenient operation, so the popularity is not high

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