Vehicle-mounted rail gauge measurement system and measurement method

Abstract

The present invention discloses a vehicle-mounted rail gauge measurement system and measurement method and belongs to the technical field of metering equipment characterized by using optical methods. According to the method, two sets of laser sources and cameras are combined together to obtain the lateral displacement change quantities of a locomotive relative to a left rail and a right rail respectively; the difference value of the lateral displacement change quantities of the locomotive relative to the left rail and the right rail is utilized to reflect the change of the lateral movement quantity between wheel tracks; and therefore, indirect measurement of the rail gauge of the rails can be realized. The rail gauge measurement method has the advantages of simple hardware structure, small data computation amount and high precision measurement, and can realize the non-contact dynamic measurement of rail gauge parameters.

Description

technical field [0001] The invention relates to the technical field of measuring equipment characterized by adopting an optical method, in particular to a vehicle-mounted rail gauge measuring system and a measuring method. Background technique [0002] Under the influence of natural factors and repeated train loads, the track is not only prone to elastic deformation, but also often undergoes permanent deformation, resulting in track irregularities. Track irregularity can cause various vibrations of the train and change the force of the wheel and rail. It is the controlling factor affecting the safety and stability of the train running on the track, and it is an important reason for the damage and failure of the track structural components. With the improvement of high-speed railway operation speed and the expansion of operation scale, it has become an important basic work in rail transportation to strengthen track dynamic detection, timely grasp track status information, cor...

AI Technical Summary

Problems solved by technology

This type of method is relatively complicated to calculate at first. Every time the gauge calculation is completed, it is necessary to calibrate the sensors at both ends of the track and the spatial coordinates, the extraction of the laser contour curve, the smoothing filter, the arc matching of the rail head, and the extraction of the gauge calculation points. Transformation and image processing process, a large amount of calculation

At the same time, during the dynamic detection process, the aggravation of vibration noise and the change of noise types make the calibration of the coordinates of the two sensors and the spatial coordinates and the robustness of the positioning algorithm for the center of the laser light band need to be verified.

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