Train clearance detection device and method

Abstract

The invention provides a train clearance detection device. The train clearance detection device comprises a portal frame, a range finder, camera brackets and laser cameras; the portal frame is mountedon a foundation; the portal frame comprises two stand columns and a cross beam connected with the two stand columns; the range finder is installed on the stand columns and used for monitoring the position of a train body; a plurality of camera brackets are arranged on the cross beam, the stand columns and in a trench, and the camera brackets in the trench are connected with the portal frame through connecting rods; and each camera bracket is provided with a laser camera. The invention further provides a train clearance detection method. The train clearance detection method comprises the stepsof camera group calibration, detection system verification, coordinate system establishment, data acquisition, contour correction, real-time monitoring and the like. A contour splicing technology isadopted, all contour points are spliced into a complete vehicle body section contour in a sensor cascading mode, the real size condition of the train body is accurately restored, line laser local detection and overall detection are achieved through calibration of the camera group, and the detection precision is greatly improved.

Description

technical field [0001] The invention relates to the technical field of precise measurement of train vehicles, in particular to a train limit detection device and a detection method. Background technique [0002] The train vehicle limit means that according to the regulations of the Ministry of Railways, in order to ensure the normal operation and safety factors of the train vehicles, when the vehicles approach buildings or any equipment, they are not allowed to exceed the outline dimension line. No part of a train vehicle shall under any circumstances exceed the dimensions prescribed by the train vehicle boundaries. The detection method of the train vehicle limit is mainly obtained by obtaining the external contour (envelope) of the vehicle. A cross-sectional contour perpendicular to the center line of the track at a certain moment during the operation of the train vehicle is the maximum contour of the cross-section of the vehicle. The maximum contour of all cross-sectional...

AI Technical Summary

Problems solved by technology

The detected data will also have the following problems: it is greatly affected by human factors, the tool accuracy is not high, the measurement data is inconsistent for many times, the measurement labor intensity is high, and it cannot be repeated; when workers read the measurement data, they are affected by experience and the environment. Obtaining the results is prone to bias; and the traditional measurement method cannot obtain accurate error values ​​when measuring the whole vehicle or a partial vehicle body, and it takes a long time to measure once, resulting in low measurement efficiency

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