Railway gauge rapid measuring device and method

Abstract

The invention discloses a rapid railway gauge measuring device and method. Aircraft is used as a carrier, the measuring device is mounted at the bottom of the aircraft; the aircraft is arranged in a space above the railway track; the aircraft flies along a track, the measuring device collects original steel rail image data, takes a pre-built steel rail BIM model point cloud as a template, extractsthe inner side surface of the template point cloud on the basis of template-oriented point cloud matching, and takes the inner side surface as a reference surface, thereby extracting the inner side surface of the actually measured steel rail point cloud, and finally achieving the quick measurement of the track gauge. The device and method have the advantages of less occupied resources for measurement, short detection time, non-contact measurement and the like.

Description

technical field [0001] The invention belongs to the technical field of optical detection, relates to a railway track detection technology, and in particular relates to a railway gauge rapid measurement device and a rapid measurement method thereof. Background technique [0002] Railway transportation has become the preferred mode of transportation for the public today, and plays an important role in the transportation of goods. As the basis of railway operation, the rapid detection of railway environmental infrastructure cannot be ignored. The change of the track gauge will cause various vibrations of the train and change the force of the wheel and rail, which is the controlling factor affecting the safety and stability of the train operation on the track, and also an important reason for the damage and failure of the track structural components. With the improvement of the operation speed and the continuous expansion of the operation scale, regular track gauge detection and...

AI Technical Summary

Problems solved by technology

In "Vision based rail track extraction and monitoring through drone imagery", Arun Kumar Singh et al. used drones to obtain images of railway scenes, and then separated the tracks from the surrounding environment according to HSV color, and used Canny edge detection and nearest neighbor algorithm to extract parallel rails. And it is used to calculate the track gauge, which proves the feasibility and high efficiency of using the aircraft for track detection. However, this method does not take into account the three-dimensional I-shaped structure of the rail, and only studies the two-dimensional plane view, resulting in the inability to distinguish the extracted edge line. Whether it belongs to the inner working surface of the rail head or the bottom of the rail will have an adverse effect on the distance measurement accuracy, thereby affecting the practicability of the distance measurement equipment

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