Automatic limit detection device for rail freight train

Abstract

The invention relates to an automatic limit detection device for a rail freight train to realize automatic limit measurement of the freight train. The device comprises a T-shaped supporting frame, animage data acquisition module, a data processing module and a rail coordinate datum target. The T-shaped supporting frame comprises a hook connector, a telescopic vertical rod and a transverse rod, wherein the hook connector is positioned at the bottom and matched with a connection hook between freight train carriages, one end of the telescopic vertical rod is connected with the hook connector, and the other end of the telescopic vertical rod is in rotational connection with the transverse rod through a rotatable connector. The image data acquisition module is arranged on the transverse rod and used for acquiring forward and downward surface images of the freight train. The data processing module comprises a data processing terminal which controls the image data acquisition module to shootsynchronously through a hard trigger synchronizer. The rail coordinate datum target is used for establishing a rail plane-coordinate system to fit a rail plane. Compared with the prior art, the automatic limit detection device has advantages of movability, one-man operation, high measurement accuracy and the like.

Description

technical field [0001] The invention relates to the field of railway freight measurement, in particular to an automatic detection device for the limit of railway freight trains. Background technique [0002] With the development of modern surveying and mapping technology and computer vision technology, photo matching and 3D reconstruction technology are more and more used and practiced in production. In order to ensure the safety of the rolling stock running on the railway line and prevent the rolling stock from colliding with the buildings and equipment adjacent to the line, the contour dimension line that is not allowed to exceed the rolling stock and the buildings and equipment close to the line is called the limit . The out-of-gauge gauge charts formulated by the railway department for the transportation of out-of-gauge goods, as well as the regulations related to station design and gauge, are all based on the railway gauge. There are some deficiencies in existing frei...

AI Technical Summary

Problems solved by technology

But these two methods have certain limitations: manual tape measurement requires the cooperation of multiple people, and the staff need to climb up and down on the freight vehicle, there are certain unsafe factors, and the accuracy is greatly affected by many factors ( There are errors in the measurement of the height limit datum level of freight vehicles, the measurement of the left and right width limits, and the selection of the central axis. Most freight vehicles are curved surfaces, and there are certain errors in the measurement of the tape)

The three-dimensional laser measurement system for the limit gate, the position of the limit gate is fixed, the mobility measurement is not strong, and the site of the freight station needs to be remodeled, and the cost is relatively high

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