Rail settlement on-line monitoring device and method based on line detection

Abstract

The invention discloses a rail settlement on-line monitoring method based on line detection, and the method comprises the steps: collecting a rail side image which comprises a high-precision calibrated scale, a rail side, a background part, and a projection straight line of the rail upper surface to the front surface; after an image is preprocessed, detecting the contour of a projection straight line through edges, fitting the projection straight line through Hough transform, obtaining a straight line function, and determining the settlement amount of a rail by comparing the distance between the front projection straight line and the rear projection straight line. The invention further discloses a railway track settlement monitoring device based on line detection. The railway track settlement monitoring device comprises an image acquisition device, an image processing device, a data transmission device, an assembly control module, a monitoring center, a state alarm and a high-precisioncalibrated scale which is fixed to the side face of a rail and used for establishing an absolute coordinate system. The device and the method are particularly suitable for regions with serious rail settlement, and can realize on-line monitoring of rail settlement so as to ensure safe operation of trains.

Description

technical field [0001] The patent of the present invention relates to the field of rail transit, in particular to an on-line monitoring device and method for rail settlement based on straight line detection. Background technique [0002] With the vigorous development of my country's railway transportation, ensuring the safety of trains has become an important issue in railway transportation. During the operation of the railway, due to the influence of factors such as regional settlement, underground mining, water extraction, excavation of foundation pits or stacking around the railway, changes in the surrounding environment, and other factors, some sections of the track have subsidence to varying degrees, resulting in the rail surface. Local irregularities may lead to rail fractures, train derailment and other accidents in severe cases. If the railway track subsidence exceeds a certain value, it will cause the change of the gauge and the fracture of the rail. Once these sub...

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Problems solved by technology

[0004] At present, the railway track detection is mainly based on geodetic leveling, including precision leveling, precision triangular elevation measurement, etc. This method is a settlement detection method commonly used at home and abroad, but this method needs to be completed by professional technicians using professional equipment , the instruments used are expensive, maintenance and repairs require special personnel, the cost of detection is high, the degree of automation is low, and online monitoring and analysis of rail settlement cannot be realized

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