Vehicle-mounted track uneven peak value interval detection method

Abstract

The invention discloses a vehicle-mounted track uneven peak interval detection method, which comprises the steps of data acquisition, data preprocessing, model establishment and training, and prediction and evaluation to obtain an optimal confidence interval width. The method only needs to acquire three-axis vibration acceleration and angular velocity of a vehicle body and geomagnetic intensity of a position where the vehicle body is located. other sensors do not need to be installed outside the vehicle, kinetic parameters of all parts of the vehicle are not involved, the problems of high detection cost, low detection efficiency and low detection robustness in the prior art are solved, long-term high-frequency detection is achieved, the detection efficiency is remarkably improved, and the method has high adaptability and generalization ability and can be suitable for uneven peak interval detection in various track structures such as bridges, roadbeds, tunnels and the like.

Description

technical field [0001] The invention relates to the technical field of railways and rail transit, in particular to a vehicle-mounted method for detecting peak intervals of track height irregularities. Background technique [0002] In railway transportation, track irregularity is the deviation between the spatial geometry of the track and the design basis. Track irregularity changes periodically and randomly along the longitudinal direction of the rail, and has a certain deterioration trend on the time scale, which is one of the main factors controlling traffic safety. At present, domestic railway systems generally use track inspection vehicles to detect track irregularities during the maintenance of skylights, and judge the service status of track geometry based on the test results, so as to formulate corresponding adjustment and maintenance plans. However, the rail inspection vehicle is an expensive professional inspection equipment, and the railway bureau usually conducts...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of high detection cost, low detection efficiency, and low detection robustness in the prior art, the present invention provides a vehicle-mounted detection method for the peak interval of track height irregularity, which only needs to collect the three-axis Vibration acceleration, angular velocity, and geomagnetic strength at the location do not need to install other sensors outside the vehicle, and do not involve the dynamic parameters of each component of the vehicle, which solves the problems mentioned in the above background technology

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