A vehicle-mounted method for detecting peak intervals of track height irregularities

Abstract

The invention discloses a vehicle-mounted detection method for the height and irregularity peak interval of the track, which includes data collection, data preprocessing, model establishment and training, prediction and evaluation to obtain the best confidence interval width, and only needs to collect the three-axis vibration acceleration of the car body , the angular velocity and the geomagnetic intensity at the location, there is no need to install other sensors outside the vehicle, and it does not involve the dynamic parameters of each component of the vehicle, which solves the existing problems of high detection cost, low detection efficiency, and low detection robustness The problem of long-term high-frequency detection is realized, and the detection efficiency is significantly improved. The method of the present invention has strong adaptability and generalization ability, and can be applied to the detection of uneven peak intervals in various track structures such as bridges, roadbeds, and tunnels. .

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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