A method of mileage calibration based on railway track detection data
A technology for detecting data and railway tracks. It is applied in the directions of measuring distance, measuring device, surveying and mapping, and navigation. It can solve the problems of limited mileage calibration and inability to make full use of waveform data, and achieve the effect of eliminating mileage drift errors.
Active Publication Date: 2020-05-01
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
The shortcomings of these two mileage calibration methods are mainly manifested in two aspects. One is that the mileage calibration of ledger information has a large limitation and cannot make full use of waveform data. The second is that multi-batch mileage calibration does not use ledger information for more exact match
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[0057] The present invention is described in detail below in conjunction with accompanying drawing of description:
[0058] Such as figure 1 Shown is the total algorithm flow chart of the present invention based on railway track detection data for mileage calibration, which specifically includes the following steps:
[0059] Step A: Divide the waveform to be calibrated and the reference waveform into sections;
[0060] Step B: Calculate the mileage offset O of each segment of the waveform to be calibrated using the segment matching algorithm, wherein step B includes the following two points:
[0061] B1: Search for the section number of the waveform to be calibrated that matches the first section of the reference waveform as the basic matching point P;
[0062] B2: Starting from the basic matching point P, traverse each section of the waveform to be calibrated and calculate and record the mileage offset of each section;
[0063] Step C: Calibrate the data of each section by...
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The invention provides a method for mileage calibration based on track detection data, which belongs to the technical field of track geometric parameter detection. Aiming at the problem of mileage drift error in the detection data generated by the existing track detection trains, the invention proposes a method for processing the track detection data by combining multiple batches and section matching algorithms. The main steps of the present invention are as follows: firstly, segmenting the reference waveform, then comprehensively using different segment matching modes to calculate the mileage error of each segment of the waveform to be calibrated, and finally using the obtained mileage error to perform segment-by-segment mileage calibration on the waveform data to be calibrated. The present invention is applicable to the mileage calibration of the detection data of different regions and different levels of tracks, and satisfies the requirements of the design and display of the mileage calibration algorithm of the track detection data to a large extent; at the same time, the present invention can use the track detection data for quality evaluation and prediction, Furthermore, it provides a more accurate theoretical basis for guiding track maintenance.
Description
technical field [0001] The invention belongs to the technical field of track geometric parameter detection, in particular to a method for mileage calibration based on railway track detection data. Background technique [0002] Track is one of the main technical equipment of railway and the basis of driving. One of the functions of the track is to ensure that the wheels run on a fixed line to achieve a smooth wheel profile. If the track is not smooth, this function will be destroyed and the wheel profile will no longer be smooth. Unsmooth wheel profile will cause vehicle vibration and changes in wheel-rail force. The change of vehicle vibration and wheel-rail force not only affects the comfort and safety of the train, but also shortens the life of the track equipment, and further deteriorates the track irregularity. Therefore, in order to ensure that the track provides a reliable operation basis for train operation, the railway official department often organizes and implem...
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IPC IPC(8): G01C22/00
CPCG01C22/00
Inventor 龚勋师恩李昕昕郭浩龙黄鑫
Owner SOUTHWEST JIAOTONG UNIV