Method and device for aligning detection waveforms

Abstract

The invention provides a method and device for aligning detection waveforms. The method comprises the following steps of acquiring the standing book mileage data to generate a plurality of standing book waveforms; acquiring the waveform data to be detected to generate the waveforms to be aligned; matching each to-be-aligned waveform according to the standing book waveform to obtain the mileage data of each to-be-aligned waveform; determining a reference line of each to-be-aligned waveform according to the mileage data of each to-be-aligned waveform, the radio frequency tag mileage data, the node mileage data of the linear section, the number of the matched standing book waveforms of each to-be-aligned waveform and the number of effective nodes in each to-be-aligned waveform; and calculating the similarity between the waveforms to be aligned, and aligning the waveform with the minimum similarity value and meeting the similarity threshold according to the reference line. According to themethod, the alignment of multiple detection waveforms in a ballast track or a ballastless track is achieved, and it is guaranteed that the mark mileage of the detection waveforms is consistent with the actual mileage.

Description

technical field [0001] The invention relates to the field of track detection, in particular to a method and device for aligning detection waveforms. Background technique [0002] The quality of track geometry has a great influence on driving safety and comfort. Therefore, the detection and management of track geometry has been paid more and more attention. The comprehensive inspection vehicle is an important means of track geometric state detection. It has been widely recognized and widely used at home and abroad for its fast driving speed, high detection efficiency, and better reflection of dynamic track geometric state. However, there is a common problem in the data detected by the track inspection vehicle: there is a certain difference between the detected mileage value and the real mileage value. Even if the GPS satellite positioning system and the ground-assisted positioning system are used, this difference cannot be completely eliminated. In some cases the deviation c...

AI Technical Summary

Problems solved by technology

However, there is a common problem in the data detected by the track inspection vehicle: there is a certain difference between the detected mileage value and the real mileage value. Even if the GPS satellite positioning system and the ground-assisted positioning system are used, this difference cannot be completely eliminated. In some cases the deviation can even reach 100m

[0003] However, special sections cannot be aligned, such as: inspection vehicle replacement, line maintenance, station entry and exit, data loss, long and short chains, extremely deteriorated lines, abnormal interference that cannot be identified in advance, etc., which may easily cause waveforms to fail to align, especially for single-use Evaluation of the correlation coefficient will cause many segments to fail to align, which will interfere with subsequent data analysis

[0004] Although a lot of research work has been done on mileage correction and waveform analysis at home and abroad, the research objects are usually a few waveforms with good quality or abnormally obvious, and it is difficult to continuously and automatically apply them to the production environment

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