Method and device for aligning detected waveforms

Abstract

The present invention provides a method and device for aligning detected waveforms. The method includes: acquiring ledger mileage data to generate a plurality of ledger waveforms; acquiring waveform data to be detected to generate waveforms to be aligned; Align the waveforms for matching to obtain the mileage data of each waveform to be aligned; according to the mileage data of each waveform to be aligned, the radio frequency tag mileage data, the node mileage data of the straight line section, the Align the number of valid nodes in the waveform, determine the baseline of each waveform to be aligned; calculate the similarity between each waveform to be aligned, and align the waveform with the smallest similarity value and meet the similarity threshold according to the baseline. The invention solves the problem of alignment of multiple detection waveforms in the ballasted track or the ballastless track, and ensures that the marked mileage of the detected waveform 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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