Track line vertical curve curvature detection method and device and track line detection system

Abstract

The invention discloses a track line vertical curve curvature detection method and device and a track line detection system, and relates to the technical field of track detection. The method comprises the following steps of: obtaining filtered output data of the gradiometer by using a first time domain digital low-pass filter and a shift filter; according to the gravitational acceleration and the filtered output data of the gradiometer, determining a detection beam pitch angle based on the gradiometer; taking the pitch angle of the detection beam subjected to low-pass filtering by the first finite impulse response low-pass filter as a first track line inclination angle; and determining a first curvature of the vertical curve of the track line according to the first track line inclination angle and the spatial sampling interval. According to the invention, the pitch angle of the detection beam based on the gradiometer is determined through the filtered output data of the gradiometer. The detection beam pitch angle after low-pass filtering of the first finite impulse response low-pass filter serves as the track line inclination angle, and the curvature of the vertical curve is determined based on the track line inclination angle, so that the accuracy of track line vertical curve curvature detection is improved.

Description

technical field [0001] The invention relates to the technical field of track detection, in particular to a method, a device and a track line detection system for detecting the curvature of a vertical curve of a track line. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] As the operating mileage of my country's railways continues to increase, the speed of trains is also increasing, and the safety and comfort of rolling stock during operation has also attracted much attention. As the main disturbance source of the wheel-rail system, track irregularity is the main cause of rolling stock vibration. Vehicle vibration not only affects passenger ride comfort, but also endangers driving safety in severe cases. Track irregularity is defined as the deviation of the track geometry fro...

AI Technical Summary

Problems solved by technology

The existing detection items of the track line detection system include track line parameters such as gauge, track direction, height, level, superelevation, triangular pit, etc. At present, the line slope parameters cannot be detected

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