Locomotive benchmarking method and system based on UWB positioning

Abstract

The invention discloses a locomotive benchmarking method and system based on UWB positioning. According to position information of a UWB base stations and a real-time distance between a UWB label andeach UWB base station, the real-time spatial position of the UWB label under a WGS coordinate system or a three-dimensional coordinate system can be obtained. The real-time speed of a locomotive can be obtained according to a sampling period and the real-time spatial position of the UWB label, and finally a traction / braking force required for locomotive pull-in benchmarking is calculated accordingto the real-time spatial position of the UWB label and the real-time speed of the locomotive, so that traction / braking control over the locomotive is realized, and accurate benchmarking parking is realized; for locomotives, especially locomotives running on curved tracks, the benchmarking method can more accurately obtain the spatial position information of the UWB labels under a WGS coordinate system or a three-dimensional coordinate system, and more accurately realize positioning and speed measurement of the locomotives, thereby realizing one-time accurate benchmarking and parking of the locomotives.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and in particular relates to a method and system for benchmarking in locomotive stations based on UWB positioning. Background technique [0002] At present, the principle of the train positioning system is to use the speed sensor, Doppler radar, and beacon reader to measure the speed and position information of the vehicle, and transmit it to the vehicle automatic train protection system VATP (Vehicle Automatic Train Protection) with safety protection function, VATP_CPU Calculate and determine the specific position of the train on the track by fusing three types of positioning information, and transmit the train position / speed information to the on-board signal system, and the on-board signal system outputs traction / braking commands according to the current position information of the train, so as to achieve accuracy and reliability The trains are accurately benchmarked. [0003] With the r...

AI Technical Summary

Problems solved by technology

[0003] With the rapid development of rail transit in recent years, although rolling stock based on automatic driving (ATO) technology has been widely used in field services, there are deficiencies in the parking process of rolling stock based on automatic driving (ATO) technology. Phenomena such as over-marking, over-marking, and over-marking, etc., cause the vehicle gates to fail to stop accurately on the corresponding platforms, and affect passengers getting on the train. Most of the reasons are poor accuracy of train positioning and speed measurement.

When the speed or distance measurement is inaccurate, the deviation between the displacement calculated by the on-board signaling system and the actual displacement is too large, and the on-board signaling system will send traction / braking commands to control the locomotive to stop according to the stop distance calculated by the current position and the speed of the locomotive. Cause the on-board signal system to output the corresponding braking command in advance or lag behind, resulting in the phenomenon that the locomotive is under or over the standard

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