Speed-testing distance-measuring method for railway trains

A technology of rail trains and ranging methods, applied in the field of rail trains, can solve the problems of low speed measurement accuracy, failure to meet the requirements of speed measurement and distance measurement accuracy, and the Doppler effect is not obvious, so as to achieve the effect of ensuring reliability and accuracy

Inactive Publication Date: 2020-03-10
通号城市轨道交通技术有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

The combination of radar speed sensor and axle speed sensor can avoid idling and slipping to a certain extent, but when the speed is low, the Doppler effect is not obvious, and the speed measurement accuracy is low, which cannot meet the accuracy requirements for speed measurement and distance measurement

Method used

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  • Speed-testing distance-measuring method for railway trains
  • Speed-testing distance-measuring method for railway trains
  • Speed-testing distance-measuring method for railway trains

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Embodiment Construction

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0047] figure 1 It is the flow chart of the method for measuring the speed and ranging of the rail train of the embodiment of the present invention, as figure 1 As shown, the method includes:

[0048] Step S01, obtain first driving data and second driving data respectively through the speed sensor module and the accelerometer module; wherein, th...

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Abstract

The embodiment of the invention provides a speed-testing distance-measuring method for railway trains. The method comprises the steps of respectively obtaining first driving data and second driving data through a speed sensor module and an accelerometer module, wherein the first driving data comprises a first speed and a first distance, and the second driving data comprises a second speed and a second distance; and according to the first driving data and the second driving data, judging whether an idling slippage condition is met, according to the judgment result, determining to adopt the first speed and the first distance, or according to the second speed and the second distance, obtaining current speed-testing distance-measuring results. According to the embodiment of the invention, thefirst driving data of a speed collecting module and the second driving data of the accelerometer module are obtained, whether the predetermined idling slippage condition is met is judged, and according to the judgment result, the speed-testing distance-measuring results of the railway train are obtained according to the first driving data or the second driving data, so that the reliability and theaccuracy of the speed-testing distance-measuring results can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of rail trains, in particular to a method for measuring speed and distance of rail trains. Background technique [0002] Vehicle on-board controller (Vehicle on-board Controller, VOBC) is mainly responsible for on-board train automatic protection (Automatic Train Protection, ATP) and train automatic operation (Automatic Train Operation, ATO) in urban rail transit. The basic parameters of the operation. At present, the on-board equipment mainly uses axle speed sensors and radar speed sensors to measure the speed and distance of the train. Wheel shaft speed sensor technology is relatively mature, but once idling and slippage occurs, the wheel speed will deviate greatly from the actual running speed. In order to avoid the phenomenon of idling and skidding, the railway department has adopted certain adhesion control, which has largely avoided idling and skidding. [0003] Through the overall scheme design of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61L25/02
CPCB61L25/021B61L25/028
Inventor 柴荣阳吴亮曹学思周丽华马新成郑志军彭朝阳
Owner 通号城市轨道交通技术有限公司
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