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Train speed measurement and location method and system based on network distributed redundancy framework

A train speed measurement and distributed technology, which is applied in the direction of railway signal and safety, can solve the problems of performance degradation of speed measurement and distance measurement, and achieve the effect of improving reliability and accuracy

Active Publication Date: 2013-07-10
GUANGZHOU METRO GRP CO LTD +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the radar directly measures the movement information of the vehicle body, its measurement results are not affected by the abnormal movement of the wheels, but due to the influence of installation errors, electromagnetic interference and vehicle body shaking, the performance of speed measurement and distance measurement will decline.

Method used

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  • Train speed measurement and location method and system based on network distributed redundancy framework
  • Train speed measurement and location method and system based on network distributed redundancy framework
  • Train speed measurement and location method and system based on network distributed redundancy framework

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0027] figure 1 It is a flowchart of a method for speed measurement and location of a train based on a network distributed redundant architecture provided in Embodiment 1 of the present invention. Such as figure 1 As shown, it mainly includes the following steps:

[0028] Step 11, the first central processing unit CPU in the first speed measurement and positioning control unit of the train judges whether the first transponder information processing unit BPU fails, and if the first BPU is working normally, then receive the feedback sent by it from the ground transponder Otherwise, receive the address information sent by the second BPU in the second speed measuring and positioning control unit.

[0029] The embodiment of the present invention includes the first speed measurement and positioning control unit and the second speed measurement and positioning control unit at both ends of the train and having the same physical structure. Each speed measurement and positioning cont...

Embodiment 2

[0075] Figure 5 The system of train speed measurement and positioning based on network distributed redundant architecture provided by Embodiment 2 of the present invention, such as Figure 5 As shown, the system mainly includes: a first speed measurement and positioning control unit and a second speed measurement and positioning control unit which are arranged at both ends of the train and have the same physical structure;

[0076] Wherein, each speed measuring and positioning control unit includes: a central processing unit CPU, a speed sensor information processing unit SPU, a transponder information processing unit BPU, an axle speed sensor OPG and a radar speed measuring sensor RD; The output end is connected; The SPU input end is connected with the output end of OPG and RD;

[0077] The first SPU in the first speed measurement and positioning control unit is connected to the second SPU in the second speed measurement and positioning control unit through the first RS485 ...

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Abstract

The invention discloses a train speed measurement and location method and a train speed measurement and location system based on a network distributed redundancy framework, wherein the method comprises the step of concurrently operating a first speed measurement and location control unit and a second speed measurement and location control unit having the same physical structure at the head end and the tail end of a train to acquire and display a final result; the information of train speed and location is measured through a combination manner, so that the measurement accuracy is effectively improved; and on the other hand, the information of sensors at the head end and the tail end of the train can be shared by means of redundancy network without increasing the speed measurement and location sensor, and the reliability of the system is improved.

Description

technical field [0001] The invention relates to the field of urban rail transit, in particular to a method and system for train speed measurement and positioning based on a network distributed redundant architecture. Background technique [0002] The train control system is an important facility for urban rail transit to ensure driving safety, improve transportation efficiency and operation management level. Among them, the train speed measurement and positioning subsystem is a key component of the train control system, and its main task is to provide real-time train speed and position information to the train control system. [0003] At present, most domestic and foreign urban rail transit vehicle speed measurement and positioning systems use a single positioning method, but its structure is simple, the availability and accuracy of speed measurement and positioning are low, and it is only suitable for signal systems with fixed block areas. [0004] With the rapid and comfo...

Claims

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Application Information

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IPC IPC(8): B61L25/02
Inventor 李博郜洪民尹逊政贾学祥李亮王芃孟军陈宁宁徐杰贾鹏
Owner GUANGZHOU METRO GRP CO LTD
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