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Method for estimating reliability of ATP (Automatic Train Protection) system of CTCS-3 (Chinese Train Control System of Level 3) based on dynamic fault tree

A dynamic fault tree and reliability technology, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve the problems of time-consuming accuracy, cumbersome reliability evaluation methods, etc. simple effect

Inactive Publication Date: 2014-07-30
LANZHOU JIAOTONG UNIV
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Problems solved by technology

[0009] The purpose of the present invention is to provide the CTCS-3 grade ATP system reliability assessment method based on dynamic fault tree, solves the existing CTCS-3 grade ATP system reliability assessment method process loaded down with trivial details, time-consuming and the problem of low accuracy rate

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  • Method for estimating reliability of ATP (Automatic Train Protection) system of CTCS-3 (Chinese Train Control System of Level 3) based on dynamic fault tree
  • Method for estimating reliability of ATP (Automatic Train Protection) system of CTCS-3 (Chinese Train Control System of Level 3) based on dynamic fault tree
  • Method for estimating reliability of ATP (Automatic Train Protection) system of CTCS-3 (Chinese Train Control System of Level 3) based on dynamic fault tree

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[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 Shown is the structure block diagram of the existing CTCS-3 level ATP system, in which the C3 control unit 2 is used in the C3 control mode. C2 control unit 1 is used in C2 control mode.

[0027] The CTCS-3 level ATP system adopts a distributed structure and a modular design to ensure that the failure of a module only affects the output of this module, so that the backup function will not be affected by other modules. Among them, the C2 control unit, TCR (track circuit information receiving module), C3 control unit, wireless management module, train interface module, PROFIBUS bus, radio station, and GSM-R antenna adopt dual system hot standby redundant structure, and BTM and DMI adopt dual system It is a cold standby redundant structure.

[0028] The specific steps to evaluate the reliability of CTCS-3 ATP system us...

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Abstract

The invention discloses a method for estimating the reliability of an ATP (Automatic Train Protection) system of CTCS-3 (Chinese Train Control System of Level 3) based on a dynamic fault tree. The adopted technical schemes comprises the following steps: building a dynamic fault tree model that the ATP system of the CTCS-3 fails and a dynamic fault tree model that a master control unit fails according to the ATP system of the CTCS-3; judging the independence of each sub-tree module by adopting a depth-first leftmost traversing algorithm search model; solving a sub-tree by adopting a markov model of a repairable system, and obtaining a reliability index of the sub-tree; synthesizing solving results of the sub-tree module by combining a layered iteration method so as to obtain the reliability index of the system; estimating the system by adopting the system reliability index. The dynamic fault tree-based method has the benefits that the characteristics of the system can be described better by adopting the dynamic tree fault method which can express the dynamic failure process of the system; the estimating process is simple; the accuracy rate is high.

Description

technical field [0001] The invention belongs to the technical field of railway signal systems, and relates to a CTCS-3 ATP system reliability evaluation method based on a dynamic fault tree. Background technique [0002] Dynamic Fault Tree (DFT): A method for analyzing the reliability of systems with dynamic random fault characteristics. CTCS-3 level ATP system (the automatic train protection of chinese train control system-3, theATP of CTCS-3): an on-board subsystem used to monitor, protect and control the safe operation of high-speed trains in China's train operation control system. Reliability evaluation (reliability evaluation, RE): evaluate the reliability of the system by solving the key indicators that characterize the reliability of the system. [0003] In recent years, with the opening and operation of high-speed railways, in order to ensure the safe operation of high-speed trains and the requirement of short tracking intervals between trains, Chinese train control...

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Application Information

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IPC IPC(8): G06F19/00G06F17/30
Inventor 张友鹏张文韬石建强车玉龙赵斌李军莉李小凡王文斌
Owner LANZHOU JIAOTONG UNIV
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