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A method for identifying active and standby redundant systems

A redundant system, active-standby technology, applied in transmission systems, electrical components, etc., can solve the problems of output conflict, potential safety hazards, and inability to determine whether the other party is normal between the main and standby machines, and achieve the effect of improving effectiveness.

Active Publication Date: 2022-05-31
BEIJING JIAODA SIGNAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main machine and the standby machine compete for power through the interlocking of electronic components or the order of communication. After the power struggle is successful, the main machine and the standby machine cannot determine whether the other party is normal, resulting in two or more main machines simultaneously obtaining the master control right in the system and outputting externally (dual Master or multiple masters) lead to output conflicts and make the execution of the external actuators chaotic, two or more masters have no master control to stop external output (dual standby or multiple standbys) resulting in no output and the working status of the external actuators is unknown, no matter It is dual-master or multi-master, double-standby or multiple-standby, all of which have security risks

Method used

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  • A method for identifying active and standby redundant systems
  • A method for identifying active and standby redundant systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: Active / standby identification

[0017] 1) Two or more series of train-controlled on-board equipment are completely independent, and all boards are inserted into different slots on the same backplane of the mainframe chassis, and communicate through the bus;

[0018] 2) During power-on initialization, the main control board reads the position information in the chassis according to the backplane settings, and the main control board reads the serial number of the board according to the position recognition module on the board. The serial number determines the A series or the B series; the board identification is realized through the backplane and the main control board;

[0019] 3) The main control board and other boards establish communication links;

[0020] 4) The main control boards obtain the sequence relationship of establishing links through the bus, locate the main and standby machines according to the position of the board and the serial number of the...

Embodiment 2

[0021] Embodiment 2: Working state redundancy judgment

[0022] 1) After confirming that the main control board of the main and standby machines outputs the vital sign signal and working status information through the port, the vital sign signal and working status information are redundant, so as to avoid the misjudgment caused by the information interruption of one of the signals due to line failure or interference Frequent switching of main and standby machines;

[0023] 2) Life signature signals and working status information include but are not limited to; sending a square wave of a certain frequency through GPIO (General-purpose input / output) or sending a normal working information frame through a serial port (including but not limited to SCI, CAN);

[0024] 3) The host sends the vital sign signal in real time, and simultaneously receives the vital sign signal sent by the standby machine in real time;

[0025] 4) The host sends the working status through the bus in real ...

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Abstract

In the method for identification of active and standby redundant systems of the present invention, two or more series of train control vehicle-mounted equipment are completely independent, and all boards are inserted into different slots of the same backplane of the main engine chassis, and communicate through the bus; the main control board It has the board identification function, and the board identification is realized through the backplane and the main control board; the main control board determines the main and standby machines according to the order in which the link relationship is established with other boards; the main control boards of two or more series Send vital sign signals to each other to indicate the working status of each main control board; when the main control board sends out vital sign signals, it indicates that its working status is normal, otherwise the working status is abnormal. The technical advantage of the present invention: based on the board identification method, the main and standby machines are determined according to the order in which the communication links are established, and the vital sign signal is added between the main and standby machines to judge the working status of the main and standby machines, so as to improve the effective identification of the main and standby machines sex.

Description

technical field [0001] The invention relates to a method for identifying the master and backup of a dual-machine redundant system based on a secure computer platform. Background technique [0002] At present, the train control on-board equipment has the function of dual or multi-machine master and backup redundancy, such as figure 1 As shown, the master machine and the standby machine obtain the master control by means of rights contention. The main and standby identification functions of the existing train control on-board equipment have the following shortcomings: [0003] The master and the standby machine compete for power through electronic components interlocking or communication sequence. After the power struggle is successful, the master and standby machines cannot determine whether the other party is normal or not, resulting in two or more master machines in the system simultaneously obtaining master control for external output (double Master or multiple masters) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L41/0663
CPCH04L41/0663
Inventor 祝君冬李义高俊强
Owner BEIJING JIAODA SIGNAL TECH