Main-standby voting switching method and system

Abstract

The invention provides a main-standby voting switching method and system. The method comprises the following steps: determining a first execution host, a second execution host and a third-party arbitration host; wherein the first execution host is an active requester, the second execution host is a passive requester, and the first execution host, the second execution host and the third-party arbitration host are in pairwise communication through a dual-network independent communication mode or in pairwise communication through a single-network communication mode; if the first execution host and / or the second execution host are / is in the power-on state, main and standby execution hosts are determined based on a main and standby power-on voting judgment algorithm; and if the first execution host and the second execution host are in the running state, determining the main and standby execution hosts based on a main and standby running voting judgment algorithm. The main and standby units and a third-party arbitration mechanism are designed, so that the main and standby voting between the units during power-on and operation is realized, the seamless automatic switching function is realized when a fault occurs, and the zero probability of a double-main event is realized on the basis of ensuring the availability.

Description

technical field [0001] The invention relates to the technical field of rail transit computers, in particular to a method and system for switching between active and standby voting. Background technique [0002] With the development of computer technology, the current dual-machine hot standby computer interlocking has been widely used, and the technology is basically mature. However, with the development of high-speed railway construction, higher requirements have been put forward for the safety and reliability of computer interlocking, and computer interlocking technology needs to be greatly improved on the basis of dual-machine hot backup to adapt to the high-speed railway. Signal control requirements. Recently, a new redundant technology has been promoted and applied in the computer interlocking system. , network communication and other aspects have injected brand-new design ideas and design methods, especially to make regional computer interlocking and dispatching centr...

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a method and system for master-standby voting switching, which are used to solve the defects in the prior art that hardware costs need to be increased when dual-machine master-standby voting is implemented, and dual-master faults are prone to occur.

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