Hardware platform of safe computer 2-out-of-3 voting method

Abstract

The invention discloses a hardware platform of a safe computer 2-out-of-3 voting method, comprising three independent CPU modules, I / O modules and communication modules, wherein the interior of each I / O module comprises three mutually independent channels, the '2-out-of-3' hardware voting is completed in the interior, each I / O module and each communication module are combined into a thermal standby by a main module and a spare module, the communication of the three CPU modules adopts a high-speed serial bus based on LVDS, the communication of each CPU module and each I / O module adopts an independent CAN bus, the communication of each CPU module and each communication module adopts the Ethernet, the communication of the platform and the exterior is realized by two superfluous Ethernets of the communication modules, and all the modules have hot plug function. The hardware platform of the safe computer 2-out-of-3 voting method ensures 2-out-of-3 voting real-time high-speed data exchange,improves reliability, usability, maintainability and expandability under the condition of a compact structure and has wide popularization and application prospects.

Description

technical field [0001] The invention relates to a computer fail-safe method, in particular to a "2 out of 3" fail-safe computer hardware platform. Background technique [0002] The monitoring system of important key equipment in the fields of rail transit, aviation and electric chemical industry has high requirements for reliability, safety and maintainability. The reliability of the system ensures that the system can run reliably without failure for a long time, and the safety guarantees that any part of the system will be directed to the safe side in the event of a failure, that is, its consequences will not cause danger or major losses to the monitoring and control objects, while maintainability is Under the condition of ensuring the normal operation of the system, maintain and replace the faulty parts of the system. The core of this high-reliability, high-security and high-maintainability monitoring system is a fail-safe computer, and the hardware platform of the fail-s...

AI Technical Summary

Problems solved by technology

Because the CPU module of this structure is installed in the same cage regardless of whether it is an independent module (one CPU module) or an integrated module (three CPUs and one module), and the input and output modules are generally integrated modules. form, if one of them fails, it is difficult to replace and repair in time without affecting the normal operation of the system

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