Apparatus and method of synthesis fault detection for main-spare taking turns

Abstract

The invention discloses a comprehensive fault detecting device and a method for shifting a main computer and a standby computer, and relates to the application communication field. The invention aims at providing comprehensive detection in main-standby shifting condition. The main computer and the partner computer of a main-standby shifting comprehensive fault detecting device are symmetric in structures. Each of the main computer and the partner computer respectively includes a CPU, a programmable control circuit module which is connected with the CPU through a CPU address / data / control bus, a communication interface module, a hardware reset register, and a software reset register; the programmable control circuit module contains a summation meter inside. A main-standby shifting comprehensive fault detecting method includes the steps of initializing a programmable control circuit and the application software; conducting state detection and data synchronization on the main computer andthe partner computer periodically, and determining whether a mark in the hardware reset register and the software reset register is read according to the detection result. The invention is applicablefor an important working unit which needs the communication and control bus distribution system with main-standby shifting function.

Description

technical field [0001] The present invention relates to the field of communication, in particular to a distributed system using communication and control bus, in which important working units need to have the function of main-standby switching. Background technique [0002] In a distributed system with communication and control buses, it is often necessary to provide hot backup for more important units (the so-called hot backup means that the backup unit is in the power-on state and can automatically enter the working state, replacing the function of the failed unit without affecting the normal work of other units in the system). [0003] Patent No. 1494228 talks about a method and circuit for realizing active / standby switchover of a single board. The state monitoring is set on the local board and the opposite board respectively, and the state information of the opposite board is received, and the state of the single board is adjusted according to the state of the opposite b...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, in order to realize the rapid diagnosis and processing of the active / standby switchover, it often requires a great modification of the entire system architecture, especially the backplane and other units. The realization of hot backup often brings business interruption and cannot be done automatically. To achieve flexible migration between working state and standby state, the switchover cannot be quickly realized on the basis of data synchronization between the active and standby states, and often affects the work of other units in the system, or requires changes to the software and hardware structures of other units

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