二乘二取二系统的同步表决安全机制研究  

Research on Synchronization Mechanism in Double 2-out-of-2

作　　者：陈梅[1] 汪月乾 张永贤 郭凯 

机构地区：[1]华东交通大学信息工程学院,南昌330013 [2]华东交通大学电气与自动化工程学院

出　　处：《单片机与嵌入式系统应用》2018年第3期10-12,18,共4页Microcontrollers & Embedded Systems

基　　金：江西省教育厅科学技术研究项目(编号:GJJ160496);华东交通大学校立科研基金资助(编号:14DQ06)

摘　　要：二乘二取二是一种高安全、高可靠性的安全计算机结构,详述了二乘二取二系统中的主备、主从关系,基于任务级的同步表决方法。在考虑时钟漂移情况下,分析了主从并发式和从机等待式同步表决方式的特性,提出了主从并发式用于主备同步,从机等待式用于主从同步的同步机制方案。搭建了该同步机制方案的二乘二取二平台,测试表明,该同步机制能很好地实现同步表决任务。The double 2-out-of-2 is a kind of safety computer architecture with high safety and reliability.The relationship of hot-standby and master-slave,method of synchronization and voting based on synchronization of task layer are discussed in the paper.In case of clock drift,the characteristics of two synchronization mechanisms named master-slave in parallel and slave response are analyzed.A synchronization voting program is proposed,in which master-slave in parallel mode is used in hot-standby and slave response mode is used in master-slave.A double 2-out-of-2 hardware platform is built to verify the synchronization voting program.The experiment results show that the proposed program can run correctly.

关 键 词：二乘二取二 同步机制 冗余系统 

分 类 号：TP302.8[自动化与计算机技术—计算机系统结构]