一种航电任务系统的关键节点双机备份机制  

A mechanism relates to dual-machine backup of the key nodes in avionics task system

作　　者：杨威[1] 李姗 常磊 Yang Wei;Li Shan;Chang Lei(Aeronautics Computing Technique Research Institute,Xi’an Shaanxi,710065)

机构地区：[1]中航工业西安航空计算技术研究所

出　　处：《电子测试》2020年第4期40-42,共3页Electronic Test

摘　　要：为解决航电任务系统的关键节点在系统运行过程中的可靠性和冗余性问题,设计了四种硬线信号和双机切换策略并应用于航电任务系统。通过对自身硬件状态、电源供电状态、主网络通信状态、专用网络通信状态的研究和分析,给出了硬线信号的连接方法、设置时机和条件,从系统管理软件初始化过程和运行过程的角度给出了两种情况下的双机备份主备切换策略。该机制满足了航电任务系统关键节点的热备份主备切换,提高了系统的可重构性和安全性。In order to solve the problem of reliability and redundancy of key nodes in avionics task system, four hardline signals and dual switching strategies are designed and applied to avionics task system. Based on study and analyze its own hardware status, power status, the main network state of communication, the private network state of communication, the connection method, setting time and conditions of hard line signal are given, further, in the view of the initialization process and running process of the system management software, the dual-machine backup and main/backup switching strategies are given. This mechanism can satisfy the main/backup switching in warm backup process of the key nodes in avionics task system, and then it improves the reconfiguration and security of the system.

关 键 词：双机备份 主备切换 硬线信号 

分 类 号：V243[航空宇航科学与技术—飞行器设计]