一种在线加载的分布式星载计算机系统方案  

A Concept of Distributed On-board Computer System Based on On-line Bootloader

作　　者：侯亮[1,2] 张沛[1,2] 高升[1,2] 

机构地区：[1]北京空间飞行器总体设计部,北京100094 [2]空间智能机器人系统技术与应用北京市重点实验室,北京100094

出　　处：《航天器工程》2015年第6期79-84,共6页Spacecraft Engineering

摘　　要：结合在星载计算机系统中广泛采用的主从分布式体系结构,文章提出了一种基于在线加载机制的主从分布式星载计算机系统方案,其从节点计算机中仅存储引导程序,应用程序存放于主节点计算机中,在从节点计算机启动或复位后由主节点计算机通过总线网络将其应用软件进行加载。分析结果表明,此设计方案能够降低从节点计算机对程序存储区的需求,简化从节点计算机的设计,并可优化研制流程,在航天领域具有较好的应用前景。A concept of distributed on-board computer system based on on-line bootloader is proposed in this paper by thoroughly studying master-slave distributed architecture which has been widely utilized in satellites. In this architecture,the program memory of the slave node computer is only used as bootloader. The host node computer loads the application software stored in the memory through bus network after the slave node computer is turned on or reset. The method introduced in this paper has extensive application potentials for space missions because it can effectively reduce the demand for the program memory, simplify the design of the slave node computer, and optimize the development process.

关 键 词：引导程序 在线加载 主从分布式 星载计算机系统 

分 类 号：V446[航空宇航科学与技术—飞行器设计]