小卫星星务计算机系统总线的研究与实现

Development and Implementation of communication bus on small satellites' house keeping computer

目前微小卫星星务计算机系统通信总线面临了一系列新的要求 ,而在这一领域应用的几种串行通信总线都不尽如人意 .CAN(ControllerAreaNetwork)总线结构灵活 ,可靠性高 ,比较适合小卫星 .针对小卫星运行环境单粒子效应较多的情况 ,为TS - 1小卫星设计的“基于CAN的双冗余系统总线”采用二模冗余的方法进一步提高了系统总线可靠性 ,是一种高性能、高可靠、低价位的系统总线设计方案 .在CAN的多机通信模拟平台上进行的一系列试验验证了“基于CAN的双冗余总线设计方案”

Controller Area Network (CAN) is more suitable for small satellites because of its no host structure, high performance and low cost. According to the fact that there are many single events in the orbits of small satellites, a 'dual bus redundancy scheme based on CAN' was implemented on TS-1. A series of experiments conducted on an experimental platform with CAN communication proved the feasibility of the dual bus redundancy scheme based on CAN.