摘要
提出将具备时间触发特征的新一代车载总线FlexRay引入小卫星星上电子系统,分析了FlexRay总线访问机制、数据帧结构、容错特性、网络时间同步等对星载应用的适应性,并给出基于该总线的星载网络设计及应用思路,对星载网络拓扑结构、节点信息传递方式、总线通信应用协议、网络节点实现等进行了初步设计,可为该总线的星载应用提供一定的技术参考。
Next generation automotive bus FlexRay is introduced into satellite avionics in this paper. The feature and adaptability of FlexRay for satellite avionics application is analyzed, which includes bus access mechanism, frame data structure, error tolerance and network time synchronization. Satellite avionics networks architecture, information exchange mode and communication application protocol based on FlexRay are presented, which can be as the reference for future application of FlexRay bus in satellite avionics.
出处
《航天器工程》
2012年第6期80-86,共7页
Spacecraft Engineering
基金
国家重大科技专项工程
关键词
星载总线
时间触发
FLEXRAY总线
星载应用
on-board avionics bus
time-triggered
FlexRay bus
satellite avionics application
