星载软件在轨重构系统设计方法  

Design Method of Spaceborne Software On-orbit Reconfiguration System

作　　者：陈昌麟 王旭[1] 李娟[1] 曹一荻 CHEN Changlin;WANG Xu;LI Juan;CAO Yidi(DFH Satellite Co.,Ltd.,Beijing 100094,China)

机构地区：[1]航天东方红卫星有限公司,北京100094

出　　处：《航天器工程》2024年第4期71-75,共5页Spacecraft Engineering

摘　　要：针对目前卫星研制任务需求多变且部署周期更短带来的对软件在轨重构升级的迫切需求,文章提出了一种星载软件在轨重构系统设计方法。基于RS422总线和CAN总线,设计了重构系统的数据接收和多通道数据分发架构。通过协议层设计,提出了进行重构数据丢帧补发的方法,重构系统依据协议对收到的数据帧进行校验、缓存,再分发给软件重构目标单机。整个流程各个环节均有校验措施设计以保证软件重构的可靠性。通过试验验证表明:该系统可满足卫星星上软件重构的需求,可以为星载软件在轨重构系统设计提供参考。In response to the urgent demands for software refactoring and upgrade on-orbit,it is brought about by the changeable development task requirements and the shorter deployment cycle.A spaceborne software on-orbit reconfiguration system design scheme is proposed in this paper.Based on RSRS422 bus and CAN bus,data receiving and multichannel data distribution framework of reconfiguration system is designed.Through protocol layer designing,proposes the method of missed data resending,the software reconfiguration system verifies and caches on the received data according to the protocol,then distributes to the target equipment needed software refactoring.Every link has check measures to guarantee the reliability of software refactoring.The experiment demonstrates the system can satisfy the command of software reconfiguration on satellites and provides reference for the reconfiguration of satellite software system design.

关 键 词：在轨重构 软件升级 CAN总线 RS422总线 

分 类 号：V433[航空宇航科学与技术—航空宇航推进理论与工程]