基于JetsonTX2处理器的星载操作系统设计与验证  

Design and Verification of On-board Operating System on Jetson TX2 Processor

作　　者：赵丽 李超[1] 王冰 田帅虎 林博轩 徐婧瑶 ZHAO Li;LI Chao;WANG Bing;TIAN Shuaihu;LIN Boxuan;XU Jingyao(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》2022年第5期51-59,共9页Spacecraft Engineering

基　　金：国家自然科学基金“天基信息网络在轨处理与实时传输综合集成演示验证”(91738302)。

摘　　要：面向高可靠、高性能、生态优良、自主可控的星载操作系统需求,文章基于英伟达人工智能升级版(Jetson TX2)处理器对Linux操作系统进行了空间环境下可靠启动、高速数据传输、智能应用框架的改进设计。在可靠启动方面,设计了Linux内核和文件系统4份冗余结构,实现了操作系统的可靠启动和数据自主恢复策略。在高速数据传输方面,开展了高速串行传输接口(PCIE)数据传输的双缓冲区设计,改进了高速接口数据的传输性能。在好用易用方面,设计了智能应用管理框架,实现了App上注及App全生命周期管理模式。经过在Jetson TX2硬件平台测试验证,结果表明:改进后的星载操作系统支持内核、文件系统故障情况的可靠启动及主动恢复,PCIE高速数据传输速率大幅提升,智能应用管理支持128种不同功能App上注及加载运行,可为天基高速计算系统应用设计提供参考。According to regulations and demands of spacecraft software infrastructure,this paper presents an improved design of the Linux operating system on Nvidia AI upgraded processor(Jetson TX2)for reliable startup,high-speed data transmission and intelligent application framework in space environment in order to fulfill the needs of high reliability,high performance,excellent ecology and autonomous controllable on-board operating system.In terms of reliable boot,a strategy which supports independent inspection startup and data recovery has been formulated for a multi-redundant operating system.Four redundant versions of the Linux kernel and the file system have been designed respectively.In terms of high-speed data transmission,the double buffer of high speed serial transmission interface(PCIE)data transmission is designed to improve the performance of high-speed data transmission.In terms of easy-to-use,management frameworks of the intelligent software applications which fullfillss program loading and life-time management modes is designed.The result of testing and verification on the Jetson TX2 showed that the improved on-board operating system supports reliable startup and autonomous recovery mechanism under kernel and file system failure.The transmission rate of the PCIE interface is increased greatly.The intelligent application management allows posting and running of 128 applications with different functions.The improved on-board operating system can provide reference for the application design of on-board high-speed computing system.

关 键 词：星载操作系统 Jetson TX2处理器 智能应用 LINUX操作系统 

分 类 号：TP302.7[自动化与计算机技术—计算机系统结构]