航天器用实时操作系统设计

针对航天器在应用实时操作系统时的特殊需要,设计了航天器用实时操作系统的总体设计方案及内核;总体设计中,将操作系统分为板卡级驱动层、系统内核层、接口层三个层次,并确定了满足航天器任务的最简需求与各层的关系;在内核设计中,设计了双向链表管理器、多任务调度管理器、时钟管理器、消息队列管理器、中断管理器,并在其中体现了最简设计的思想;最后,对航天器用实时操作系统的可靠性设计思路进行了描述;此操作系统目前已应用多个航天器中。

A Type of Real-Time Systems Designing Which Applied in Aeroships

According to special needs when real-time operating system got application in spacecraft,the paper designed the scheme and kernel of real-time operating system using on spacecraft.In this design,the real-time operating system is divided to three levels,Board Support Package,kernel and interface.Then,the relation between these levels and the simplest needs for spacecraft mission is defined.The kernel section planed double lined list,Multi task scheduling,Timer management,massage queue,interrupt management.In which the simplest designed idea was reflect.Finally,Reliability design opinion in this operating system was formulated.The Real-Time systems designed on this paper has applied to several spacecraft.