时间触发航空电子系统的软件架构研究  

Research on Software Architecture of Time Triggered Avionics System

作　　者：段海军[1] 郭勇[1] 孙志颖 张峰[1] DUAN Hai-jun;GUO Yong;SUN Zhi-ying;ZHANG Feng(Xi′an Aeronautics Computing Technique Research Institute,AVIC,Xi′an 710068,China)

机构地区：[1]航空工业西安航空计算技术研究所,陕西西安710068

出　　处：《航空计算技术》2021年第2期88-92,共5页Aeronautical Computing Technique

基　　金：国家重点研发计划项目资助(2017YFB13001104);工信部民机科研项目资助(MJ-2017-S-39)。

摘　　要：针对航空电子系统数据量大、任务复杂、可靠性要求高等特点,分析了传统的航空电子系统的软件架构优缺点,将任务按照运行过程划分为数据I/O输入、数据预存取、数据解算、解算结果存储、解算结果I/O输出等阶段,依据时间片对任务的各个阶段进行调度,确保了系统的稳定性。叙述了系统的工作机制,给出了时间触发航空电子系统软件架构的基本模型。实验结果和理论分析表明,时间触发航空电子系统软件架构的细颗粒调度比传统以进程为单位调度的软件架构具有更好的确定性,在稳定性和可靠性方面有很大的提高。In view of the characteristics of avionics system,such as large amount of data,complex tasks and high reliability requirements,this paper analyzes the advantages and disadvantages of traditional avionics system software architecture.Tasks are divided into data I/O input,data pre-access,data solution,solution result storage,solution result I/O output and other stages according to the operation process.Tasks are scheduled according to time-slice to ensure that The stability of the system is obtained.The working mechanism of the system is described,and the basic model of time triggered avionics system software architecture is given.Combined with the experimental results and theoretical analysis,it is shown that the fine particle scheduling of time triggered avionics system software architecture has better certainty than the traditional process based scheduling software architecture,and greatly improves the stability and reliability.

关 键 词：航空电子系统 任务调度 时间片调度 软件架构 高可靠性 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]