机载计算机中几种常用总线的比较

Several Regular Bus of Compare in Airborne Computer

航空电子系统中的计算机系统属于一种分布式结构的计算机系统,机载计算机模块间通过总线相互连接,传输消息。由于系统的性能决定了选用何种总线与本文根据机载计算机特殊的应用环境,对常用的LBE、VME、PC I总线作以比较。本文简要介绍了航空电子系统的发展历史,同时就这几种总线的结构组成和各自时序特点,给出了用于各总线的接口模块与CPU模块间进行通讯的双口存储器的控制信号译码,所列接口译码信号都曾应用于各种机载计算机中,实现了预计的功能并通过了各种实验验证。

Aviation of electric system is a kind of distributed computer system, airborne computer of modules are connected bus, transfering messages . For system of capability determines bus. In virtue of airborne computer is used special environment, LBE bus, VME bus, PCI bus are compared . The article introduces histroy of Aviation of electric system.. By the bus of framework and virue of time, the article give the coding of controlling singals of Dram . The coding have proved that the solution is correct in all kind of test.