双口RAM在多CPU小卫星综合电子计算机中的应用

Application of Dual-Port RAM in Multi-CPUs Synthesized Electronic Computer of Small Satellite

摘要:

结合小卫星综合电子系统可靠性、实时性及数据共享的特点,分析双口RAM芯片的特性,提出了基于双口RAM的多CPU架构星载综合电子计算机应用设计方案；设计用双口RAM实现多CPU之间高速、可靠的并行数据通信和共享,使整个系统软硬件设计简单,数据充分共享,可靠性较高；给出基于双口RAM多CPU架构综合电子计算机的应用实例和实验分析,实验结果表明,该系统运行稳定可靠,具有很高的实时性和数据处理能力。

Abstract:

Combining with the characters of reliability, real-time and sharing-data of the synthesized electronic system of small satellite, Dual-Port RAM’s characters are analyzed. A precept of using Dual-Port RAM to share data among Multi-CPU is put forward, and using Dual-Port RAM to carry out high-speed and reliable parallel communication and sharing data is designed. The whole system’s software and hardware is easy to design with fully exploiting resource and higher reliability and real-time feature. An application and test analysis of Dual-Port RAM’s Multi-CPU system in the synthesized electronic computer is offered, the results show that the system runs stably and reliably, which have highly real-time and data processing capacity.