基于ARM和Linux嵌入式平台的故障录波器通信接口设计

The Communication Interface Design of Fault Recorder Based on ARM and Linux

针对传统的微机型故障录波器在硬件配置、成本及可靠性上的问题,设计了一种以ARM和DSP为系统硬件,Linux操作系统为软件平台的故障录波器结构,DSP用于执行计算密集型操作,ARM平台完成终端控制以及外部通信,形成相对精简优化的软硬件结构,详细研究了主机口HPI技术,实现了双核之间的命令控制和高速数据通信。

To solve some problems of hardware configure, cost and reliability based on the traditional microcomputer-based fault recorder, a scheme for the fault recorder which takes ARM and DSP as system hardware, Linux as system software is presented. DSP is used for high-speed data operation, and the ARM platform completes terminal control and communication. Then a simplified structure in software and hardware comes out. HPI technique is studied in detail in order to meet the demand of control and high-speed data communication between the two kernels.