ARM9高速实时多任务数据采集系统的算法优化

Intelligent High-speed Real-time Multi-tasking Data Acquisition System Algorithm Based on ARM9

针对高速实时多任务数据采集系统的高速性、实时性、并发性、安全性要求,提出了基于ARM9和μC/OS-II操作系统的多频道数据采集系统的智能化设计方案。实现了任务优先级动态调度、动态设置、系统工作参数动态设定。针对低速外围设备进行了系统工作时间优化,对软件关键区进行了必要的保护,提高了系统安全性,改善了内部任务同步性,保障了各个通道的实时并发性。对数据采集系统各个通道的极限工作频率进行了实验室测定,对相关设计电路进行了简要说明。

This paper introduces an intelligent design for multi channel real-time data acquisition system based on ARM9（S3C2440A） and μC/OS-II Operating system, meeting the requirements of high-speed, real-time and simultaneity. Task priority dynamic scheduling and system parameter dynamic settings are realized. System time optimization is made for low speed peripheral devices and necessary protection for critical sections of the software is given. The limit frequency of data acquisition system in the laboratory is measured and a brief description of the design circuit is given.