摘要
基于采用ARM11内核的S3C6410处理器,外扩高精度数据采集芯片AD7606,设计并实现了一种用于电能质量监测的高速同步数据采集系统。详细分析了AD7606以及PWM定时器的基本工作原理,采用并行接口模式作为ADC与S3C6410的数据传输,移植了Linux操作系统并实现了基于PWM和GPIO口的ADC驱动。实验测试结果表明,该系统在Linux环境下对ADC实现了精确定时,是可行的,能很好的满足电能质量监测中数据采集的需要。
A power quality data acquisition system based on high precision AD chip AD7606 and ARM S3C6410 embedded in real- time Linux kernel is designed and implemented. Working principle of AD7606 and the parallel connection between AD and ARM are introduced detailedly. Driver software for AD 7606 in Linux is designed and implemented. With PWM Timer triggerring AD sampling and data reading completed in Timer interrupt, the method of modularization is used for software design of this system. Feasibility and reliability of the system ware validated by experimental test, and the results showed that the data acquisition system can satisfy the demand of power quality analysis system.
出处
《微计算机信息》
2012年第10期95-96,213,共3页
Control & Automation
