摘要
设计并实现了一种基于高精度数据采集芯片AD7656和定点DSP芯片TMS320F2812的实时电能质量监测数据采集系统。详细分析了AD7656的工作原理,在本系统的前端对待测的高电压和电流信号进行了信号转换和滤波处理,实现了AD芯片和DSP芯片之间并行的连接方式。利用DSP定时器中断来触发AD采样同时利用DSP的外部中断完成采样数据的读取,软件设计采用了模块的方法编程实现。实验测试验证了系统的可行性和精确性,并很好地满足了电能质量监测系统对数据采集的需求。
An excellent performance of power quality data acquisition system based on high precision AD chip AD7656 and fixed point DSP chip TMS320F2812 was designed and implemented. Working principle of AD7656 and the parallel connection between AD and DSP were introduced detailedly, while high voltage and current input signal have been transformed and filtered in the front of the circuit system. With timer interrupt of DSP triggering AD sampling and data reading completed in external 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
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第3期69-72,共4页
Power System Protection and Control
基金
中国科学院知识创新工程重要方向性项目(KJCX3.SYW.N4)
