基于DSP与CPLD的电能质量无缝分析技术实现

Seamless sampling and analyses technique based on DSP and CPLD

本文提出了基于DSP和CPLD实现的电能质量无缝采样分析技术,并对该技术的硬件和软件结构进行了阐述,着重介绍同步无缝采样和分析的实现。该技术运用FIFO作为数据缓存区,存放A/D采样的数据,并采用DSP的DMA(直接储存器寻址)方式在不占用CPU的情况下传输数据,从而实现采样与数据处理的同步进行,完成了对多路信号的无缝采样和分析处理。本文还对电能质量监测系统的功能做了简要介绍。

This paper presents the seamless sampling and analyses technique based on DSP and CPLD,and introduces it's structure of hardware and software.The theory and the principle of its functional modules are discussed in detail.The FIFO is used as data cache which store the data from the A/D,and using the DMA to transfer the data stored in FIFO, this needn't disturb the CPU.Implementing those techniques make the sampling and data analyses in the same time.So we succeed in seamless sampling and analyses multi-input circuit. This paper although introduces the function of power quality monitor.