基于THS1206的电能质量数据采集实现

Realization of the Power Quality Data Collection Based on THS1206

电能质量数据采集系统主要包括:主控电路、互感器电路、信号采集与调理电路及人机交互电路。本文主要介绍其中的信号采集与调理电路,由于信号采集电路中谐波电压值相对标准电压值较小,同时为了保证可以准确采样到高次谐波信号,用到的A/D不仅要求采样精度较高且转换速度要快。本文选用了TI公司生产的型号为THS1206的12位4通道高速A/D,这样既满足了电能质量检测中的数据精度要求,同时也满足了测量速度的要求。

Power quality data acquisition system mainly includes master control circuit, transformer circuit, signal acquisition and regulate circuit, and the human-computer interaction circuit. This paper mainly introduces the signal acquisition and regulate circuit. While the harmonic voltage is smaller than standard voltage value, in order to guarantee the accuracy of sampling the higher harmonic signal, A/D is required with both high sampling accuracy and quick the converting speed. This paper uses TI company＇s production THS1206 12 position 4 channel high speed A/D which can satisfy the accuracy requirement and the measure speed cequirement in power quality detection.