基于单片机的交流电压谐波分析仪硬件设计  

The Hardware Design of Alternating Voltage Harmonic Analysis Base on MCU

作　　者：黄丽霞[1] 

机构地区：[1]宁德师范学院物理与电气工程系,福建宁德352100

出　　处：《佳木斯大学学报（自然科学版）》2013年第2期249-252,共4页Journal of Jiamusi University：Natural Science Edition

摘　　要：介绍了一种交流电压谐波分析系统的硬件设计方法,采用电压互感器从交流电网获得电压信号,该电压信号一路送入AD574输入端,另一路经过波形转换电路产生一个供倍频锁相电路使用的信号,经过倍频电路处理后输出一个32倍频方波.系统采用了液晶屏幕显示,使显示数据精度较高,具有一定的实用价值.This paper introduced a design method of hardware system for AC voltage harmonic analysis The voltage signal, which was received by the voltage transformer from the AC grid, was divided into two parts one was sent to the AD574 input end, and the other was used to generate a signal through a waveform conversio n circuit for the phase - lock doubling frequency circuit. After doubling frequency eircuit＇s processing, a 32 - time frequency square wave was output. The system adopted a high precise LCD screen to display the data, which has a certain practical value.

关 键 词：单片机 锁相电路 谐波分析 液晶显示 

分 类 号：TN46[电子电信—微电子学与固体电子学]