基于单片机和CPLD的数字相位测量仪设计  

Design of Digital Phase Measuring Apparatus Based on MCU and CPLD

作　　者：姚晖[1] 李伟[1] 季上满[1] 沈科杰[1] 胡娅[1] 

机构地区：[1]浙江理工大学信息电子学院,浙江杭州310018

出　　处：《工业控制计算机》2010年第1期89-90,共2页Industrial Control Computer

摘　　要：介绍了数字式低频相位测量仪的组成、工作原理,提出了一种基于单片机和可编程逻辑器件的低频数字相位测量仪的设计方案。系统以AT89C52单片机小系统及Altera公司的EPM7128SLC84-15 CPLD为核心,对频率为20Hz到20kHz的正弦波信号实现精确测频、测相,并用以8279为核心的键盘显示电路给以显示。还对测周误差进行了改进分析。该设计将单片机和高速可编程逻辑器件有机连接在一起,其有处理速度快、稳定性高,误差较小的优点。This paper introduces the systematic composition,the operation principles of the low frequency digital phase measuring apparatus and proposes a design method based on MCU and CPLD.This system whose core is AT89C52 and EPM7128SLC84-15 which produced by Altera company,can precisely measure the frequency and phase of sine signal from 20Hz to 20kHz.The result can be displayed through Keyboard and Display Circuit which based on 8279.Further,this paper analyses the error and the method on how to decrease the error.

关 键 词：相位测量 单片机 CPLD 频率 误差 

分 类 号：TM935.2[电气工程—电力电子与电力传动]