基于单片机的智能频率计系统研究  

Research on Intelligent Cymometer System Based on Singlechip

作　　者：刘志刚[1] 汪小志[1] 田磊[2] 

机构地区：[1]河南理工大学电气工程与自动化学院 [2]河南工业职业技术学院电气工程系,河南南阳473009

出　　处：《江苏电器》2008年第8期13-16,共4页

摘　　要：介绍了以AT89C2051单片机为核心的智能频率计的设计,利用单片机内部的定时(计数)器完成待测信号周期(频率)的测量。对系统的信号预处理电路、控制电路和显示电路三大部分进行了研究,采用RS232接口电路,利用VB6编程语言实现了PC机串口接收控制程序。系统解决了传统频率计结构复杂、稳定性差、精度不高的弊端,而且性能也有较大提高,实现了设计要求。Introduction was made to the design of intelligent cymometer taking AT89C2051 singlechip as the core, using singlechip internal timer （counter） to fulfill measurement of signal cycle （frequency） to be measured. Research was made to signal pre-processing circuit, control circuit and display circuit, adopting RS232 interface circuit and using VB6 programming language to realize PC serial receiving control program. The system solved the defects of traditional cymometer with complex structure, bad in stablity and low in accuracy and the performance is raised greatly so as to achieve the requirements of design.

关 键 词：单片机 智能频率计 计数法 定时法 串行通信 

分 类 号：TM935.13[电气工程—电力电子与电力传动]