基于数字波形合成技术的标准工频信号源  

Standard normal signal source by digital wave synthesis technology

作　　者：石明慧[1] 

机构地区：[1]苏州大学应用技术学院,江苏苏州215006

出　　处：《苏州大学学报（自然科学版）》2004年第4期45-50,共6页Journal of Soochow University(Natural Science Edition)

基　　金：苏州市科技发展计划(工业)项目资助(SG0226)

摘　　要：采用程控数字波形合成技术,通过单片微型计算机系统实现了工频标准信号源.首先通过软件运行算出所需波形的数据,再利用RAM数据读出技术经D/A转换后输出,最后经平滑滤波及相应放大器放大后得到工频电压、电流波形.硬件以AT89C52单片机为核心,人机界面采用键盘设定和LCD显示,软件采用C51编程.The design method of normal frequency standard signal source, which utilizes program control digital wave synthesis technology and achieved by microcontroller was given. Firstly, which gets the data that wave type needed by the calculation of software. Secondly, which utilizes D/A to achieve the conversion between digital and analogical. Thirdly, which outputs normal frequency voltage and current wave type by smoothness fliter and amplifier. The AT89C52 microcontroller is the hardcore of the hardware. The interface between users and computer utilizes keyboard enactment and the LCD display. The software utilizes by C51.

关 键 词：C51编程 单片微型计算机 键盘 RAM LCD显示 数据 硬件 数字波形合成 工频信号 工频电压 

分 类 号：TM774[电气工程—电力系统及自动化] TP368.1[自动化与计算机技术—计算机系统结构]