基于单片机的波形发生器  

Waveform Generator Based on MCU

作　　者：张弛 黄昊翀 李子萱 高华[1] 董爱国[1] ZHANG Chi;HUANG Haochong;LI Zixuan;GAO Hua;DONG Aiguo(China University of Geosciences,Beijing,100083 China)

机构地区：[1]中国地质大学,北京100083

出　　处：《科技创新导报》2021年第4期43-48,共6页Science and Technology Innovation Herald

摘　　要：波形发生器是电子电路中常用的实验器材,目前市面上的波形发生器存在价格昂贵的问题,本文基于AT89C51单片机开发了一种低成本波形发生器,用简便的算法通过定时器实现了对波频率的控制。通过中断实现频率的任意调节,使用DAC0832集成芯片进行数模转换,最后可以实现三角波、正弦波、方波和锯齿波的发生。能手动切换波形,任意调节频率,幅度可连续调节,输出波形清晰稳定,波形延迟低,方法精简,成本低廉,具有很好的实际应用价值。Waveform generator is an electronic circuit which is commonly used in the experimental equipment.The current waveform generator on the market is expensive.In this paper,a low-cost waveform generator is developed based on t he AT89C51 MCU.A simple a lgorithm works w ith t he t imer t o achieve control of t he wave frequency.By interrupting frequency adjusted and the use of analog-to-digital conversion DAC0832 integrated chips can f inally realize the triangle wave,sine wave,square wave,and sawtooth wave.It can manually switch waveforms at the same time,adjusted the frequency,amplitude of continuous adjustment,the output waveform is stable,clear waveform low latency.The method has good practical application value with compact and low cost.

关 键 词：单片机 波形发生器 定时器 频率调制 

分 类 号：TM935[电气工程—电力电子与电力传动]