基于单片机的信号发生器设计

The Design of Signal Generator Based on Singlechip

本文介绍了基于单片机设计的多功能信号发生器。波形发生器是一种常见的信号源,在电子电路及教学场合广泛应用。该信号发生器可通过单片机编程再通过数模转换电路,最后通过滤波可生成正弦波,锯齿波,三角波,矩形波四种波形。设计结构简单,容易实现。波形的频率可以通过按键进行调节,并通过LCD显示当前波形种类和频率。用proteus仿真并用示波器测量验证了设计可行性。

This paper introduces a muhi-function signal generator based on single chip microcomputer. Wavefoml generator is a common signal source that widely used in electronic circuits and teaching situations. The signal generator can be programmed by single chip microcomputer and then passing through the digital analog conversion circuit and filter circuit. Finally, the wavefoml of sine wave, sawtooth wave, triangular wave and rectangular wave can be generated. The design structure is simple and easy for implement. The frequency of the wavefoml can be adjusted by pressing the key, and the cmwent wavefoml type and frequency can be displayed by the LCD. The feasibility of the design is verified by using proteus and oscilloscope measurement