基于单片机的低频任意信号发生器

以单片机为核心设计了一个低频函数信号发生器。信号发生器采用数字波形合成技术，通过硬件电路和软件程序相结合，可输出自定义波形，如正弦波、方波、三角波及其他任意波形。波形的频率和幅度在一定范围内可任意改变。介绍了波形的生成原理、硬件电路和软件部分的设计原理。介绍了单片机控制D／A转换器产生上述信号的硬件电路和软件编程、DAC0832D／A转换器的原理和使用方法、AT89C52以及与设计电路有关的各种芯片、关于产生不同低频信号的信号源的设计方案。该信号发生器具有体积小、价格低、性能稳定、功能齐全的优点。

Arbitrary Waveform Low Frequency Signal Generator Based on Single-chip Microprocessor

A low frequency signal generator for function of arbitrary shape was designed,based on the application of single chip.Multiple techniques of digital waveforming were adopted.Through hardware circuit and software program,the signal generator can output user defined waveform,such as sine,triangle,square,saw-tooth shape,etc.The frequency and amplitude value of the waveform can be changed freely.The principle of the wave generation,hardware circuit and software design is presented.This paper briefly introduces ...