摘要
针对实验室低频信号源精度的不足,本文设计了一种基于STC89C52单片机的低频函数信号发生器。函数信号发生器包括人机交互模块、处理器模块、电源模块和波形产生模块。由MATLAB计算各种信号的采样点,获得采样点后,通过处理器模块输出数字量,再经过D/A转换电路进行数字量到模拟量的转换,然后经过放大电路对输出信号进行放大得到最终的输出波形。该函数信号发生器具有简单、实用、成本低、可靠性强的特点。
Due to the shortage of laboratory precision on low frequency signal source,this paper designed a low frequency signal generator based on STC89 C52 MCU. The function signal generator included the man-machine interaction module,processor module,power supply module and waveform generation module. Firstly,it calculated the sampling points of various signals by MATLAB,and then output the data via processor module. After the conversion by D/A conversion circuit from digital to analog,it obtained the final output waveform through the signal amplifier. The signal generator is simple and practical with low cost and high reliability features.
出处
《农业网络信息》
2018年第2期20-25,共6页
Agriculture Network Information
基金
海南省高等学校发展专项发展资金项目(编号:HX51069008001)支持
关键词
信号发生器
单片机
处理器模块
signal generator
single chip
processor module
