摘要
阐述以单片机(MSP432P401R)为核心,自动增益控制(AGC)电路、信号调理电路、LCD显示屏模块、频率测量电路、无线传输模块以及其他电路作为外围模块构成整体系统的方案,采用了信号采集中的欠采样原理实现在更低的采样频率下获得完整的高频信号波形,进而分析信号中的基波和高次谐波分量,获得其总谐波失真(THD)。
This paper expounds the scheme of the overall system with single chip microcomputer(MSP432P401R) as the core and automatic gain control(AGC) circuit, signal conditioning circuit, LCD display module, frequency measurement circuit, wireless transmission module and other circuits as peripheral modules. It adopts the under sampling principle in signal acquisition to obtain a complete high-frequency signal waveform at a lower sampling frequency, and then analyzes the fundamental and higher harmonic components in the signal, The total harmonic distortion(THD) is obtained.
作者
朱成浩
陈恒
丁庆辰
张元
叶文博
郭浩民
ZHU Chenghao;CHEN Heng;DING Qingchen;ZHANG Yuan;YE Wenbo;GUO Haomin(School of Electronic Information,Hangzhou University of Electronic Science and Technology,Zhejiang 310018,China)
出处
《电子技术（上海）》
2022年第5期106-107,共2页
Electronic Technology
关键词
单片机
AGC
信号调理
低功耗
single chip microcomputer
AGC
signal conditioning
low power consumption
