摘要
针对低频信号的采集,设计以STM32为核心的低功耗、高性能、高精度的低频信号采集电路。电路采用霍尔传感器以及运算放大器对电流信号进行采集和跟随,利用电阻分压以及比较器对电压信号与频率进行采集,利用STM32中内置的ADC对信号进行数模转换,并通过OLED进行显示。
In this paper, a low-power, high performance and high-precision low-frequency signal acquisition circuit is designed based on STM32.The circuit uses Hall sensor and operational amplifier to collect and follow the current signal, uses resistance voltage divider and comparator to collect the voltage signal and frequency, uses built-in ADC in STM32 to convert the signal to digital analog, and displays it through OLED.
作者
龙技延
李靖
田新疆
LONG Jiyan;LI Jing;TIAN Xinjiang(School of Electrical and Information Engineering,Hunan Institute of Engineering,Hunan 411104,China;Xiamen Minguang Electric Industrial Co.,Ltd.,Fujian 361000,China)
出处
《集成电路应用》
2021年第5期20-22,共3页
Application of IC
关键词
低频信号采集
傅式算法
单片机
STM32
low frequency signal acquisition
Fourier algorithm
microprocessor
STM32
