周期信号波形识别及参数测量装置的设计实现  

Design and Implementation of Periodic Signal Waveform Recognition and Parameters Measurement

作　　者：刘佶 Liu Ji(Shanxi Polytechnic College,Taiyuan Shanxi 030006,China)

机构地区：[1]山西职业技术学院,山西太原030006

出　　处：《山西电子技术》2023年第6期17-20,共4页Shanxi Electronic Technology

摘　　要：设计使用STM32F407 MCU为核心,增加外围信号调理电路与程控可变增益放大器模块,实现了无需手动切换档位的周期信号的波形类型识别及频率、峰峰值、占空比测量功能。所设计系统能够测量50 mV≤Vpp≤10 V、1 Hz≤f≤50 kHz的正弦波、三角波、方波信号,并能够测量方波信号20%~80%的占空比。In this paper,STM32F407 MCU is used as the core,and peripheral signal conditioning circuit and programmable variable gain amplifier module are added to implementthe waveform type recognition and frequency,peak-to-peak and duty cycle measurement of periodic signals without manual shift.The system designed in this paper can measure the sine wave,triangle wave and square wave signals of 50 mV≤Vpp≤10 V,1 Hz≤f≤50 kHz,and can measure the duty cycle of the square wave signal from 20%to 80%.

关 键 词：周期信号 参数测量 MCU 可变增益放大 

分 类 号：TP334.3[自动化与计算机技术—计算机系统结构]