Open AccessDesign of transmitting and receiving circuit of ultrasonic transducer based on STM32
Author(s) -
Xiaohe Kong,
Xisheng Li,
Ruochen Zhou
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1678/1/012057
Subject(s) - ultrasonic sensor , preamplifier , electrical engineering , transducer , discrete circuit , signal (programming language) , waveform , acoustics , electronic engineering , circuit design , electronic filter , rc circuit , equivalent circuit , computer science , engineering , voltage , amplifier , short circuit , physics , cmos , programming language
In order to meet the needs of ultrasonic in industrial detection, an ultrasonic transmitter and receiver circuit based on STM32 is designed. The transmitting circuit is controlled by the optocoupler control isolation circuit and the MOSFET drive circuit to generate high-voltage excitation pulses to drive the ultrasonic transducer; the receiving circuit which achieves Processing of ultrasonic echo signals includes a limiter circuit, a preamplifier circuit, a Butterworth band-pass filter circuit and an automatic gain circuit, etc The actual test shows that the ultrasonic excitation signal generated by the system has the characteristics of low noise and steep waveform. The processed echo signal is clear, the system performance is good and the structure is simple, stable and reliable.