超声波检测系统前端电路设计

摘要

基于超声波污垢检测系统,介绍了超声波激励与接收电路的设计过程。该电路包括高压电源、脉冲发射电路以及回波信号接收电路。设计的高压电源模块产生300 V的直流电压;脉冲发射电路采用电容瞬间放电原理产生高压脉冲;超声波回波信号采用非线性放大电路进行信号的放大。所设计的电路实现了超声波收发的功能。%A transmit/receive circuit for ultrasonic transducer is designed which used in fouling detection. The circuit comprises a high voltage pulsed;a pulse transmitting and receiving circuits. The designed high voltage power provides a voltage 300VDC. The pulse circuit generate high voltage pulsed by the theory of capacitor discharge. The echo signal is amplified by the circuit of nonlinear amplifier. The designed circuit realized the ultrasonic transceiver.