设计了超声波换能器的结构和信号处理电路，能够实现二重气泡监测功能。
The design of structure of ultrasonic transducer and circuit for signal disposing can realize dual air bubbles monitoring function.
文中以时差法为例，分析了超声波换能器中超声射线入射角及振荡频率对测量精度的影响，给出了换能器的选择原则。
The paper analyzes the influence of incidence and oscillation frequency of ultrasonic sensor on measuring accuracy and the choose principle of ultrasonic sensor is presented.
同时介绍了超声波换能器(探头)及其等效电路。
It also introduces ultrasonic transducer and its equivalent circuit.
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