水声通讯仪换能器系统的研制

Abstract

利用溢流式换能器的液腔振动和径向振动耦合原理获得较宽的频率响应 ;采用声反射系统使换能器在垂直方向形成高指向性 ,换能器的方向性指数增加 2 2 d b。

The manufacture and experimental results of the transducer system for the acoustic communication meter have been introduced in this paper.A wider frequency response has been obtained by using the coupled principle of the liquid cavity vibration and the radial vibration of the free flooded transducer, and a higher directivity has been formed at the vertical direction of the transducer by using the acoustic reflection system so that the directivity index of the transducer can be increased by 22 dB.