摘要
钹式水听器体积小,灵敏度高,但是接收的性能不够稳定,接收频带比较窄.为了解决这个问题,文章对钹式水听器结构进行改进,将水听器中单片压电陶瓷晶片改成双片,减小晶片半径,采用并联电路.文中先对水听器进行静态分析,然后用有限元软件对改进前后的水听器进行模拟分析,最后在水池中进行实验.结果都证明了改进后的水听器接收频带变宽,频段内接收性能稳定,灵敏度依然较高.
The cymbal hydrophone has small volume and high sensitivity, but its reception performance is not stable enough, with narrow receiving frequency band. In order to improve the inadequacy, the structure of the cymbal hydrophone had been changed. The single piezoelectric ceramic is changed to double, the radius of the piezoelectric ceramic is reduced, and parallel circuit is used. At first, static analysis of the new structure is described, then simulations are made for both the traditional and new structures of hydrophone by finite element software, at last, experiments are carried in the water pool. The results show that the improved hydrophone has wider reception frequency band, the reception performance is stable within this frequency band, and the sensitivity is still high.
出处
《渭南师范学院学报》
2009年第2期24-27,共4页
Journal of Weinan Normal University
关键词
钹式水听器
谐振频率
导纳
Cymbal hydrophone
resonance frequency
acoustic admittance
