传感技术学报2011，Vol.24Issue(4)：517-521,5.DOI:10.3969/j.issn.1004-1699.2011.04.010
纤毛式矢量水听器新型封装结构的研究
Advancements in Encapsulation of Hair Vector Hydrophone*
摘要
Abstract
A novel encapsulation structure was proposed to package the sensitive unit, which imitated the fish lateral line cells. That was, polyurethane the same material as sound-transparent cap, instead of castor oil, was selected to encapsulate. And only half of the hair was submerged. It is desirable that the novel encapsulation can effectively improve vector hydrophone's sensitivity. By means of analysis vector hydrophone's theoretical model, the acoustical transmission coefficient was obtained. This paper simulated the encapsulation model by ANSYS and it could be concluded that the sensitivity was 0. 259 mV/Pa, resonance frequency was 150 Hz. Finally, the prototype of the vector hydrophone was fabricated and tested. Results show that the free-field voltage sensitivity is -188.9 dB, which is 8.8dB higher than that of castor oil encapsulation. The hydrophone possesses satisfactory directional pattern and frequency response ranges from 50 Hz to 2 kHz.关键词
矢量水听器/纤毛/封装/ANSYSKey words
vector hydrophone/ hair/ encapsulation/ ANSYS分类
通用工业技术引用本文复制引用
许姣,张国军,石归雄,王晓瑶,刘细宝,张文栋..纤毛式矢量水听器新型封装结构的研究[J].传感技术学报,2011,24(4):517-521,5.基金项目
国家自然科学基金项目(50775209) （50775209）
