Design of a Novel Encapsulation based on Hair Cell Vector Hydrophone

摘要：

According to sensitive structure of vector hydrophone which imitates fish lateral line cells, a novel encapsulation of polyurethane is proposed, that is, using polyurethane, the same material as soundtransparent cap, instead of castor oil to package. It is desirable that the novel encapsulation may effectively solve the problem of vector hydrophones low sensitivity. On the basis of analysis theoretical model of sound-transparent caps three layer mediums, this paper simulated the whole encapsulation structure by ANSYS. It can be concluded that the sensitivity is 0.267mV/Pa, resonance frequency is 1151.37 Hz. Finally, the prototype of the vector hydrophone was fabricated and preliminary characterization tests of the hydrophone were performed. Results show that the novel encapsulation hydrophone possesses satisfactory directional pattern and the free-field voltage sensitivity is -188.9 dB, which is 8.8dB higher than castor oil encapsulation.

关键词： Vector hydrophone Hair cell Polyurethane encapsulation MEMS ANSYS

作者: Jiao Xu Guojun Zhang Guixiong Shi Xibao Liu Wendong Zhang

作者单位: Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education Science and T Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education

会议类型: 国际会议

会议名称: 2010 6th International Conference on MENS NANO,and Smart System(2010年微机电纳米、智能系统国际会议 ICMENS 2010)

会议地点: 长沙

会议语种:英文

页码: 281-284

在线出版日期: 2010-12-14（万方平台首次上网日期，不代表论文的发表时间）