论文部分内容阅读
针对纤毛式MEMS仿生单矢量水听器灵敏度偏低、频响曲线起伏较大的缺陷,对该结构水听器进行了优化设计.通过理论分析和仿真计算,从两方面进行了优化,一是纤毛材料的选择,选用光纤替代塑料柱体;二是设计了一种“半油半酯”新型封装结构.最后在国防水声一级计量站对该封装水听器进行了相应的校准测试.测试结果表明,该水听器性能较之前有了明显提高,灵敏度达到-165 dB(包括前置放大26 dB),频响范围为20 Hz～2 kHz(±4 dB),具有良好的“8”字型指向性.
Aiming at the defect that the sensitivity of the bionic MEMS bionic single-vector hydrophone is low and the frequency response curve fluctuates greatly, the hydrophone of the structure is optimally designed.Through theoretical analysis and simulation calculation, Cilia material selection, the use of optical fiber instead of plastic cylinder; the second is the design of a “semi-oil semi-ester ” new package structure. Finally, the national waterproof sound level metering station on the package hydrophone corresponding calibration Test results show that the hydrophone performance has improved significantly compared with the previous, the sensitivity of -165 dB (including preamplifier 26 dB), the frequency response range of 20 Hz ~ 2 kHz (± 4 dB), with good “8 ” font-oriented.