Piezoelectrics & Acoustooptics, Volume. 42, Issue 1, 127(2020)

Research on a New Type of Hydrophone Based on Sealed Cavity

LI Jian... WANG Xin, CHEN Shili and HUANG Xinjing* |Show fewer author(s)
Author Affiliations
  • [in Chinese]
  • show less

    A high sensitive and low cost hydrophone based on resonant air cavity is proposed in this paper. The hydrophone is formed by a sealed hollow spherical shell/cavity with a microphone inside to sense the sound coupled from the water outside. The frequency response of the hydrophone is predicted by finite element simulation, and it is confirmed that the characteristic peak of the frequency response curve depends on the resonant mode of the air cavity and is independent of the shell resonance. Therefore, the resonant frequency of the hydrophone only depends on the size of the internal air cavity. The experimental results demonstrate that the frequency response of the hydrophone is consistent with the simulation results, and the sensitivity is improved compared with the conventional piezoelectric hydrophone. The receiving sensitivity at the resonant frequency is 10 times higher than that of the conventional piezoelectric hydrophone.

    Tools

    Get Citation

    Copy Citation Text

    LI Jian, WANG Xin, CHEN Shili, HUANG Xinjing. Research on a New Type of Hydrophone Based on Sealed Cavity[J]. Piezoelectrics & Acoustooptics, 2020, 42(1): 127

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Received: Jul. 21, 2019

    Accepted: --

    Published Online: Apr. 21, 2022

    The Author Email: Xinjing HUANG (huangxinjing@tju.edu.cn)

    DOI:10-11977/j.issn.1004-2474.2020-01-028

    Topics