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A New Hydrophone Based on Resonant Air Cavity

An air cavity and hydrophone technology, applied in the direction of instruments, measuring devices, and electric devices, can solve problems such as complex structure, inability to fully satisfy users, poor sensitivity, etc., and achieve high signal-to-noise ratio, significant production practice significance, low cost effect

Active Publication Date: 2022-05-03
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned traditional hydrophones have complex structures and poor sensitivity, which cannot fully meet the needs of users.

Method used

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  • A New Hydrophone Based on Resonant Air Cavity
  • A New Hydrophone Based on Resonant Air Cavity
  • A New Hydrophone Based on Resonant Air Cavity

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Embodiment Construction

[0036] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0037] see Figure 1 to Figure 12 As shown, the present invention provides a novel hydrophone based on a resonant air cavity, including a sealed, spherical shell 1;

[0038] The inside of the spherical shell 1 has a hollow air cavity 3;

[0039] The position of the spherical center of the spherical shell 1 is equipped with a microphone 2;

[0040] The spherical shell 1 is placed in the water area to isolate the external water from the air cavity 3;

[0041] Microphone 2, for measuring sound projected from outside waters.

[0042] It should be noted that, for the present invention, the designed hydrophone structure is internally hollow spherical, and the spherical shell can be used for water insulation and providing an air cavity, and the ...

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Abstract

The invention discloses a novel hydrophone based on a resonant air cavity, which comprises a sealed spherical shell (1); the inside of the spherical shell (1) has a hollow air cavity (3); the spherical shell ( 1) at the center of the sphere, a microphone (2) is installed; the spherical shell (1) is placed in the water area to isolate the external water from the air cavity (3); the microphone (2) is used to measure the Projected voices. The invention discloses a new type of hydrophone based on a resonant air cavity, which uses the resonance of the air cavity inside the spherical shell, and uses a microphone to sense the sound pressure transmitted from the water outside the sphere into the air cavity. It has high sensitivity and high signal-to-noise ratio, and has great practical significance in production.

Description

technical field [0001] The invention relates to the technical field of hydrophones, in particular to a novel hydrophone based on a resonant air cavity. Background technique [0002] The hydrophone can effectively convert the acoustic signal into an electrical signal underwater, and realize the application of the acoustic signal by processing the electrical signal to achieve the purpose of underwater target detection or underwater information extraction. Most hydrophones work in the frequency band of the principle resonance frequency, have a flat frequency response, can receive broadband signals, or are used for standard hydroacoustic metering. Some hydrophones for detection and communication work at the resonant frequency in order to have the highest possible sensitivity at a specific frequency, while the sensitivity at other frequencies is relatively low to suppress the interference of environmental noise. [0003] Experiments have shown that the sensitivity of hydrophones...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H11/06
CPCG01H11/06
Inventor 黄新敬李赞李健封皓陈世利王欣
Owner TIANJIN UNIV