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High sensitivity hydrophone used for sound wave detection

A high-sensitivity, acoustic wave detection technology, used in the measurement of ultrasonic/sonic/infrasonic waves, instruments, measuring devices, etc., can solve the problems of bulky products, inability to achieve high-sensitivity detection of acoustic waves, and achieve miniaturization in size, which is conducive to operation and portability. , the effect of high sensitivity detection

Active Publication Date: 2016-08-10
西部(重庆)健康管理研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a high-sensitivity hydrophone for sound wave detection, which is used to solve the problems that the existing hydrophone cannot realize high-sensitivity detection of sound waves and the product is too bulky

Method used

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  • High sensitivity hydrophone used for sound wave detection
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  • High sensitivity hydrophone used for sound wave detection

Examples

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Embodiment 1

[0032] This embodiment provides a high-sensitivity hydrophone for detecting underwater sound waves, please refer to figure 1 , the hydrophone 1 includes an acoustic-electric transducer module 10, a first output matching module 20 and a power supply module 30, wherein,

[0033] The acoustic-electric transducer module 10 is used to respond to the received acoustic signal and convert it into an electrical signal and then output it, wherein the response includes the frequency band where the acoustic-electric transducer module 10 operates at its natural anti-resonant frequency / adjacent frequency band; the first output matching module 20 is connected to the acoustic-electric transducer module 10 for accessing the power supply provided by the power supply module 30, and performing step-down processing and impedance-reducing processing on the electrical signal output; the DC power supply module 30 is electrically connected to the first output matching module 20 for providing a DC pow...

Embodiment 2

[0045] This embodiment will provide another hydrophone in combination with the technical solution provided in embodiment 1 and the technical solution in the prior art, please refer to image 3 , the hydrophone includes an acoustic-electric transducer module 10, which is used to respond to the received acoustic signal and convert it into an electrical signal and then output it, wherein the response includes that the acoustic-electric transducer module 10 works in The frequency band / adjacent frequency band where its natural anti-resonance frequency is located; the switch switching module 40 is connected to the acoustic-electric transducer module 10, and the electrical signal is connected to the first output matching module 20 or the second output by switching Matching module 50; the first output matching module 20 is electrically connected to the switch switching module 40, and is used to connect the power supply provided by the power supply module 30 when the electrical signal i...

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Abstract

The invention provides a high sensitivity hydrophone used for sound wave detection. The hydrophone comprises an acoustic-electric energy conversion module, a first output matching module and a direct current power source module, wherein the acoustic-electric energy conversion module responds to acoustic signals which are received and converts the acoustic signals into electric signals which then can be output; during a responding process, the acoustic-electric energy conversion module works in a frequency band where an intrinsic anti-resonance frequency of the acoustic-electric energy conversion module is in or an adjacent frequency band; the first output matching module is connected with the acoustic-electric energy conversion module and is used for connecting with a work power source provided by the power source module; after the electric signals are subjected to voltage step-down operation and impedance lowering operation, the electric signals are output; the direct current power source module provides the work power source for the first output matching module. When the hydrophone works in a harmonic resonant condition, high sensitivity detection of sound wave signals in a specific frequency range can be realized, a defect of low sensitivity of a conventional disresonance type hydrophone can be overcome, a problem that a resonant cavity structure hydrophone arranged around a conventional energy conversion element can only detect sound wave signals in a low frequency band can be addressed; the high sensitivity hydrophone is characterized by small size, convenience of operation and portability.

Description

technical field [0001] The invention relates to the technical field of hydrophones, in particular to a high-sensitivity hydrophone for sound wave detection. Background technique [0002] In the field of underwater acoustics, the hydrophone is a very important and commonly used testing equipment. Existing hydrophones are mainly used to detect sound fields, and generally consist of piezoelectric transducer elements, impedance matching devices and damping resistors. For example, in the published patent CN203464995U, a piezoelectric hydrophone is disclosed: including a sheath, an output impedance matcher, a waterproof plug, and a transducer module arranged inside the sheath; the transducer module includes a piezoelectric ceramic transducer The energy element, the first copper substrate and the second copper substrate; the first copper substrate, the piezoelectric ceramic transducer element and the second copper substrate are stacked together in sequence; the first copper substr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H11/06
CPCG01H11/06
Inventor 杨增涛王华
Owner 西部(重庆)健康管理研究院有限公司