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A Spherical Directional Sound Pressure Hydrophone

A directional and hydrophone technology, applied in the field of spherical directional sound pressure hydrophones, can solve the problems of large directivity changes of sound pressure hydrophones, small acoustic isolation of simulators, and non-directionality, etc. The effect of large angle, simple signal processing method, and system size reduction

Active Publication Date: 2020-05-05
750 TEST SITE OF CHINA SHIPBUILDING IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem that the sound pressure hydrophone used on the current acoustic target simulator has a large directivity change in the working frequency band, especially at low frequencies, it is almost non-directional, which leads to the small acoustic isolation of the simulator and the problem of easy self-excitation

Method used

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  • A Spherical Directional Sound Pressure Hydrophone
  • A Spherical Directional Sound Pressure Hydrophone
  • A Spherical Directional Sound Pressure Hydrophone

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Embodiment Construction

[0033] Hereinafter, the present invention will be further described in conjunction with the drawings and specific embodiments.

[0034] figure 1 It is a structural schematic diagram of a spherical directivity sound pressure hydrophone provided by an embodiment of the present invention. Such as figure 1 As shown, a spherical directivity sound pressure hydrophone includes: two piezoelectric ceramic hemispheres 2, a fixed structure, a gasket 3, a fixing screw 4, a vulcanized sound-permeable rubber 5, and a wire 6; The ceramic hemisphere 2 is supported by the fixed structure; the gasket 3 and the fixing screw 4 are configured to fix the two piezoelectric ceramic hemispheres 2 and the fixed structure; the wire 6 is connected to the two piezoelectric ceramic hemispheres 2; the vulcanized sound-permeable rubber 5 covers the two A piezoelectric ceramic hemisphere 2 .

[0035] In one embodiment of the present invention, the fixing structure includes a connection pad 8; the connectio...

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Abstract

The invention provides a spherical directional sound pressure hydrophone, which comprises two piezoelectric ceramic hemispheres (2), a fixing structure, a gasket (3), a fixed screw (4), vulcanized sound transmission rubber (5), and a wire (6), wherein the two piezoelectric ceramic hemispheres (2) are fixed by the fixing structure; the gasket (3) and the fixed screw (4) are configured to fix the two piezoelectric ceramic hemispheres (2) and the fixing structure; the wire (6) is connected with the two piezoelectric ceramic hemispheres (2); and the vulcanized sound transmission rubber (5) coats the two piezoelectric ceramic hemispheres (2). Thus, the hydrophone can shield signals in a specific direction without affecting receiving of signals in other directions, the signal processing method is the same as the traditional hydrophone, and the spatial gains of the hydrophone can be improved at the same time.

Description

technical field [0001] The invention relates to underwater acoustic equipment, in particular to a spherical directivity sound pressure hydrophone. Background technique [0002] Acoustic target simulator is a weapon equipment that was born with underwater weapon testing and military training. Its working principle is to simulate underwater targets, such as submarines, surface ships, etc., and pass homing acoustic signals of torpedoes, aerial bombs and other weapons and equipment through hydrophones. Convert it into an electrical signal, and then add Doppler frequency shift, target strength, etc. to the electrical signal according to the characteristics of the simulated target, and finally convert the processed telecommunication into an acoustic signal through the sound pressure hydrophone, so that the realization of Targeted simulation of acoustic properties. [0003] At present, with the advancement of self-guiding systems for torpedoes, aerial bombs and other weapons and e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H3/12G01H11/08
CPCG01H3/12G01H11/08
Inventor 赵勰凌育进刘曲
Owner 750 TEST SITE OF CHINA SHIPBUILDING IND CORP