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Acoustic Holographic Test Conformal Array for Underwater Noise Source Separation

A conformal array and acoustic holography technology, applied in seismology, water resource assessment, and measurement of ultrasonic/sonic/infrasonic waves in areas covered by water, can solve the problem of large test errors, increased test errors, and reduced test accuracy and other problems to achieve the effect of reducing error, reducing interference and improving separation accuracy

Active Publication Date: 2021-10-29
CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used acoustic holographic test device uses a linear array. On the one hand, the test error is too large. On the other hand, due to the limit of the test water depth, the test results are interfered by the reflection of the water surface and the bottom, which increases the test error and reduces the test accuracy.

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  • Acoustic Holographic Test Conformal Array for Underwater Noise Source Separation
  • Acoustic Holographic Test Conformal Array for Underwater Noise Source Separation
  • Acoustic Holographic Test Conformal Array for Underwater Noise Source Separation

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Embodiment Construction

[0016] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0017] Such as Figure 1-Figure 3 As shown, the acoustic holographic test conformal array for underwater noise source separation in this embodiment includes a frame structure 2 surrounding the outer ring of the test model 1 conformal to the outline of the test model 1, and the inner ring of the frame structure 2 is set There are a plurality of guide wheels 3 abutting against the outer surface of the test model 1, and the guide wheels 3 move along the outer surface of the test model 1; the frame structure 2 is formed by a plurality of frame units extending continuously in the circumferential direction, such as figure 2 As shown, it is a top view of the frame unit, the inner side is close to the center of the circle, and the outer side is away from the center of the circle. The frame unit is composed of four parallel hollow metal tubes 5 an...

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Abstract

The invention relates to an acoustic holographic test conformal array for underwater noise source separation. The abutting guide wheel, the frame structure is formed by a plurality of frame units extending continuously in the circumferential direction. The frame unit is composed of four parallel hollow metal tubes and metal reinforcement supports connecting the metal tubes; the frame units are respectively damped by rubber The support is equipped with two hydrophone sound arrays arranged at parallel intervals along the radial direction, and the test hydrophone units are equally spaced in the hydrophone sound array. The invention adopts rubber damping supports to be installed on the frame structure to reduce the interference of the vibration of the frame structure to the sound pressure measured by the hydrophone; it has a double-layer sound array to measure the sound pressure and separate the incident wave and the reflected wave, effectively reducing the impact of the water surface and the bottom reflection on the water. The error caused by the separation and analysis of underwater noise sources can greatly improve the accuracy of underwater noise source separation in a limited water depth environment.

Description

technical field [0001] The invention relates to the field of underwater noise testing, in particular to an acoustic holographic testing conformal array for underwater noise source separation. Background technique [0002] Underwater noise source separation technology is a key technology for underwater noise source location and control. Acoustic holography is a relatively convenient technology for underwater noise source separation. However, the currently used acoustic holographic test device uses a linear array. On the one hand, the test error is too large. On the other hand, due to the limit of the test water depth, the test results are interfered by the reflection of the water surface and the bottom, which increases the test error and reduces the test accuracy. Contents of the invention [0003] In view of the shortcomings in the above-mentioned existing production technology, the applicant provides an acoustic holographic test conformal array with reasonable structure f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00G01V1/20G01V1/18G01V1/38
CPCG01H17/00G01V1/186G01V1/20G01V1/3808G01V1/3835Y02A90/30
Inventor 庞业珍张小正张峰李亚顾笑东沈明学
Owner CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)