Side sonar array sound barrier device with noise reducing

A sonar array and broadside technology, applied in measurement devices, re-radiation of sound waves, utilization of re-radiation, etc., can solve problems such as loss of reason for existence, difficulty in radiating noise, etc., and achieve the effect of reducing noise and improving detection distance.

Inactive Publication Date: 2005-03-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the operating frequency of low-frequency sonar is generally tens of hertz to several thousand hertz, and the radiated noise generated by ships during navigation, such as mechanical noise, propeller noise and hydrodynamic noise, as well as ocean backgro

Method used

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  • Side sonar array sound barrier device with noise reducing
  • Side sonar array sound barrier device with noise reducing
  • Side sonar array sound barrier device with noise reducing

Examples

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Embodiment Construction

[0014] like figure 1 , figure 2 , image 3 As shown, the present invention includes that the sound insulation layer 4, the sonar array 7, the sealing rubber 9 and the bead 5 are sequentially installed from the base array frame 3 from the inside to the outside; A sound baffle 8 and a rubber pad 6 are sequentially installed on the outside, and more than one pair of piezoelectric sheets 10 ( image 3 The middle is 4 pairs), the piezoelectric sheets 10 are all connected with wires, the wires connected with the piezoelectric sheets 10 on the sound baffle 8, the wires near the sonar array 7 pass through the rubber pad 6 and the base array frame 3, and the wires near the ship The lead wires of the piezoelectric sheet 10 of the ship hull 1 pass through the sound insulation layer 4 and the array frame 3 and lead out.

[0015] There are 1 to 10 pairs of piezoelectric sheets pasted on both sides of the acoustic baffle 8 , the piezoelectric sheet is made of lead zirconate titanate, an...

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PUM

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Abstract

The invention discloses a noise-reducing shipboard sonar array sound baffleplate device, mounted with a sound isolating layer, a sonar array and depression bar from a base array frame to outside; mounted with a sound baffleplate and a rubber pad form inside to outside between the sound isolating layer and the sonar array, two surfaces of the sound baffleplate are both pasted with above a pair of piezoelectric pieces, which connect with lead wires, where the lead wires near to the sonar array are led out through the rubber pad and the base array frame, and the lead wires of the piezoelectric piece near to the ship casing are led out through the sound isolating layer and the base array frame. It effectively reduces the noise radiated from the ship casing to the sonar array and increases the detection distance of the sonar.

Description

technical field [0001] The invention relates to a noise control device, in particular to a side sonar array sound barrier device with noise reduction. Background technique [0002] Sonar equipment has the functions of detecting, locating, identifying and tracking / moving targets in water. It is an important means for modern ships to detect targets in water, and has a wide range of applications in many fields such as military and civilian use. With the development of science and technology and the confrontation between identification and anti-identification, the performance of sonar is continuously improved and perfected. For example, due to the emergence of stealthy (covered anechoic tile) submarines, the detection performance of the more mature medium and high frequency active sonars has declined, and low frequency active sonars (Low frequency active sonar, LFAS) have emerged as the times require. This is because low-frequency sonar (including active and passive) has the fo...

Claims

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Application Information

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IPC IPC(8): G01S7/537G01S15/00G01S15/88
Inventor 魏燕定
Owner ZHEJIANG UNIV
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