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Piezoelectric cylindrical tube hydrophone with small size and high receiving sensitivity

A technology of receiving sensitivity and piezoelectric circular tube is applied in the field of piezoelectric circular tube hydrophone, which can solve the problems of low sensitivity and large volume, and achieve the effects of high receiving sensitivity, improved receiving sensitivity, and easy production.

Inactive Publication Date: 2018-12-21
HAIYING ENTERPRISE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a piezoelectric circular tube hydrophone with small volume and high receiving sensitivity, so as to solve the problems of large volume and low sensitivity of existing hydrophones

Method used

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  • Piezoelectric cylindrical tube hydrophone with small size and high receiving sensitivity
  • Piezoelectric cylindrical tube hydrophone with small size and high receiving sensitivity
  • Piezoelectric cylindrical tube hydrophone with small size and high receiving sensitivity

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Embodiment 1

[0018] The present invention provides a piezoelectric circular tube hydrophone with small volume and high receiving sensitivity, such as figure 1 shown. The piezoelectric circular tube hydrophone includes a plurality of circular tubes 1 , and the end faces in the vertical direction are glued between every two circular tubes through a decoupling element 2 . Specifically, according to the simulation and actual test results, the number of the circular tubes is optimally determined, so that the receiving sensitivity of the hydrophone meets the requirements, and at the same time, the output impedance of the hydrophone can be satisfied to facilitate the input matching of the back-end preamplifier.

[0019] see figure 2 , the circular tube 1 includes a piezoelectric ceramic 11, a wedge-shaped strip 12 and an electrode sheet 13, and the piezoelectric ceramic 11, the wedge-shaped strip 12 and the electrode sheet 13 are glued together by a polymer adhesive Form a round tube on the mo...

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Abstract

The invention discloses a piezoelectric cylindrical tube hydrophone with a small size and high receiving sensitivity and belongs to the technical field of hydrophones. The piezoelectric cylindrical tube hydrophone comprises multiple cylindrical tubes, and every two cylindrical tubes are glued on the end faces in the vertical direction by virtue of a decoupling element; and each cylindrical tube comprises piezoelectric ceramic, a wedge-shaped strip and an electrode slice which are glued into the cylindrical tube by virtue of macromolecular adhesive. Compared with the conventional cylindrical tube and a spherical hydrophone, the piezoelectric cylindrical tube hydrophone disclosed by the invention has the advantages that the receiving sensitivity is improved by more than 10dB, the receiving sensitivity of the conventional longitudinal vibration transducer is achieved, minimum diameter can reach less than 20mm, and the piezoelectric cylindrical tube hydrophone is simple and reliable, has obvious effect and is simpler and more convenient to manufacture.

Description

technical field [0001] The invention relates to the technical field of hydrophones, in particular to a piezoelectric circular tube hydrophone with small volume and high receiving sensitivity. Background technique [0002] With the emergence of quiet stealth targets, sonar active detection has not only become an important way of underwater detection, but also has a tendency to gradually decrease in frequency. This type of sonar generally uses longitudinal vibration transducers to form a common cylindrical array for sending and receiving. As the detection frequency decreases, the aperture of the sound-based array must increase accordingly, and the length and weight of the low-frequency longitudinal transducer also increase accordingly. The space requirements increase, but the bulbous bow of the ship needs to match the tonnage of the ship itself, and it is impossible to increase it infinitely, resulting in the contradiction that the detection frequency cannot continue to decrea...

Claims

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Application Information

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IPC IPC(8): G01H11/08
CPCG01H11/08
Inventor 刘汉文向卓君朱皓丁峰高峰
Owner HAIYING ENTERPRISE GROUP
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