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Piezoelectric ceramic circular tube

A technology of piezoelectric ceramics and round tubes, applied in circuits, piezoelectric/electrostrictive/magnetostrictive devices, electrical components, etc., can solve the problems of low sensitivity of hydrophones, achieve reliable performance, reduce volume, Make easy effects

Pending Publication Date: 2019-06-14
中国船舶重工集团公司第七二六研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the sensitivity of the invented hydrophone is not high

Method used

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  • Piezoelectric ceramic circular tube
  • Piezoelectric ceramic circular tube
  • Piezoelectric ceramic circular tube

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Experimental program
Comparison scheme
Effect test

Embodiment

[0028] refer to Figure 1-3 , the present invention will be further described below in conjunction with accompanying drawing and implementation:

[0029] Such as figure 1 As shown, the piezoceramic tube includes: an upper part of the piezoelectric ceramic tube 101 , a lower part of the piezoelectric ceramic tube 102 , an interface 103 , a silver layer electrode 104 , a silver layer electrode 105 and a silver layer 106 . The upper part 101 of the piezoelectric ceramic circular tube and the lower part 102 of the piezoelectric ceramic circular tube adopt radial polarization with opposite polarization directions.

[0030] The manufacturing process of this segmented electrode piezoelectric ceramic circular tube is carried out according to the following steps:

[0031] 1. Make a ceramic round tube.

[0032] 2. Coat the inner wall of the piezoelectric ceramic circular tube with a silver layer, and the outer wall is bounded by the middle, and both upper and lower parts are covered ...

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Abstract

The invention relates to a piezoelectric ceramic circular tube in the technical field of hydrophones. The piezoelectric ceramic circular tube comprises a piezoelectric ceramic circular tube and silverlayers for covering the inner wall and the outer wall of the piezoelectric ceramic circular tube; the outer wall of the piezoelectric ceramic circular tube is divided into an upper portion, a lower portion and a middle portion from the middle, wherein the upper portion and the lower portion are covered with the silver layers, and the middle part is a blank part without the silver layer; and the upper portion silver layer and the inner wall silver layer, the lower portion silver layer and the inner wall silver layer are polarized separately, wherein the polarization directions are opposite. Compared with a single piezoelectric ceramic round tube with the same size and one-way polarization, the hydrophone has the effect of sensitivity multiplication.

Description

technical field [0001] The invention relates to the technical field of hydrophones, in particular to a piezoelectric ceramic circular tube. Background technique [0002] As an underwater sensor, the hydrophone can convert the acoustic signal generated by the underwater pressure change into an electrical signal for subsequent processing, and then through analysis, the real and reliable change of the underwater sound field can be obtained. Hydrophones play a very important role in marine environment detection. Only by continuously improving the sensitivity of hydrophones can we meet the needs of underwater signal detection. [0003] 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 d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/047H01L41/113H01L41/257H01L41/29H01L41/338G01H11/08H10N30/87H10N30/045H10N30/06H10N30/088H10N30/30
Inventor 程振阅郑信雄赵荣荣王新平张睿刘佳
Owner 中国船舶重工集团公司第七二六研究所