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High-frequency broadband underwater acoustic transducer and manufacturing method thereof

An underwater acoustic transducer and broadband technology, applied in the direction of piezoelectric/electrostrictive transducers, sensors, sensor types, etc., can solve problems such as unstable structure, easy deformation, and complicated electrode preparation

Inactive Publication Date: 2019-11-22
CHINA ELECTRONICS TECH GRP NO 26 RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on the existing problems in the prior art, the present invention considers that the 1-3-2 type piezoelectric composite transducer with a matching layer can further widen the bandwidth of the transducer, and can effectively overcome the 1-3 piezoelectric composite transducer with a matching layer. Type piezoelectric composite transducer electrodes have the disadvantages of complex preparation, unstable structure and easy deformation, etc., which meet the technical requirements of high performance and high reliability for underwater acoustic applications

Method used

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  • High-frequency broadband underwater acoustic transducer and manufacturing method thereof
  • High-frequency broadband underwater acoustic transducer and manufacturing method thereof
  • High-frequency broadband underwater acoustic transducer and manufacturing method thereof

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, and Not all examples.

[0028] Such as figure 1 As shown, a high-frequency broadband underwater acoustic transducer of the present invention includes a matching layer 2, a wafer 3 and a backing layer 4 installed in parallel in the housing 5 from top to bottom; With sound-transmitting cladding 1;

[0029] Such as figure 2 As shown, the wafer 3 is a 1-3-2 type piezoelectric ceramic composite material structure, which includes a ceramic substrate 10, and a plurality of ceramic primitives 8 are grown on the top of the ceramic substrate 10, and every two ceramic primitives 8 They are connected by a polymer 9; an upper electr...

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Abstract

The invention belongs to and relates to a high-frequency broadband underwater acoustic transducer device, in particular to a high-frequency broadband underwater acoustic transducer and a manufacturingmethod thereof. The underwater acoustic transducer comprises a matching layer, a wafer backing layer and an acoustic transmission coating layer which are sequentially installed in the shell in parallel from top to bottom, wherein the wafer is of a 1-3-2 type piezoelectric ceramic composite material structure and comprises a ceramic substrate, a plurality of ceramic elements grow on the ceramic substrate, and every two ceramic elements are connected through a high-molecular polymer; an upper electrode is arranged above the ceramic element; a lower electrode is arranged below the ceramic substrate, a watertight cable or a watertight connector is led out from the lower electrode through the backing layer and the shell, and received or transmitted electric signals are input or output. According to the technical requirements of working frequency and bandwidth characteristics, the wafer and the matching layer are optimally designed, and when the method is applied to underwater speed measurement sonar and detection sonar, broadband signal processing can be carried out to increase the information amount, improve the detection precision, increase the detection range and the like.

Description

technical field [0001] This patent relates to a high-frequency broadband underwater acoustic transducer device, in particular to an underwater acoustic transducer device used in underwater speed measurement and depth measurement and other detection, specifically a high-frequency broadband underwater acoustic transducer and its Production method. Background technique [0002] With the continuous development of underwater acoustic countermeasures and underwater detection technology, the demand for high-frequency broadband transducers is increasing. Usually, the bandwidth of high-frequency transducers is relatively narrow. With the development of underwater detection accuracy and underwater communication, high-frequency transducers are required to have larger bandwidths to meet the requirements of broadband signal processing at the back end and provide more amount of information. [0003] The 1-3-2 piezoelectric composite transducer has the advantages of wide frequency band, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R17/00C08L75/04C08L63/00C08K3/08C08K3/22
CPCC08K3/08C08K3/22H04R17/00C08L63/00C08L75/04
Inventor 鲜晓军刘振华陈世钗汪红兵刘良方王登攀
Owner CHINA ELECTRONICS TECH GRP NO 26 RES INST
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