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Ultra-wideband underwater acoustic transducer

An underwater acoustic transducer and ultra-broadband technology, which is applied to transducers used underwater and other directions, can solve problems such as narrow bandwidth and complex structure, and achieve the effects of low cost, low price, and simple overall structure and manufacturing process.

Active Publication Date: 2016-11-16
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The wideband transducers in the prior art have a narrow bandwidth of the emission response, and some transducers need to add a matching layer, and their structures are complex

Method used

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all embodiments, based on The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts all belong to the protection scope of the present invention.

[0023] refer to figure 1 and figure 2 , the ultra-wideband underwater acoustic transducer of the present embodiment comprises an upper shell 1, a front cover plate 201, a plastic foam one 202, a piezoelectric ceramic round tube one 203, a plastic foam two 204, a piezoelectric ceramic round tube two 205, a plastic foam Three 206, piezoelectric ceramic round tube three 215, plastic foam four 207, piezoelectric ceramic round tube four...

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Abstract

The invention provides an ultra-wideband underwater acoustic transducer. The ultra-wideband underwater acoustic transducer comprises a shell and an underwater acoustic transducer body installed in the shell; the underwater acoustic transducer body comprises five piezoelectric ceramic circular tubes sequentially arranged; adjacent piezoelectric ceramic circular tubes are isolated through plastic foam; after being mutually compressed, the five piezoelectric ceramic circular tubes and the plastic foam are fixed in the shell; the vibration mode of the transducer is expanded from inside to outside under the stimulation of an external voltage signal; therefore, the transducer performs radial vibration and outwardly radiates acoustic wave energy; a difference value between a set of adjacent peak valleys on a frequency response curve is reduced by adjusting the longitudinal arrangement distance of the five piezoelectric ceramic circular tubes and controlling a transmitting voltage response value at a resonant frequency; namely, fluctuation of transmitting voltage response is reduced within a working band; the transmitting voltage response amplitude of the transducer at non-resonant frequency is nearly not decreased; therefore, broadening of the working band of the transducer is realized; the integral structure and a manufacturing process are simple; and the cost is low.

Description

technical field [0001] The invention belongs to the field of underwater acoustic transducers, and relates to an ultra-wideband underwater acoustic transducer. Background technique [0002] With the continuous application of finite element analysis method in transducer design, various new theories and new structures of underwater acoustic transducers emerge in an endless stream. However, piezoelectric transducers are still the focus of current underwater acoustic transducer research. Among them, piezoelectric circular tube transducers with simple structure are widely used and occupy an important research position of underwater acoustic transducers. Piezoelectric ceramic circular tubes are usually the transducer elements of circular tube transducers, and the polarization of general circular tubes The direction is divided into radial polarization and high polarization. The circular tube transducer has the characteristics of horizontal non-directionality, high receiving sensiti...

Claims

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Application Information

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IPC IPC(8): H04R1/44
CPCH04R1/44
Inventor 张光斌李媛媛张小凤
Owner SHAANXI NORMAL UNIV
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