Small-size circumferential-spiral-groove longitudinal-vibration underwater transducer

An underwater acoustic transducer and longitudinal vibration technology, which is applied to transducers used underwater and other directions, can solve the problems of large size of low-frequency transducers, and achieve the effects of reducing vibration frequency and simple structure and manufacturing process.

Active Publication Date: 2017-12-22
SHAANXI NORMAL UNIV
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a small-sized circumferential spiral grooved longitudinal vibration underwater acoustic transducer, which realizes the lo

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  • Small-size circumferential-spiral-groove longitudinal-vibration underwater transducer
  • Small-size circumferential-spiral-groove longitudinal-vibration underwater transducer
  • Small-size circumferential-spiral-groove longitudinal-vibration underwater transducer

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[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings:

[0025] See Figure 1 to Figure 5 , A small-size circumferential spiral slotted longitudinal vibration underwater acoustic transducer, including a transducer body 4, the transducer body 4 includes a rear cover plate 45, a piezoelectric ceramic stack, and a front cover plate connected in sequence 48 and the front-end cutting body 49. The material of the front cover 48 and the front-end cutting body 49 is aluminum, the material of the rear cover 45 is steel, and the front cover 48 is horn-shaped. The smaller end of the opening is connected to the piezoelectric ceramic stack. The larger end is connected to the front cutting body 49, and the piezoelectric ceramic stack includes a first electrode sheet, a first piezoelectric ceramic sheet, a second electrode sheet, a second piezoelectric ceramic sheet, and a third electrode sheet connected in series in sequence , The ...

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Abstract

The invention discloses a small-size circumferential-spiral-groove longitudinal-vibration underwater transducer, which comprises a transducer body. The transducer body comprises a back cover plate, a piezoelectric ceramic stack, a front cover plate and a front-end cutting body, which are connected in sequence. The piezoelectric ceramic stack is formed by piezoelectric ceramic pieces and electrode slices, which are laminated alternately, and the two ends of the piezoelectric ceramic stack are the electrode slices respectively. One end of each piezoelectric ceramic piece is connected to a positive lead wire through the corresponding electrode slice, and the other end thereof is connected to a negative lead wire through the corresponding electrode slice; and the positive lead wire and the negative lead wire are connected to an excitation source. The underwater transducer realizes low-frequency emission within a frequency range of 50 Hz-1000 Hz. Besides, the transducer has the advantages of small overall size, simple structure and manufacture process and low cost.

Description

technical field [0001] The invention belongs to the field of underwater acoustic transducers, in particular to a small-sized circumferential spiral grooved longitudinal vibration underwater acoustic transducer. Background technique [0002] In the field of underwater detection technology, low-frequency transducers occupy an important position, and the most commonly used low-frequency transducers are mainly realized by liquid cavity vibration and bending vibration. However, such low-frequency transducers are generally large in size and mass, and there are many limitations in practical applications. Aiming at this problem, many scholars at home and abroad have done related research. Liu Zhenjun and others developed a cylindrical overflow low-frequency broadband transducer based on tangentially polarized piezoelectric ceramic rings, using the coupling of liquid cavity vibration and radial vibration to make the transducer operate at a frequency of 3 to 5 kHz With a flat respon...

Claims

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Application Information

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IPC IPC(8): H04R1/44
CPCH04R1/44
Inventor 张光斌邓云云张小凤
Owner SHAANXI NORMAL UNIV
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