Electronic compensation type broadband emission transducer

A transmitting transducer, compensation technology, applied in piezoelectric/electrostrictive transducers, transducer circuits, sensors, etc., can solve problems such as poor response level flatness

Active Publication Date: 2014-05-28
中国船舶重工集团公司第七〇五研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiency of poor flatness of the sending response level of the existing underwater acoustic emission transducers when working in ultra-wideband, the present invention provides an electronically compensated broadband emission transducer

Method used

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  • Electronic compensation type broadband emission transducer
  • Electronic compensation type broadband emission transducer
  • Electronic compensation type broadband emission transducer

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Embodiment Construction

[0017] The electronically compensated broadband transmitting transducer of the present invention includes a metal shell 1, a digital circuit board 2, an electroacoustic impedance matcher 3, an electronic component fastening screw 4, a rear mass 5, a positioning ring 6, a piezoelectric ceramic sheet 7, Fastening screw 8, front radiation head 9, sealing vulcanized rubber 10, heat conduction inner shell 11, power amplifier circuit board 12, power circuit board 13, sealing end cover 14 and data cable 15. Specifically include:

[0018] (1) Acoustic components.

[0019] Acoustic components are designed according to the technical requirements of the working frequency band and transmission response level. The rear mass 5, the positioning ring 6, the piezoelectric ceramic sheet 7, the fastening screw 8, and the front radiation head 9 together form an acoustic assembly. The finite element software is used to establish the analysis model, load the excitation and boundary conditions, si...

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Abstract

The invention discloses an electronic compensation type broadband emission transducer which is used for solving the technical problem of poor sending response level flatness, which is produced when the existing hydroacoustic emission transducer works in an ultra wideband. According to the technical scheme, the transducer comprises an acoustic component which is composed of a rear mass block (5), a positioning ring (6), a piezoelectric ceramic piece (7), a fastening screw (8) and front radiation head (9), and an electronic component which is composed of a digital circuit board (2), an electroacoustic impedance matching device (3), a power amplification circuit board (12) and a power supply circuit board (13). The functions of serial data communication, digital to analog conversion, signal power amplification and electroacoustic conversion are realized. A digital technology is used to carry out electronic compensation on the output response of the transducer, so that the transducer has flat emission voltage response in the ultra wideband. A test result shows that the work bandwidth of the transducer produced by the invention is 10KHz to 40KHz; the emission voltage fluctuation in the band is less than 4dB; and the dynamic range of an emission acoustic source level is 90dB to 160dB.

Description

technical field [0001] The invention relates to a broadband transmitting transducer, in particular to an electronically compensated broadband transmitting transducer. Background technique [0002] The underwater acoustic emission transducer is an important component of the underwater acoustic system. It converts electrical signals into acoustic signals that can propagate well in water, and realizes functions such as target detection and underwater acoustic communication. [0003] refer to Figure 5 . Document 1 ""Piezoelectric Transducer and Transducer Array" Peking University Press, 2005, page 147" discloses a conventional composite rod transducer. The transducer is composed of a metal front cover 18 , electrode leads 19 , piezoelectric ceramic sheet stack 20 , prestressed screw 21 and metal back cover 23 . The metal front cover plate 18, the piezoelectric ceramic sheet stack 20, and the metal back cover plate 23 are glued and connected at the end faces to form a whole, ...

Claims

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Application Information

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IPC IPC(8): H04R17/00H04R3/00
Inventor 张俊杨云川田丰华王玮王海陆
Owner 中国船舶重工集团公司第七〇五研究所
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