CN106131744A - A kind of ultra-wideband underwater acoustic transducer - Google Patents
A kind of ultra-wideband underwater acoustic transducer Download PDFInfo
- Publication number
- CN106131744A CN106131744A CN201610606848.8A CN201610606848A CN106131744A CN 106131744 A CN106131744 A CN 106131744A CN 201610606848 A CN201610606848 A CN 201610606848A CN 106131744 A CN106131744 A CN 106131744A
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- Prior art keywords
- circular tube
- underwater acoustic
- piezoelectric ceramic
- acoustic transducer
- transducer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
nullThe present invention provides a kind of ultra-wideband underwater acoustic transducer，Including housing and installation underwater acoustic transducer body in the housing，Underwater acoustic transducer body includes five piezoelectric ceramic circular tube set gradually，Separated by plastic foam between adj acent piezoelectric pottery pipe，Five piezoelectric ceramic circular tube and plastic foam are fixed in housing after mutually compressing，Transducer is under the excitation of applied voltage signal，Mode of oscillation is expanded from inside to outside，Thus cause transducer to do radial vibration outside radiative acoustic wave energy，By adjusting the distance of five piezoelectric ceramic circular tube longitudinal arrangements，Control the transmitting voltage response value at resonant frequency，Show that on frequency response curve, between one group of adjacent peak valley, difference reduces，I.e. transmitting voltage response rises and falls reduction in working band，Transmitting voltage response amplitude at transducer disresonance frequence is almost without decline，Achieve the broadening of transducer working band，Overall structure and processing technology be simple and low cost.
Description
Technical field
The invention belongs to underwater acoustic transducer field, relate to a kind of ultra-wideband underwater acoustic transducer.
Background technology
Along with the finite element method continuous utilization in transducer designs, various new theorys, the underwater sound of new construction change
Can emerge in an endless stream by device, but piezoelectric transducer is still the emphasis of current Study of underwater acoustic transducer.The wherein piezoelectricity of simple in construction
Circular pipe type transducer uses extensively, and in occupation of the research position that underwater acoustic transducer is important, piezoelectric ceramic circular tube usually pipe changes
The inverting element of energy device, the polarised direction of general pipe is divided into radial polarised and high degree of polarization.Pipe transducer have level without
Directivity, receiving sensitivity are high, the feature of simple in construction, usually used as low frequency, high-power and broadband underwater acoustic emission sound source, it is possible to
As broadband receiving hydrophone, it is widely used in the field such as ocean development and geological prospecting.Piezoelectric circular transducer is general
Utilizing the mode of the radial vibration of piezoelectric ring, it launches the narrower bandwidth of response.
For the working band of this transducer of broadening, designers propose the scheme of different solutions, traditional side
Method is coupling of the sap cavity the using piezoelectric ring mode with radial vibration, owing to the resonant frequency of sap cavity is relatively low, is suitable for low frequency
Transducer, is also adopted by the various mode of oscillation of principle reasonable arrangement of multi-mode coupling, this open up wide band mode and accurately to control
Make two kinds or the spacing of multiple mode of oscillation.Utilize the mode of the radial vibration of piezoelectric circular and high-order radial vibration mode
Coupling also can realize the broadband emission of pipe transducer, and the transducer made with this principle has certain horizontal directivity, breathes out
The scholar of your shore engineering university proposes and utilizes the radial vibration mode of piezoelectric circular and the coupled vibrations of flexural vibration mode to set
Having counted a kind of with a width of 40-80kHz, the high frequency wide-band transducer of fluctuating ± 4dB, the most current transducer is all more than utilizing
Various technology and the method combined thereof, it is achieved underwater acoustic transducer is at wide band frequency ranges of operation.
The narrower bandwidth of its transmitting response of the wide-band transducer of prior art, some transducers need to add matching layer, its
Structure is complicated.
Summary of the invention
The purpose of patent of the present invention is to provide a kind of ultra-wideband underwater acoustic transducer, and this transducer is various sizes of by three groups
Five axially aligned compositions of piezoelectric ceramic circular tube, the working band often organizing transducer is different, sending out of three groups of piezoelectric ceramic circular tube
Penetrating sound field mutual superimposed formation transducer transmitting voltage response in relative broad range, the fluctuating making transmitting voltage response is less,
Realize underwater acoustic transducer at wider frequency ranges of operation.
In order to achieve the above object, the present invention uses below scheme:
A kind of ultra-wideband underwater acoustic transducer, including housing and installation underwater acoustic transducer body in the housing, underwater sound transducing
Device body includes five piezoelectric ceramic circular tube set gradually, and the polarised direction of five piezoelectric ceramic circular tube is identical, is radially
Direction, is separated by plastic foam between adj acent piezoelectric pottery pipe, and five piezoelectric ceramic circular tube and plastic foam mutually compress
After be fixed in housing, five piezoelectric ceramic circular tube sides connect positive wire respectively, and opposite side connects negative wire respectively, just
Pole lead-in wire and negative wire lead to hull outside, by adjusting the distance of five piezoelectric ceramic circular tube longitudinal arrangements, reduce transducing
Device transmitting voltage response in working band rises and falls, it is achieved transducer is at the frequency ranges of operation of ultra-wide.
Further, described underwater acoustic transducer body also includes front shroud and back shroud, coarctate five piezoelectric ceramics
Pipe and plastic foam are compressed by front shroud and back shroud, and by running through five piezoelectric ceramic circular tube, plastic foam, front shrouds
Fix with screw rod and the bottom nut of back shroud；Negative wire and positive wire pass the groove of screw rod side and lead to hull outside.
Further, described housing includes shell and lower casing, and described upper shell surrounds upper cover plate, before lower casing surrounds
Cover plate, five piezoelectric ceramic circular tube and plastic foam, formed between upper shell and lower casing and seal structure.
Further, described upper shell is cone, and lower casing is cylinder hull shape.
Further, described upper shell and lower casing use sound transmitting rubber to make.
Further, front shroud and back shroud are adopted and are made of a steel.
Further, five piezoelectric ceramic circular tube use PZT-4 piezoelectric ceramics to make.
The invention have the advantages that
The ultra-wideband underwater acoustic transducer of the present invention includes housing and installs underwater acoustic transducer body in the housing, and the underwater sound changes
Energy device body includes five piezoelectric ceramic circular tube set gradually, and is separated by plastic foam between adj acent piezoelectric pottery pipe,
Five piezoelectric ceramic circular tube and plastic foam are fixed in housing after mutually compressing, and transducer is in the excitation of applied voltage signal
Under, mode of oscillation is expanded from inside to outside, thus causes transducer to do radial vibration outside radiative acoustic wave energy, and plastic foam is
The piezoelectric ceramic circular tube that two adjacent is separated, it is achieved transducer intermediate supports and fixing.By adjusting five piezoelectric ceramics
The distance of pipe longitudinal arrangement and the diameter of piezoelectric ceramic circular tube, control the transmitting voltage response value at resonant frequency, show
On frequency response curve, between one group of adjacent peak valley, difference reduces, i.e. transmitting voltage response rises and falls reduction in working band, changes
Transmitting voltage response amplitude at energy device disresonance frequence is almost without decline, it is achieved that the broadening of transducer working band.
The present invention is compared with other wide-band transducers, it is not necessary to add matching layer, element used is relatively common, price the most all than
Less expensive, overall structure and processing technology be simple and low cost.
Accompanying drawing explanation
Fig. 1 is the generalized section of the embodiment of the present invention；
Fig. 2 is the ultra-wideband underwater acoustic transducer generalized section of another embodiment of the present invention；
Fig. 3 is the ultra-wideband underwater acoustic transducer internal screw schematic diagram of the embodiment of the present invention；
Fig. 4 is the transmitting voltage response curve chart of the ultra-wideband underwater acoustic transducer that the present invention relates to；
In figure: the upper shell of 1-, the novel transducer of 2-, 3-lower casing, 201-front shroud, 202-plastic foam one, 203-presses
Electroceramics pipe one, 204-plastic foam two, 205-piezoelectric ceramic circular tube two, 206-plastic foam three, 215-piezoelectric ceramics circle
Pipe three, 207-plastic foam four, 214-piezoelectric ceramic circular tube four, 213-plastic foam five, 212-piezoelectric ceramic circular tube five, 211-
Plastic foam six, 210-bonnet, 208-screw rod, 209-bottom nut, 216-negative wire, 217-positive wire.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiment wholely, based on
Embodiment in the present invention, those of ordinary skill in the art the most do not make obtained under creative work premise all its
His embodiment, broadly falls into the scope of protection of the invention.
With reference to Fig. 1 and Fig. 2, the ultra-wideband underwater acoustic transducer of the present embodiment includes shell 1, front shroud 201, plastic foam
One 202, piezoelectric ceramic circular tube 1, plastic foam 2 204, piezoelectric ceramic circular tube 2 205, plastic foam 3 206, piezoelectricity is made pottery
Porcelain pipe 3 215, plastic foam 4 207, piezoelectric ceramic circular tube 4 214, plastic foam 5 213, piezoelectric ceramic circular tube 5 212,
Plastic foam 6 211, back shroud 210, screw rod 208, bottom nut 209, negative wire 216, positive wire 217, lower casing 3,
Described front shroud 201, plastic foam 1, piezoelectric ceramic circular tube 1, plastic foam 2 204, piezoelectric ceramic circular tube two
205, plastic foam 3 206, piezoelectric ceramic circular tube 3 215, plastic foam 4 207, piezoelectric ceramic circular tube 4 214, plastic foam
5 213, piezoelectric ceramic circular tube 5 212, plastic foam 6 211, the center installation screw rod 208 of back shroud 210, upper shell 1,
Lower casing 3 is separately mounted to screw rod 208 rear and front end, and screw rod 208 both sides are fluted, equipped with bottom nut bottom screw rod 208.
Piezoelectric ceramic circular tube 1, plastic foam 2 204, piezoelectric ceramic circular tube 2 205, plastic foam 3 206, piezoelectricity
Pottery pipe 3 215, plastic foam 4 207, piezoelectric ceramic circular tube 4 214, plastic foam 5 213, piezoelectric ceramic circular tube 5 212
Alternately longitudinally form.Plastic foam 1 is arranged between described front shroud 201 and piezoelectric ceramic circular tube 1, plastics
Foam 6 211 is arranged between described back shroud 210 and piezoelectric ceramic circular tube 5 212, and described positive wire 217 connects pressure respectively
Electroceramics pipe 1, piezoelectric ceramic circular tube 2 205, piezoelectric ceramic circular tube 3 215, piezoelectric ceramic circular tube 4 214, piezoelectricity is made pottery
Inside porcelain pipe 5 212, described negative wire 216 connects outside five piezoelectric ceramic circular tube respectively.
Three resonant frequencies of ultra-wideband underwater acoustic transducer are mainly by the first two piezoelectric ceramic circular tube and the pressure of centre
Electroceramics pipe controls, and the first two piezoelectric ceramic circular tube and latter two piezoelectric ceramic circular tube are piezoelectric ceramic circular tube of the same race,
Bandwidth of operation can be changed so that the bandwidth of transducer becomes by the distance adjusting the longitudinal arrangement of these five piezoelectric ceramic circular tube
Width, and the fluctuating of transmitting voltage response is less.
With reference to Fig. 1, the present embodiment also includes shell 1 and lower casing 3, front shroud 201, back shroud 210, spiral shell on sound transmitting rubber
Bar 208, wherein said shell is positioned at outside the ultra-wideband underwater acoustic transducer of Fig. 1 institute installation, within it installs screw rod 208；
Described front shroud 201 and back shroud 210 are positioned at described enclosure and are closed by transducer and fixed by transducer by nut；Institute
State sound transmitting rubber and be positioned at the whole of transducer.
Further, upper shell 1 is in cone, and lower casing 3 is fixed on the outside up and down of Fig. 1 shown device in cylinder, outward
Shell is close to the outside of transducer, and shell keeps transducer to balance built with cylindrical screw rod 208, and front shroud 201 centre position is opened
There is circular hole, be arranged on shell 1 internal.
Described upper shell 1 and lower casing 3 are sound transmitting rubber, and front shroud 201 and back shroud 210 are steel, piezoelectric ceramics circle
Pipe uses PZT-4 pottery to realize.
Described positive wire 217 connects piezoelectric ceramic circular tube 1, piezoelectric ceramic circular tube 2 205, piezoelectric ceramics circle respectively
Pipe 3 215, piezoelectric ceramic circular tube 4 214, then the side within piezoelectric ceramic circular tube 5 212 is each passed through screw rod 208 and front
Circular hole in the middle of cover plate 201, negative wire 216 connects outside five piezoelectric ceramic circular tube respectively, is each passed through screw rod 208 side
Groove, the circular hole in the middle of front shroud 201 is connected with driving source.
The present invention realizes the principle of transducer working band broadening: by adjusting five piezoelectric ceramic circular tube longitudinal arrangements
Between distance, reduce the transmitting voltage response value at the resonant frequency that controlled of piezoelectric ceramic circular tube, show frequency response
On curve, between one group of adjacent peak valley, difference reduces (between two peaks, trench shoals), it is achieved that ultra-wideband underwater acoustic transducer launches electricity
The minimizing of pressure response fluctuating and the broadening of working band.
Fig. 3 is the internal screw figure of the ultrasonic transducer of type of the present invention, and the both sides of screw rod are fluted.
Fig. 4 is the transmitting voltage response curve chart of the ultra-wideband underwater acoustic transducer of type of the present invention, figure show that transducer exists
In 14kHz-131kHz working band, transmitting voltage response rises and falls is 12.7dB, and maximum transmitting voltage response is 152.7dB, bandwidth
Substantially widen.
Claims (7)
1. a ultra-wideband underwater acoustic transducer, it is characterised in that: include housing and underwater acoustic transducer body in the housing is installed,
Underwater acoustic transducer body includes five piezoelectric ceramic circular tube set gradually, and the polarised direction of five piezoelectric ceramic circular tube is identical,
It is radial direction, is separated by plastic foam between adj acent piezoelectric pottery pipe, five piezoelectric ceramic circular tube and plastic foam
Being fixed in housing after mutually compressing, five piezoelectric ceramic circular tube sides connect positive wire (217) respectively, and opposite side connects respectively
Connect negative wire (216), positive wire (217) and negative wire (216) and lead to hull outside, by adjusting five piezoelectric ceramics
The distance of pipe longitudinal arrangement, reduces transducer transmitting voltage response in working band and rises and falls, it is achieved transducer is in ultra-wide
Frequency ranges of operation.
Ultra-wideband underwater acoustic transducer the most according to claim 1, it is characterised in that: described underwater acoustic transducer body also includes
Front shroud (201) and back shroud (210), coarctate five piezoelectric ceramic circular tube and plastic foam pass through front shroud (201)
Compress with back shroud (210), and by running through five piezoelectric ceramic circular tube, plastic foam, front shroud (201) and back shroud (210)
Screw rod (208) and bottom nut (209) fix；Negative wire (216) and positive wire (217) are through screw rod (208) side
Groove lead to hull outside.
Ultra-wideband underwater acoustic transducer the most according to claim 2, it is characterised in that: described housing include shell (1) and
Lower casing (3), described upper shell (1) encirclement upper cover plate (201), lower casing (3) surrounds front shroud (201), five piezoelectricity potteries
Porcelain pipe and plastic foam, formed between upper shell (1) and lower casing (3) and seal structure.
Ultra-wideband underwater acoustic transducer the most according to claim 3, it is characterised in that: described upper shell (1) is cone, under
Shell (3) is cylinder hull shape.
Ultra-wideband underwater acoustic transducer the most according to claim 3, it is characterised in that: described upper shell (1) and lower casing (3)
Employing sound transmitting rubber is made.
Ultra-wideband underwater acoustic transducer the most according to claim 3, it is characterised in that: front shroud (201) and back shroud (210)
Adopt and be made of a steel.
7. according to the ultra-wideband underwater acoustic transducer described in any one of claim 1-3, it is characterised in that: five piezoelectric ceramic circular tube
PZT-4 piezoelectric ceramics is used to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610606848.8A CN106131744B (en) | 2016-07-28 | 2016-07-28 | A kind of ultra-wideband underwater acoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610606848.8A CN106131744B (en) | 2016-07-28 | 2016-07-28 | A kind of ultra-wideband underwater acoustic transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106131744A true CN106131744A (en) | 2016-11-16 |
| CN106131744B CN106131744B (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610606848.8A Active CN106131744B (en) | 2016-07-28 | 2016-07-28 | A kind of ultra-wideband underwater acoustic transducer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107465982A (en) * | 2017-06-16 | 2017-12-12 | 北京长城电子装备有限责任公司 | A kind of high-power deepwater wideband transducer |
| CN107509149A (en) * | 2017-08-17 | 2017-12-22 | 陕西师范大学 | A kind of small size large amplitude helical spring low-frequency transducer |
| CN107633837A (en) * | 2017-10-24 | 2018-01-26 | 陕西师范大学 | A kind of periodic structure fluting pipe indulges footpath vibration conversion underwater acoustic transducer and energy-changing method |
| CN110285880A (en) * | 2019-05-10 | 2019-09-27 | 中国船舶重工集团公司第七一五研究所 | A kind of broad band low frequency high sensitivity hydrophone based on sap cavity structure |
| CN110721890A (en) * | 2019-10-25 | 2020-01-24 | 海鹰企业集团有限责任公司 | Light and thin medium-high frequency broadband transduction element |
| CN112509542A (en) * | 2020-11-20 | 2021-03-16 | 山东省科学院海洋仪器仪表研究所 | Underwater acoustic transducer |
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| CN102843637A (en) * | 2012-09-06 | 2012-12-26 | 北京信息科技大学 | Cylindrical transducer with stacked piezoelectric circular tubes with different internal diameters |
| CN104486705A (en) * | 2014-11-04 | 2015-04-01 | 中国船舶重工集团公司第七一五研究所 | Pressure compensation type deep sea hydrophone |
| CN205320288U (en) * | 2015-12-31 | 2016-06-15 | 中国船舶重工集团公司七五○试验场 | Modular transmitter -receiver isolation transducer |
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| US4972390A (en) * | 1989-04-03 | 1990-11-20 | General Instrument Corp. | Stack driven flexural disc transducer |
| US20030235115A1 (en) * | 2000-01-06 | 2003-12-25 | Raymond Porzio | Active housing broadband tonpilz transducer |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107465982A (en) * | 2017-06-16 | 2017-12-12 | 北京长城电子装备有限责任公司 | A kind of high-power deepwater wideband transducer |
| CN107465982B (en) * | 2017-06-16 | 2020-02-11 | 北京长城电子装备有限责任公司 | High-power deep water broadband transducer |
| CN107509149A (en) * | 2017-08-17 | 2017-12-22 | 陕西师范大学 | A kind of small size large amplitude helical spring low-frequency transducer |
| CN107509149B (en) * | 2017-08-17 | 2019-10-08 | 陕西师范大学 | A kind of small size large amplitude helical spring low-frequency transducer |
| CN107633837A (en) * | 2017-10-24 | 2018-01-26 | 陕西师范大学 | A kind of periodic structure fluting pipe indulges footpath vibration conversion underwater acoustic transducer and energy-changing method |
| CN107633837B (en) * | 2017-10-24 | 2020-12-01 | 陕西师范大学 | Longitudinal-radial vibration conversion underwater acoustic transducer of slotted circular tube with periodic structure and transduction method |
| CN110285880A (en) * | 2019-05-10 | 2019-09-27 | 中国船舶重工集团公司第七一五研究所 | A kind of broad band low frequency high sensitivity hydrophone based on sap cavity structure |
| CN110721890A (en) * | 2019-10-25 | 2020-01-24 | 海鹰企业集团有限责任公司 | Light and thin medium-high frequency broadband transduction element |
| CN112509542A (en) * | 2020-11-20 | 2021-03-16 | 山东省科学院海洋仪器仪表研究所 | Underwater acoustic transducer |
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| CN106131744B (en) | 2019-05-03 |
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