CN106131744B - A kind of ultra-wideband underwater acoustic transducer - Google Patents
A kind of ultra-wideband underwater acoustic transducer Download PDFInfo
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- CN106131744B CN106131744B CN201610606848.8A CN201610606848A CN106131744B CN 106131744 B CN106131744 B CN 106131744B CN 201610606848 A CN201610606848 A CN 201610606848A CN 106131744 B CN106131744 B CN 106131744B
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- piezoelectric ceramic
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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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- 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
The present invention provides a kind of ultra-wideband underwater acoustic transducer, underwater acoustic transducer ontology including shell and installation in the housing, underwater acoustic transducer ontology includes five piezoelectric ceramic circular tubes set gradually, it is separated between adj acent piezoelectric ceramics round tube by plastic foam, five piezoelectric ceramic circular tubes and plastic foam are immobilized in the shell after mutually compressing, energy converter is under the excitation of applied voltage signal, mode of oscillation is expanded from inside to outside, radial vibration and outward radiative acoustic wave energy are done so as to cause energy converter, by adjusting the distance of five piezoelectric ceramic circular tube longitudinal arrangements, control the transmitting voltage response value at resonance frequency, show that difference is reduced between one group of adjacent peak valley on frequency response curve, that is transmitting voltage response rises and falls reduction in working band, transmitting voltage response amplitude at energy converter disresonance frequence is almost without decline, it realizes The broadening of energy converter working band, overall structure and manufacture craft are simple and at low cost.
Description
Technical field
The invention belongs to underwater acoustic transducer fields, are related to a kind of ultra-wideband underwater acoustic transducer.
Background technique
With continuous utilization of the finite element method in transducer designs, various new theories, new construction the underwater sound change
Energy device emerges one after another, however piezoelectric transducer is still the emphasis of current Study of underwater acoustic transducer.The wherein simple piezoelectricity of structure
Circular pipe type energy converter is using extensively, and the research position important in occupation of underwater acoustic transducer, piezoelectric ceramic circular tube is usually that round tube changes
The inverting element of energy device, the polarization direction of general round tube are divided into radial polarised and high degree of polarization.Round tube energy converter has horizontal nothing
The feature that directive property, receiving sensitivity are high, structure is simple can also usually as low frequency, high-power and broadband underwater acoustic emission sound source
As broadband receiving hydrophone, it is widely used in the fields such as ocean development and geological prospecting.Piezoelectric circular energy converter is general
Using the mode of the radial vibration of piezoelectric ring, emit the narrower bandwidth of response.
In order to broaden the working band of this energy converter, designers propose the scheme of different solutions, traditional side
Method is the coupling using the sap cavity of piezoelectric ring and the mode of radial vibration, since the resonance frequency of sap cavity is lower, is suitble to low frequency
Energy converter also uses the various mode of oscillations of principle reasonable arrangement of multi-mode coupling, this to open up wide band mode and accurately to control
The spacing of two kinds of system or a variety of mode of oscillations.Utilize the mode and high-order radial vibration mode of the radial vibration of piezoelectric circular
Coupling is also able to achieve the broadband emission of round tube energy converter, has certain horizontal directivity with the energy converter of this principle production, breathes out
The scholar of your shore engineering university proposes to be set using the radial vibration mode of piezoelectric circular and the coupled vibrations of flexural vibration mode
The high frequency wide-band transducer that a kind of bandwidth is 40-80kHz, fluctuating ± 4dB is counted, current energy converter is all utilization or more in a word
Various technologies and its method combined realize underwater acoustic transducer in wide band frequency ranges of operation.
The narrower bandwidth of its transmitting response of the wide-band transducer of the prior art, some energy converters need to add matching layer,
Structure is complicated.
Summary of the invention
The invention patent is designed to provide a kind of ultra-wideband underwater acoustic transducer, and the energy converter is various sizes of by three groups
The working band of five axially aligned compositions of piezoelectric ceramic circular tube, every group of energy converter is different, the hair of three groups of piezoelectric ceramic circular tubes
The sound field mutually transmitting voltage response of superimposed formation energy converter in a wider range is penetrated, keeps the fluctuating of transmitting voltage response smaller,
Realize underwater acoustic transducer in wider frequency ranges of operation.
In order to achieve the above object, the present invention uses following scheme:
A kind of ultra-wideband underwater acoustic transducer, the underwater acoustic transducer ontology including shell and installation in the housing, underwater sound transducing
Device ontology includes five piezoelectric ceramic circular tubes set gradually, and the polarization direction of five piezoelectric ceramic circular tubes is identical, is radial direction
Direction is separated by plastic foam between adj acent piezoelectric ceramics round tube, and five piezoelectric ceramic circular tubes and plastic foam mutually compress
After be immobilized in the shell, five piezoelectric ceramic circular tube sides are separately connected positive wire, and the other side is separately connected negative wire, just
Pole lead and negative wire lead to hull outside, by adjusting the distance of five piezoelectric ceramic circular tube longitudinal arrangements, reduce transducing
Transmitting voltage response of the device in working band rises and falls, and realizes energy converter in the frequency ranges of operation of ultra-wide.
Further, the underwater acoustic transducer ontology further includes front shroud and back shroud, coarctate five piezoelectric ceramics
Round tube and plastic foam are compressed by front shroud and back shroud, and by running through five piezoelectric ceramic circular tubes, plastic foam, front shrouds
It is fixed with the screw rod and bottom nut of back shroud；The groove that negative wire and positive wire pass through screw rod side leads to hull outside.
Further, the shell includes upper shell and lower casing, and the upper shell surrounds upper cover plate, before lower casing surrounds
Cover board, five piezoelectric ceramic circular tubes and plastic foam, form sealing structure between upper shell and lower casing.
Further, the upper shell is cone, and lower casing is cylindrical shell.
Further, the upper shell and lower casing are made of sound transmitting rubber.
Further, front shroud and back shroud, which are adopted, is made of a steel.
Further, five piezoelectric ceramic circular tubes are made of PZT-4 piezoelectric ceramics.
The invention has the following advantages that
Ultra-wideband underwater acoustic transducer of the invention includes the underwater acoustic transducer ontology of shell and installation in the housing, and the underwater sound changes
Energy device ontology includes five piezoelectric ceramic circular tubes set gradually, is separated between adj acent piezoelectric ceramics round tube by plastic foam,
Five piezoelectric ceramic circular tubes and plastic foam are immobilized in the shell after mutually compressing, excitation of the energy converter in applied voltage signal
Under, mode of oscillation is expanded from inside to outside, does radial vibration so as to cause energy converter and radiative acoustic wave energy, plastic foam are outward
Two adjacent piezoelectric ceramic circular tubes are separated, realize energy converter intermediate supports and fixation.By adjusting five piezoelectric ceramics
The distance of round tube longitudinal arrangement and the diameter of piezoelectric ceramic circular tube control the transmitting voltage response value at resonance frequency, show
Difference is reduced between one group of adjacent peak valley on frequency response curve, i.e. transmitting voltage response rises and falls reduction in working band, is changed
Transmitting voltage response amplitude at energy device disresonance frequence realizes the broadening of energy converter working band almost without decline.
The present invention is compared with other wide-band transducers, and without adding matching layer, element used is relatively common, and price also all compares
Less expensive, overall structure and manufacture craft are simple and at low cost.
Detailed description of the invention
Fig. 1 is the diagrammatic cross-section of the embodiment of the present invention；
Fig. 2 is the ultra-wideband underwater acoustic transducer diagrammatic cross-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 graph of ultra-wideband underwater acoustic transducer of the present invention；
In figure: the upper shell of 1-, the novel energy converter of 2-, 3- lower casing, 201- front shroud, 202- plastic foam one, 203- pressure
Electroceramics round tube 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- rear cover, 208- screw rod, 209- bottom nut, 216- negative wire, 217- positive wire.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, rather than whole embodiments, is based on
Embodiment in the present invention, those of ordinary skill in the art just without making creative work it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
With reference to Fig. 1 and Fig. 2, the ultra-wideband underwater acoustic transducer of the present embodiment includes upper 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 pottery
Porcelain round 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, back shroud 210, screw rod 208, bottom nut 209, negative wire 216, positive wire 217, lower casing 3,
The 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 208 rear and front end of screw rod, and 208 two sides of screw rod are fluted, and 208 bottom of screw rod is equipped with bottom nut.
Piezoelectric ceramic circular tube 1, plastic foam 2 204, piezoelectric ceramic circular tube 2 205, plastic foam 3 206, piezoelectricity
Ceramic round tube 3 215, plastic foam 4 207, piezoelectric ceramic circular tube 4 214, plastic foam 5 213, piezoelectric ceramic circular tube 5 212
Alternating longitudinally forms.Plastic foam 1 is mounted between the front shroud 201 and piezoelectric ceramic circular tube 1, plastics
Foam 6 211 is mounted between the back shroud 210 and piezoelectric ceramic circular tube 5 212, and the positive wire 217 is separately connected pressure
Electroceramics round tube 1, piezoelectric ceramic circular tube 2 205, piezoelectric ceramic circular tube 3 215, piezoelectric ceramic circular tube 4 214, piezoelectricity pottery
5 212 inside of porcelain round tube, the negative wire 216 are separately connected on the outside of five piezoelectric ceramic circular tubes.
Three resonance frequencies of ultra-wideband underwater acoustic transducer are mainly the pressure by the first two piezoelectric ceramic circular tube and centre
Electroceramics round tube controls, and the first two piezoelectric ceramic circular tube and most latter two piezoelectric ceramic circular tube are piezoelectric ceramic circular tubes of the same race,
Distance by adjusting the longitudinal arrangement of this five piezoelectric ceramic circular tubes can change bandwidth of operation, so that the bandwidth of energy converter becomes
Width, and the fluctuating of transmitting voltage response is smaller.
With reference to Fig. 1, the present embodiment further includes shell 1 and lower casing 3, front shroud 201, back shroud 210, spiral shell on sound transmitting rubber
Bar 208 installs screw rod 208 wherein the shell is located at except the ultra-wideband underwater acoustic transducer that Fig. 1 is installed in it；
The front shroud 201 and back shroud 210, which are located in the shell portion, to be closed energy converter and passes through nut and fix energy converter；Institute
State the whole that sound transmitting rubber is located at energy converter.
Further, upper shell 1 is in conical, the outside cylindrical up and down for being fixed on Fig. 1 shown device of lower casing 3, outside
Shell is close to the outside of energy converter, and shell is provided with cylindrical screw rod 208 and keeps energy converter balance, and 201 middle position of front shroud is opened
There is circular hole, is mounted on inside shell 1.
The 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 is realized using PZT-4 ceramics.
The positive wire 217 is separately connected piezoelectric ceramic circular tube 1, piezoelectric ceramic circular tube 2 205, piezoelectric ceramics circle
Pipe 3 215, piezoelectric ceramic circular tube 4 214, the side inside piezoelectric ceramic circular tube 5 212 be then each passed through screw rod 208 and before
Circular hole among cover board 201, negative wire 216 are separately connected on the outside of five piezoelectric ceramic circular tubes, are each passed through 208 side of screw rod
Groove, the circular hole among front shroud 201 is connected with driving source.
The present invention realizes that the principle of energy converter working band broadening is: by adjusting five piezoelectric ceramic circular tube longitudinal arrangements
The distance between, the transmitting voltage response value at the resonance frequency that piezoelectric ceramic circular tube is controlled is reduced, shows frequency response
Difference reduces (trench shoals between two peaks) between one group of adjacent peak valley on curve, realizes ultra-wideband underwater acoustic transducer transmitting electricity
The broadening of reduction and working band that pressure response rises and falls.
Fig. 3 is the internal screw figure of the ultrasonic transducer of type of the present invention, and the two sides of screw rod are fluted.
Fig. 4 is the transmitting voltage response curve graph of the ultra-wideband underwater acoustic transducer of type of the present invention, is existed by the bright energy converter of chart
It is 12.7dB that transmitting voltage response, which rises and falls, in 14kHz-131kHz working band, and maximum transmitting voltage response is 152.7dB, bandwidth
Obviously widen.
Claims (7)
1. a kind of ultra-wideband underwater acoustic transducer, it is characterised in that: including shell and installation underwater acoustic transducer ontology in the housing,
Underwater acoustic transducer ontology is formed by three groups of various sizes of five piezoelectric ceramic circular tubes are axially aligned, five piezoelectric ceramic circular tubes
Outer diameter be gradually reduced in axial direction by inward at both ends side, the working band of every group of energy converter is different, three groups of piezoelectric ceramic circular tubes
Emit the sound field mutually transmitting voltage response of superimposed formation energy converter in a wider range, the polarization side of five piezoelectric ceramic circular tubes
To identical, it is radial direction, is separated between adj acent piezoelectric ceramics round tube by plastic foam, five piezoelectric ceramic circular tubes and modeling
Strand foam is immobilized in the shell after mutually compressing, and five piezoelectric ceramic circular tube sides are separately connected positive wire (217), the other side
It is separately connected negative wire (216), positive wire (217) and negative wire (216) lead to hull outside, press by adjusting five
The distance of electroceramics round tube longitudinal arrangement and the diameter of piezoelectric ceramic circular tube control the transmitting voltage response value at resonance frequency,
It reduces transmitting voltage response of the energy converter in working band to rise and fall, realizes energy converter in the frequency ranges of operation of ultra-wide.
2. ultra-wideband underwater acoustic transducer according to claim 1, it is characterised in that: the underwater acoustic transducer ontology further includes
Front shroud (201) and back shroud (210), coarctate five piezoelectric ceramic circular tubes and plastic foam pass through front shroud (201)
It is compressed with back shroud (210), and by running through five piezoelectric ceramic circular tubes, plastic foam, front shroud (201) and back shroud (210)
Screw rod (208) and bottom nut (209) it is fixed；Negative wire (216) and positive wire (217) pass through screw rod (208) side
Groove lead to hull outside.
3. ultra-wideband underwater acoustic transducer according to claim 2, it is characterised in that: the shell include upper shell (1) and
Lower casing (3), the upper shell (1) surround upper cover plate (201), and lower casing (3) surrounds front shroud (201), five piezoelectricity potteries
Porcelain round tube and plastic foam form sealing structure between upper shell (1) and lower casing (3).
4. ultra-wideband underwater acoustic transducer according to claim 3, it is characterised in that: the upper shell (1) is cone, under
Shell (3) is cylindrical shell.
5. ultra-wideband underwater acoustic transducer according to claim 3, it is characterised in that: the upper shell (1) and lower casing (3)
It is made of sound transmitting rubber.
6. ultra-wideband underwater acoustic transducer according to claim 3, it is characterised in that: front shroud (201) and back shroud (210)
It adopts and is made of a steel.
7. ultra-wideband underwater acoustic transducer according to claim 1-3, it is characterised in that: five piezoelectric ceramic circular tubes
It is made of PZT-4 piezoelectric ceramics.
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 |
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| Publication Number | Publication Date |
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| CN106131744A CN106131744A (en) | 2016-11-16 |
| CN106131744B true CN106131744B (en) | 2019-05-03 |
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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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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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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| US4972390A (en) * | 1989-04-03 | 1990-11-20 | General Instrument Corp. | Stack driven flexural disc transducer |
| CN101121165A (en) * | 2007-09-04 | 2008-02-13 | 浙江师范大学 | Piezoelectric ultrasonic transducer |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2001050811A1 (en) * | 2000-01-06 | 2001-07-12 | Lockheed Martin Corporation | Active housing broadband tonpilz transducer |
| US6671380B2 (en) * | 2001-02-26 | 2003-12-30 | Schlumberger Technology Corporation | Acoustic transducer with spiral-shaped piezoelectric shell |
| CN102843637B (en) * | 2012-09-06 | 2015-04-15 | 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 |
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2016
- 2016-07-28 CN CN201610606848.8A patent/CN106131744B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4972390A (en) * | 1989-04-03 | 1990-11-20 | General Instrument Corp. | Stack driven flexural disc transducer |
| CN101121165A (en) * | 2007-09-04 | 2008-02-13 | 浙江师范大学 | Piezoelectric ultrasonic transducer |
| 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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| CN106131744A (en) | 2016-11-16 |
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