CN106558301A - Low frequency directivity underwater acoustic transducer - Google Patents
Low frequency directivity underwater acoustic transducer Download PDFInfo
- Publication number
- CN106558301A CN106558301A CN201611018768.7A CN201611018768A CN106558301A CN 106558301 A CN106558301 A CN 106558301A CN 201611018768 A CN201611018768 A CN 201611018768A CN 106558301 A CN106558301 A CN 106558301A
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- China
- Prior art keywords
- intermediate mass
- low frequency
- mass block
- radiation
- sections
- Prior art date
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Links
- 230000005855 radiation Effects 0.000 claims abstract description 32
- 239000011159 matrix material Substances 0.000 claims abstract description 3
- 239000000919 ceramic Substances 0.000 claims description 18
- 239000013078 crystal Substances 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 7
- 150000002910 rare earth metals Chemical class 0.000 claims description 6
- 230000010287 polarization Effects 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003321 amplification Effects 0.000 abstract description 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 3
- 230000005284 excitation Effects 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means
Abstract
The present invention provides a kind of low frequency directivity underwater acoustic transducer, including radiation housing, four active matrix driving units and intermediate mass block, described radiation four sections of bent beams of housing and four sections of straight beam alternatings are formed by connecting, the cross sectional shape of the intermediate mass block is square and positioned at the center of radiation housing, four active drives are separately positioned between four sections of straight beams and intermediate mass block, and the distance between intermediate mass block and corresponding straight beam is less than the length of active drive.The present invention forms cardioid directivity or super directive property using the asymmetry of shell structure, vibrates low-frequency effect and amplification effect using buckling of shells, forms low-frequency high-power radiation.Can be applicable to low frequency active sonar, telecommunication, the field such as acoustic propagation research and Marine Geology research.
Description
Technical field
The present invention relates to a kind of transducer, more particularly to a kind of low frequency directivity underwater acoustic transducer.
Background technology
At present, mainly by sound wave, low-frequency sound wave absorption loss water in the seawater is little, propagation distance for the monitoring of marine environment
Far, it is widely used in marine environmental monitoring.Therefore, low-frequency underwater acoustic transducer is used as low frequency underwater sound system
Core component, becomes domestic and international marine acoustics researcher focus of attention.In addition, directional transducer can be significantly increased
Operating distance, improve signal to noise ratio, reduce interference, simultaneously as its orientable transmission information, so as to improve communication reliability and
Confidentiality.Therefore, the research of low frequency directivity transducer is for subsurface communication, Submarine Combat etc. are with important Research Significance.
When the wavelength of sound wave in the medium that the size of a transmitter or receiver can be located with it is comparable, in sound field
Acoustic pressure there is certain distribution with the difference in orientation, so as to form directive property.Therefore, under high frequency background, it is generally directed towards
Property transducer be easier realize.However, under low frequency background, due to transducer size compared with wavelength very little, generally very
It is difficult to form directive property.
Butler et al. develops the IV type flextensional transducers with directive property.This flextensional transducer adopts two groups of piezoelectricity
Heap is driven respectively, and when two groups of excitations of regulation reach an appropriate phase place, transducer radiating surface is motionless, while radiation, is in
Cardioid directivity.
Another realizes that the method for low frequency directivity is to utilize baffle.K.P.B.Moosad does baffle using reverse sound material
Realize directive property IV type flextensional transducer.
Low-frequency transducer directive property is realized typically by special energisation mode.Four side type flextensional transducers can not
By special incentive pattern, directive property sound emission is realized by the convex-concave change of shell structure only.Simultaneously because bending housing tool
There is leverage, it is possible to achieve high-power transmitting, so quadrangle flextensional transducer can realize that low-frequency high-power directive property is sent out
Penetrate.
The content of the invention
The invention aims to realize low frequency cardioid directivity or super directive property and provide a kind of low frequency directivity water
Sonic transducer.
The object of the present invention is achieved like this：Including radiation housing, four active matrix driving units and intermediate mass block, institute
State radiation four sections of bent beams of housing and four sections of straight beam alternatings are formed by connecting, the cross sectional shape of the intermediate mass block is square and position
In the center of radiation housing, four active drives are separately positioned between four sections of straight beams and intermediate mass block, and intermediate mass
Length of the distance between block and corresponding straight beam less than active drive.
Present invention additionally comprises such some architectural features：
1. it is a three recessed convex radiation housings or a three convex recessed housings that housing is radiated described in.
2. active drive described in is stack of piezo crystals, and stack of piezo crystals is formed by N piece rectangular piezoelectric ceramic piece bondings, and N is not
Even number less than 2, rectangular piezoelectric ceramic through-thickness polarization, is provided with an electrode slice between each two piezoelectric ceramic piece.
3. active drive described in includes two pieces of transition blocks, the rareearth super magnetostrictive material being arranged between two pieces of transition blocks
Pole made by material, and pole and corresponding transition block contact position are provided with permanent magnetism piece, also set up in two pieces of transition blocks wired
Ring framework, is wound with coil on coil rack.
Compared with prior art, the invention has the beneficial effects as follows：Asymmetry of the present invention using housing, rather than encourage
The change of mode forms directive property, and this is the new method that a kind of low frequency directivity is formed, namely the present invention is using shell structure
Asymmetry forms cardioid directivity or super directive property, vibrates low-frequency effect and amplification effect using buckling of shells, is formed
Low-frequency high-power is radiated.Present invention can apply to low frequency active sonar, telecommunication, acoustic propagation research and Marine Geology research
In field.
Description of the drawings
Fig. 1 is the quadrangle flextensional transducer structural representation of the radiation housing using three recessed male bend curved beam forms of the present invention
The top view of figure；
Fig. 2 is the quadrangle flextensional transducer structural representation of the radiation housing using three recessed male bend curved beam forms of the present invention
The isometric side view of figure；
Fig. 3 is the quadrangle flextensional transducer structural representation of the radiation housing using a three convex recessed bent beam forms of the present invention
The top view of figure；
Fig. 4 is the quadrangle flextensional transducer structural representation of the radiation housing using a three convex recessed bent beam forms of the present invention
The isometric side view of figure；
Fig. 5 is the electrode connecting line schematic diagram that present invention piezoelectric ceramics does driving element；
Fig. 6 is the driving element cross-sectional view that present invention rareearth super magnetostrictive rod does driving element；
Fig. 7 is that the radiation housing of the present invention realizes directive property using the convex recessed bending housing of three recessed convex bending housings or three
The principle schematic of transmitting；
In accompanying drawing, the implication of each symbol is：Tri- recessed one convex radiation housings of 1-, 2- piezo-electric drive units, 3- center mass
Block, tri- convex one recessed radiation housings of 4-, 5- coil racks, 6- transition blocks, 7- permanent magnetism pieces, 8- rareearth super magnetostrictive rod 9- lines
Circle.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment one：With reference to Fig. 1, Fig. 2, the radiation housing in the present embodiment is by three recessed one convex bent beams and four straight beams
Alternating is formed by connecting, and is processed using aluminum alloy materials.
Driver element in the present embodiment is stack of piezo crystals, as shown in figure 5, stack of piezo crystals 2 is by N piece rectangular piezoelectric ceramic pieces
Bonding is formed, and wherein N is >=2 even number, and the polarization of rectangular piezoelectric ceramic thickness direction lays one between each two piezoelectric ceramic piece
Individual electrode slice, with welding lead, electrode slice is made using red copper material.Adopt between piezoelectric ceramic piece and be connected in parallel.Use epoxy
By piezoelectric ceramic piece and sheet metal alternate composition driving element bonding one by one, in the present embodiment, driving element has four to resin
It is individual.The length of stack of piezo crystals 2 produces radiation housing 1 more than the distance between intermediate mass block 3 and corresponding straight beam inwall in advance
Deformation, makes driver element 2 be fixed on straight beam using the pressure increased produced by the distance for corresponding to straight beam inwall and intermediate mass block 3
Between intermediate mass block 3, it is rigidly connected between stack of piezo crystals 2 and straight beam inwall and intermediate mass block 3.
When transducer works, apply exchange electric load to Piezoelectric Ceramic element 2, as there is piezoelectric ceramics piezoelectricity to imitate
Should so that piezoelectric ceramic stack 2 produces longitudinal extension vibration, by the mechanical couplings with radiation housing 1, excitation radiation housing 1
Flexural vibrations.By the structural asymmetry for radiating housing 1, the directional transmissions of transducer are realized.
Driver element in the present embodiment also pole can replace by made by rare earth ultra-magnetostriction material.As shown in fig. 6,
One group of excitation coil 9 of pole periphery winding, excitation coil 9 are enclosed in closed magnetic circuit made by high-permeability material.Rare earth surpasses
Magnetostriction pole 8 is with the length sum of two transition blocks more than the distance between centroplasm gauge block 3 and corresponding straight beam inwall.Profit
Pole is made to be fixed on straight beam inwall and centroplasm with the pressure increased produced by the distance for corresponding to straight beam inwall and intermediate mass block 3
Between gauge block 3, it is rigidly connected between pole 8 and straight beam inwall and centroplasm gauge block 3.
Intermediate mass block in the present embodiment is the cuboid processed by aluminium alloy.
Radiation housing 1, intermediate mass block 3 in the present embodiment can also adopt stainless in addition to making using aluminium alloy
Steel, steel, titanium alloy, glass fibre or carbon fiber make.
Low frequency directivity flextensional transducer in the present embodiment can also adopt overflow-type structure in addition to using cover plate for sealing.
Embodiment two：As shown in Figure 3,4, in the present embodiment, radiation housing 4 is by three convex one recessed bent beams and four straight beams
Alternating is formed by connecting.Processed using aluminum alloy materials.
Remainder in the present embodiment is same as Example 1.
To sum up, the present invention substantially comprises radiation housing, active drive, intermediate mass block.The housing that radiates is by three
Recessed one is convex or a three convex recessed bent beams are replaced with four straight beams and are formed by connecting.The active drive has four, respectively by
Between mass fix with corresponding straight beam.The intermediate mass block be cuboid, positioned at radiation casing center, its certain one side with it is right
The distance of straight beam inwall is answered less than the length of single active drive.The present invention forms heart using the asymmetry of shell structure
Directive property or super directive property, vibrate low-frequency effect and amplification effect using buckling of shells, form low-frequency high-power radiation.Institute
State driver and be placed in radiation enclosure interior, between straight beam and intermediate mass block, be rigidly connected with both：Radiative envelope is made in advance
Body is deformed, and driver is fixed on directly using the pressure increased produced by the distance for corresponding to straight beam inwall and intermediate mass block
Between beam inwall and intermediate mass block.
Further, the active drive is stack of piezo crystals, and stack of piezo crystals is by N pieces rectangular piezoelectric ceramic piece bonding
It is >=2 even number into, wherein N, the polarization of rectangular piezoelectric ceramic thickness direction lays an electrode between each two piezoelectric ceramic piece
Piece.The length of stack of piezo crystals is more than the distance between intermediate mass block and corresponding straight beam inwall.
Further, the active drive is pole made by rare earth ultra-magnetostriction material, and pole periphery winds one
Group excitation coil, excitation coil are enclosed in closed magnetic circuit made by high-permeability material.Pole length is more than intermediate mass block
The distance between with corresponding straight beam inwall.
The operation principle of the present invention：
As shown in fig. 7, dipole directive property is formed using the anti-phase vibration of upper and lower two radiating surfaces, using the radiation of left and right two
Face in phase vibration forms ' 8 ' font directive property of monopole directive property or homophase, the coefficient result of such four radiating surfaces
It is exactly cardioid directivity or super directive property.
Claims (4)
1. low frequency directivity underwater acoustic transducer, it is characterised in that：Including radiation housing, four active matrix driving units and intermediate mass
Block, four sections of bent beams of the radiation housing and four sections of straight beam alternatings are formed by connecting, the cross sectional shape side of being of the intermediate mass block
Shape and the center positioned at radiation housing, four active drives are separately positioned between four sections of straight beams and intermediate mass block, and in
Between distance between mass and corresponding straight beam less than active drive length.
2. low frequency directivity underwater acoustic transducer according to claim 1, it is characterised in that：The radiation housing is three recessed one
Convex radiation housing or a three convex recessed housings.
3. low frequency directivity underwater acoustic transducer according to claim 2, it is characterised in that：The active drive is piezoelectricity
Brilliant heap, stack of piezo crystals are formed by N piece rectangular piezoelectric ceramic piece bondings, and even numbers of the N not less than 2, and rectangular piezoelectric ceramic is along thickness
Direction polarization, is provided with an electrode slice between each two piezoelectric ceramic piece.
4. low frequency directivity underwater acoustic transducer according to claim 2, it is characterised in that：The active drive includes two
Block transition block, pole made by the rare earth ultra-magnetostriction material being arranged between two pieces of transition blocks, and pole with it is corresponding
Transition block contact position is provided with permanent magnetism piece, is additionally provided with coil rack, coil is wound with coil rack in two pieces of transition blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611018768.7A CN106558301B (en) | 2016-11-17 | 2016-11-17 | Low-frequency directional underwater acoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611018768.7A CN106558301B (en) | 2016-11-17 | 2016-11-17 | Low-frequency directional underwater acoustic transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106558301A true CN106558301A (en) | 2017-04-05 |
| CN106558301B CN106558301B (en) | 2020-11-20 |
Family
ID=58444521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611018768.7A Active CN106558301B (en) | 2016-11-17 | 2016-11-17 | Low-frequency directional underwater acoustic transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106558301B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107403616A (en) * | 2017-07-17 | 2017-11-28 | 哈尔滨工程大学 | A kind of side type flextensional transducer of low frequency framework drive-type four |
| CN107452365A (en) * | 2017-07-17 | 2017-12-08 | 哈尔滨工程大学 | A kind of side type flextensional transducer of directive property four |
| CN108777831A (en) * | 2018-06-05 | 2018-11-09 | 哈尔滨工程大学 | A kind of four side type flextensional transducers of conformal driving |
| CN110058246A (en) * | 2019-05-10 | 2019-07-26 | 苏州静声泰科技有限公司 | A kind of Miniaturized low-frequency underwater acoustic transducer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989010677A1 (en) * | 1986-06-13 | 1989-11-02 | Image Acoustics, Inc. | Flextensional transducer |
| WO2012086180A1 (en) * | 2010-12-20 | 2012-06-28 | Ｎｅｃカシオモバイルコミュニケーションズ株式会社 | Oscillator device and electronic instrument |
| CN103489440A (en) * | 2013-09-29 | 2014-01-01 | 哈尔滨工程大学 | Broadband oscillator cross drive underwater acoustic transducer |
| CN104907240A (en) * | 2015-04-13 | 2015-09-16 | 苏州声之源电子科技有限公司 | Arc array of transducer and preparing method |
| CN105702243A (en) * | 2014-11-28 | 2016-06-22 | 中国科学院声学研究所 | Dual-shell series connection IV type flextensional transducer |
-
2016
- 2016-11-17 CN CN201611018768.7A patent/CN106558301B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989010677A1 (en) * | 1986-06-13 | 1989-11-02 | Image Acoustics, Inc. | Flextensional transducer |
| WO2012086180A1 (en) * | 2010-12-20 | 2012-06-28 | Ｎｅｃカシオモバイルコミュニケーションズ株式会社 | Oscillator device and electronic instrument |
| CN103489440A (en) * | 2013-09-29 | 2014-01-01 | 哈尔滨工程大学 | Broadband oscillator cross drive underwater acoustic transducer |
| CN105702243A (en) * | 2014-11-28 | 2016-06-22 | 中国科学院声学研究所 | Dual-shell series connection IV type flextensional transducer |
| CN104907240A (en) * | 2015-04-13 | 2015-09-16 | 苏州声之源电子科技有限公司 | Arc array of transducer and preparing method |
Non-Patent Citations (1)
| Title |
|---|
| 李宽: "四边型弯张换能器研究", 《万方学位论文》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107403616A (en) * | 2017-07-17 | 2017-11-28 | 哈尔滨工程大学 | A kind of side type flextensional transducer of low frequency framework drive-type four |
| CN107452365A (en) * | 2017-07-17 | 2017-12-08 | 哈尔滨工程大学 | A kind of side type flextensional transducer of directive property four |
| CN107403616B (en) * | 2017-07-17 | 2020-08-07 | 哈尔滨工程大学 | Low-frequency frame driving type quadrilateral flextensional transducer |
| CN107452365B (en) * | 2017-07-17 | 2020-09-11 | 哈尔滨工程大学 | Directional quadrilateral flextensional transducer |
| CN108777831A (en) * | 2018-06-05 | 2018-11-09 | 哈尔滨工程大学 | A kind of four side type flextensional transducers of conformal driving |
| CN110058246A (en) * | 2019-05-10 | 2019-07-26 | 苏州静声泰科技有限公司 | A kind of Miniaturized low-frequency underwater acoustic transducer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106558301B (en) | 2020-11-20 |
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