WO2006015646A1 - Elektroakustische wandleranordnung für unterwasserantennen - Google Patents
Elektroakustische wandleranordnung für unterwasserantennen Download PDFInfo
- Publication number
- WO2006015646A1 WO2006015646A1 PCT/EP2005/006383 EP2005006383W WO2006015646A1 WO 2006015646 A1 WO2006015646 A1 WO 2006015646A1 EP 2005006383 W EP2005006383 W EP 2005006383W WO 2006015646 A1 WO2006015646 A1 WO 2006015646A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transducer
- metal plate
- plate
- transducer elements
- layer
- Prior art date
Links
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
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
-
- 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
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
- G10K11/006—Transducer mounting in underwater equipment, e.g. sonobuoys
- G10K11/008—Arrays of transducers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/39—Arrangements of sonic watch equipment, e.g. low-frequency, sonar
-
- 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
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
- G10K11/006—Transducer mounting in underwater equipment, e.g. sonobuoys
-
- 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
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/20—Reflecting arrangements
- G10K11/205—Reflecting arrangements for underwater use
Definitions
- the invention relates to an electroacoustic transducer assembly for underwater antennas of the genus defined in the preamble of claim 1.
- the reflector is a spring-mass system of a mass formed by the metal plate and a sound-soft spring formed by the foam plate.
- the foam board is designed as a flexible elastic material plate made of polyurethane foam.
- the metal plate is designed to suppress interfering self-resonances in sandwich construction with a sandwiched between two metal sheets, bending wave dampening film.
- the individual transducer elements of the transducer assembly are designed as hydrophones. To produce the transducer assembly of the reflector and a plug for connecting the hydrophones are placed in a mold. The hydrophones are glued on spacers to maintain a tolerance-accurate distance from the reflector.
- the spacers are accurately positioned on the reflector, on the metal plate, set, for example, by small depressions in the metal plate or by gluing.
- the spacers are made of the same material as the Hartumguss, preferably made of Polyurethane exists. After pouring the polyurethane into the mold and after its hardening the entire • Hiking arrangement of the mold is removed.
- the invention has for its object to provide a transducer assembly of the type mentioned, which has a low weight with unchanged, good performance data to increase their applications and applications.
- the transducer assembly according to the invention has the advantage that an enormous weight saving is achieved by the honeycomb structure of the metal plate, in particular aluminum plate, with the same flexural rigidity of the transducer assembly, as is ensured with a solid plate. Due to the arrangement of the thin double layer of a foam layer on the one hand and a material layer with a small characteristic impedance or low density, preferably cork layer, on the other hand, despite the honeycomb structure of the metal plate, the ideal reflector strongly approximated reflector is achieved with a very good forward / reverse ratio. Compared to a design with missing double layer between honeycomb structure and foam plate, the forward / reverse ratio is increased by more than 25 dB at a frequency range of the transducer array of 10 - 30 kHz.
- the transducer assembly is well-suited for incorporation into autonomous or remote-controlled underwater vehicles, for example as a receiver. and / or transmit antenna of a mine sonar for the detection of sediments flushed in the sediment.
- the foam sheet is replaced by an air-filled cavity.
- the increase of the forward / reverse ratio by the double layer is even more than 45 dB, based on the same frequency range of the transducer arrangement of 10 - 30 kHz.
- the transducer elements with spacers made of plastic are attached to the metal plate.
- the height of the spacers is such that the distance of the acoustic center of the transducer elements from the reflector is small compared to the central wavelength ⁇ of a broadband transducer array and smaller than H of the wavelength ⁇ of a narrow-band transducer array. This ensures that the reflected sound on the reflector is structurally superimposed on the sound received or emitted directly by the transducer elements.
- the pointing to the transducer elements surface of the metal plate is covered with a thin layer of a material whose characteristic impedance is much smaller than that of water, preferably 1 kg / m 2 s approximated.
- This material layer which has a fairly low density and preferably al.s Cork layer is executed acts on the transducer elements as an ideal reflector, whereby the receiving sensitivity of the receiver operated transducer assembly is increased by up to 6 dB compared to the transducer elements in the free field. The same applies to the transmission or the efficiency of the transducer assembly when it is operated as an acoustic transmitter.
- Fig. 1 is a longitudinal section of an electro-acoustic
- FIG. 2 is a perspective view of an in
- Fig. 3 is a same view as in Fig. 1 of a modified transducer assembly.
- Underwater antenna has, for example, three transducer elements 11 and arranged in the direction of sound incidence behind the transducer elements 11 reflector 12.
- the transducer elements 11 can be both transmit transducers and receive transducers or hydrophones. In the latter case, the hydrophones are designed as spherical ceramics, preferably as ceramic hollow spheres, as z. B. in US 6,029,113 A are described.
- the transducer elements 11 and the reflector 12 are in an acoustically transparent Hartumguss 13 of a Can be processed by casting, embedded in substantially Zähelas.tician elastomer. As the elastomer, polyurethane (PUR) is exemplified. For the sake of clarity, the illustrations of the electrical connections which are necessarily guided to the transducer elements 11 are dispensed with.
- the reflector 12 comprises a transducer element 11 facing metal plate 13 in honeycomb structure and facing away from the transducer elements 11 foam plate 14 made of pressure-resistant foam.
- the metal plate 13 with honeycomb structure is preferably made of light metal, such as aluminum.
- a thin double layer 15 is arranged, which comprises a voltage applied to the metal plate 13 foam layer 16 of pressure-resistant foam and a voltage applied to the foam plate 14 material layer 17, which consists of a material whose characteristic impedance is much smaller than which is of water, so has a very low density.
- Cork is preferably used as material for the material layer 17, so that only cork layer 17 will be discussed below.
- the double layer 15 is made relatively thin compared to the foam plate 14.
- the layer thickness of the foam layer 16 is 4 mm and the layer thickness of the cork layer 17 is 2 mm.
- the layer thickness of the foam plate 14 made of pressure-resistant foam is selected to be 15-20 mm.
- the transducer elements 11 are adhered to a tolerance-accurate distance from the reflector 12 each on a spacer 18.
- the spacers 18 are fixed in position to the metal plate 13 with honeycomb structure, for example, by small depressions in the metal plate 13 or by gluing.
- the spacers 18 are preferably made of the same material as the hard encapsulation 20.
- the pointing to the transducer elements 11 surface of the metal plate 13 is covered with a thin material layer 19 of a material whose characteristic impedance is much smaller than that of water.
- cork is also used as the low-density layer material in the material layer 19.
- the layer thickness of the cork layer 19 is for example about 2 mm.
- the cork layer 19 is recessed in the region of the spacers 18.
- the height of the spacers 18 is selected so that the distance of the acoustic center of the hydrophones from the metal plate 13 for a broadband transmitting or receiving transducer assembly is small compared to the central wavelength ⁇ .
- the height of the spacers 18 is less than a quarter of the wavelength ⁇ , that is smaller ⁇ / 4, selected.
- the transducer arrangement shown in longitudinal section in FIG. 3 is modified in comparison with the previously described transducer arrangement in that the foam plate of pressure-resistant material is replaced by a closed cavity 21.
- a U-shaped frame 22 having a base plate 221 and a circumferential frame leg 222 is provided.
- the frame 22 is made of a rigid material, for example of a light metal, in particular aluminum, or a pressure-resistant plastic or foam.
- the cavity 21 is preferably filled with air and serves in addition to the increase of the forward / reverse ratio in addition to the inclusion of electronic and electrical components for connection to the transducer elements eleventh
- the Hartumguss 20 enclosing the transducer elements 11 and the reflector 12 is not executed as in Fig. 1 as a cuboid body, but tracked in the area of the sound incidence direction of the surface contour of the spherical transducer elements 11 by there hemispherical bulges cover a hemisphere portion of the transducer with approximately constant material thickness.
- a larger opening angle of the antenna arrangement is achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Radar, Positioning & Navigation (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Support Of Aerials (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/658,862 US7542378B2 (en) | 2004-08-05 | 2005-06-15 | Electroacoustic transducer arrangement for underwater antennas |
AT05751707T ATE470926T1 (de) | 2004-08-05 | 2005-06-15 | Elektroakustische wandleranordnung für unterwasserantennen |
EP05751707A EP1774509B1 (de) | 2004-08-05 | 2005-06-15 | Elektroakustische wandleranordnung für unterwasserantennen |
AU2005270543A AU2005270543B2 (en) | 2004-08-05 | 2005-06-15 | Electroacoustic transducer arrangement for underwater antennas |
DE502005009729T DE502005009729D1 (de) | 2004-08-05 | 2005-06-15 | Elektroakustische wandleranordnung für unterwasserantennen |
IL179948A IL179948A0 (en) | 2004-08-05 | 2006-12-10 | Electroacoustic transducer arrangement for underwater antennas |
NO20071211A NO20071211L (no) | 2004-08-05 | 2007-03-05 | Elektroakustisk transduserarrangement for undervannsantenner |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004038032.5 | 2004-08-05 | ||
DE102004038032A DE102004038032A1 (de) | 2004-08-05 | 2004-08-05 | Elektroakustische Wandleranordnung für Unterwasserantennen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006015646A1 true WO2006015646A1 (de) | 2006-02-16 |
Family
ID=35149090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/006383 WO2006015646A1 (de) | 2004-08-05 | 2005-06-15 | Elektroakustische wandleranordnung für unterwasserantennen |
Country Status (10)
Country | Link |
---|---|
US (1) | US7542378B2 (de) |
EP (1) | EP1774509B1 (de) |
KR (1) | KR20070046796A (de) |
AT (1) | ATE470926T1 (de) |
AU (1) | AU2005270543B2 (de) |
DE (2) | DE102004038032A1 (de) |
IL (1) | IL179948A0 (de) |
NO (1) | NO20071211L (de) |
WO (1) | WO2006015646A1 (de) |
ZA (1) | ZA200700856B (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7542378B2 (en) * | 2004-08-05 | 2009-06-02 | Atlas Elektronik Gmbh | Electroacoustic transducer arrangement for underwater antennas |
KR101221737B1 (ko) | 2006-12-21 | 2013-01-11 | 아틀라스 엘렉트로닉 게엠베하 | 수중 안테나 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8027224B2 (en) * | 2009-11-11 | 2011-09-27 | Brown David A | Broadband underwater acoustic transducer |
CN116331456B (zh) * | 2023-03-17 | 2023-11-24 | 中国科学院声学研究所 | 一种用于无人潜航器的舷侧阵组件 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4669573A (en) * | 1985-02-25 | 1987-06-02 | The United States Of America As Represented By The Secretary Of The Navy | Underwater acoustic baffle enhancer |
DE3635364A1 (de) * | 1986-10-17 | 1988-04-28 | Fraunhofer Ges Forschung | Gruppenstrahler |
EP0654953A1 (de) * | 1993-11-23 | 1995-05-24 | STN ATLAS Elektronik GmbH | Elektroakustische Wandleranordnung |
EP1249827A1 (de) * | 2001-04-12 | 2002-10-16 | Thales | Schallsäule und zylindrische Antenne für ein passives Sonargerät, welches eine solche Schallsäule verwendet |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4964091A (en) * | 1970-10-05 | 1990-10-16 | The United States Of America As Represented By The Secretary Of The Navy | Electroacoustic transducer |
FR2342612A1 (fr) * | 1976-02-27 | 1977-09-23 | France Etat | Antennes acoustiques a reflecteur a large bande passante |
DE4227194A1 (de) * | 1992-08-17 | 1994-02-24 | Claas Ohg | Selbstfahrende Ballenpresse für auf dem Feld angebaute Pflanzen |
DE10119867B4 (de) * | 2001-04-24 | 2005-10-13 | Atlas Elektronik Gmbh | Unterwasserantenne |
DE10323493B3 (de) * | 2003-05-23 | 2004-07-15 | Atlas Elektronik Gmbh | Unterwasserantenne |
US7598651B2 (en) * | 2004-03-12 | 2009-10-06 | Sri International | Mechanical meta-materials |
DE102004037987A1 (de) * | 2004-08-05 | 2006-02-23 | Atlas Elektronik Gmbh | Elektroakustische Unterwasserantenne |
DE102004038032A1 (de) * | 2004-08-05 | 2006-02-23 | Atlas Elektronik Gmbh | Elektroakustische Wandleranordnung für Unterwasserantennen |
-
2004
- 2004-08-05 DE DE102004038032A patent/DE102004038032A1/de not_active Withdrawn
-
2005
- 2005-06-15 AT AT05751707T patent/ATE470926T1/de not_active IP Right Cessation
- 2005-06-15 DE DE502005009729T patent/DE502005009729D1/de active Active
- 2005-06-15 AU AU2005270543A patent/AU2005270543B2/en not_active Ceased
- 2005-06-15 EP EP05751707A patent/EP1774509B1/de not_active Not-in-force
- 2005-06-15 KR KR1020067027900A patent/KR20070046796A/ko active IP Right Grant
- 2005-06-15 US US11/658,862 patent/US7542378B2/en not_active Expired - Fee Related
- 2005-06-15 WO PCT/EP2005/006383 patent/WO2006015646A1/de active Application Filing
-
2006
- 2006-12-10 IL IL179948A patent/IL179948A0/en not_active IP Right Cessation
-
2007
- 2007-01-30 ZA ZA200700856A patent/ZA200700856B/en unknown
- 2007-03-05 NO NO20071211A patent/NO20071211L/no not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4669573A (en) * | 1985-02-25 | 1987-06-02 | The United States Of America As Represented By The Secretary Of The Navy | Underwater acoustic baffle enhancer |
DE3635364A1 (de) * | 1986-10-17 | 1988-04-28 | Fraunhofer Ges Forschung | Gruppenstrahler |
EP0654953A1 (de) * | 1993-11-23 | 1995-05-24 | STN ATLAS Elektronik GmbH | Elektroakustische Wandleranordnung |
EP1249827A1 (de) * | 2001-04-12 | 2002-10-16 | Thales | Schallsäule und zylindrische Antenne für ein passives Sonargerät, welches eine solche Schallsäule verwendet |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7542378B2 (en) * | 2004-08-05 | 2009-06-02 | Atlas Elektronik Gmbh | Electroacoustic transducer arrangement for underwater antennas |
KR101221737B1 (ko) | 2006-12-21 | 2013-01-11 | 아틀라스 엘렉트로닉 게엠베하 | 수중 안테나 |
Also Published As
Publication number | Publication date |
---|---|
EP1774509B1 (de) | 2010-06-09 |
IL179948A0 (en) | 2007-05-15 |
AU2005270543A1 (en) | 2006-02-16 |
EP1774509A1 (de) | 2007-04-18 |
ZA200700856B (en) | 2008-07-30 |
US7542378B2 (en) | 2009-06-02 |
DE102004038032A1 (de) | 2006-02-23 |
ATE470926T1 (de) | 2010-06-15 |
AU2005270543B2 (en) | 2010-05-13 |
DE502005009729D1 (de) | 2010-07-22 |
US20080008046A1 (en) | 2008-01-10 |
NO20071211L (no) | 2007-03-05 |
KR20070046796A (ko) | 2007-05-03 |
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