GB2272819A - Electroacoustic transducer - Google Patents

Electroacoustic transducer Download PDF

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Publication number
GB2272819A
GB2272819A GB9323759A GB9323759A GB2272819A GB 2272819 A GB2272819 A GB 2272819A GB 9323759 A GB9323759 A GB 9323759A GB 9323759 A GB9323759 A GB 9323759A GB 2272819 A GB2272819 A GB 2272819A
Authority
GB
United Kingdom
Prior art keywords
electroacoustic transducer
ceramic body
piezoelectric ceramic
external wall
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9323759A
Other versions
GB9323759D0 (en
GB2272819B (en
Inventor
Juergen Hoetzel
Wolfgang Thelen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB9323759D0 publication Critical patent/GB9323759D0/en
Publication of GB2272819A publication Critical patent/GB2272819A/en
Application granted granted Critical
Publication of GB2272819B publication Critical patent/GB2272819B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
    • B06B1/0662—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface
    • B06B1/0666—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface used as a diaphragm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/521—Constructional features
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2015/937—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details
    • G01S2015/938—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details in the bumper area

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

The electroacoustic transducer comprises a piezoelectric ceramic body 1, which is attached on the inside of the external wall 2 of a vehicle, and a limiting means 3 which bounds the vibrating area A which is excited by the piezoelectric ceramic body 1. <IMAGE>

Description

2272819 Electroacoustic transducer
Prior art
The invention is based on an electroacoustic transducer of the generic type of the main claim. German Offenlegungsachrift 3441684 has already disclosed an electroacoustic transducer which is suitable for installation in a vehicle. The electroac oustic transducer comprises a piezoelectric ceramic body which is inserted into an aluminium cap. The front of the aluminium cap serves here as a diaphragm for outputting ultrasonic vibrations of the piezoelectric ceramic body. The electroacoustic transducer is attached in a recess provided in the external wall of the vehicle.
Advantages of the invention In contrast, the electroacoustic transducer according to the invention, having the characterizing features of the main claim, has the advantage that the piezoelectric ceramic body is suitable for direct mounting behind the skin of the body. In this way, the provision of a recess in the external wall of the vehicle is dispensed with. By arranging a limiting means which surrounds the piezoelectric ceramic body, the sound vibration is restricted merely to the surface of the external wall of the vehicle lying inside the limiting means.
By virtue of the measures specified in the subclaims, advantageous further developments and improvements in the electroacoustic transducer disclosed in the main claim are possible. The design of the limiting means in the form of a ring advantageously constitutes a particularly simple means of realization involving low cast in that it is not necessary to modify the external wall of the vehicle for the installation of the electroacoustic R. 25667 transducer and the ring can be attached f or example simply by bonding. By virtue of the ellipsoidal design of the ring, the directional characteristic is changed in a manner which is advantageous for the preferred field of application, which is "a parking aid", since the angle of aperture is increased in the horizontal direction and reduced-in the vertical direction. The excitation of the transducer via the contact with the external wall of the vehicle constitutes a particularly low-cost and spacesaving realization of the electrical connection because only one additional electrical connection line to the electroacoustic transducer has to be provided. The only partial metallization of the surf ace of the piezoelectric ceramic body gives rise to a further advantageous means of influencing the directional characteristic since the radiation of elliptical sound lobes with a large horizontal angle of aperture is excited.
The excitation of the piezoelectric ceramic body on a harmonic of its resonant frequency causes the acoustic lobe to be widened, as a result of which the angle of aperture of the arrangement is increased. The attachment of a damping element around the piezoelectric ceramic body promotes the excitement of the piezoelectric ceramic body on a harmonic on the one hand and reduces the decay time of the ultrasonic vibrations on the other, which constitutes a further advantage. It also proves advantageous to provide the damping element with an ellipsoidal recess since the directional characteristic is also improved by damping the vertical component of the sound lobe more strongly than the horizontal component.
Drawing An exemplary embodiment of the invention is illustrated in the drawing and described in greater detail in the subsequent description. In the drawing:
Figure 1 shows a cross-section through an electroacoustic transducer according to the invention, Figure 2 shows a top view of an electroacoustic transducer according to the invention.
R. 25667 Description of the exemplary embodiment
In Figure 1, the cross-section through an electroacoustic transducer according to the invention is illustrated. A cylindrical piezoelectric ceramic body 1 with two parallel end sides is provided over its entire surf ace on one end side with a metallization 4 and is attached with this end side to the inside of an external wall 2 of a vehicle by means of an electrically conductive bonding agent 6.
The metallization 4 engages around the outer face of the piezoelectric ceramic body 1 over part of its circumference. On the other end side,.the piezoelectric ceramic body 1 is only partially covered with the metallization 4. A partial metallization 10 covers the rest of the area of the other end side without touching the metallization 4. A wire is attached to the partial metallization 10. This wire forms the line S. A limiting means 3 in the f orm of a ring is arranged around the piezoelectric ceramic body 1, which ring is also attached to the inside of the external wall 2 of the vehicle, the internal diameter of the said ring bounding an area A which forms the diaphragm for the vibration of the piezoelectric ceramic body 1. A damping element 7 is provided between the piezoelectric ceramic body 1 and the ring 3. At a further point on the inside of the external wall 2 of the vehicle, a second line 8 is attached in an electrically conductive fashion.
An alternating electric voltage is applied to the piezoelectric ceramic body 1 via the lines 5, 8 and the contact of the piezoelectric ceramic body 1 with the external wall 2 of the vehicle. The piezoelectric ceramic body 1 thus produces mechanical vibrations which it transmits to the external wall 2 as a diaphragm. In this process, the ring 3 bounds the area A of the diaphragm, virtually no vibrations being transmitted to the external wall 2, lying outside the ring 3, of the vehicle because of the large mass of the said ring 3. The damping element 7 which can be formed for example from rubber or foamed material causes the diaphragm vibration to decay rapidly, R. 25667 which is necessary for the diaphragm to come to rest before the sound wave reflected at an object in turn impinges on the diaphragm.
The preferred area of application of the electroacoustic transducer is the radiation and reception of ultrasonic waves for a system for detecting distances from obstacles in order to assist the driver of a vehicle when performing parking manoeuvres.
Figure 2 shows the top view of an electroacoustic transducer according to the invention. The metallization 4 on the piezoelectric ceramic body 1 covers the said transducer on the upper end side only in the form of two ellipsoidal areas inscribed on the circular outer line of the piezoelectric ceramic body 1, the smaller semi-axes of which areas intersect the centre point of the circular end face of the piezoelectric ceramic body 1. The partial metallization 10 covers the rest of the area of the upper end face without touching the metallization 4. Furthermore, the damping element 7 has an approximately ellipsoidal recess 9. The larger semi-axis of the approximately ellipsoidal recess 9 lies here parallel to the larger semi-axis of the approximately ellipsoidal metallization 4 on the piezoelectric ceramic body 1 and intersects the centre point of the end face of the piezoelectric ceramic body 1 as does the smaller semiaxis of the approximately ellipsoidal recess 9.
The line of intersection I-I designates the section along which Figure 1 is illustrated.
By means of the only partial metallizations 4, 5 which are applied in the manner described above, the shape of the sound lobe which is produced by the piezoelectric ceramic body 1 is influenced in such a way that the angle of aperture of the sound lobe is greater in the horizontal direction than the angle of aperture in the vertical direction. Likewise, the approximately ellipsoidal recess 9 brings about a further restriction of the vertical angle of aperture and a further increase in the horizontal angle of aperture.
Furthermore, the excitation of the piezoelectric Z R. 25667 ceramic body 1 takes place on a harmonic of the resonant frequency of the piezoelectric ceramic body 1. By virtue of additional vibration nodes which are formed in this way,, the diaphragm area A is virtually divided into a plurality of individual diaphragm areas, as a result of which the entire angle of aperture of the sound lobe is increased. In order to use the electroacoustic transducer in the proximity of a vehicle, in particular as a parking aid, a short decay time is important for the electroacoustic transducer to be able to absorb reflected sound waves as mechanical excitation, convert them into corresponding electrical signals and pass them on to the lines 5, 8. Likewise, it is-expedient for this application that the electroacoustic transducer is designed such that the horizontal angle ofaperture of the sound lobe is substantially larger than the vertical angle of aperture of the sound lobe.
Further possible applications not illustrated here are obtained by shaping the ring 3 differently, which ring can be of in particular approximately ellipsoidal design for use for a system as a parking aid, the larger semi-axis of the shape of the ring 3 being arranged vertically with respect to the surface of the ground when installed in a vehicle. Depending on the field of application, the area of the diaphragm can be bounded by other shapes of the ring 3, such as f or example rectangle. The design of the metallization 4 on the upper end f ace in the form of circular segments instead of the ellipsoidal areas illustrated in Figure 2 is also expedient.
R. 25667

Claims (10)

Claims
1. Electroacoustic transducer, in particular ultrasonic transducer, for installation on an external wall of a vehicle, having a piezoelectric ceramic body. characterized in that the piezoelectric ceramic body (1) is attached in an electrically conductive fashion on the inside of the external wall (2) of the vehicle. and in that the piezoelectric ceramic body (1) has on the face lying opposite the bonded face an elec tric contact with a line (5), and in that on the external wall (2) a limiting means (3) is provided which isolates an area (A) which is connected to the piezoelectric ceramic body (1) and is part of the external wall (2) from the rest of the external wall (2) with respect to the vibration behaviour.
2. Electroacoustic transducer according to Claim 1, characterized in that the limiting means (3) is a ring of large mass or high f lexural strength which is arranged around the piezoelectric ceramic body (1) and is attached to the inside of the external wall (2) of the vehicle.
3. Electroacoustic transducer according to Claim 1 or 2, characterized in that the li m i ting means (3) is approximately ellipsoidal in shape, the larger semi-axis of which shape comes to rest vertically when installed in the vehicle.
4. Electroacoustic transducer according to one of Claims 1 to 3, characterized in that the piezoelectric ceramic body (1) has a partial metallization (10) to which an electric line (5) can be connected. and in that the electroacoustic transducer can be made to vibrate via the electric line (5) and via the electrically conductive contact with the external wall (2) of the vehicle.
5. Electroacoustic transducer according to Claim 4, characterized in that the partial metallization (10) covers the piezoelectric ceramic body (1) on the side R. 25667 facing away from the external wall (2) in the form of a central portion of the area which is horizontal in the installed state.
6. Electroacoustic transducer according to one of Claims 4 or 5, characterized in that the piezoelectric ceramic body (1) can be made to vibrate on a harmonic of its resonant frequency.
7. Electroacoustic transducer according to one of Claims 1 to 6, characterized in that a damping element (7) is attached between the piezoelectric ceramic body (1) and the limiting means (3).
8. Electroacoustic transducer according to Claim 7. characterized in that the damping element (7) has an approximately ellipsoidal recess (9), and in that the larger semi-axis of the approximately ellipsoidal ring (3) is parallel to the larger semi-axis of the approximately ellipsoidal recess (9).
9. Electroacoustic transducer according to one of Claims 2 to Si characterized in that the ring (3) has a larger mass than the area A of the external wall (2).
10. An electroacoustic transducer substantially as herein described with reference to the accompanying drawing.
GB9323759A 1992-11-19 1993-11-18 Electroacoustic transducer Expired - Fee Related GB2272819B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4238924A DE4238924A1 (en) 1992-11-19 1992-11-19 Electroacoustic transducer

Publications (3)

Publication Number Publication Date
GB9323759D0 GB9323759D0 (en) 1994-01-05
GB2272819A true GB2272819A (en) 1994-05-25
GB2272819B GB2272819B (en) 1996-07-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB9323759A Expired - Fee Related GB2272819B (en) 1992-11-19 1993-11-18 Electroacoustic transducer

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DE (1) DE4238924A1 (en)
GB (1) GB2272819B (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0724243A1 (en) * 1995-01-26 1996-07-31 Trw Inc. Apparatus and method for producing structural and acoustic vibrations
GB2279745B (en) * 1993-07-09 1996-10-30 Marconi Gec Ltd Acoustic transmitting and receiving unit
WO1997017818A1 (en) * 1995-09-25 1997-05-15 Noise Cancellation Technologies, Inc. Piezo speaker for improved passenger cabin audio systems
GB2317316A (en) * 1996-09-11 1998-03-18 Michael William Hustwitt Ultrasonic object detection system for a vehicle
JP2007283809A (en) * 2006-04-13 2007-11-01 Anden Alarm sound generating device to emit alarm to around vehicle
US7518491B2 (en) 2005-08-01 2009-04-14 Nippon Soken, Inc. Ultrasonic object detector
US7591182B2 (en) 2005-09-22 2009-09-22 Denso Corporation Ultrasonic sensor mounting structure
US7626888B2 (en) 2005-11-21 2009-12-01 Denso Corporation Ultrasound sensor
US7628076B2 (en) 2005-12-08 2009-12-08 Denso Corporation Ultrasound sensor
US7775110B2 (en) 2006-09-22 2010-08-17 Denso Corporation Ultrasonic sensor
US7902968B2 (en) 2005-11-24 2011-03-08 Denso Corporation Obstacle detection device
CN103619654A (en) * 2011-06-20 2014-03-05 法雷奥开关和传感器有限责任公司 Ultrasonic sensor device and apparatus having the same
CN104662603A (en) * 2012-07-26 2015-05-27 大众汽车有限公司 Ultrasonic sensor apparatus
JP2015531058A (en) * 2012-07-24 2015-10-29 ヴァレオ・シャルター・ウント・ゼンゾーレン・ゲーエムベーハー Ultrasonic sensor arrangement including an ultrasonic sensor in a radiator grill, motor vehicle and corresponding method
US9746449B2 (en) 2012-07-24 2017-08-29 Valeo Schatter Und Sensoren GmbH Ultrasonic sensor device having an improved decoupling ring and motor vehicle
US9846225B2 (en) 2012-10-16 2017-12-19 Valeo Schalter Und Sensoren Gmbh Ultrasonic sensor device having a stiffening unit, assembly, motor vehicle, and method for producing an assembly
US9910142B2 (en) 2012-07-24 2018-03-06 Valeo Schalter Und Sensoren Gmbh Ultrasonic sensor device comprising a reinforcement holder, arrangement, motor vehicle and corresponding method

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Publication number Priority date Publication date Assignee Title
ES2131964T3 (en) * 1995-10-20 1999-08-01 Fiat Ricerche SOUND REPRODUCTION SYSTEM FOR VEHICLES.
TW345132U (en) * 1998-03-26 1998-11-11 shi-xiong Li Improved structure for sensor of car backing radar
DE102005046173A1 (en) * 2005-09-27 2007-04-05 Siemens Ag Ultrasound transducer used as a parking aid comprises a U-shaped pot with a hollow cylindrical wall and an end on the front side forming the transducer face and an electromechanical transducer arranged on the inner side
DE102006028213A1 (en) * 2006-06-14 2007-12-20 Valeo Schalter Und Sensoren Gmbh Ultrasonic sensor e.g. motor vehicle ultrasonic sensor, has decoupling unit extending in sections between diaphragm and section of housing, and decoupling unit completely formed from foam material in sections
DE102006038598A1 (en) * 2006-08-17 2008-05-15 Siemens Ag Ultrasound producing device e.g. ultrasonic sensor such as distance sensor, for motor vehicle i.e. passenger car, has ultrasonic transducer mechanically coupled to thin-walled inner side of bumper
JP2008164569A (en) * 2007-01-05 2008-07-17 Nippon Ceramic Co Ltd Ultrasonic sensor
WO2008125260A1 (en) 2007-04-12 2008-10-23 Volkswagen Aktiengesellschaft Invisible ultrasonic sensor
DE102008016558B4 (en) * 2008-04-01 2017-10-19 Hella Kgaa Hueck & Co. Assembly with a bumper and an ultrasonic sensor
DE102010025194B4 (en) 2010-06-26 2021-03-25 Volkswagen Ag Ultrasonic transducer, arrangement of an ultrasonic sensor in a plastic component of a motor vehicle and production of the arrangement
DE102010044996A1 (en) 2010-09-10 2012-03-15 Valeo Schalter Und Sensoren Gmbh Sensor arrangement for vehicle, particularly car, has outer cladding part in which recess is formed and sensor, particularly ultrasonic sensor which has end piece
DE102010047707A1 (en) 2010-10-06 2012-04-12 Volkswagen Ag Method for connecting electro-acoustic transducer with retention device of motor vehicle, involves connecting transducer with retention device where angle is formed between sound waves emitting surface and retention device support surface
DE102011105017A1 (en) 2011-06-20 2012-12-20 Valeo Schalter Und Sensoren Gmbh Ultrasonic sensor device for a vehicle and arrangement with such an ultrasonic sensor device
DE102011121095A1 (en) 2011-12-14 2013-06-20 Valeo Schalter Und Sensoren Gmbh Arrangement with vehicle component e.g. bumper of motor car, has sensor housing in which ultrasonic transducer is arranged regionally and through which sensor is connected to component partially formed from sound absorbing material
DE102012209238A1 (en) * 2012-05-31 2013-12-05 Robert Bosch Gmbh An ultrasonic sensor and apparatus and method for measuring a distance between a vehicle and an obstacle
DE102012106700A1 (en) 2012-07-24 2014-01-30 Valeo Schalter Und Sensoren Gmbh Ultrasonic sensor arrangement with an intermediate element, apparatus and method for producing an ultrasonic sensor arrangement for a motor vehicle
DE102012106694A1 (en) 2012-07-24 2014-02-13 Valeo Schalter Und Sensoren Gmbh An ultrasonic sensor device comprising a stiffening element and a mounting lid, an arrangement and a method for producing such an ultrasonic sensor device
DE102012106692A1 (en) 2012-07-24 2014-01-30 Valeo Schalter Und Sensoren Gmbh Method for mounting ultrasound sensor device in motor vehicle e.g. passenger car, involves connecting ultrasound sensor device with rear side of trim panel, through adhesive compound
DE102012106695A1 (en) 2012-07-24 2014-01-30 Volkswagen Ag Ultrasonic sensor arrangement with a nondestructive repair solution, motor vehicle and corresponding method
DE102012106698A1 (en) 2012-07-24 2014-01-30 Volkswagen Ag Ultrasonic sensor arrangement with a concealed in a trough arranged ultrasonic sensor, motor vehicle and method for producing an ultrasonic sensor assembly
DE102016214449A1 (en) 2016-08-04 2018-02-08 Robert Bosch Gmbh A vehicle trim assembly having a device for reducing propagation of mechanical vibration
DE102018105267B3 (en) 2018-03-07 2019-04-25 Valeo Schalter Und Sensoren Gmbh Damping element for an ultrasonic sensor

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5656779A (en) * 1992-12-04 1997-08-12 Trw Inc. Apparatus and method for producing structural and acoustic vibrations
GB2279745B (en) * 1993-07-09 1996-10-30 Marconi Gec Ltd Acoustic transmitting and receiving unit
EP0724243A1 (en) * 1995-01-26 1996-07-31 Trw Inc. Apparatus and method for producing structural and acoustic vibrations
WO1997017818A1 (en) * 1995-09-25 1997-05-15 Noise Cancellation Technologies, Inc. Piezo speaker for improved passenger cabin audio systems
US6215884B1 (en) * 1995-09-25 2001-04-10 Noise Cancellation Technologies, Inc. Piezo speaker for improved passenger cabin audio system
GB2317316A (en) * 1996-09-11 1998-03-18 Michael William Hustwitt Ultrasonic object detection system for a vehicle
GB2317316B (en) * 1996-09-11 2001-02-21 Michael William Hustwitt Ultrasonic object detection system
US7518491B2 (en) 2005-08-01 2009-04-14 Nippon Soken, Inc. Ultrasonic object detector
US7591182B2 (en) 2005-09-22 2009-09-22 Denso Corporation Ultrasonic sensor mounting structure
US7626888B2 (en) 2005-11-21 2009-12-01 Denso Corporation Ultrasound sensor
US7902968B2 (en) 2005-11-24 2011-03-08 Denso Corporation Obstacle detection device
US7628076B2 (en) 2005-12-08 2009-12-08 Denso Corporation Ultrasound sensor
JP2007283809A (en) * 2006-04-13 2007-11-01 Anden Alarm sound generating device to emit alarm to around vehicle
US7775110B2 (en) 2006-09-22 2010-08-17 Denso Corporation Ultrasonic sensor
CN103619654A (en) * 2011-06-20 2014-03-05 法雷奥开关和传感器有限责任公司 Ultrasonic sensor device and apparatus having the same
CN103619654B (en) * 2011-06-20 2016-06-01 法雷奥开关和传感器有限责任公司 Ultrasonic sensor device and apparatus having the same
JP2015531058A (en) * 2012-07-24 2015-10-29 ヴァレオ・シャルター・ウント・ゼンゾーレン・ゲーエムベーハー Ultrasonic sensor arrangement including an ultrasonic sensor in a radiator grill, motor vehicle and corresponding method
US9488727B2 (en) 2012-07-24 2016-11-08 Valeo Schalter Und Sensoren Gmbh Ultrasonic sensor arrangement comprising an ultrasonic sensor in the radiator grill, motor vehicle and corresponding method
US9746449B2 (en) 2012-07-24 2017-08-29 Valeo Schatter Und Sensoren GmbH Ultrasonic sensor device having an improved decoupling ring and motor vehicle
US9910142B2 (en) 2012-07-24 2018-03-06 Valeo Schalter Und Sensoren Gmbh Ultrasonic sensor device comprising a reinforcement holder, arrangement, motor vehicle and corresponding method
CN104662603A (en) * 2012-07-26 2015-05-27 大众汽车有限公司 Ultrasonic sensor apparatus
US9846225B2 (en) 2012-10-16 2017-12-19 Valeo Schalter Und Sensoren Gmbh Ultrasonic sensor device having a stiffening unit, assembly, motor vehicle, and method for producing an assembly

Also Published As

Publication number Publication date
DE4238924A1 (en) 1994-05-26
GB9323759D0 (en) 1994-01-05
GB2272819B (en) 1996-07-03

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