EP2082612A1 - Dispositif transducteur a ultrasons - Google Patents

Dispositif transducteur a ultrasons

Info

Publication number
EP2082612A1
EP2082612A1 EP07765230A EP07765230A EP2082612A1 EP 2082612 A1 EP2082612 A1 EP 2082612A1 EP 07765230 A EP07765230 A EP 07765230A EP 07765230 A EP07765230 A EP 07765230A EP 2082612 A1 EP2082612 A1 EP 2082612A1
Authority
EP
European Patent Office
Prior art keywords
information
unit
sound
converter device
transducer system
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.)
Withdrawn
Application number
EP07765230A
Other languages
German (de)
English (en)
Inventor
Holger Hanselka
Tobias Melz
Michael Kauba
Dirk Mayer
Björn SEIPEL
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP2082612A1 publication Critical patent/EP2082612A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
    • H04R2440/01—Acoustic transducers using travelling bending waves to generate or detect sound
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion

Definitions

  • the invention relates to a sound converter device, which is preferably suitable for voice output.
  • a greeting card with a loudspeaker which provides a piezoelectric vibration transducer, which is able to implement speech or music information on the greeting card surface in acoustically perceptible vibrations.
  • part of the greeting card surface serves as the loudspeaker diaphragm.
  • the invention has for its object to provide a sound transducer device based on a novel mode of action for sound wave generation, which should be manageable with the simplest possible technical means and the realization of which no elaborate production techniques and process steps are required. Regardless of the dimensions of the sound converter device, the aspect of electromagnetic compatibility should not play any role. In particular, the production costs should be kept low in order to make the novel sound transducer device diverse applications and ultimately also the widest possible distribution.
  • the solution according Schallwandlervoroplasty provides no specially tailored, the sound waves generating membrane surface, but allows the inventive Schallwandlervortechnisch almost any adaptability to preferably flat structures to find the most diverse forms in the general environment are, such as window areas, Cabinet walls, table tops, doors, housing part surfaces made of plastic or sheet metal, to name in non-conclusive form only a few, and their surfaces which are displaceable by means of the solution designed in accordance with sound transducer device in oscillations to produce acoustically perceptible sound waves.
  • the sound transducer device is suitable for releasably fixedly attached to a planar structure, and has the following components for this purpose:
  • An electromechanical transducer system preferably in the form of a planar piezoceramic actuator, which flatly engages with the planar structure via a connecting means, causing it to vibrate Verify applies, releasably firmly connectable.
  • a memory module is provided in which vibration information, for example voice information, which are read out with the aid of a read-out unit and used by a drive unit for vibration excitation of the electromechanical transducer system.
  • the memory module containing the vibration information may be provided separately from the connection means and connected to the electro-mechanical transducer system via the readout and drive unit via a wired or wireless data transmission. Any vibration information newly stored in the memory unit via an interface connected to the memory module, wherein preferably already stored on the memory unit information is overwritten.
  • the interface can be operated by means of cable connection or wireless transmission technology.
  • an energy module is provided which supplies all components of the sound converter device required for generating sound with electrical energy.
  • a preferred embodiment of the sound converter device provides for the formation of the connection means in the form of a planar carrier substrate which, for example, has the shape and size of a check card and is designed as a double-sided adhesive film.
  • the connecting means thus provides a one hand non-positive contact with the planar structure, which is ultimately required for sound wave radiation, on the other hand, the surface structure facing away from the side of the connecting means provides a kind of mounting surface for all components enumerated above.
  • the S ⁇ eichermodui, ⁇ usiese- and control unit preferably in the form of a digital-to-analog converter and a power driver, and the power module in miniaturized as possible construction to have the least possible impact on the connection means inherent elasticity, so that the oscillations of the piezoelectric actuator, which are executed on the basis of the vibration information obtained in the memory module, can be transmitted to the planar structure as loss-free as possible and unadulterated via the connecting means.
  • the memory module integrated on the connecting means furthermore has an interface via which vibration information in the form of voice or music information can be transmitted.
  • the interface can be provided in a conventional manner via a plug connection for connecting a suitably designed connection cable, on the other hand, it is conceivable to realize the interface exclusively on the operating principle of an inductive signal transmission.
  • the energy module required for the power supply is preferably in the form of a rechargeable battery feasible, but is conceivable in alternative, unique position or in combination with a battery or a rechargeable battery, the use of an energy converter, which is able to gain electrical energy from its environment.
  • the vibration information can also be transmitted by wire or wirelessly from an external memory module to the power driver and electromechanical converter, etc.
  • the novel sound converter device should preferably be realized with very inexpensive components and be easily manufactured, so that the sound converter device can be produced as a low-cost product and thus can find a large distribution signal.
  • the imaginable with the Schaiiwandiervoriques uses and applications are diverse, especially as the sound transducer device is completely releasably attachable to almost any flat structures as a completely autonomous unit.
  • the sound converter device can be used in the manner of an electronic note that can be glued to a door, for example, and can reproduce the absence or current location of a person.
  • a switch unit is provided which triggers and / or terminates the vibration excitation with appropriate operation.
  • the switch unit may be formed in the simplest case as a pressure-sensitive contact surface, but also be activated by means of light or speech. However, it is also possible to dispense with such a switch unit, so that the information content contained in the memory module is read out once and completely after sticking to a flat structure and converted into acoustically perceptible sound waves.
  • the sound converter device in the sense described above as a note on the stable cover of a file folder and listen to it stored messages relating to the file case.
  • an information exchange between a dictation machine and the memory module of the sound converter device could be produced via a corresponding connection cable. If there is no dictation machine at hand, an externally connectable microphone via the interface provided on the sound converter device could serve for the direct speech input of information into the memory module.
  • a further example of application of the sound converter device embodied according to the invention is the so-called "audiobook", in which the entire information content of a newspaper or Zeilsdirifi is stored in the memory module of the sound converter device, which can be audibly presented to a flat structure after suitable mounting of the sound converter device
  • an adjustment module can be adaptable in an expanded embodiment variant of the sound converter device, for example via the provided interface, with which information chapters of the "Hörzeitung” corresponding to an input device can be skipped or can be brought to the presentation again.
  • the "Hörzeitung” can either be designed as a complete self-sufficient module with the aforementioned components, or the corresponding text information can be transmitted via the Internet and via an interface into the memory module.
  • the sound converter device can also be formed and used in the form of a quasi-stationary system, for example for purposes of a speaking traffic light, a speaking timetable at suitable information points.
  • the novel sound converter device is shown in a highly schematic manner.
  • the connecting means 3 which is formed as a double-sided adhesive film, for vibrational excitation of a connected to the underside of the connecting means 3 flat structure 1, for example in the form of a window or a door, the following components are applied: An electromechanical transducer system 2, a memory module 4, a Energy module 7 and a readout and drive unit 5, 6.
  • the power module 7 supplies the Memory module 4, the readout and drive unit 5, 6 as well as the electromechanical transducer system 2 with electrical energy.
  • An additionally provided interface 8 makes it possible to provide the storage medium 4 with corresponding information. Moreover, it is possible to apply via the interface 8 corresponding drive units with which it is possible, for example, to skip or re-listen to information contents stored in the memory module 4.
  • a switch unit 10 is provided, with which it is possible to trigger the process of vibration excitation of eiektromechanischen transducer system 2 or terminate.
  • flat structure electromechanical transducer system connection means memory module readout and control unit power module interface energy converter unit switch unit

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

L'invention concerne un dispositif transducteur à ultrasons pouvant être monté de manière fixe mais amovible sur une structure, comprenant : un système transducteur électromécanique (1), assemblé par un moyen de liaison (3) assurant une liaison coopérante entre le système transducteur électromécanique et la structure (1), une unité de commande (6) pour l'activation d'oscillations dudit système transducteur électromécanique (2), sur la base d'informations d'oscillations transmises par le système transducteur électromécanique (2), un module de mémorisation (4) dans lequel les informations d'oscillations peuvent être mémorisées, une unité de lecture destinée à lire les informations d'oscillations de l'unité de mémorisation, une interface (8) qui est reliée avec le module de mémorisation (4) et par l'intermédiaire de laquelle les informations d'oscillations peuvent être transmises au moyen d'un câble de liaison, ou sans câble, lesdites informations servant à l'activation d'oscillations du système transducteur électromécanique (2), ainsi qu'un module d'énergie (7).
EP07765230A 2006-08-18 2007-07-19 Dispositif transducteur a ultrasons Withdrawn EP2082612A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200620013241 DE202006013241U1 (de) 2006-08-18 2006-08-18 Schallwandlervorrichtung
PCT/EP2007/006438 WO2008019747A1 (fr) 2006-08-18 2007-07-19 Dispositif transducteur à ultrasons

Publications (1)

Publication Number Publication Date
EP2082612A1 true EP2082612A1 (fr) 2009-07-29

Family

ID=37562992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07765230A Withdrawn EP2082612A1 (fr) 2006-08-18 2007-07-19 Dispositif transducteur a ultrasons

Country Status (3)

Country Link
EP (1) EP2082612A1 (fr)
DE (1) DE202006013241U1 (fr)
WO (1) WO2008019747A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103718567B (zh) * 2011-07-21 2017-09-08 喜恩吉股份有限公司 安装自共振型发声扬声器的方法
DE102017107958B4 (de) * 2017-04-12 2018-11-15 AIFC Unternehmensförderungsgesellschaft mbH & Co. KG Lautsprecher mit aufrollbarer Membrane
US10631072B2 (en) * 2018-06-25 2020-04-21 Google Llc Actuator for distributed mode loudspeaker with extended damper and systems including the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2115996B (en) * 1981-11-02 1985-03-20 Kramer Kane N Portable data processing and storage system
AU4430001A (en) * 2000-03-18 2001-10-03 Newlands Technology Limited Dual mode audio device
GB2376829A (en) * 2001-04-21 2002-12-24 Michael Andrew Beadman Removable audio exciter system
US20060085653A1 (en) * 2004-10-08 2006-04-20 Apple Computer, Inc. Method and system for transferring data with respect to a portable electronic device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008019747A1 *

Also Published As

Publication number Publication date
DE202006013241U1 (de) 2006-12-07
WO2008019747A1 (fr) 2008-02-21

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