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EP0251599A3 - Acoustic transducer - Google Patents

Acoustic transducer Download PDF

Info

Publication number
EP0251599A3
EP0251599A3 EP87305474A EP87305474A EP0251599A3 EP 0251599 A3 EP0251599 A3 EP 0251599A3 EP 87305474 A EP87305474 A EP 87305474A EP 87305474 A EP87305474 A EP 87305474A EP 0251599 A3 EP0251599 A3 EP 0251599A3
Authority
EP
European Patent Office
Prior art keywords
acoustic transducer
piezoelectric material
construction
allow
relatively low
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Withdrawn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
EP87305474A
Other languages
German (de)
French (fr)
Other versions
EP0251599A2 (en
Inventor
David Graham Flavell
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.)
BAE Systems Electronics Ltd
Original Assignee
Plessey Overseas Ltd
GEC Marconi Ltd
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 Plessey Overseas Ltd, GEC Marconi Ltd filed Critical Plessey Overseas Ltd
Publication of EP0251599A2 publication Critical patent/EP0251599A2/en
Publication of EP0251599A3 publication Critical patent/EP0251599A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B06B1/0688—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 with foil-type piezoelectric elements, e.g. PVDF
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

An acoustic transducer l comprises a piezoelectric material 4 having a linear shape and which is arranged in the form of a flat spiral within a body 2 of encapsulant material. The piezoelectric material may be a polyvinylidine fluoride coaxial cable and this thus can allow the construction of a high performance planar hydrophone at relatively low cost.
EP87305474A 1986-06-19 1987-06-19 Acoustic transducer Withdrawn EP0251599A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8614940 1986-06-19
GB8614940A GB2191909B (en) 1986-06-19 1986-06-19 Acoustic transducer

Publications (2)

Publication Number Publication Date
EP0251599A2 EP0251599A2 (en) 1988-01-07
EP0251599A3 true EP0251599A3 (en) 1989-04-26

Family

ID=10599709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87305474A Withdrawn EP0251599A3 (en) 1986-06-19 1987-06-19 Acoustic transducer

Country Status (2)

Country Link
EP (1) EP0251599A3 (en)
GB (1) GB2191909B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2256111B (en) * 1991-04-11 1995-02-01 Univ Southampton Distributed sensors for active vibration control
CN2369412Y (en) * 1997-02-04 2000-03-15 焦秉立 Curved piezoelectric vibrator
GB2519001B (en) 2009-05-27 2015-09-02 Silixa Ltd Method and apparatus for optical sensing
CN109005491B (en) * 2018-07-03 2023-06-13 惠州学院 MEMS matrix microphone for measuring travel environmental noise with golden spiral structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB701962A (en) * 1947-12-26 1954-01-06 Zenith Radio Corp Improvements in piezo-electric transducers
FR2119482A5 (en) * 1970-12-21 1972-08-04 Ki
EP0174897A2 (en) * 1984-09-12 1986-03-19 NGK Spark Plug Co. Ltd. Underwater piezoelectric arrangement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3249770C2 (en) * 1982-11-05 1987-11-12 Martin Maelzer Device for testing electrical circuit boards
JPS60264200A (en) * 1984-06-13 1985-12-27 Shimada Phys & Chem Ind Co Ltd Ultrasonic wave vibrator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB701962A (en) * 1947-12-26 1954-01-06 Zenith Radio Corp Improvements in piezo-electric transducers
FR2119482A5 (en) * 1970-12-21 1972-08-04 Ki
EP0174897A2 (en) * 1984-09-12 1986-03-19 NGK Spark Plug Co. Ltd. Underwater piezoelectric arrangement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 10, no. 137 (E-405)[2194], 21st May 1986; & JP-A-60 264 200 (SHIMADA RIKA KOGYO K.K.) 27-12-1985 *

Also Published As

Publication number Publication date
EP0251599A2 (en) 1988-01-07
GB2191909B (en) 1989-12-20
GB2191909A (en) 1987-12-23
GB8614940D0 (en) 1986-10-29

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Owner name: GEC-MARCONI LIMITED

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Effective date: 19920422

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Inventor name: FLAVELL, DAVID GRAHAM