CN104602827B - 具有改进阻抗匹配的换能器 - Google Patents

具有改进阻抗匹配的换能器 Download PDF

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Publication number
CN104602827B
CN104602827B CN201380032985.XA CN201380032985A CN104602827B CN 104602827 B CN104602827 B CN 104602827B CN 201380032985 A CN201380032985 A CN 201380032985A CN 104602827 B CN104602827 B CN 104602827B
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CN
China
Prior art keywords
transducer
load
piezoelectric
impedance
layer
Prior art date
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Active
Application number
CN201380032985.XA
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English (en)
Chinese (zh)
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CN104602827A (zh
Inventor
J.伊斯特
N.J.哈里斯
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Google LLC
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Armour Home Electronics Ltd
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Publication of CN104602827A publication Critical patent/CN104602827A/zh
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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/88—Mounts; Supports; Enclosures; 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
    • B06B1/0603—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 piezoelectric bender, e.g. bimorph
    • 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
    • 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
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • H10N30/2041—Beam type
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • H10N30/2041—Beam type
    • H10N30/2042—Cantilevers, i.e. having one fixed end

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Transducers For Ultrasonic Waves (AREA)
CN201380032985.XA 2012-04-23 2013-04-23 具有改进阻抗匹配的换能器 Active CN104602827B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB1207045.4A GB201207045D0 (en) 2012-04-23 2012-04-23 Transducers with improved impedance matching
GB1207045.4 2012-04-23
PCT/GB2013/051028 WO2013160669A1 (en) 2012-04-23 2013-04-23 Transducers with improved impedance matching

Publications (2)

Publication Number Publication Date
CN104602827A CN104602827A (zh) 2015-05-06
CN104602827B true CN104602827B (zh) 2017-10-03

Family

ID=46261683

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201380032985.XA Active CN104602827B (zh) 2012-04-23 2013-04-23 具有改进阻抗匹配的换能器

Country Status (7)

Country Link
US (3) US20150243874A1 (https=)
EP (1) EP2841213B1 (https=)
JP (1) JP6293733B2 (https=)
KR (1) KR102068270B1 (https=)
CN (1) CN104602827B (https=)
GB (1) GB201207045D0 (https=)
WO (1) WO2013160669A1 (https=)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201207045D0 (en) * 2012-04-23 2012-06-06 Hiwave Technologies Uk Ltd Transducers with improved impedance matching
JP6524467B2 (ja) * 2015-11-06 2019-06-05 日本特殊陶業株式会社 圧電アクチュエータおよびその製造方法
US10356523B2 (en) 2017-12-13 2019-07-16 Nvf Tech Ltd Distributed mode loudspeaker actuator including patterned electrodes
US10476461B2 (en) 2017-12-20 2019-11-12 Nvf Tech Ltd Active distributed mode actuator
US10477321B2 (en) 2018-03-05 2019-11-12 Google Llc Driving distributed mode loudspeaker actuator that includes patterned electrodes
US10648852B2 (en) * 2018-04-11 2020-05-12 Exo Imaging Inc. Imaging devices having piezoelectric transceivers
US10631072B2 (en) 2018-06-25 2020-04-21 Google Llc Actuator for distributed mode loudspeaker with extended damper and systems including the same
US10848875B2 (en) * 2018-11-30 2020-11-24 Google Llc Reinforced actuators for distributed mode loudspeakers
US10462574B1 (en) 2018-11-30 2019-10-29 Google Llc Reinforced actuators for distributed mode loudspeakers
CN113808560B (zh) * 2020-06-12 2024-08-02 香港科技大学 基于阻抗匹配的复合超材料的超薄宽频水下吸声器
DE102020121337A1 (de) * 2020-08-13 2022-02-17 Tdk Electronics Ag Piezoelektrischer Wandler und Verfahren zur Einstellung der elektromechanischen Eigenschaften eines piezoelektrischen Wandlers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020027400A1 (en) * 1999-07-23 2002-03-07 Minoru Toda Ultrasonic transducer having impedance matching layer
CN1666568A (zh) * 2001-01-05 2005-09-07 比约恩·A·J·安杰尔森 宽带换能器
CN1849842A (zh) * 2003-09-10 2006-10-18 新型转换器有限公司 音响装置
JP2010528547A (ja) * 2007-05-31 2010-08-19 ニュー トランスデューサーズ リミテッド オーディオ装置
EP2373057A1 (en) * 2008-12-26 2011-10-05 Panasonic Electric Works Co., Ltd. Piezoelectric speaker, piezoelectric audio device employing piezoelectric speaker, and sensor with alert device attached

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Publication number Priority date Publication date Assignee Title
US2326923A (en) * 1941-09-30 1943-08-17 Rca Corp Art of mounting piezoelectric crystals
US4736129A (en) * 1985-05-30 1988-04-05 Marcon Electronics Co., Ltd. Ultrasonic motor
US4642511A (en) * 1986-03-31 1987-02-10 Motorola, Inc. Edge-mounting configuration for at-strip resonators
JPH11164396A (ja) * 1997-09-25 1999-06-18 Matsushita Electric Ind Co Ltd 圧電スピーカおよびその製造方法
US6262517B1 (en) * 2000-02-11 2001-07-17 Materials Systems, Inc. Pressure resistant piezoelectric acoustic sensor
JP2006352464A (ja) * 2005-06-15 2006-12-28 Nec Tokin Corp 音響振動発生素子
JP2008061081A (ja) * 2006-09-01 2008-03-13 Kenwood Corp 圧電スピーカ
JP2010027500A (ja) * 2008-07-23 2010-02-04 Tdk Corp 有機ｅｌ表示装置及びその製造方法
US8006917B2 (en) * 2008-08-26 2011-08-30 General Electric Company Method and apparatus for reducing acoustic noise in a synthetic jet
JP5604096B2 (ja) * 2009-12-25 2014-10-08 東京計器株式会社 液圧システムの圧力保持機構
GB201207045D0 (en) * 2012-04-23 2012-06-06 Hiwave Technologies Uk Ltd Transducers with improved impedance matching
KR102125405B1 (ko) * 2018-08-29 2020-06-22 한국과학기술연구원 넓은 동작 주파수 범위를 갖는 자가 공진 조절 압전 에너지 하베스터
US11482659B2 (en) * 2018-09-26 2022-10-25 Apple Inc. Composite piezoelectric actuator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020027400A1 (en) * 1999-07-23 2002-03-07 Minoru Toda Ultrasonic transducer having impedance matching layer
CN1666568A (zh) * 2001-01-05 2005-09-07 比约恩·A·J·安杰尔森 宽带换能器
CN1849842A (zh) * 2003-09-10 2006-10-18 新型转换器有限公司 音响装置
JP2010528547A (ja) * 2007-05-31 2010-08-19 ニュー トランスデューサーズ リミテッド オーディオ装置
EP2373057A1 (en) * 2008-12-26 2011-10-05 Panasonic Electric Works Co., Ltd. Piezoelectric speaker, piezoelectric audio device employing piezoelectric speaker, and sensor with alert device attached

Also Published As

Publication number Publication date
CN104602827A (zh) 2015-05-06
JP6293733B2 (ja) 2018-03-14
US20180102471A1 (en) 2018-04-12
US11730061B2 (en) 2023-08-15
KR20150048666A (ko) 2015-05-07
EP2841213B1 (en) 2017-02-01
US20200321511A1 (en) 2020-10-08
US10714673B2 (en) 2020-07-14
KR102068270B1 (ko) 2020-01-20
EP2841213A1 (en) 2015-03-04
WO2013160669A1 (en) 2013-10-31
US20150243874A1 (en) 2015-08-27
GB201207045D0 (en) 2012-06-06
JP2015520963A (ja) 2015-07-23

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