CA2185073A1 - Ultrasonic Transducer - Google Patents

Ultrasonic Transducer

Info

Publication number
CA2185073A1
CA2185073A1 CA2185073A CA2185073A CA2185073A1 CA 2185073 A1 CA2185073 A1 CA 2185073A1 CA 2185073 A CA2185073 A CA 2185073A CA 2185073 A CA2185073 A CA 2185073A CA 2185073 A1 CA2185073 A1 CA 2185073A1
Authority
CA
Canada
Prior art keywords
housing
layer
sensor element
matching layer
diaphragm
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
CA2185073A
Other languages
French (fr)
Other versions
CA2185073C (en
Inventor
Manfred Eckert
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.)
Endress and Hauser SE and Co KG
Original Assignee
Endress and Hauser SE and Co KG
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 Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Publication of CA2185073A1 publication Critical patent/CA2185073A1/en
Application granted granted Critical
Publication of CA2185073C publication Critical patent/CA2185073C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves
    • G01F23/2962—Measuring transit time of reflected waves
    • 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
    • B06B1/0681—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 and a damping structure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves
    • G01F23/2968—Transducers specially adapted for acoustic level indicators

Abstract

This ultrasonic transducer has a high chemical resistance and a small diameter and can be used over a very wide temperature range. It has a single-piece, can-shaped housing (1) sealed off by a diaphragm (12), a sensor element (2), arranged in the housing (1), for transmitting and receiving ultrasound, a matching layer (3) arranged between the diaphragm (12) and the sensor element (2), a stress equalizing layer (5) which com-pletely encloses the sensor element (2) apart from a front area adjoining the matching layer (3) and is made of a thermosetting plastic, especially of an epoxy resin, a clamping ring (4) coaxially enclosing the matching layer (3), and a damping layer (6) that fills a cavity that remains in the housing (1) and is bounded by the clamping ring (4), the stress equalizing layer (5) and the housing (1).
CA002185073A 1995-09-28 1996-09-09 Ultrasonic transducer Expired - Fee Related CA2185073C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP95115281.8 1995-09-28
EP95115281A EP0766071B1 (en) 1995-09-28 1995-09-28 Ultrasonic transducer

Publications (2)

Publication Number Publication Date
CA2185073A1 true CA2185073A1 (en) 1997-03-29
CA2185073C CA2185073C (en) 1999-09-07

Family

ID=8219662

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002185073A Expired - Fee Related CA2185073C (en) 1995-09-28 1996-09-09 Ultrasonic transducer

Country Status (5)

Country Link
US (1) US5664456A (en)
EP (1) EP0766071B1 (en)
JP (1) JP2918102B2 (en)
CA (1) CA2185073C (en)
DE (1) DE59510158D1 (en)

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FR2800229B1 (en) * 1999-10-22 2002-04-05 Thomson Marconi Sonar Sas BROADBAND SUBMARINE ACOUSTIC TRANSDUCER
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US6412344B1 (en) * 1999-11-15 2002-07-02 Rosemount Aerospace Inc. Fluid level sensor with dry couplant
US7166098B1 (en) * 1999-12-30 2007-01-23 Advanced Cardiovascular Systems, Inc. Medical assembly with transducer for local delivery of a therapeutic substance and method of using same
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JP3538708B2 (en) * 2000-06-12 2004-06-14 株式会社村田製作所 Piezoelectric resonator and piezoelectric components
DE10055893C5 (en) * 2000-11-10 2010-04-01 Hydrometer Gmbh Ultrasonic transducer assembly for use in a flowmeter for a gaseous or liquid medium
DE10133395A1 (en) * 2001-07-13 2003-01-23 Flowtec Ag Ultrasonic flow meter sensor has heat conducting moulded mount
DE10216037A1 (en) * 2002-04-11 2003-10-23 Endress & Hauser Gmbh & Co Kg Sound or ultrasonic sensor
US6993967B2 (en) * 2002-07-12 2006-02-07 Ti Group Automotive Systems, L.L.C. Fluid level sensor
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DE10305003A1 (en) * 2003-02-07 2004-08-19 Jäger, Frank-Michael Liquid detection unit, comprises an ultrasound transducer located on a container wall, with a piezo electric element that produces an ultrasound impulse
US8354773B2 (en) * 2003-08-22 2013-01-15 Siemens Medical Solutions Usa, Inc. Composite acoustic absorber for ultrasound transducer backing material
DE10344741A1 (en) * 2003-09-25 2005-04-14 Endress + Hauser Gmbh + Co. Kg Sound or ultrasonic transducer
US20050201205A1 (en) * 2004-03-10 2005-09-15 Chavez Alfred M. Acoustic transducer assembly for aluminum hulled vessels
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DE102005017008A1 (en) * 2005-04-07 2006-10-12 Valeo Schalter Und Sensoren Gmbh Device comprising a transmitter, a receiver and a housing accommodating the transmitter and the receiver
JP2007005632A (en) * 2005-06-24 2007-01-11 Fujifilm Holdings Corp Piezoelectric actuator, its manufacturing method, and liquid discharge head
WO2007029357A1 (en) * 2005-09-05 2007-03-15 Hitachi Medical Corporation Ultrasonographic device
US7775110B2 (en) * 2006-09-22 2010-08-17 Denso Corporation Ultrasonic sensor
JP4635996B2 (en) * 2006-09-26 2011-02-23 株式会社デンソー Ultrasonic sensor
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US8102734B2 (en) * 2007-02-08 2012-01-24 St. Jude Medical, Atrial Fibrillation Division, Inc. High intensity focused ultrasound transducer with acoustic lens
US8382689B2 (en) * 2007-02-08 2013-02-26 St. Jude Medical, Atrial Fibrillation Division, Inc. Device and method for high intensity focused ultrasound ablation with acoustic lens
US7877854B2 (en) 2007-02-08 2011-02-01 St. Jude Medical, Atrial Fibrillation Division, Inc. Method of manufacturing an ultrasound transducer
DE102007010500A1 (en) * 2007-03-05 2008-09-11 Robert Bosch Gmbh Ultrasonic transducer with directly embedded piezo
US7557490B2 (en) * 2007-05-10 2009-07-07 Daniel Measurement & Control, Inc. Systems and methods of a transducer having a plastic matching layer
DE102008055116A1 (en) 2008-12-23 2010-07-01 Robert Bosch Gmbh Method for producing an ultrasonic transducer
DE102008055126A1 (en) 2008-12-23 2010-07-01 Robert Bosch Gmbh Ultrasonic transducer for use in a fluid medium
US7703337B1 (en) * 2009-02-27 2010-04-27 Murray F Feller Clamping arrangements for a transducer assembly having a piezoelectric element within a foam body
DE102009045811A1 (en) * 2009-10-19 2011-04-21 Endress + Hauser Flowtec Ag Sensor for thermal flow rate measuring device, has cable electrically contacting resistance thermometer and passed through opened end of case, where case is partially filled with composite material that is utilized as filling material
DE102009046144A1 (en) 2009-10-29 2011-05-19 Robert Bosch Gmbh Ultrasonic transducer for use in a fluid medium
DE102009046143A1 (en) 2009-10-29 2011-05-12 Robert Bosch Gmbh Method for manufacturing ultrasonic converter utilized in e.g. ultrasonic flow meter in exhaust gas system of internal combustion engine of commercial vehicle, involves connecting housing part with sealing element during molding process
DE102009046145A1 (en) 2009-10-29 2011-05-12 Robert Bosch Gmbh Ultrasonic transducer for use in a fluid medium
DE102009046149A1 (en) 2009-10-29 2011-05-12 Robert Bosch Gmbh Method for manufacturing ultrasonic flowmeter utilized for e.g. volume flow measurement of air in intake system of internal combustion engine of motor vehicle, involves utilizing adjusting body with porous body of polymer
DE102010000967A1 (en) 2010-01-18 2011-07-21 Robert Bosch GmbH, 70469 Ultrasonic transducer for use in a fluid medium
WO2011090484A1 (en) * 2010-01-22 2011-07-28 Massa Products Corporation Hidden ultrasonic transducer
DE102010029283A1 (en) * 2010-05-25 2011-12-01 Robert Bosch Gmbh Ultrasonic transducer for use in a fluid medium
DE102010030189A1 (en) 2010-06-16 2011-12-22 Robert Bosch Gmbh Method for producing an ultrasonic transducer for use in a fluid medium
WO2013008470A1 (en) * 2011-07-13 2013-01-17 パナソニック株式会社 Method for manufacturing acoustic matching body, acoustic matching body, ultrasonic transducer using acoustic matching body, and ultrasonic flowmeter
DE102011090082A1 (en) * 2011-12-29 2013-07-04 Endress + Hauser Flowtec Ag Ultrasonic transducer for a flowmeter
DE102011090079A1 (en) 2011-12-29 2013-07-04 Endress + Hauser Flowtec Ag Ultrasonic transducer for an ultrasonic flowmeter
DE102012104227A1 (en) 2012-05-15 2013-11-21 Endress + Hauser Gmbh + Co. Kg Ultrasonic transducer has attenuation capping portion that is interlaced with metal or metal oxide particles at room temperature, such that cross-linking encapsulation is conditioned with micro hollow spheres
DE102012208292A1 (en) * 2012-05-16 2013-11-21 Robert Bosch Gmbh A method of making an ultrasonic transducer core with an embedded piezoelectric transducer element
US9142751B2 (en) * 2012-10-10 2015-09-22 Industrial Sonomechanics, Llc Efficient cooling of piezoelectric transducers
WO2014136221A1 (en) * 2013-03-06 2014-09-12 三菱電機株式会社 Obstruction detection device
US10072963B1 (en) * 2014-07-11 2018-09-11 Nick V. Solokhin Ultrasonic volume-sensing transducer instrument with concave transceiver element
WO2016190993A1 (en) 2015-05-22 2016-12-01 Halliburton Energy Services, Inc. Ultrasonic transducers with piezoelectric material embedded in backing
CN105268619B (en) * 2015-11-19 2017-07-14 浙江大学 Gas ultrasound wave transducer of the matching layer front end with metal coating membrane structure
KR101963732B1 (en) * 2016-03-17 2019-03-29 (주)동일기연 Fluid Level Measuring Ultrasonic Transducer
DE102017107331A1 (en) 2017-04-05 2018-10-11 Turck Holding Gmbh ultrasonic sensor
EP3384849B1 (en) * 2017-04-07 2022-06-08 Esaote S.p.A. Ultrasound probe with acoustic amplifier
DE102017111624A1 (en) * 2017-05-29 2018-11-29 Endress + Hauser Flowtec Ag ultrasound transducer
TWI772167B (en) * 2021-09-01 2022-07-21 詠業科技股份有限公司 Ultrasonic transducer

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Also Published As

Publication number Publication date
US5664456A (en) 1997-09-09
EP0766071B1 (en) 2002-04-10
JPH09126861A (en) 1997-05-16
JP2918102B2 (en) 1999-07-12
DE59510158D1 (en) 2002-05-16
CA2185073C (en) 1999-09-07
EP0766071A1 (en) 1997-04-02

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