WO1995007529A1 - Transducteur ultrasonore a adaptateur - Google Patents

Transducteur ultrasonore a adaptateur Download PDF

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Publication number
WO1995007529A1
WO1995007529A1 PCT/DE1994/001016 DE9401016W WO9507529A1 WO 1995007529 A1 WO1995007529 A1 WO 1995007529A1 DE 9401016 W DE9401016 W DE 9401016W WO 9507529 A1 WO9507529 A1 WO 9507529A1
Authority
WO
WIPO (PCT)
Prior art keywords
ultrasonic transducer
adapter body
annular groove
pot
transducer according
Prior art date
Application number
PCT/DE1994/001016
Other languages
German (de)
English (en)
Inventor
Valentin Magori
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1995007529A1 publication Critical patent/WO1995007529A1/fr

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
    • G10K9/12—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
    • 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
    • B06B1/067—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 which is used as, or combined with, an impedance matching layer
    • 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers

Definitions

  • the present invention relates to an ultrasonic transducer with an adapter body, for example in the form of a ⁇ / 4 adapter layer.
  • a matching layer is necessary to adapt piezoelectric ultrasonic transducers to media such as air.
  • one side of the piezoceramic transducer covered with electrodes is glued to a matching body. This creates the problem of contacting this electrode without significantly changing the adhesive joint, which affects the properties of the transducer.
  • the pot transducers have to make high demands on the processing of the bottom of the pot so that the piezoelectric vibrator lies flush on the bottom of the pot.
  • rejects can be made because the piezoceramic disk no longer lies exactly against the bottom of the pot.
  • the Adhesive layer inserted thin connecting wires that connect the electrode of the piezo element at the adhesive point with a metal ring. This metal ring in turn must be connected to the connecting wire, which experience has also shown to be problematic.
  • the present invention has for its object to provide an ultrasonic transducer in which the piezoceramic disk, when fully contacted, can be inserted into the adapter body in any insertion rotational position without the contacting point of the piezoceramic disk facing the adapter body ensuring that the piezoceramic disk sits flush on the transducer ⁇ pot bottom hampers.
  • the object is achieved by an ultrasonic transducer according to claim 1.
  • the recess consists of a concentric annular groove formed in the adapter body, which can accommodate the volume of the contact point in any rotational position of insertion of the piezoceramic disk.
  • FIGS. 1 a, b and c show schematically the cross section of an RU converter
  • an annular groove RN is introduced into the bottom of the cup-shaped adapter body T to remove the problems mentioned above, that of the solder joint KS, regardless of the rotational position between the piezoelectric Schwinger S and the adapter body T, the space required.
  • a rounding of the edge between the pot base and the pot wall no longer has a disruptive effect because the edge of the piezoelectric vibrator S no longer lies directly on the pot base.
  • the cup-shaped adapter body T is filled with a potting compound V in the exemplary embodiment shown. These should have sound absorbing properties. Materials such as Silicone rubber with lead oxide - or tungsten oxide - parts. In addition to silicone rubber, other materials that remain soft after being mixed with heavier particles can also be used.
  • a concentric annular groove RN is let into the adapter body T, which is designed here in the form of a disk, to achieve the object.
  • the annular groove is dimensioned such that the contacting point KS is accommodated independently of the rotational position of the piezoelectric vibrator S.
  • Behind the bead W there is a second ring groove RN2 the dimensions of which are dimensioned such that there is a burr which the metal ring M may have its lower inner edge has to come to rest.
  • the ring groove RN can be relatively narrow and flat in the case of thin connecting wires D arranged near the ring edge.
  • Contacting is not limited to soldering. Further contact options are welding, bonding, gluing with conductive silver, gluing and contacting with conductive silver lacquer. Also stoving silver or a sputter layer, which around the
  • the edge of the disc is pulled around can be used for contacting. Furthermore, thin wires inserted into the adhesive layer for contacting are possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

Un transducteur ultrasonore pourvu d'un adaptateur (T) comprend, du côté de l'adaptateur (T) tourné vers l'oscillateur piézo-électrique (S), une rainure annulaire concentrique (RN) de dimensions telles qu'elle peut recevoir le volume du point de contact (KS) entre le fil métallique de connexion (D) et l'oscillateur piézo-électrique (S).
PCT/DE1994/001016 1993-09-10 1994-09-05 Transducteur ultrasonore a adaptateur WO1995007529A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4330745.0 1993-09-10
DE19934330745 DE4330745C1 (de) 1993-09-10 1993-09-10 Ultraschallwandler mit Anpaßkörper

Publications (1)

Publication Number Publication Date
WO1995007529A1 true WO1995007529A1 (fr) 1995-03-16

Family

ID=6497392

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1994/001016 WO1995007529A1 (fr) 1993-09-10 1994-09-05 Transducteur ultrasonore a adaptateur

Country Status (2)

Country Link
DE (1) DE4330745C1 (fr)
WO (1) WO1995007529A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011085872A3 (fr) * 2010-01-18 2013-01-31 Robert Bosch Gmbh Transducteur ultrasonore destiné à être utilisé dans un milieu fluide
WO2016184952A1 (fr) * 2015-05-20 2016-11-24 Valeo Schalter Und Sensoren Gmbh Capteur à ultrasons pour un véhicule automobile, véhicule automobile ainsi que procédé de fabrication d'un capteur à ultrasons
CN111312203A (zh) * 2020-02-28 2020-06-19 清华大学 柔性声学超材料结构

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29611678U1 (de) * 1996-07-04 1997-08-07 Siemens AG, 80333 München Schallwandler, insbesondere Ultraschallwandler
DE19725717C2 (de) * 1997-06-18 2001-08-02 Hydrometer Gmbh Ultraschallwandler für Flüssigkeitsdurchflussmesser
DK172871B1 (da) * 1997-08-22 1999-08-23 Danfoss As Ultralydstransducer
DE19811982C5 (de) * 1998-03-19 2011-02-03 Microsonic Gesellschaft für Mikroelektronik und Ultraschalltechnik mbH Ultraschall-Luftfederanordnung
DE10216037A1 (de) 2002-04-11 2003-10-23 Endress & Hauser Gmbh & Co Kg Schall-oder Ultraschallsensor
DE10356114A1 (de) * 2003-11-27 2005-06-23 Endress + Hauser Flowtec Ag, Reinach Vorrichtung zur Bestimmung und/oder Überwachung des Volumen- und/oder Massendurchflusses eines Messmediums
CN103776497B (zh) * 2014-01-26 2017-09-01 哈尔滨工业大学（威海） 一种流量计用超声波传感器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2325266A1 (fr) * 1975-09-17 1977-04-15 Siemens Ag Transducteur a ultrason
EP0178346A1 (fr) * 1984-02-21 1986-04-23 NGK Spark Plug Co. Ltd. Transducteur à ultrasons
DE3823477A1 (de) * 1988-07-11 1990-01-18 Siemens Ag Verfahren zur fertigung von ultraschall-wandlern
DE3832947A1 (de) * 1988-09-28 1990-03-29 Siemens Ag Ultraschall-wandler, insbesondere fuer luftmengenmesser
DE3941933A1 (de) * 1989-12-19 1991-06-20 Siemens Ag Ultraschallwandler fuer luftstroemungsmessung insbesondere zur luftmengenmessung bei verbrennungsmotoren
EP0477575A1 (fr) * 1990-09-25 1992-04-01 Siemens Aktiengesellschaft Convertisseur ultrasonique, en particulier pour la mesure de flux d'air et de gaz, et son procédé de fabrication

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH054339Y2 (fr) * 1988-10-04 1993-02-03

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2325266A1 (fr) * 1975-09-17 1977-04-15 Siemens Ag Transducteur a ultrason
EP0178346A1 (fr) * 1984-02-21 1986-04-23 NGK Spark Plug Co. Ltd. Transducteur à ultrasons
DE3823477A1 (de) * 1988-07-11 1990-01-18 Siemens Ag Verfahren zur fertigung von ultraschall-wandlern
DE3832947A1 (de) * 1988-09-28 1990-03-29 Siemens Ag Ultraschall-wandler, insbesondere fuer luftmengenmesser
DE3941933A1 (de) * 1989-12-19 1991-06-20 Siemens Ag Ultraschallwandler fuer luftstroemungsmessung insbesondere zur luftmengenmessung bei verbrennungsmotoren
EP0477575A1 (fr) * 1990-09-25 1992-04-01 Siemens Aktiengesellschaft Convertisseur ultrasonique, en particulier pour la mesure de flux d'air et de gaz, et son procédé de fabrication

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011085872A3 (fr) * 2010-01-18 2013-01-31 Robert Bosch Gmbh Transducteur ultrasonore destiné à être utilisé dans un milieu fluide
US9097569B2 (en) 2010-01-18 2015-08-04 Robert Bosch Gmbh Ultrasonic transducer for use in a fluid medium
WO2016184952A1 (fr) * 2015-05-20 2016-11-24 Valeo Schalter Und Sensoren Gmbh Capteur à ultrasons pour un véhicule automobile, véhicule automobile ainsi que procédé de fabrication d'un capteur à ultrasons
CN111312203A (zh) * 2020-02-28 2020-06-19 清华大学 柔性声学超材料结构
CN111312203B (zh) * 2020-02-28 2021-03-12 清华大学 柔性声学超材料结构

Also Published As

Publication number Publication date
DE4330745C1 (de) 1995-04-27

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