IN2014DN07854A - - Google Patents

Info

Publication number
IN2014DN07854A
IN2014DN07854A IN7854DEN2014A IN2014DN07854A IN 2014DN07854 A IN2014DN07854 A IN 2014DN07854A IN 7854DEN2014 A IN7854DEN2014 A IN 7854DEN2014A IN 2014DN07854 A IN2014DN07854 A IN 2014DN07854A
Authority
IN
India
Prior art keywords
axis
crystal
retarder
piezoelectric vibrator
output
Prior art date
Application number
Inventor
Ki Han Nam
Hyeon Kyu Joo
Minehiro Tonosaki
Fumiyasu Ikarashi
Hideo Kawaguchi
Noriaki Saito
Original Assignee
Woojin Inc
Sonic Corp
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 Woojin Inc, Sonic Corp filed Critical Woojin Inc
Priority claimed from PCT/KR2014/002488 external-priority patent/WO2014157907A1/en
Publication of IN2014DN07854A publication Critical patent/IN2014DN07854A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • 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

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measuring Volume Flow (AREA)

Abstract

Provided is an ultrasonic sensor which includes a piezoelectric vibrator made of a lithium niobate (LN) single crystal and may be used in a high temperature region by generating a high ultrasonic wave output, and prevents cracks from being generated in the crystal. A piezoelectric vibrator 1 of the present invention has a surface (Y-axis 36° cut surface) obtained by rotating a surface orthogonal to a Y-axis of the LN crystal about an X-axis by 36° ± 2° as an output surface. The ultrasonic sensor further includes a retarder 3 made of titanium and a bonding layer 2 for bonding one surface of the retarder 3 to the output surface. The bonding layer 2 is made of silver and frit glass, and the frit glass has a coefficient of linear expansion ranging from 5 × 10-6 K-1 to 15 × 10-6 K-1.
IN7854DEN2014 2013-03-15 2014-03-25 IN2014DN07854A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2013052874A JP5524378B1 (en) 2013-03-15 2013-03-15 Ultrasonic sensor for high temperature
KR1020130031672A KR101287060B1 (en) 2013-03-15 2013-03-25 Ultrasonic transducer for high temperature
PCT/KR2014/002488 WO2014157907A1 (en) 2013-03-25 2014-03-25 High temperature ultrasonic sensor and manufacturing method therefor

Publications (1)

Publication Number Publication Date
IN2014DN07854A true IN2014DN07854A (en) 2015-04-24

Family

ID=48997559

Family Applications (1)

Application Number Title Priority Date Filing Date
IN7854DEN2014 IN2014DN07854A (en) 2013-03-15 2014-03-25

Country Status (3)

Country Link
JP (1) JP5524378B1 (en)
KR (1) KR101287060B1 (en)
IN (1) IN2014DN07854A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102304458B1 (en) 2019-09-02 2021-09-24 한국파나메트릭스 주식회사 Ultrasonic sensor and manufacturing method thereof using piezo-electric single crystal element
JP2023072292A (en) * 2021-11-12 2023-05-24 日清紡ホールディングス株式会社 Waveform shaping device and gas concentration measuring device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1154531A (en) * 1997-07-31 1999-02-26 Nec Kansai Ltd Ceramic package type piezoelectric element and its manufacture
JP2005201838A (en) * 2004-01-19 2005-07-28 Kaijo Corp High-temperature fluid measuring ultrasonic sensor
US7808156B2 (en) 2006-03-02 2010-10-05 Visualsonics Inc. Ultrasonic matching layer and transducer
JP4806431B2 (en) * 2008-08-04 2011-11-02 パナソニック株式会社 Ultrasonic transducer
JP2010249788A (en) * 2009-04-13 2010-11-04 Kazumasa Onishi Ultrasonic flowmeter for gas
KR20110079096A (en) 2009-12-31 2011-07-07 삼성전기주식회사 Ultrasonic transducer

Also Published As

Publication number Publication date
KR101287060B1 (en) 2013-07-17
JP5524378B1 (en) 2014-06-18
JP2014178231A (en) 2014-09-25

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