ACOUSTIC WAVE SENSOR

PROBLEM TO BE SOLVED: To provide an acoustic wave sensor capable of calculating a propagation time of an ultrasonic wave with higher accuracy.SOLUTION: A correction value operation section 36 operates an error t of a propagation time of an ultrasonic wave propagating between a transmission element 1...

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Bibliographic Details
Main Authors KAWAMOTO YUKI, KAMAKURA NOBUHITO, BANDO YUSUKE, SHINTANI TOMONORI, KINJO TETSUYA
Format Patent
LanguageEnglish
Published 30.09.2013
Subjects
MEASURING
MEASURING QUANTITY OF HEAT
MEASURING TEMPERATURE
PHYSICS
TESTING
THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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Summary:PROBLEM TO BE SOLVED: To provide an acoustic wave sensor capable of calculating a propagation time of an ultrasonic wave with higher accuracy.SOLUTION: A correction value operation section 36 operates an error t of a propagation time of an ultrasonic wave propagating between a transmission element 1 and a reception element 2 on the basis of a distance between them. A cross-correlation section 33 operates a propagation time t of an acoustic wave propagated from the transmission element 1 to the reception element 2 by correlating the transmission element with the reception element. A correction section 37 corrects the propagation time t. Therefore, the propagation time of the acoustic wave is calculated with higher accuracy.
Bibliography:Application Number: JP20120059975