An Ultrasonic Displacement Measurement Method Using a Piezoelectric Device
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概要
- 論文の詳細を見る
A novel measurement method of displacement using ultrasonic waves having a pair of frequencies(ƒ_0andƒ_1) generated by a piezoelectric device is described. The displacement is estimated from the detected phases of ultrasonic received signals and the detectable displacement range is extended by neighboring the frequency interval(ƒ_0-ƒ_1). The displacement measurements based on our method were carried out using ultrasonic waves of 5 MHz in water. Although a measurement range using the single frequency measurements is limited to a half of wavelength or less, the extension of the measurement range by 500 times of wavelength is accomplished by our method.
- 社団法人電子情報通信学会の論文
- 2001-09-21
著者
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Imano Kazuhiko
Department Of Electrical And Electronic Engineering Faculty Of Engineering And Resource Science Akit
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Imano Kazuhiko
Department Of Electrical & Electronic Engineering Mining College Akita University
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NISHIHIRA Morimasa
Department of Electrical and Electronic Engineering, Faculty of Engineering and Resource Science, Ak
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YUZE Kazuki
Department of Electrical and Electronic Engineering, Faculty of Engineering and Resource Science, Ak
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Nishihira Morimasa
Department Of Electrical And Electronic Engineering Faculty Of Engineering And Resource Science Akit
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Yuze Kazuki
Department Of Electrical And Electronic Engineering Faculty Of Engineering And Resource Science Akit
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Nishihira Morimasa
Department Of Electrical And Electronic Engineering Faculty Of Engineering And Resource Science Akit
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Imano Kazuhiko
Department Of Electrical And Electronic Engineering Faculty Of Engineering And Resource Science Akit
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