水晶発振回路を用いた非接触型液体濃度センサ

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2015/06/01

タイトル(英語): Non-contact Sensor for Measurement of Liquid Concentration based on Quartz Oscillator

著者名: 須佐　翼(新潟大学大学院 自然科学研究科),渡部　尊(新潟大学大学院 自然科学研究科),寒川　雅之(新潟大学大学院 自然科学研究科),安部　隆(新潟大学大学院 自然科学研究科)

著者名(英語): Tsubasa Susa (Graduate School of Science and Technology, Niigata University), Takeru Watanabe (Graduate School of Science and Technology, Niigata University), Masayuki Sohgawa (Graduate School of Science and Technology, Niigata University), Takashi Abe (Graduate School of Science and Technology, Niigata University)

キーワード: 水晶振動子,非接触測定,液体濃度センサ,水晶発振回路　　quartz-crystal resonator,non-contact measurement,liquid concentration sensor,quartz oscillator

要約(英語): In this paper, we report the non-contact sensor for measurement of liquid concentration based on quartz oscillator. The non-contact sensing can be realized by using a leaked electric field of a planer sensing capacitor for sensing liquid on a spacer. This sensor measures capacitance changes of the sensing capacitor (SC) as frequency changes of the quartz oscillator. Since the capacitance is dependent on relative permittivity or conductivity of liquid on the spacer, it is possible to measure the concentration of them. The response is very stable because this sensor is incorporated the SC into the quartz oscillator. Because the SC is in contact with the sensing liquid instead of the quartz crystal resonator, the proposed sensor has a high quality factor (about 30,000). Moreover, this sensor can be used with general IC and electronic component, which takes low cost. The proposed sensor is expected to use for non-contact measurements of liquid concentration.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.135 No.6 （2015） 特集：第31回「センサ・マイクロマシンと応用システム」シンポジウム受賞論文特集

本誌掲載ページ: 210-213 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/135/6/135_210/_article/-char/ja/