高速道路法面地下水監視に向けた高感度小型水分量センサ計測回路の開発

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: 2019/09/01

タイトル(英語): Fabrication of a High-sensitive Small Signal Processing Circuit to Monitor Groundwater in Slope of Highway Road

著者名: 二川　雅登（静岡大学），小松　満（岡山大学），藤原　優（高速道路総合技術研究所）

著者名(英語): Masato Futagawa (Shizuoka University), Mitsuru Komatsu (Okayama University), Yu Fujiwara (NEXCO RI)

キーワード: 信号処理回路，センサチップ，地下水，低水分量，モデル土壌，高速道路　　signal processing circuit，sensor chip，groundwater，small water content，model soil，highway road

要約(英語): Groundwater monitoring in the area of the highway road near the mountain is important to prevent the road from collapsing. Our group has been studying to observe the groundwater using small water content sensor. To measure small water content, a high-sensitive small signal processing circuit using shielding type water content sensor chip was fabricated. Because the shielding electrode was needed to operate same voltage compared to current detecting electrode in the sensor chip, the constant voltage applying circuit was designed in the processing circuit. The proposed circuit connected the shielding type sensor chip was able to reduce the leakage current by 55% compared to previous circuit connected previous sensor chip. The measurements of model soils with volumetric water content in the range of 0.11% to 27.58% were performed. Proposed circuit with sensor chip was able to detect the water content volumes of all model soils. We succeeded in the fabrication of the signal operating circuit which achieved to measure small water content in the soil.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.139 No.9 （2019） 特集：水センシングに関わるセンサ・システム技術とその応用

本誌掲載ページ: 283-288 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/139/9/139_283/_article/-char/ja/