Wireless Self-powered Sensor System with Sap-activated Battery for Plant Health Monitoring

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: 2014/03/01

タイトル(英語): Wireless Self-powered Sensor System with Sap-activated Battery for Plant Health Monitoring

著者名: Ami Tanaka (Department of Electronic and Computer Engineering, Ritsumeikan University), Fumiyasu Utsunomiya (Department of Electronic and Computer Engineering, Ritsumeikan University), Takakuni Douseki (Department of Electronic and Computer Engineering, R

著者名(英語): Ami Tanaka (Department of Electronic and Computer Engineering, Ritsumeikan University), Fumiyasu Utsunomiya (Department of Electronic and Computer Engineering, Ritsumeikan University), Takakuni Douseki (Department of Electronic and Computer Engineering, Ritsumeikan University)

キーワード: Wireless sensor network，Self-powered system，Sap-activated battery，Intermittent operation，Divided-power-line structure

要約(英語): A self-powered plant-health-monitoring sensor powered by a sap-activated battery that consists of two different types of metal electrodes and is activated by the sap of a vascular plant has been developed as an application for wireless biosensor networks. The battery consists of a galvanized iron nail inserted into a tree trunk and a stainless steel electrode planted in the soil nearby. Its output power is on the order of 1 µW. An intermittent-power-supply circuit with a divided-power-line structure, which separates the power line of a storage capacitor while it is discharging, makes it possible to charge the capacitor with an input power of around 1 µW and to supply power to a wireless transmitter with a power dissipation of a few milliwatts. To verify the effectiveness of the circuit scheme, a prototype sensor was fabricated and tested on a potted pachira tree. The sensor was able to transmit a signal about every 40 min over a distance of 5 m. We verified that the variation in the interval between transmitted signals depended on the water content of the soil around the tree.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.134 No.3 （2014） 特集：センサ・マイクロマシン英文特集号

本誌掲載ページ: 52-57 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/134/3/134_52/_article/-char/ja/