エレクトレットセンサを用いた屋外環境での植物のAE測定と活動モニタリングの検討

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: 2022/11/01

タイトル(英語): Study on the AE Measurement and Activity Monitoring of Living Plants in Outdoor Environment using Electret Sensors

著者名: 蔭山　健介（埼玉大学）

著者名(英語): Kensuke Kageyama (Saitama University)

キーワード: アコースティック・エミッション，AEセンサ，エレクトレット，植物のキャビテーション，スマート農業　　acoustic emission，AE sensor，electret，cavitation in plants，smart agriculture

要約(英語): Transpiration of living plants causes the cavitation in the xylem and the acoustic emissions (AE) emitted during transpiration can be measured to monitor the activity of the plants. In this study, electret sensors (ECS) and IoT devices were prepared at low cost and the long-term plant AE measurements in outdoor environments of strawberry greenhouses and tea plantation were carried out. In greenhouse-grown strawberries, AE determination was performed considering as noise if AEs were detected more than once per second. Most AEs occurred during the daytime, and AEs caused by transpiration-induced cavitation could be measured. Furthermore, the correlation between the center of gravity (WH) of the AE occurrence hour of day and fruit quality was examined, and it was found that the later the WH, the higher the sugar content of the fruit. On the other hand, a large number of AE were detected due to rainfall when the AE determination was conducted on tea trees in the open field. Such an AE occurrence due to rainfall was eliminated by neglecting AE occurrence when soil moisture increased. Then, the 7-day moving average of the daily AE generation showed a strong correlation with soil temperature. These results indicate the possibility to monitor AE in outdoor environments such as greenhouse cultivation and open field cultivation using ECS and IoT devices.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.142 No.11 （2022） 特集：環境・生体情報の可視化・リアルタイムモニタリング

本誌掲載ページ: 300-307 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/142/11/142_300/_article/-char/ja/