WLANセンシングによるプロペラの回転速度測定

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2022/12/01

タイトル(英語): Propeller's Rotational Speed Measurement by WLAN Sensing

著者名: 小川　将克（上智大学 理工学部 情報理工学科），高橋　卓也（上智大学 理工学部 情報理工学科）

著者名(英語): Masakatsu Ogawa (Faculty of Science and Technology, Sophia University), Takuya Takahashi (Faculty of Science and Technology, Sophia University)

キーワード: 無線LAN，センシング，チャネル状態情報，回転速度測定_x000D_　　WLAN，sensing，channel state information，rotational speed measurement

要約(英語): This paper focuses on the propeller's rotational speed measurement by WLAN sensing using the channel state information (CSI) that indicates the multipath propagation characteristic between transmitting and receiving antennas. To measure the rotation speed by the measurement device via light and reflecting label with contactless, the distance from the target object has to be short, and such devices are not ideal for long-distance measurements from the target object. We propose a rotational speed estimation algorithm using CSI comprising time, frequency, and space domain information in MIMO-OFDM transmission to overcome this problem. The proposed algorithm transforms the time series data for each subcarrier into the normalized amplitude spectrum. After that, the rotational speed is estimated using the sum of the normalized amplitude spectrum in all subcarriers. The experimental results reveal that the proposed algorithm achieves high accuracy at a distance of 5 m from the propeller fabricated with an acrylic material and a blade length of 15cm. Moreover, if the propeller is fabricated with an aluminum, the proposed algorithm achieves high accuracy at a distance of 5 m even if the blade length is short, 5cm.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.142 No.12 （2022） 特集：レジリエントな社会を実現するスマートファシリティ関連技術

本誌掲載ページ: 941-947 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/ieejias/142/12/142_941/_article/-char/ja/