磁歪式振動発電を用いた歩行発電用デバイスの構造の検討

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2019/06/01

タイトル(英語): Research on Miniaturization of Walking Power Generation Device using Magnetostrictive Vibration Power Generator

著者名: 南谷　保（金沢大学理工研究域電子情報学系），上野　敏幸（金沢大学理工研究域電子情報学系）

著者名(英語): Tamotsu Minamitani (College of Science and Engineering, Kanazawa University), Toshiyuki Ueno (College of Science and Engineering, Kanazawa University)

キーワード: 磁歪式振動発電，鉄ガリウム合金，発電靴，アシスト効果，小型化　　vibrational generator，iron-gallium alloy，power generation shoes，assist effect，miniaturization

要約(英語): For safety of night walking, there are luminescent shoes flashing with walking motion. These power supplies are batteries, power generation by walking has attracted attention of reducing batteries, and power generation shoes are being developed. However, power generation shoes have yet to be practical realization. We considered using a magnetostrictive vibration generator developed in our laboratory as the power source for power generation shoes. This generator has advantages over conventional piezoelectric or movable magnet types in terms of high efficiency, high robustness and low electrical impedance. Although it was confirmed that the LED flashes by walking using the magnetostrictive vibration generator attached to the sole, there was a problem of miniaturization and high sensitivity. On the other hand, it was found that the fluctuation of the nonmagnetic gap due to the vibration is effective for increasing the sensitivity. In this report, we propose a design method of power generation device with consideration of assist effect. Next we tried and evaluated the thickness of the magnetostrictive element (Fe-Ga alloy) and frame (magnetic material) as parameters and verified the design method. From the results, we report the design guidelines for miniaturization and the small device confirmed luminescence by walking motion.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.139 No.6 （2019）

本誌掲載ページ: 285-290 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/ieejfms/139/6/139_285/_article/-char/ja/