Compact, digital and self-powered piezoelectric vibration energy harvester with generation control using voltage measurement circuit

Yushin Hara, Kensuke Saito, Kanjuro Makihara

研究成果: Article査読

10 被引用数 (Scopus)

抄録

As piezoelectric vibration energy harvesting (PVEH) extracts electrical energy from vibration, it is a promising portable power device. Although harvesting efficiency can be increased by using switch controls based on vibration displacement, such controls require external controllers and sensors, which consume energy and occupy space in a device. To separate external energy sources and sensors from a switch controller, we propose a measurement circuit and a digital controller for PVEH to increase autonomy, flexibility, and compactness. In the present study, switch controls are realized on a self-powered digital controller using piezoelectric voltage as an observation value, where achieves a switch-controlled PVEH independent from additional external sensors. We discuss the characteristics of the proposed circuit and evaluate the harvesting performance. The experimental results demonstrated that the proposed sensor-less harvester has a harvesting performance comparable to that of a conventional sensor-equipped harvester.

本文言語English
論文番号111609
ジャーナルSensors and Actuators, A: Physical
299
DOI
出版ステータスPublished - 2019 11月 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 器械工学
  • 凝縮系物理学
  • 表面、皮膜および薄膜
  • 金属および合金
  • 電子工学および電気工学

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