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Piezoelectric Vibration Energy Harvester Using Indirect Impact of Springless Proof Mass
- Title
- Piezoelectric Vibration Energy Harvester Using Indirect Impact of Springless Proof Mass
- Authors
- Ju S.; Ji C.-H.
- Ewha Authors
- 지창현
- SCOPUS Author ID
- 지창현
- Issue Date
- 2015
- Journal Title
- Journal of Physics: Conference Series
- ISSN
- 1742-6588
- Citation
- Journal of Physics: Conference Series vol. 660, no. 1
- Publisher
- Institute of Physics Publishing
- Indexed
- SCOPUS
- Document Type
- Conference Paper
- Abstract
- This paper presents an impact-based piezoelectric vibration energy harvester using freely movable spherical proof mass and MFC (Macro Fiber Composite) beams as piezoelectric cantilevers. When external vibration is applied, a metal sphere moves freely along the channel and collides with both ends of the cavity, which induces the vibration of parallel- connected MFCs and generates electric power. A proof-of-concept device having the form- factor of a wristwatch has been designed and tested. Moreover, spherical proof mass made of different materials has been tested to analyze the relationship between output power, long-term reliability, and audible noise level during operation. Maximum peak-to-peak open circuit voltage of 41.2V and average power of 908.7 μW have been obtained in response to a 3g vibration at 17Hz for device with parallel-connected MFC beams. © Published under licence by IOP Publishing Ltd.
- DOI
- 10.1088/1742-6596/660/1/012122
- Appears in Collections:
- 공과대학 > 전자전기공학전공 > Journal papers
- Files in This Item:
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Piezoelectric Vibration Energy Harvester Using Indirect Impact of Springless Proof Mass.pdf(1.28 MB)
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