Journal
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
Volume 106, Issue -, Pages 303-318Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ymssp.2018.01.006
Keywords
Energy harvesting; Piezoelectric; Random vibration; Wearable; Cantilever; Body motion; PZNN-PLZT
Categories
Funding
- project ''Novel material architectures for SMART piezoceramic electromechanical converters'' under Czech Science Foundation [GACR 17-08153S]
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The capability of using a linear kinetic energy harvester - A cantilever structured piezoelectric energy harvester - to harvest human motions in the real-life activities is investigated. The whole loop of the design, simulation, fabrication and test of the energy harvester is presented. With the smart wristband/watch sized energy harvester, a root mean square of the output power of 50 mu W is obtained from the real-life hand-arm motion in human's daily life. Such a power is enough to make some low power consumption sensors to be self powered. This paper provides a good and reliable comparison to those with nonlinear structures. It also helps the designers to consider whether to choose a nonlinear structure or not in a particular energy harvester based on different application scenarios. (C) 2018 Elsevier Ltd. All rights reserved.
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