University of Oulu

Yang Bai, Pavel Tofel, Zdenek Hadas, Jan Smilek, Petr Losak, Pavel Skarvada, Robert Macku, Investigation of a cantilever structured piezoelectric energy harvester used for wearable devices with random vibration input, Mechanical Systems and Signal Processing, Volume 106, June 2018, Pages 303-318, ISSN 0888-3270,

Investigation of a cantilever structured piezoelectric energy harvester used for wearable devices with random vibration input

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Author: Bai, Yang1; Tofel, Pavel2; Hadas, Zdenek3;
Organizations: 1Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, FI-90014 Oulu, Finland
2Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3058/10, 616 00 Brno, Czech Republic
3Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2896/2, Brno 616 69, Czech Republic
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 2 MB)
Persistent link:
Language: English
Published: Elsevier, 2018
Publish Date: 2020-01-12


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 μW 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.

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Series: Mechanical systems and signal processing
ISSN: 0888-3270
ISSN-E: 1096-1216
ISSN-L: 0888-3270
Volume: 106
Pages: 303 - 318
DOI: 10.1016/j.ymssp.2018.01.006
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: This paper has been supported by the project “Novel material architectures for SMART piezoceramic electromechanical converters” GACR 17-08153S under Czech Science Foundation. The authors also acknowledge the use of the infrastructures in the SIX Centre (LO1401) and NETME Centre.
Copyright information: © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license