@inproceedings{59b4ef4b176d44dabcb50532daefec16,
title = "Indirect impact based piezoelectric energy harvester for low frequency vibration",
abstract = "This paper presents an impact based piezoelectric vibration energy harvester using freely movable metal spheres as proof mass and an MFC (Macro Fiber Composite) beam as a piezoelectric cantilever. External vibration is transformed into free motion of metal spheres inside the channels and impact between the metal sphere and channel end induces a vibration of the MFC beam to generate electric power. A proof-of-concept device having the form-factor of a conventional wristwatch has been designed and tested to harvest energy from low frequency human-body-induced vibrations. Geometry at both ends of the cavities has been optimized to effectively transmit energy to piezoelectric cantilever and thus achieve a higher output power. For a device having an effective volume of 4.59cm3, maximum peak-to-peak open circuit voltage of 54V and RMS output power of 621μW have been achieved, when the fabricated energy harvester was mounted on a wristwatch and shaken manually.",
keywords = "Indirect impact, Macro fiber composite, Vibration energy harvesting",
author = "S. Ju and Ji, {C. H.}",
note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; null ; Conference date: 21-06-2015 Through 25-06-2015",
year = "2015",
month = aug,
day = "5",
doi = "10.1109/TRANSDUCERS.2015.7181325",
language = "English",
series = "2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1913--1916",
booktitle = "2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015",
}