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Proceedings Paper

A novel method for piezoelectric energy harvesting from keyboard
Author(s): Levent Beker; Ali Muhtaroglu; Haluk Külah
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Paper Abstract

This paper presents a novel method and apparatus for converting keystrokes to electrical energy using a resonant energy harvester, which can be coupled with keyboards. The state-of-the-art dome switch design is modified to excite the tip of the energy harvester beam. Piezoelectric transduction converts vibrations to electrical power. The energy harvester design is optimized to give highest voltage output under use conditions, and is fabricated. A close match is observed for the first natural frequency. When the piezoelectric energy harvester is excited at 7.62 Hz with tip excitation to emulate keyboard use, 16.95 μW of power is generated.

Paper Details

Date Published: 27 March 2012
PDF: 8 pages
Proc. SPIE 8341, Active and Passive Smart Structures and Integrated Systems 2012, 83412H (27 March 2012); doi: 10.1117/12.915121
Show Author Affiliations
Levent Beker, Middle East Technical Univ. (Turkey)
Ali Muhtaroglu, Middle East Technical Univ. (Turkey)
Haluk Külah, Middle East Technical Univ. (Turkey)

Published in SPIE Proceedings Vol. 8341:
Active and Passive Smart Structures and Integrated Systems 2012
Henry A. Sodano, Editor(s)

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