Energy harvesting from a rotating gear using an impact type piezoelectric MEMS scavenger

Author

Janphuang, P. ; Isarakorn, D. ; Briand, D. ; de Rooij, N.F.

Author_Institution

Sensors, Actuators & Microsyst. Lab. (SAMLAB), Ecole Polytech. Fed. de Lausanne (EPFL), Neuchâtel, Switzerland

fYear

2011

fDate

5-9 June 2011

Firstpage

735

Lastpage

738

Abstract

This paper reports on energy harvesting from an impact by using a piezoelectric MEMS scavenger. Useful electrical power is generated by the impact of the rotating gear on the MEMS piezoelectric transducer. The design of the device structure was based on both analytical and FEM models for the estimation of induced voltage generated from piezoelectric transducer. A prototyping of piezoelectric MEMS based impact harvester consisting of a piezoelectric unimorph transducer was operated on a gearbox with a speed of 25 rpm. For the cantilever type harvester occupying approximately 4.2 mm³, an average output power of 1.26 μW was measured across a resistive load of 2.7 MΩ.

Keywords

energy harvesting; finite element analysis; microsensors; piezoelectric transducers; FEM models; MEMS piezoelectric transducer; energy harvesting; impact type piezoelectric MEMS scavenger; piezoelectric MEMS based impact harvester; piezoelectric unimorph transducer; power 1.26 muW; resistance 2.7 Mohm; rotating gear; Analytical models; Energy harvesting; Finite element methods; Gears; Micromechanical devices; Power generation; Silicon; Impact energy harvesting; MEMS; PZT; piezoelectric; rotating gear;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International

Conference_Location

Beijing

ISSN

Pending

Print_ISBN

978-1-4577-0157-3

Type

conf

DOI

10.1109/TRANSDUCERS.2011.5969852

Filename

5969852