Citation:
Zhu, M. & Worthington, E. (2009) Design and testing of piezoelectric energy harvesting devices for generation of higher electric power for wireless sensor networks , 8th Annual IEEE Conference on Sensors 2009. 25-28 October, Christchurch New Zealand.
Abstract:
This paper reports our design and testing results on the electric output
performance of a vibration-based piezoelectric energy harvesting device (PEHD).
The PEHD is a cantilever with a sandwich structure and seismic mass attached to
the tip. The geometric parameters of the device are based on optimization design
with a volume of around 1cm3 and at a targeted resonant frequency of 80-100 Hz.
A maximum output power of 370μW at 15.5 volts into a 325kΩ resistive load is
generated at the resonant frequency of 87Hz and under an acceleration of 0.23g.
Quite remarkably, this power is a very encouraging power figure that gives the
prospect of being able to power a wider range of applications than is currently
possible in wireless sensor networ
