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wireless sensor system powered by an electromagnetic vibration energy harvester

Beeby, Steve, Torah, R, Tudor, M, O'Donnell, T and Roy, S (2008) wireless sensor system powered by an electromagnetic vibration energy harvester Journal for the Institute of Measurement and Control, 41, (4), pp. 109-113.

Record type: Article


This paper describes a microscale electromagnetic vibration powered generator that harvests kinetic energy and provides a localised power supply for wireless applications. The generator is as resonant device and therefore the power output depends upon the size of the inertial mass, the frequency and amplitude of the driving vibrations, the maximum available mass displacement and the damping. The electromagnetic generator has been implemented with discrete components and produces 58 ?Wrms at 0.6 ms-2 acceleration from a fixed frequency of 52 Hz and achieves the highest recorded efficiency to date of 51% for a device of this size. The packaged device is 0.8 cm3 and weighs 1.6 grams. The energy harvested is sufficient to power a wireless, accelerometer based microsystem. The microsystem is energy aware and will adjust the measurement/transmit duty cycle according to the available energy; this is typically every 3 seconds during normal operation.

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Published date: May 2008
Organisations: EEE


Local EPrints ID: 266915
PURE UUID: 38b77640-20b1-4602-9e70-c273f085d769
ORCID for Steve Beeby: ORCID iD

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Date deposited: 14 Nov 2008 16:56
Last modified: 18 Jul 2017 07:10

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Author: Steve Beeby ORCID iD
Author: R Torah
Author: M Tudor
Author: T O'Donnell
Author: S Roy

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