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Wireless sensor system powered by an electromagnetic vibration energy harvester

Wireless sensor system powered by an electromagnetic vibration energy harvester
Wireless sensor system powered by an electromagnetic vibration energy harvester
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.
109-113
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Torah, R
7147b47b-db01-4124-95dc-90d6a9842688
Tudor, M
46eea408-2246-4aa0-8b44-86169ed601ff
O'Donnell, T
9122a8f1-90bf-457e-ad26-0585f36bbf90
Roy, S
e666eef6-02d8-4e39-bd06-2402d3cf77ec
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Torah, R
7147b47b-db01-4124-95dc-90d6a9842688
Tudor, M
46eea408-2246-4aa0-8b44-86169ed601ff
O'Donnell, T
9122a8f1-90bf-457e-ad26-0585f36bbf90
Roy, S
e666eef6-02d8-4e39-bd06-2402d3cf77ec

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), 109-113.

Record type: Article

Abstract

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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More information

Published date: May 2008
Organisations: EEE

Identifiers

Local EPrints ID: 266915
URI: http://eprints.soton.ac.uk/id/eprint/266915
PURE UUID: 38b77640-20b1-4602-9e70-c273f085d769
ORCID for Steve Beeby: ORCID iD orcid.org/0000-0002-0800-1759
ORCID for R Torah: ORCID iD orcid.org/0000-0002-5598-2860
ORCID for M Tudor: ORCID iD orcid.org/0000-0003-1179-9455

Catalogue record

Date deposited: 14 Nov 2008 16:56
Last modified: 13 Jan 2022 02:38

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Contributors

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

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