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A Novel Miniature Wind Generator for Wireless Sensing Applications

A Novel Miniature Wind Generator for Wireless Sensing Applications
A Novel Miniature Wind Generator for Wireless Sensing Applications
This paper describes a novel miniature wind generator for wireless sensing applications. The generator consists of an aerofoil that is attached to a cantilever spring. The airflow over the aerofoil causes the cantilever to bend, the degree of bending being a function of the lift force from the aerofoil and the spring constant. As the cantilever deflects, the flow of air is reduced by a bluff body and the lift force therefore decreases causing the cantilever to spring back. The aerofoil is hence exposed to the full airflow again and the cycle is repeated. When the frequency of the movement matches the resonant frequency of the structure, the aerofoil has the maximum displacement. A permanent magnet is fixed on the aerofoil and a coil is attached to the base of the generator. The movement of the aerofoil causes the magnetic flux cutting the coil to change, which generates electrical power. The device has dimensions of 12 cm × 8 cm × 6.5 cm. Experiments have shown that the generator can operate at wind speeds as low as 2.5 m•s-1 with a corresponding electrical output power of 470 µW. This is sufficient for periodic sensing and wireless transmission. When the wind speed is 5 m•s-1, the output power is 1.6 mW.
Zhu, Dibin
ec52eae1-39fa-427c-968b-e76089a464a6
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Tudor, John
46eea408-2246-4aa0-8b44-86169ed601ff
White, Neil
c7be4c26-e419-4e5c-9420-09fc02e2ac9c
Harris, Nick
237cfdbd-86e4-4025-869c-c85136f14dfd
Zhu, Dibin
ec52eae1-39fa-427c-968b-e76089a464a6
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Tudor, John
46eea408-2246-4aa0-8b44-86169ed601ff
White, Neil
c7be4c26-e419-4e5c-9420-09fc02e2ac9c
Harris, Nick
237cfdbd-86e4-4025-869c-c85136f14dfd

Zhu, Dibin, Beeby, Steve, Tudor, John, White, Neil and Harris, Nick (2010) A Novel Miniature Wind Generator for Wireless Sensing Applications. At IEEE Sensors 2010 (04/11/10) IEEE Sensors 2010, United States. 01 - 04 Nov 2010.

Record type: Conference or Workshop Item (Poster)

Abstract

This paper describes a novel miniature wind generator for wireless sensing applications. The generator consists of an aerofoil that is attached to a cantilever spring. The airflow over the aerofoil causes the cantilever to bend, the degree of bending being a function of the lift force from the aerofoil and the spring constant. As the cantilever deflects, the flow of air is reduced by a bluff body and the lift force therefore decreases causing the cantilever to spring back. The aerofoil is hence exposed to the full airflow again and the cycle is repeated. When the frequency of the movement matches the resonant frequency of the structure, the aerofoil has the maximum displacement. A permanent magnet is fixed on the aerofoil and a coil is attached to the base of the generator. The movement of the aerofoil causes the magnetic flux cutting the coil to change, which generates electrical power. The device has dimensions of 12 cm × 8 cm × 6.5 cm. Experiments have shown that the generator can operate at wind speeds as low as 2.5 m•s-1 with a corresponding electrical output power of 470 µW. This is sufficient for periodic sensing and wireless transmission. When the wind speed is 5 m•s-1, the output power is 1.6 mW.

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More information

Published date: November 2010
Additional Information: Event Dates: November 1-4, 2010
Venue - Dates: IEEE Sensors 2010, United States, 2010-11-01 - 2010-11-04
Organisations: EEE

Identifiers

Local EPrints ID: 271682
URI: https://eprints.soton.ac.uk/id/eprint/271682
PURE UUID: 29aeba6f-9d77-4442-a26f-d76e69b69755
ORCID for Steve Beeby: ORCID iD orcid.org/0000-0002-0800-1759
ORCID for Neil White: ORCID iD orcid.org/0000-0003-1532-6452
ORCID for Nick Harris: ORCID iD orcid.org/0000-0003-4122-2219

Catalogue record

Date deposited: 08 Nov 2010 10:51
Last modified: 31 Jul 2018 00:36

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