An arc-shaped electromagnetic energy harvester for ultra-low frequency vibrations and swing motions

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dc.contributor.author Fan, K en
dc.contributor.author Tan, Q en
dc.contributor.author Tang, Lihua en
dc.coverage.spatial Denver, CO, US en
dc.date.accessioned 2019-05-27T02:22:30Z en
dc.date.issued 2019-03-21 en
dc.identifier.issn 1996-756X en
dc.identifier.uri http://hdl.handle.net/2292/46539 en
dc.description.abstract This letter presents a bi-directional electromagnetic energy harvester (EMEH) that consists of a spherical magnet encapsulated in an arc-shaped tube and two sets of coils wrapped around the tube. Two springs are affixed at the two ends of the tube to reduce the impact-induced energy dissipation and recycle the kinetic energy of the magnet. Experimental studies reveal that the arc-shaped EMEH is capable of capturing energy from ultra-low frequency vibrations that come from two orthogonal directions. Moreover, under the swing motion, the magnet is driven by its geopotential energy to move along the inner surface of the tube and then induce the coils to generate electrical power. Experimental measurements with the arc-shaped EMEH attached on human limbs show that the proposed design could perform simultaneous energy extraction from the vibration and swing motion even though they come from different directions, demonstrating the superior adaptability to the diverse excitations that are abundant in our living environment. en
dc.publisher Society of Photo-optical Instrumentation Engineers en
dc.relation.ispartof SPIE Smart Structures and Materials+ Nondestructive Evaluation and Health Monitoring en
dc.relation.ispartofseries Proceedings of SPIE en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title An arc-shaped electromagnetic energy harvester for ultra-low frequency vibrations and swing motions en
dc.type Conference Item en
dc.identifier.doi 10.1117/12.2513792 en
pubs.volume 10967 en
dc.rights.holder Copyright: The author en
pubs.finish-date 2019-03-07 en
pubs.start-date 2019-03-03 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Proceedings en
pubs.elements-id 766622 en
pubs.org-id Engineering en
pubs.org-id Mechanical Engineering en
pubs.record-created-at-source-date 2019-03-22 en


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