Design considerations of sub-mW indoor light energy harvesting for wireless sensor systems

dc.contributor.authorWang, Wensi S.
dc.contributor.authorO'Donnell, Terence
dc.contributor.authorWang, Ningning
dc.contributor.authorHayes, Michael
dc.contributor.authorO'Flynn, Brendan
dc.contributor.authorÓ Mathúna, S. Cian
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderEnterprise Irelanden
dc.date.accessioned2011-07-28T13:39:41Z
dc.date.available2011-07-28T13:39:41Z
dc.date.copyright2010-06
dc.date.issued2010-06
dc.description.abstractFor most wireless sensor networks, one common and major bottleneck is the limited battery lifetime. The frequent maintenance efforts associated with battery replacement significantly increase the system operational and logistics cost. Unnoticed power failures on nodes will degrade the system reliability and may lead to system failure. In building management applications, to solve this problem, small energy sources such as indoor light energy are promising to provide long-term power to these distributed wireless sensor nodes. This paper provides comprehensive design considerations for an indoor light energy harvesting system for building management applications. Photovoltaic cells characteristics, energy storage units, power management circuit design and power consumption pattern of the target mote are presented. Maximum power point tracking circuits are proposed which significantly increase the power obtained from the solar cells. The novel fast charge circuit reduces the charging time. A prototype was then successfully built and tested in various indoor light conditions to discover the practical issues of the design. The evaluation results show that the proposed prototype increases the power harvested from the PV cells by 30% and also accelerates the charging rate by 34% in a typical indoor lighting condition. By entirely eliminating the rechargeable battery as energy storage, the proposed system would expect an operational lifetime 10-20 years instead of the current less than 6 months battery lifetimeen
dc.description.sponsorshipScience Foundation Ireland (ITOBO (398-CRP)); Enterprise Ireland (BuildWise (RI2407)); Science Foundation Ireland (CSET - Centre for Science, Engineering and Technology, Grant No. 07/CE/11147)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationWang, W. S., O'Donnell, T., Wang, N., Hayes, M., O'Flynn, B. and O'Mathuna, C. (2010) 'Design considerations of sub-mW indoor light energy harvesting for wireless sensor systems', ACM Journal on Emerging Technologies in Computing Systems (JETC), 6(2), pp. 1-26. doi: 10.1145/1773814.1773817en
dc.identifier.doi10.1145/1773814.1773817
dc.identifier.endpage26en
dc.identifier.issn1550-4832
dc.identifier.issn1550-4840
dc.identifier.issued2en
dc.identifier.journaltitleJournal on Emerging Technologies in Computing Systemsen
dc.identifier.startpage1en
dc.identifier.urihttps://hdl.handle.net/10468/380
dc.identifier.volume6en
dc.language.isoenen
dc.publisherACMen
dc.relation.urihttp://doi.acm.org/10.1145/1773814.1773817
dc.rights© ACM, 2010. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in ACM Journal on Emerging Technologies in Computing Systems (JETC), {Vol. 6, Iss. 2, June 2010} http://doi.acm.org/10.1145/1773814.1773817en
dc.subjectDesign considerationen
dc.subjectEnergy harvestingen
dc.subjectPV cellsen
dc.subjectMaximum power point trackingen
dc.subjectIndoor light illuminanceen
dc.subjectSupercapacitoren
dc.subject.lcshWireless sensor nodesen
dc.subject.lcshWireless sensor networksen
dc.titleDesign considerations of sub-mW indoor light energy harvesting for wireless sensor systemsen
dc.typeArticle (peer-reviewed)en
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