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Journal of Electrical and Computer Engineering
Volume 2012, Article ID 185959, 17 pages
http://dx.doi.org/10.1155/2012/185959
Research Article

An Efficient Renewable Energy Management and Sharing System for Sustainable Embedded Devices

1Department of Computer Science, State University of New York, Binghamton, NY 13905, USA
2College of Information Engineering, China Jiliang University, Hangzhou, Zhejiang 310018, China

Received 23 June 2011; Revised 26 October 2011; Accepted 6 November 2011

Academic Editor: Qinru Qiu

Copyright © 2012 Ting Zhu and Chang Zhou. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We present the design and evaluation of a capacitor-driven efficient renewable energy management and sharing system, called REMS system, that is designed to replace battery-based energy storage units. We first identify potential applications and requirements of the REMS system. Then we describe the design of REMS system which aims at minimizing the energy leaked away and providing accurate and fine-grained energy sharing between embedded devices. We extensively evaluate our system under different real-world settings. Results indicate that our charging and discharging control can effectively minimize the energy leaked away. Moreover, the energy sharing design can efficiently share renewable energy among multiple devices and significantly extend the lifetime of a system.