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The Scientific World Journal
Volume 2014, Article ID 851930, 16 pages
http://dx.doi.org/10.1155/2014/851930
Research Article

LED Context Lighting System in Residential Areas

1Green Energy Technology Research Center, Kongju National University, Cheonan 331-717, Republic of Korea
2Department of Computer Science and Engineering, Kongju National University, Cheonan 331-717, Republic of Korea

Received 7 April 2014; Accepted 31 May 2014; Published 29 June 2014

Academic Editor: Alessandro Moschitti

Copyright © 2014 Sook-Youn Kwon et al. 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

As issues of environment and energy draw keen interest around the globe due to such problems as global warming and the energy crisis, LED with high optical efficiency is brought to the fore as the next generation lighting. In addition, as the national income level gets higher and life expectancy is extended, interest in the enhancement of life quality is increasing. Accordingly, the trend of lightings is changing from mere adjustment of light intensity to system lighting in order to enhance the quality of one’s life as well as reduce energy consumption. Thus, this study aims to design LED context lighting system that automatically recognizes the location and acts of a user in residential areas and creates an appropriate lighting environment. The proposed system designed in this study includes three types of processing: first, the creation of a lighting environment index suitable for the user’s surroundings and lighting control scenarios and second, it measures and analyzes the optical characteristics that change depending on the dimming control of lighting and applies them to the index. Lastly, it adopts PIR, piezoelectric, and power sensor to grasp the location and acts of the user and create a lighting environment suitable for the current context.