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|Title:||WinLight: a WiFi-based occupancy-driven lighting control system for smart building||Authors:||Zou, Han
Spanos, Costas J.
|Keywords:||Engineering::Electrical and electronic engineering||Issue Date:||2017||Source:||Zou, H., Zhou, Y., Jiang, H., Chien, S.-C., Xie, L., & Spanos, C. J. (2018). WinLight: a WiFi-based occupancy-driven lighting control system for smart building. Energy and Buildings, 158, 924-938. doi:10.1016/j.enbuild.2017.09.001||Journal:||Energy and Buildings||Abstract:||Artificial lighting accounts for a significant proportion (19%) of energy consumption in building environments. This large contribution calls for the creation of energy-efficient lighting control schemes. In this article, we present WinLight, a novel occupancy-driven lighting control system that aims to reduce energy consumption while simultaneously preserving the lighting comfort of occupants. By leveraging the fine-grained occupancy information estimated by existing WiFi infrastructure in a non-intrusive manner, WinLight computes an appropriate dimming command for each lamp based on a novel lighting control algorithm. A centralized lighting control system assigns these commands to a zonal gateway, and occupancy-driven lighting control is achieved by actuating the brightness adjustment with a local controller integrated within each lamp. Moreover, a WinLight App is designed to enable occupants to customize their luminance preferences and to control nearby lamps using their mobile devices. We implemented WinLight in a 1500 m2 multi-functional office in Singapore and conducted an experiment during 24 weeks. The experimental results demonstrate that WinLight achieves 93.09% and 80.27% energy savings compared to static scheduling lighting control scheme and PIR sensor based lighting control scheme while guaranteeing the personalized lighting comfort of each occupant.||URI:||https://hdl.handle.net/10356/141215||ISSN:||0378-7788||DOI:||10.1016/j.enbuild.2017.09.001||Rights:||© 2017 Elsevier B.V. All rights reserved.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||EEE Journal Articles|
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