A living laboratory study in personalized automated lighting controls

Authors:
Andrew Krioukov;Stephen Dawson-Haggerty;Linda Lee;Omar Rehmane;David Culler
Affiliations:
University of California, Berkeley;University of California, Berkeley;Loyola Marymount University;University of California, Berkeley;University of California, Berkeley
Venue:
Proceedings of the Third ACM Workshop on Embedded Sensing Systems for Energy-Efficiency in Buildings
Year:
2011

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Abstract

We report on an experimental case study of personalized lighting controls built on top of an infrastructure designed to enable rapid development of applications in commercial buildings. Our personalized lighting controls (PLC) use an existing standard commercial building lighting automation system and require no new hardware to deploy. PLC presents occupants with a "shared virtual light switch" accessible online and easily viewable on smart phones by scanning a QR code. It embodies three important design principles: individual empowerment with localized human-centered resolution, token effort for energy consumption and return to a low-power state when inactive. After deploying our lighting controls on two new floors of a large research building on campus, we show a sustainable reduction in lighting energy of 50% to 70% on both floors over 12 weeks, continuing to this day. These savings are found to come from a combination of reducing brightness and keeping lights on less often, especially during evenings and weekends.