An Intelligent Lighting System to Realize Individual Lighting Environments Based on Estimated Daylight Distribution

概要

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When we introduced a lighting system to realize individual lighting environments into real office environments, difficulties arose in placing illuminance sensors on users' workplanes. This study hence proposes a new approach to control a lighting system intended to realize individual lighting environments without placing illuminance sensors on users' workplanes. This system uses illuminance sensors for measuring not the illuminance on workplanes but that of daylight: it optimizes lighting based on simulations for different luminous intensities of lighting and patterns of daylight illuminance distribution which are estimated from measurements by daylight illuminance sensors. An experiment to converge illuminance at target positions into target illuminance levels was conducted in a setting with 15 fluorescent lights and 9 illuminance sensors, which was intended to simulate a real office environment. The result indicated that such a system can realize illuminance levels required by individual users with minimum power consumption responding to changing daylight conditions.
2011-07-11