Construction of illuminance distribution measurement system and evaluation of illuminance convergence in Intelligent Lighting System

There have been various studies on illuminance evaluation in offices, but due to the difficulty of measurement by using many illuminance sensors, few examples of measurement of illuminance distribution in offices exist until present. We have proposed an Intelligent Lighting System which is not the existing lighting system providing uniform illuminance, but can provide different illuminance by a worker's work content and preference. Illuminance distribution evaluation is important for the Intelligent Lighting System since it provides different illuminances to each worker. In this study, we structured a system which visualizes the illuminance data obtained from more than 160 illuminance sensors as real-time illuminance distribution, and report the result of evaluating the dynamic change of illuminance in the Intelligent Lighting System. Furthermore, we mention the measurement result of illuminance distribution in an actual office where the Intelligent Lighting System was introduced.