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An Energy-saving Design of Smart Light Controller Based on the Position of Person

Public lighting has become a large energy consumption in the building automation. Therefore, it is a hot topic to design a reasonable and effective controller for smart light. Based on the calculation formula of the personnel location and the related knowledge of solid geometry and optics, this paper develops a lighting model which is mapping form the person’s position to the lighting area. Using this model, the lighting strategy, which satisfies both the energy saving and the personnel comfortableness, will be obtained. Numerical results show that with the movement of person the lamps also change to meet the illumination standard and to minimize the energy consumption. In this situation, the energy consumption of the lighting system reduces.