A Study on Indoor Dimming Method Utilizing Outside Light for Power Saving

Abstract

In the next generation power networks, more energy saving and energy-efficient network are required. One of the solutions is a location-aware energy distribution scheme, where persons' location is accurately estimated by a centimeter-order indoor localization scheme and the energy is preferentially allocated to the electric equipment near the persons. As one of its applications, there is an energy-saving indoor lighting control scheme exploiting person's location information and the estimated illumination intensity, and large energy saving effects are obtained. We have proposed an indoor diming scheme that considers an external light in previous studies. However, in the previous study, advanced intensity measurements at many reference points were required. Therefore, in this paper, we propose an energy-saving indoor lighting control method that uses an estimated external light to reduce the measurement points. Numerical results show the advanced performance of the proposed method.