Smart office lighting control using occupancy sensors

Abstract

Nowadays, despite the use of efficient LED lighting, lighting consumes a considerable amount of energy. To reduce the energy consumption, many office lighting systems are equipped with occupancy sensors. Since these sensors have a limited reliability in detecting presence, usually very conservative strategies are used such as keeping the lights on for fifteen minutes after the last detected presence. In this paper, we propose a novel lighting control strategy for an office that considers the sensor output as a noisy observation of the real occupancy status. Simulation results show that compared with conventional “on/off” strategy, it saves more energy.