Evaluation of Occupancy Lighting Control Based on Low-Power Privacy-Preserving Sensor

抄録

This paper presents a valid algorithm for a fused sensor, which consists of a passive infrared (PIR) sensor and thermal-image-based sensor, to achieve both energy efficient and privacy in occupancy lighting control. The algorithm efficiently switches between the PIR and thermal-image-based sensors, depending on the lighting state. Additionally, the effectiveness of the fused sensor was verified through an experiment conducted in a single office section for 52.78 hours over eight days. The fused sensor significantly increased the occupancy control accuracy by at least 2.34% and energy-saving effect based on lighting time by at least 1.35% compared to either of its constituent sensors individually. Furthermore, the fused sensor had the lowest comprehensive energy consumption, which was computed as the sum of the energy consumption of both the sensor and light, with a reduction of at least 6.43%. Further comparisons and through discussions are presented in this paper.