Using cooperative PIR sensing for human indoor localization

Pyroelectric infrared (PIR) sensors are low-cost, low-power sensors, which are widely used in energy saving systems and alarm systems. Currently, two approaches are applied to detect the location of residents: terminal-based and non-terminal-based methods. The difference is whether the user needs to carry a terminal device. In this paper, PIR is used to compose the non-terminal indoor localization system mounted on the ceiling. The proposed PIR detection module (PDM) system consists of two PIR modules. The object space is divided into discrete cells by using appropriate reference structures. After analyzing collected infrared signal of human sensing, the target location can be estimated. To assess the system performance, two experiments are conducted to present the performance comparison among the proposed system and the existing methods. The experimental results show that the proposed system with 2 PIR modules achieve simplified system design and better estimation accuracy.