Active RFID-Based Object Management System in Sensor-Embedded Environment

In this paper, we proposed the object location estimation method in sensor-embedded environment using active Radio Frequency Identification (RFID) technology. Based on the proposed method, we have developed the indoor object management system, which provides users with three main functionalities: the ability to access and manage targeted objects in the environment, real-timely monitor their locations, record and later search the particular information from historical database. The estimation of object´s location is based on the analysis of RF signal strength retrieved from RFID system and position tracking of a person in the room using floor-distributed pressure sensors. The experiment result has shown that the integration of sensors significantly reduce the effects from external interferences in the analysis of RF signal strength, and improve the accuracy of object location sensing.