Geometric pattern of RFID multi-tag distribution in dynamic IOT environment

In order to improve the dynamical recognition efficiency of radio frequency identification (RFID) system and to reduce the reading error of measurement, a dynamical analysis method is proposed in this paper, in which Fisher information matrix is introduced into RFID multi-tag distribution. The optimal selection of system´s test point and the positioning effect of different planning paths could be evaluated by the Fisher information matrix with state parameters. In view of the rational distribution of RFID tags, the multi-tag geometrical patterns are given in dynamic internet of things (IOT) environment. The numerical simulation is shown that the tag number, path and speed could directly affect the RFID system´s performance. Furthermore, the planning paths, limiting target speed and adjusting test points in practical applications could improve the dynamic recognition efficiency, by analysing the recognition efficiency curve.