Radio frequency identification system for use in access monitoring system for identifying object, has evaluation device determining motion information and/or position information from characteristics of transmission paths

摘要

The system (10) has antennas (24, 26) mounting transmission paths (46, 47) towards radio frequency identification labels (42-44) brought in a reception region of the antennas. An evaluation device (50) determines motion information and/or position information from characteristics of the paths, where the motion information and/or position information describes a motion direction of the labels. The device comprises a correlation data storage (52), which contains information about a correlation between the motion information and/or position information and change of receiving field intensity. An independent claim is also included for a method for determining motion direction and/or a position of a radio frequency identification label relative to an antenna.