Arrangement for detecting direction of movement of radio frequency identification tag along movement line, in e.g. logistics field, has evaluation unit to determine direction of movement of transponder based on asymmetry of progress curve

摘要

The arrangement has a radio-frequency identification (RFID) reader (100) comprising an antenna device (120) with a main beam direction (H). The reader receives a signal emitted from a transponder (200) i.e. RFID tag. A directional characteristic (R) of the antenna is oriented with respect to a movement line (B). A progress curve of signal strength is received during movement of the transponder along the movement line. An evaluation unit (110) is utilized to determine a direction of the movement of the transponder based on asymmetry of the progress curve. An independent claim is also included for a method for detecting a direction of movement of a transponder along a movement line.