Method and RFID Writer-Reader for Selecting an RFID Data Carrier

摘要

A method and RFID writer-reader for selecting a RFID data carrier from a plurality of RFID data carriers detected by an RFID writer-reader, wherein the RFID data carrier of the RFID data carriers detected in productive operation is selected based on the respective degree of correspondence between sequences of actual values determined in productive operation that are compared with at least one sequence of setpoint values so as to reliably select a desired RFID data carrier even in difficult reception situations.

主权项

1. A method for selecting a radio frequency identification data (RFID) carrier from a plurality of radio frequency identification data carriers detected by an RFID writer-reader, the method comprising:
determining a setpoint value for a reception parameter of at least one specimen RFID data carrier to be selected during a training phase; relating actual values of reception parameters of detected RFID data carriers to the setpoint value for selecting the RFID data carrier from the detected RFID data carriers during productive operation; performing detections of the at least one specimen RFID data carrier during the training phase in a first temporal sequence, at least one sequence of setpoint values for at least one reception parameter being determined as a temporal profile curve; performing detections of RFID data carriers situated in a reception region of the RFID writer-reader during productive operation in a second temporal sequence, a sequence of actual values being determined as a temporal profile curve for each of the detected RFID data carriers; and comparing each sequence of the sequences of actual values determined in productive operation with the at least one sequence of setpoint values, the RFID data carrier of the RFID data carriers detected in productive operation being selected based on a respective degree of correspondence.