Method and system for correctly identifying specific RFID tags

摘要

A system and method for identifying a specific RFID tag includes RFID reader circuitry, such as within an RFID reader, configured for sending and receiving RF signals to detect RFID tags and for obtaining signal parameter information associated with the RFID tags. Processing circuitry is configured for using the signal parameter information for one or more tags of the RFID tags and calculating a tag score for the one or more RFID tags. The processing circuitry is further configured for determining a specific RFID tag using the tag scores for the one or more RFID tags.

主权项

1. A method for identifying a specific RFID tag, the method comprising:
sending and receiving RF signals, using an RFID reader, to detect RFID tags and obtain signal parameter information associated with the RFID tags; determining a received signal strength indication (RSSI) value for each of the RFID tags; determining an occurrence frequency value for each of the RFID tags; calculating a tag score for each of the RFID tags using both the RSSI value and occurrence frequency value for the respective RFID tags; determining a difference between a highest tag score of the calculated tag scores for the RFID tags and a next highest tag score of the calculated tag scores for the RFID tags; and comparing the difference with a first threshold value; and identifying the RFID tag having the highest tag score as the specific RFID tag in response to the difference being greater than the first threshold value.