公开(公告)号：EP2733644A4

公开(公告)日：2015-01-28

申请号：EP12811543

申请日：2012-07-12

Applicant: MIGHTY CARD CORP

Inventor： KAMIYA HAJIME

IPC: G06K17/00 ,  G01S13/50 ,  G01S13/52 ,  G01S13/58 ,  G01S13/76 ,  G01S13/78 ,  G06K7/10 ,  H04B1/59

CPC classification number: G06K7/10366 ,  G01S13/505 ,  G01S13/52 ,  G01S13/58 ,  G01S13/76 ,  G01S13/78

Abstract: Provided are an RFID tag movement distinguishing method and an RFID tag movement distinguishing program with which are an RFID tag that has moved in front of an antenna and an RFID tag that is static are identified based on chronological data of received radio wave strength, a phase, or a Doppler frequency of a read RFID tag obtained from a general RFID reader and a general antenna. Chronological read data of a plurality of RFID tags including a moving RFID tag and a static RFID tag is acquired by an RFID reader, and the static RFID tag is specified by a static RFID tag filter based on information of a plurality of read RFID tags based on a certain parameter. In the RFID tag movement distinguishing method, the static RFID tag filter identifies the moving RFID tag by identifying the static RFID tag and the moving RFID tag using at least one or more of individual static RFID tag filter among a quick-read filter, an RSSI absolute value filter, an RSSI non-contiguous increase filter, an RSSI valley-shaped filter, an excess read filter, a phase shift reduction filter, and a vertical direction movement filter.