DEVICE FOR DETECTING POSITION OF RFID TAG

PROBLEM TO BE SOLVED: To provide a device for detecting the position of RFID tags having high detection resolution by using a relatively small directivity beam antenna device. SOLUTION: The device for detecting the position of RFID tags includes a directivity beam antenna receiving a radio wave from...

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Bibliographische Detailangaben
Hauptverfasser:	KEGASA MITSUYOSHI, MANABE CHITAKA
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CALCULATING COMPUTING COUNTING DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES HANDLING RECORD CARRIERS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS PRESENTATION OF DATA RADIO DIRECTION-FINDING RADIO NAVIGATION RECOGNITION OF DATA RECORD CARRIERS TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a device for detecting the position of RFID tags having high detection resolution by using a relatively small directivity beam antenna device. SOLUTION: The device for detecting the position of RFID tags includes a directivity beam antenna receiving a radio wave from the RFID tags to be measured, measures reception intensity of the radio wave from the RFID tags with the direction of the directivity beam antenna changed, and detects the directional position a having the maximum value of the measured reception intensity as the position of the RFID tags. The position of the RFID tags is correctly detected by selecting the amount of step changes (change angle) of the direction of the directivity beam antenna so that one or more RFID tags enters within a single change angle. COPYRIGHT: (C)2011,JPO&INPIT