Radio frequency id doppler motion detector

G - Physics – 06 – K

Patent

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Details

G06K 7/00 (2006.01) G01S 7/35 (2006.01) G01S 13/56 (2006.01) G01S 13/82 (2006.01)

Patent

CA 2662175

A system and method for a radio frequency identification (RFID) reader for use in an RFID detection system. The reader has an RF source for generating RF signals. An antenna is coupled to the RF source. The antenna transmits interrogation RF signals to one or more RFID markers within an interrogation zone and receives communication signals from one or more items within the interrogation zone. The communication signals include Doppler signals indicating movement of an item within the interrogation zone. A receiver receives the communication signals and motion detection circuitry detects the Doppler signals.

L'invention concerne un système et un procédé destinés à un lecteur d'identification par radiofréquence (RFID) destiné à être utilisé dans un système de détection par RFID. Le lecteur comprend une source de radiofréquences produisant des signaux RF. Une antenne est couplée à la source RF. L'antenne transmet des signaux RF d'interrogation à un ou plusieurs marqueurs RFID à l'intérieur d'une zone d'interrogation et reçoit des signaux de communications provenant d'un ou plusieurs articles à l'intérieur de la zone d'interrogation. Les signaux de communication comprennent des signaux Doppler indiquant le mouvement d'un article dans la zone d'interrogation. Un récepteur reçoit les signaux de communication et le circuit de détection du mouvement détecte les signaux Doppler.

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