A system for multi-standard rfid tags

G - Physics – 01 – V

Patent

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Details

G01V 3/12 (2006.01) G01S 13/76 (2006.01) G08C 17/02 (2006.01)

Patent

CA 2395847

A reader for a radio frequency identification system capable of simultaneously reading tags operating multiple frequencies. The reader includes a radio frequency module for each operating frequency of the tags. The radio frequency modules are coupled to a bus which is connected to an interrogator control module. Each of the radio frequency modules receives the return signal from the tags at the associated operating frequency and converts the return signal into a pulse sequence. The interrogator control module locks to and decodes the pulse sequence according to the protocol associated with the tag type.

Lecteur pour système d'identification radio fréquence capable de lire simultanément des étiquettes et fonctionnant à des fréquences multiples. Le lecteur comprend un module radio fréquence pour chaque fréquence de fonctionnement des étiquettes. Les modules radio fréquence sont couplés à un bus qui est connecté à un module de commande interrogateur. Chacun des modules radio fréquence reçoit le signal retour provenant des étiquettes à la fréquence de fonctionnement associée et transforme le signal retour en une séquence d'impulsions. Le module de commande interrogateur bloque et décode la séquence d'impulsions conformément au protocole associé au type d'étiquette.

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