Systems and methods for tracking the location of items...

H - Electricity – 04 – B

Patent

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H04B 1/38 (2006.01)

Patent

CA 2537228

A location tracking system for tracking the location of items within a controlled area comprises a plurality of RFID tags located according to the required accuracy of the location determinations. Vehicles configured to transport items being tracked include two RFID interrogators configured to acquire RFID information from the plurality of RFID tags and to transmit the RFID tag information to a location authority. The separation the two RFID interrogators is set based on the spacing of the plurality of RFID tags such that the required accuracy results. The location authority can then simply map the RFID tag information to coordinate information stored for each of the plurality of tags to obtain the location of the vehicle and, therefore, the item being transported.

Ce système de localisation d'articles dans une zone contrôlée comprend plusieurs étiquettes d'identification radiofréquence localisées avec la précision permise par la définition des emplacements. Les véhicules utilisés pour le transport des articles à localiser comportent deux interrogateurs d'identification radiofréquence prévus, d'une part pour capter l'information d'identification radiofréquence des différentes étiquettes, et d'autre part pour retransmettre cette information à la centrale de localisation. L'écart entre les deux interrogateurs est défini en fonction d'un espacement entre étiquettes compatible avec la précision demandée. La centrale de localisation est alors capable de pointer l'information de l'étiquette dans un système de coordonnées et d'enregistrer de pointage pour chacune des étiquettes, ce qui permet de connaître la position du véhicule, et par conséquent de l'article transporté.

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