LOCATING DEVICE FOR EVALUATING THE DISTANCE BETWEEN AN RFID LABEL AND AN INTERFACE.

摘要

The invention relates to a device (7) for evaluating the distance of an RFID label from an interface between two environments, including: an antenna (13); a device (147) for measuring the distance between the antenna (13) of the device (7) and the interface; a power supply circuit (142, 143) configured to supply power to the antenna (13) such that the antenna generates an electromagnetic field having different sequential amplitude values; a device (1) for detecting a response of the label; a processing circuit (144) configured to: determine several pairs that each include: a distance measured between the antenna (13) and the interface; and a minimum electromagnetic field value generated at the antenna for which the label is detected at this distance; and evaluating the distance between the label and the interfaced depending on the determined pairs.