| 摘要 |
<P>PROBLEM TO BE SOLVED: To shorten a processing time by enabling a communication only with an RFID tag required for recognizing a mobile in simple configuration and through simple processing. <P>SOLUTION: An antenna A is disposed in the vicinity of a route along which a mobile (pallet) P moves, and a fixed tag T is disposed at such a position as to receive a radio wave from the antenna A. Upon receiving a read command from the antenna A, a movable tag M mounted on the mobile P and the fixed tag T redirect response signals in fixed timing. The signal to be received from the fixed tag T by the antenna A becomes approximately fixed but while the movable tag M is positioned at a place to communicate with the antenna A, signals from the fixed tag T are mixed in signals transmitted from the movable tag M to the antenna A and may be brought into read disabled state. When the movable tag M is separated from the antenna A by a fixed distance or more, signals from the movable tag M are mixed in signals from the fixed tag T and may be brought into read disabled state. <P>COPYRIGHT: (C)2012,JPO&INPIT |
