| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide the end batch management system of an article for preventing the reading mistake of a radio tag from being generated in the case of performing bi-directional communication from an interrogator by attaching a radio tag to each of individual articles. <P>SOLUTION: The weight of an article 12 to which a radio tag 13 is attached is measured in a batch, and the quantity of a radio tag 13 as the object of bi-direction communication is calculated from the measured value, and compared with the total number of radio tags 13 which have returned a response signal to an interrogator 16, and whether or not there exists the radio tag 13 whose reading mistake has been generated is judged. When there exists any reading mistake, a transmission output from the interrogator 16 is increased by one level, and this is repeated until the reading mistake is canceled. On the other hand, when the satisfactory reading of all the radio tags 13 is continued by the fixed number of times, it is considered that the bidirectional communication with the radio tag 13 is sufficiently stabilized in that environment, and the transmission output from the questioning unit 16 is decreased by one level. <P>COPYRIGHT: (C)2009,JPO&INPIT |
