| 摘要 |
PROBLEM TO BE SOLVED: To enable a transferring car to accurately receive travel control information transmitted from an ID tag, by positioning a magnetic shield material between the ID tag and a conductive fitting position. SOLUTION: A belt-form guide line L guiding a transferring car is laid on a conductive floor face. An ID tag T is fitted onto the guide line L together with a magnetic shield material 10 and a non-magnetic spacer 11 separating the magnetic shield material 10 from the ID tag T. Since the magnetic shield material 10 prevents radio wave instructions transmitted from the car from reaching the fitted position of the ID tag T, eddy currents resulting from the radio wave transmitted from the car are prevented and hence, the car receives transmitted instructions and the travel control information transmitted by the ID tag T is securely received. |
