| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radio communication system for a rotational body that can perform stable radio communication at an entire position of the rotational body. <P>SOLUTION: A radio communication system for a rotational body 100 according to the invention has the structure of a loop-shaped electric path 23A of a tag antenna 23 provided in an IC tag 20 being extended between both ends of a band-shaped tag main body 21 and fixed, its tag main body 21 is wound so that it goes about one round the outer circumference surface of a rotor 60, and a space between both ends 23B, 23B of the tag antenna 23 in a circumferential direction of the rotor 60 is designed to be smaller than the width of a reception wave region R1 where a radio wave from a reader antenna 11 provided in a reader-writer 10 can be received. This allows radio communication between the reader antenna 11 and the tag antenna 23 to be performed regardless of the rotational position of the rotor 60. <P>COPYRIGHT: (C)2013,JPO&INPIT |
