| 摘要 |
PROBLEM TO BE SOLVED: To detect the wear status of an object to be worn with high precision free of influence from changes in weather conditions and detection conditions. SOLUTION: Wireless tags 31 to 33, as transmitting means, are embedded at different depth in a tread section 22 forming a groove 21 of a tire 20 which is the object to be worn. Radio waves are transmitted from a query machine 41 to the tags 31 to 33. Data indicating either ID codes (ID1) to (ID3) from either tags 31 to 33 which received the radio waves are received by the query machine 41. When only the ID code (ID3) is received, for example, it is determined that wear in the groove 21 of the tire 20 is large and a limit is reached by allowing a processing unit 42 to perform data processing, and a tire groove warning is notified by a tire groove warning display section 43 by allowing the processing unit 42 to output a tire groove warning signal. COPYRIGHT: (C)2006,JPO&NCIPI
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