| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tire condition measuring RFID system, an RFID tag, and a tire valve fitted with RFID tag capable of measuring the tire condition including the tire pressure etc. certainly. <P>SOLUTION: Through a magnetic substance 9, an antenna coil 3a is attached to the end inside the tire of a structure (valve system 8a and/or valve spud) constituting the tire valve 8 for introducing the air into the tire, and the electronic circuitries 10 such as an IC 3c of the tag, a pressure sensor 4, etc. are installed in tight attachment to the structure. Thereby the antenna coil 3a is free of breakage caused by fatigue, and the electronic circuitries 10 will never be destroyed by the heat. The influence of the centrifugal force can be lessened by lessening the distance from the rotary shaft. Even in case the tire is broken by puncture etc., the electronic circuits 10 and the antenna coil 3a can be used in such a condition as they are, and the mounting operations can be facilitated. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
