| 摘要 |
PROBLEM TO BE SOLVED: To enable notification of air pressure state of wheels to the outside of a vehicle. SOLUTION: Wheel information including the air pressure state detected with an air pressure sensor 50 is transmitted at the wheel side devices 10 to 16, and is received at the vehicle body side device 28. The air pressure value is obtained based on the wheel information received at the vehicle body side device 28. During supplying air pressure to the tire, a lamp 91 provided at the outside of the vehicle body is blinked in a pattern A when the air pressure value reaches the target value, and is blinked in a pattern B when it reaches (target value + alpha). The operator at the outside of the vehicle can know the air pressure of the tire based on the blinking state of the lamp 91, and can know the supply operation state of the air pressure. COPYRIGHT: (C)2005,JPO&NCIPI
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