| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a tire pneumatic pressure-monitoring device capable of restraining an influence of a heat source and notify properly information about tire pneumatic pressure. <P>SOLUTION: A sensor detection temperature just before a gradient (a) of the sensor detection temperature exceeds a prescribed value (a<SB POS="POST">max</SB>) is calculated as a system estimation temperature TempP, when the gradient (a) at a predetermined time T increases to exceed the prescribed value (a<SB POS="POST">max</SB>) and a vehicular speed V is not larger than the prescribed speed Vth, and an alarm threshold value (Pwarm×80%) for issuing an alarm about going-down of the tire pneumatic pressure is corrected based on the system estimation temperature TempP, to be informed to a driver based on a corrected alarm threshold value. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
