The present invention addresses the problem of acquiring, with high precision, whether or not a wheel is in a state in which the air pressure of a tire is abnormal. In this wheel state acquisition system, a temperature correction air pressure, which is an air pressure when the temperature inside a tire is a predetermined set temperature, is acquired on the basis of a detected air pressure and a detected temperature of the tire for each of a plurality of wheels. Furthermore, when the amount of decrease (positive value) in the temperature correction air pressure for one wheel (A) among the plurality of wheels is greater than the amount of decrease in the temperature correction air pressure for each of the other wheels, a state in which the air pressure of the tire is abnormal for the one wheel (A) is acquired. In the traveling state of a vehicle, the air pressure is reduced due to the reduction of the temperature inside the tire. In this wheel state acquisition system, since the amount of decrease in the air pressure is corrected on the basis of the temperature, it is possible to accurately acquire whether or not the wheel is in a state in which the air pressure of the tire is abnormal.
本发明的课题在于高精度取得车轮是否是轮胎的空气压力异常的状态。在本车轮状态取得系统中,基于关于多个车轮的每一个的轮胎的检测空气压力和检测温度来分别取得轮胎的内部的温度是预先决定的设定温度的情况下的空气压力亦即温度修正空气压力。而且,在关于多个车轮中的一个车轮A的温度修正空气压力的降低量(正值)大于关于其他车轮的每一个的温度修正空气压力的降低量的情况下,取得为一个车轮A是轮胎的空气压力异常的状态。在车辆的行驶状态下,存在因轮胎的内部的温度的降低而空气压力降低的情况。对于此,在本车轮状态取得系统中,由于基于温度修正空气压力的降低量,所以能够高精度地取得车轮是否是轮胎的空气压力异常的状态。
Wheel state acquisition system
车轮状态取得系统
2024-04-23
Patent
Electronic Resource
Chinese
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