TIRE PNEUMATIC PRESSURE LOWERING DETECTION METHOD AND DEVICE, AND PROGRAM OF TIRE DECOMPRESSION DETERMINATION

摘要

PROBLEM TO BE SOLVED: To provide a tire pneumatic pressure lowering detection method which can optimize a time and accuracy required for initialization.;SOLUTION: The tire pneumatic pressure lowering detection method detects the lowering of tire pneumatic pressure based on wheel speed obtained from a tire installed on a four-wheel vehicle. This method includes a step to measure the wheel speed of each of the tires, a steps to store the wheel speed of each of the tires, a step to determine whether or not right and left tires of drive wheels and/or driven wheels of the vehicle are the same kind of tires based on tire information obtained from a radio ID tag embedded in the tire, and a step to determine the lowering of the tire pneumatic pressure using a wheel speed or a relative speed ratio corrected by the result of the determination.;COPYRIGHT: (C)2005,JPO&NCIPI