Patent ID: 9061554
Filing Date: 2015-06-23
Classification: B60C

Abstract:
1. A tire position determination system arranged in a vehicle including a direct type tire pressure monitoring unit, the tire position determination system comprising: a tire pressure detector coupled to a tire; a tire position determination unit that locates the tire pressure detector and determines a mounting position of the tire; a gravitational component force detection unit arranged in the tire pressure detector, wherein the gravitational component force detects gravitational force applied to the tire pressure detector and generates gravitational force information based on the detected gravitational force; a characteristic value acquisition unit that acquires a characteristic value corresponding to an angle of the tire pressure detector based on the gravitational force information generated by the gravitational component force detection unit, wherein the characteristic value acquisition unit acquires a first characteristic value of the tire pressure detector when a drive source of the vehicle is stopped, and the characteristic value acquisition unit acquires a second characteristic value of the tire pressure detector when the drive source of the vehicle is started; a characteristic value comparator that compares the first characteristic value and the second characteristic value; and an operation control unit that determines whether the mounting position of the tire has been changed based on the comparison of the characteristic value comparator, wherein the operation control unit controls the tire pressure monitoring unit based on the determination.