Patent ID: 9193224
Filing Date: 2015-11-24
Classification: B60C

Abstract:
1. A tire position determination system that determines positions of tires, the tire position determination system comprising: a tire pressure detector attached to each of the tires, wherein the tire pressure detector transmits a tire pressure signal; a receiver arranged on a vehicle body, wherein the receiver receives the tire pressure signal from each tire pressure detector; an axle rotation amount detector that detects a rotation amount of an axle corresponding to each of the tires; and an automatic locating function unit that calculates an axle rotational angle from an axle rotation amount detected by the axle rotation amount detector during a first vehicle stopping operation and an axle rotation amount detected by the axle rotation amount detector in a second vehicle stopping operation, calculates a detector rotational angle from a gravitational component force generated in the tire pressure detector during the first vehicle stopping operation and a gravitational component force generated in the tire pressure detector during the second vehicle stopping operation, and determines the position of each of the tires based on the axle rotational angle and the detector rotational angle, wherein each tire pressure detector is selectively operated in a pressure determination mode and an automatic locating mode, and each tire pressure detector includes