SYSTEM FOR MONITORING PRESSURE OF TIRES OF MOTOR VEHICLE

摘要

PROBLEM TO BE SOLVED: To specify a wheel in a tire pressure monitoring system by use of a method capable of shortening the transmission time of a sensor. SOLUTION: The system for monitoring pressures of tires of a motor vehicle with location of the wheels comprises a monitoring element and a pressure sensor. Each pressure sensor is associated with a transmitter with which it transmits to the monitoring element a radio signal including sensor identification data. This system comprises a means for determining the phase shift between two radio signals transmitted at two distinct times for every wheel. The system further comprises a means for determining the rotation angle, modulo 2π, traveled by each of the wheels between the two times. This system further comprises a means for comparison between the phase shift and the rotation angles. COPYRIGHT: (C)2004,JPO