| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle sensor system capable of detecting a state of each tire by a simple configuration and control. SOLUTION: An electromagnetic compass 301 of a vehicle 1 detects geomagnetism and calculates azimuth of the vehicle 1. An initiator 14F transmits signals indicating a sensor start command to wheels 2FR, 2FL by radio. A wheel interior sensor unit 3 mounted on each of the wheels 2 detects a state of the tire, and detects geomagnetism by the electromagnetic compass 301 to calculate azimuth of the wheel 2. In response to reception of the signals indicating the sensor start command, the wheel interior sensor unit 3 transmits, by radio, a signal including data indicating the tire state (pneumatic pressure, temperature, acceleration) and data indicating the azimuth of the wheel 2. An ECU 11 receives the signal, identifies the arrangement position of the wheel 2 based on the data on the azimuth of the wheel 2, and outputs the state of the tire of the wheel 2 to an indicator 41 based on the data indicating the tire state. COPYRIGHT: (C)2009,JPO&INPIT |
