A travelling state determination unit of a tire pressure detector determines a travelling state of a vehicle based on a gravitational component force detected by an acceleration sensor. An operation mode switching unit of the tire pressure detector switches the operation mode of the tire pressure detector from a pressure determination mode to an automatic locating mode when the vehicle speed become lower than a threshold value. An interval of period transmission of radio waves in the automatic locating mode is set to be shorter than an interval of the periodic radio wave transmission in the pressure determination mode.
Tire position determination system
2015-11-24
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |