Patent ID: 7248953
Filing Date: 2007-07-24
Classification: B60C

Abstract:
1. A wheel-state obtaining apparatus comprising: a wheel-side device provided for each of at least one of a plurality of wheels of a vehicle and including a first-wheel-state detecting device operable to detect a first state of the corresponding wheel and a wheel-side-information transmitting device operable to transmit, in a wireless fashion at a time interval, wheel-side information representative of said first state of said corresponding wheel detected by said first-wheel-state detecting device; and a body-side device disposed on a body of the vehicle and including (a) a detected-information obtaining device operable to obtain detected information representative of the first state of said corresponding wheel detected by said first-wheel-state detecting device, (b) a vehicle-state detecting device operable to detect a state of the vehicle, (c) an estimated-information obtaining device operable to estimate said first state of said corresponding wheel on the basis of at least the state of the vehicle detected by said vehicle-state detecting device, and obtain estimated information representative of the estimated first state, and (d) a determining device operable to determine one of said detected information and said estimated information, as wheel-state information representative of said first state of said corresponding wheel, and wherein said estimated-information obtaining device is operable to obtain said estimated information, during a period between a moment of last reception of said wheel-side information by said body-side device from said wheel-side-information transmitting device, and a moment which is said time interval after said moment of last reception, said determining device including a first determining portion operable to determine, as said wheel-state information, said estimated information obtained during said period.