The Goodyear & Tire Rubber Company

Sparsh Sharma

Kanwar Bharat Singh

Mustafa Ali Arat

Pieter-Jan Derluyn

An auto-location system locates a position of a tire. A tire sensor unit is mounted on the tire and measures a length of a footprint of the tire, and electronic memory capacity stores identification information for the tire sensor unit. A vehicle sensor unit is mounted on the vehicle and measures a lateral acceleration and a longitudinal acceleration. A processor is in electronic communication with the tire sensor unit and the vehicle sensor unit, and receives the measured footprint length, the identification information, the lateral acceleration, and the longitudinal acceleration. A virtual footprint length estimator employs the lateral acceleration and the longitudinal acceleration to estimate a virtual footprint length of the tire. A correlation module receives the virtual footprint length and the measured footprint length to generate correlation values. A decision arbitrator applies a set of decision rules to the correlation values to generate a wheel position indication.

System for auto-location of tires employing footprint length

An auto-location system includes a first tire sensor unit that measures a footprint length of a first tire. A second tire sensor unit measures a footprint length of a second tire. A vehicle status determination module receives the measured footprint lengths and determines when the vehicle is in a static or cruising state. A mean calculation module receives the measured footprint lengths when the vehicle is in a static or cruising state, and determines a first mean footprint length corresponding to the first sensor unit and a second mean footprint length corresponding to the second sensor unit. A comparison module receives the mean footprint lengths and determines a longest and a shortest of the mean footprint lengths. A position determination module generates a position determination of the first sensor unit and the second sensor unit based on the longest and the shortest of the mean footprint lengths.

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Luxembourg, Luxembourg

Sparsh Sharma