US 11,981,163 B2
Tire wear state estimation system and method employing footprint shape factor
Kanwar Bharat Singh, Lorenztweiler (LU); and Mustafa Ali Arat, Ettelbruck (LU)
Assigned to The Goodyear Tire & Rubber Company, Akron, OH (US)
Filed by The Goodyear Tire & Rubber Company, Akron, OH (US)
Filed on Aug. 20, 2020, as Appl. No. 16/998,380.
Claims priority of provisional application 62/893,860, filed on Aug. 30, 2019.
Prior Publication US 2021/0061020 A1, Mar. 4, 2021
Int. Cl. B60C 11/24 (2006.01); B60C 19/00 (2006.01); G01M 17/02 (2006.01); H04L 12/40 (2006.01)
CPC B60C 11/243 (2013.01) [B60C 11/246 (2013.01); B60C 19/00 (2013.01); G01M 17/02 (2013.01); H04L 12/40 (2013.01); B60C 2019/004 (2013.01); H04L 2012/40273 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A tire wear state estimation system comprising:
a tire supporting a vehicle;
a first sensor unit being mounted on the tire, the first sensor unit including a footprint centerline length measurement sensor to measure a centerline length of a footprint of the tire;
a second sensor unit being mounted on the tire, the second sensor unit including a shoulder length measurement sensor to measure a shoulder length of the footprint of the tire;
wherein at least one of the first sensor unit and the second sensor unit includes:
a pressure sensor to measure a pressure of the tire;
a temperature sensor to measure a temperature of the tire; and
electronic memory capacity for storing identification information for the tire;
a processor in electronic communication with the first sensor unit and the second sensor unit, wherein the processor:
obtains, from the first sensor unit, the measured centerline length;
obtains, from the second sensor unit, the measured shoulder length; and
obtains, from at least one of the first sensor unit and the second sensor unit, the measured pressure, the measured temperature, and the identification information;
a tire construction database in electronic communication with the processor, wherein the processor obtains, from the tire construction database, tire construction data correlated to the identification information;
an analysis module executable on the processor, wherein, when executed, the analysis module causes the processor to at least:
receive the measured centerline length from the first sensor unit;
receive the measured shoulder length from the second sensor unit;
receive the measured pressure, the measured temperature, and the identification information from at least one of the first sensor unit and the second sensor unit;
receive the tire construction data from the tire construction database;
apply the measured centerline length, the measured shoulder length, the measured pressure, the measured temperature, the identification information, and the tire construction data as inputs to a prediction model configured to analyze the inputs to generate an output comprising an estimated wear state for the tire; and
transmit the estimated wear state for the tire to at least one vehicle system of the one or more vehicle systems for operation.