Abstract:
The invention provides a method and system for automatically detecting a swap of tires on a vehicle using RSSI levels obtained from tires equipped with transmitters. The obtained RSSI level distributions are used to artificially generate a set of training records, allowing for robust training of a machine learning algorithm. The machine learning algorithm is thereby enabled to provide efficient detection of tire swaps, and to generate a corresponding output signal.
Abstract:
A tire sensor attachment structure is provided. The tire includes a pair of bead areas, a sidewall extending from each respective bead area to a tread, a carcass extending toroidally between each of the bead areas, and an innerliner that is disposed radially inwardly of the carcass. A sensor housing is attached to the innerliner, and defines an interior chamber. A sensor is disposed in the chamber. The tire sensor attachment structure includes a compressible body that is disposed in the chamber between the sensor and the innerliner.
Abstract:
A sensor retaining system for a vehicle tire is provided. The tire includes a pair of sidewalls extending from a respective bead area to a tread, which is formed with a plurality of tread elements. A sensor unit is mounted to the tire and includes a pair of electrical contacts. A tread wear sensor extends into one of the tread elements and includes a wire. The wire includes proximal ends, each one of which contacts a sensor unit electrical contact to create an electrical circuit. A flexible container is mounted to an innerliner of the tire. A cup includes a base and a sidewall that cooperate to form a cavity, and a bottom of the tread wear sensor and the sensor unit are received in the cavity. The cup maintains a connection between the electrical contacts and the wire proximal ends, and is disposed in the flexible container.
Abstract:
A tire tracking system and method for tracking travel mileage experienced by a vehicle tire includes a tire-affixed identification transponder operative to generate tire-specific identification data; a vehicle-based incremental vehicle travel distance estimator for generating a synchronous stream of incremental vehicle travel distance estimations; and a timestamp synchronization and distance traveled estimator operative to generate a continuous synchronous stream of incremental tire travel distance estimations from the incremental vehicle travel distance estimations. A mobile network uploads the incremental tire travel distance estimations and the tire-specific identification data to a remote server that generates an aggregate of the tire travel distance estimations in a form accessible by the tire-specific identification data.
Abstract:
Disclosed are various embodiments for sensing wear of a tire tread. A tire comprises an innerliner, a plurality of belts layered adjacent to the innerliner, a tread adjacent to the plurality of belts opposite the innerliner and a treadwear sensor positioned in the innerliner. The treadwear sensor comprises a base plate on an interior side of the innerliner and a tube extending from the base plate through the innerliner and the plurality of belts to a first wear depth in the tread. When the tread is worn to the first wear depth, an end of the tube is exposed through the tire.
Abstract:
A tire includes a pair of sidewalls extending from a respective bead area to a tread. The tread is formed with a plurality of tread elements and a radially outer surface. A sensor unit is mounted to the tire and includes a pair of electrical contacts. The tread wear sensor plug includes a cylindrical projection extending through an opening formed in one of the tread elements, a flange, and a wire including proximal ends disposed in the flange and a distal end near a radially outer surface of the projection. An electrical circuit is formed by each proximal end of the wire electrically contacting a respective one of the sensor unit electrical contacts. When the tread element and the cylindrical projection wear down to the distal end of the wire, the wire and the circuit break. A notice is transmitted by the sensor unit when the circuit breaks.
Abstract:
A standalone tire identification tag and standalone sensor module are mounted to a tire and configured to share and store tire identification and tire parameter-measuring sensor data through a common data sharing interface.
Abstract:
A dynamic load estimation system is provided including: a vehicle load bearing tire; at least one tire sensor mounted to the tire, the sensor operable to measure a tire deformation of the one tire and generate a raw load-indicating signal conveying measured deformation data; road roughness estimation means for determining a road roughness estimation; filtering means for filtering the measured deformation data by the road roughness estimation; and load estimation means for estimating an estimated load on the one tire from filtered measured deformation data. A road profile estimate is fused with the static load estimate in order to obtain an instantaneous tire load estimate
Abstract:
A tire includes a pair of sidewalls extending from a respective bead area to a tread. The tread is formed with a plurality of tread elements and a radially outer surface, and a chamber is formed in one of the tread elements. A sensor unit is mounted to the tire and includes a pair of electrical contacts. The polymer plug includes a wire disposed in the chamber. The wire includes proximal ends and a distal end near a radially outer surface of the tread. A liquid polymer is injected into the chamber and cured. An electrical circuit is formed by each proximal end of the wire electrically contacts a respective one of the sensor unit electrical contacts. When the tread element wears down to the distal end of the wire, the wire and the circuit break. A notice is transmitted by the sensor unit when the circuit breaks.