Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissements Michelin

Trw Automotive U.S. LLC

Societe Detechnologie Michelin

Thierry Penot

Xavier Huchard

Christophe Villien

Franck Daumas

Marc Beranger

Franck Vial

Philippe Corniot

Franck Liberge

François Alcouffe

Bernard Perrier

Sébastien Dauve

Marie-José Villard

A method is provided for reading data relating to a tire, in which the data is stored in an electronic device integrated into the tire, and in which the tire is identified by a serial number and a manufacturing week number. A storage unit of the electronic device includes a data storage zone having a storage range formed of a number of bits. The storage range is also referred to as a restricted range, and the number of bits of the restricted range is less than or equal to 38. According to the method, the data stored in the restricted range is read, and the data read from the restricted range is decoded in order to determine the serial number and the manufacturing week number of the tire.

Method for reading data stored in an electronic device for a tyre

An electronic device with data stored therein is integrated into a tire. The data is stored in a memory of the electronic device. The memory includes a data storage zone with a field reserved for a serial number of the tire, which is stored in bit form. When the data stored in the field reserved for the serial number of the tire is read, at least a part of the read data is decoded into at least one letter so as to determine the serial number of the tire.

A self-contained device intended to be carried by a wheel-tire assembly in order to locate whether the assembly is positioned on the right side or on the left side of a vehicle is described. The device includes two magnetic sensors with axes of maximum sensitivity, the sensors providing two periodic signals that are phase shifted relative to one another. Each signal is representative of variations in the magnitude of the magnetic field detected by the sensor during a revolution of the wheel-tire assembly. The device also includes a processing unit programmed to determine, from the phase shift between the two periodic signals, a direction in which the wheel-tire assembly is rotating and to deduce, from this direction of rotation and from a direction of travel of the vehicle, whether the wheel-tire assembly is located on the right side or on the left side. The two magnetic sensors are intended to be positioned on the wheel-tire assembly at distinct azimuthal locations. A filtering element of the device is designed to eliminate components of the two periodic signals having frequencies that are below or equal to a given frequency.

Device for locating whether a wheel-tire assembly is positioned on the right or the left of a vehicle

A method of identifying a position of a wheel of a vehicle includes: providing, in at least one wheel of the vehicle, a device with at least one magnetic sensor with a maximum sensitivity axis; starting up the vehicle; measuring at terminals of each magnetic sensor a signal representative of magnetic flux time variations during rotation of the wheel; determining a characteristic quantity of the signal; comparing the characteristic quantity to a given threshold; and determining, according to a comparison result, a front or rear location of the wheel.

Method and device for identifying the position of a wheel of a vehicle

A location device is provided, in which the device is configured to be carried by a tire and wheel assembly so as to locate a right or left position of the assembly in a vehicle. The device includes two magnetic sensors with axes of maximum sensitivity; a measurement circuit for measuring a signal across terminals of each of the magnetic sensors, the measurement circuit being able to deliver two periodic signals phase-shifted with respect to one another and each periodic signal being representative of variations in values of a magnetic field detected by a corresponding magnetic sensor during a revolution of the tire and wheel assembly; and a calculation processor programmed to determine, based on the phase shift between the two periodic signals, a direction of rotation of the tire and wheel assembly, and to deduce from the direction of rotation and a direction of travel of the vehicle, a right or left location of the tire and wheel assembly. The two magnetic sensors have their axes of maximum sensitivity oriented in parallel, and in the two magnetic sensors are configured to be placed on the tire and wheel assembly at distinct azimuths.

Device for locating a right or left position of a tire and wheel assembly of a vehicle

The invention relates to a support for a component for monitoring a tire, of the type intended to be secured to a wheel and tire system and comprising a support for securing the component in which the support has a component retaining force which is an increasing function of the pressure of the medium surrounding the support.

Support for a tire monitoring component, support and monitoring component system, tire and wheel

In an electronic device for counting the number of rotations for a tire and wheel assembly, a storage means holds counting information (NbRot) intended to represent the number of rotations counted at each moment. The counting information (NbRot) represents the number of rotations counted from a predetermined time.

Growing community of inventors

Clermont-Ferrand, France

Thierry Penot