Method and system for determining a route for a vehicle. The method associates a navigation module to a vehicle fitted with tires and a tire monitoring unit to at least one tire fitted to the vehicle. The monitoring unit has a sensing element to generate a sensing signal descriptive of deformations undergone by the tire. The deformations form a contact area between the tire and a rolling surface on which the tire rotates. During rotation of the tire, the sensing signal, including the sensing signal generated in correspondence of passages of the sensing element through the contact area, is undersampled for a number of passages sufficient to obtain an estimated length of the contact area. The weight of the vehicle is then estimated based on such estimated length, and at least one route among two or more routes is selected, based on such estimated weight of the vehicle.

The present invention relates to a system and method for measuring the length of a footprint of a tyre (10).

The system comprises a first electronic device (1) and a second electronic device (2), each of which is configured at least to acquire, filter, store and sent data, and a processing unit (3), external to said electronic devices (1, 2), configured at least to receive and process the data sent by each electronic device (1, 2), to measure the length of a footprint on the basis of an angle (β) arranged between a first axis (B1) passing through the centre (O) of the tyre (10) and a first contact point (CP1) between a portion of said tyre (10) and the ground and a second axis (B2) passing through the centre of the tyre (10) and a second contact point (CP2) between said portion of said tyre (10) and the ground.

An apparatus for estimating a tire resonance frequency may include a sensor for detecting rotation of a tone wheel; and a signal processor for calculating the detected rotation to produce a corrected wheel speed, filtering the corrected wheel speed in a predetermined manner to produce a filtered wheel speed from which engine noise is removed, and estimating a resonance frequency of a tire using the filtered wheel speed.

The present invention is related, but is not restricted, to the field of the study or analysis of materials by determining the chemical or physical properties thereof, in particular the field of the investigation or analysis of materials by using electromagnetic waves, specifically providing a method from measuring internal stress in tires, using a ferromagnetic material.

The invention provides a method for measuring internal stress in a tire, characterized in that it comprises: incorporating into the tire a material that is a combination of a rubber matrix and a plurality of microwires made of a ferromagnetic material; irradiating said tire with electromagnetic waves by means of a transmitting antenna; receiving an electromagnetic wave absorption response from said tire by means of a receiving antenna; and determining the internal stress of the tire by means of a processor operatively connected to said receiving antenna, on the basis of the electromagnetic wave absorption response. The invention further provides a material for measuring the internal stress in a tire, characterized in that it is a combination of a rubber matrix and a plurality of microwires made of a ferromagnetic material.

The present invention is related, but is not restricted, to the field of the study or analysis of materials by determining the chemical or physical properties thereof, in particular the field of the investigation or analysis of materials by using electromagnetic waves, specifically providing a method from measuring internal stress in tires, using a ferromagnetic material.

The invention provides a method for measuring internal stress in a tire, characterized in that it comprises: incorporating into the tire a material that is a combination of a rubber matrix and a plurality of microwires made of a ferromagnetic material; irradiating said tire with electromagnetic waves by means of a transmitting antenna; receiving an electromagnetic wave absorption response from said tire by means of a receiving antenna; and determining the internal stress of the tire by means of a processor operatively connected to said receiving antenna, on the basis of the electromagnetic wave absorption response. The invention further provides a material for measuring the internal stress in a tire, characterized in that it is a combination of a rubber matrix and a plurality of microwires made of a ferromagnetic material.

Methods and apparatus forming part of a vehicle sensor system (100) comprising a plurality of sensor units (104a-f) and a controller (102). A sensor unit comprises: a motion sensor (417) configured to determine a first speed of the sensor unit; and a transmitter (402) configured to transmit first identification data to the controller if the first speed of the sensor unit exceeds a first threshold. The motion sensor is further configured to determine a second speed of the sensor unit a period of time after determination of the first speed of the sensor unit, and the transmitter is configured to transmit to the controller second identification data if the second speed of the sensor unit exceeds a second threshold. The controller comprises: a receiver (304) configured to receive the first identification data, and further configured to receive the second identification data a period of time later; and a sensor unit assigner (320) configured to assign the sensor unit to the controller if the first identification data and the second identification data are received.

Proposed is a tire abnormality detection device and a detection method thereof, and more particularly, is a tire abnormality detection device and a detection method thereof capable of lowering a possibility of accident by determining an abnormal state of a tire. The device includes an MCU module that is located at a center of a surface of a tire inner liner, a first sensor module that is formed on one side of the MCU module in a width direction of the inner liner, and a second sensor module that is formed on the other side of the MCU module in the width direction of the inner liner, in which the first sensor module and the second sensor module are symmetrically located with respect to the MCU module.

The invention concerns a system and a method for detecting potential damages to tires of motor vehicles due to impacts against/on obstacles.

A system for determining a tire change status in a vehicle is provided. The system includes at least one processing device and a storage device. The at least one processing device may be arranged to: calculate a value of at least one reference parameter which may be used in indirect tire pressure monitoring; store the calculated value of said at least one reference parameter in the storage device; retrieve a previously stored value of said at least one reference parameter from the storage device; determine a similarity parameter based on a similarity between the calculated value and the previously stored value of said at least one reference parameter; and determine a tire change status, indicating whether or not the tires have been re-filled or replaced, by comparing said similarity parameter with a threshold.

A system for determining a tire change status in a vehicle is provided. The system includes at least one processing device and a storage device. The at least one processing device may be arranged to: calculate a value of at least one reference parameter which may be used in indirect tire pressure monitoring; store the calculated value of said at least one reference parameter in the storage device; retrieve a previously stored value of said at least one reference parameter from the storage device; determine a similarity parameter based on a similarity between the calculated value and the previously stored value of said at least one reference parameter; and determine a tire change status, indicating whether or not the tires have been re-filled or replaced, by comparing said similarity parameter with a threshold.