Embodiments included herein are directed towards a method for estimating tire load. Embodiments may include determining a tire pressure associated with a tire and determining a tire angular velocity associated with the tire. Embodiments may further include obtaining one or more tire stiffness coefficients and determining a tire radial deformation based upon, at least in part, a length of a tire ground contact patch or a contact patch angle.

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.

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.

A tire replacement forecasting system includes a tire supporting a vehicle. A sensor unit is mounted on the tire and includes a footprint centerline length measurement sensor and a pressure sensor. A processor is in electronic communication with the sensor unit and receives the measured centerline length and the measured pressure. An electronic vehicle network transmits selected vehicle parameters to the processor. A wear state predictor is stored on the processor and receives the measured centerline length, the measured pressure, and the selected vehicle parameters to generate an estimated wear state of the tire. A forecasting model is stored on the processor and receives multiple estimated wear states of the tire, and predicts future wear states of the tire. A forecast tire replacement date is generated by the forecasting model when the predicted future wear states of the tire are estimated to pass a predetermined wear threshold.

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.

A tire wear amount estimation system includes a step of acquiring a strain signal output from a strain sensor provided on the inner side surface or inside of the pneumatic tire, and a step of estimating the wear state of the tread portion of the pneumatic tire based on the strain signal output at the timing of kicking out from the road surface of the ground contact area of the tread portion corresponding to the strain sensor and a reference value of the strain signal.

A method for locating the position of each wheelset of a motor vehicle. Each wheelset including at least one wheel equipped with an electronic unit including at least one sensor to measure, for the wheel, the extent of the contact patch via which the tire is in contact with the ground, and a transmitter transmitting data regarding the extent of the tire contact patch to a control unit. The motor vehicle includes a load sensor for each of the wheelsets that measures and delivers to the control unit a value for the load supported by the associated wheelset. The method employing, on the one hand, data originating from a sensor able to determine the extent of the contact patch via which a tire is in contact with the ground and, on the other hand, a load sensor able to measure the load supported by a wheelset of the motor vehicle.

Tires including a bodies formed of one or more tire plies are disclosed. In various implementations, a tire may include several split-ring resonators (SRRs), each associated with a natural resonance frequency configured to shift in response to a change in an elastomeric property of a respective one or more tire plies. The elastomeric property may include one or more of a reversible deformation, stress, or strain. In some implementations, the one or more SRRs may include a first split-ring resonator (SRR) including first carbon particles that may uniquely resonate in response to an electromagnetic ping based at least in part on a concentration level of the first carbon particles within the first SRR and a second SRR including second carbon particles that may uniquely resonate in response to the electromagnetic ping based at least in part on a concentration level of the second carbon particles within the second SRR.

A disclosed vehicle component may include at least one split-ring resonator, which may be embedded within a material. The split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. The split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, the split-ring resonator may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.