A tire deterioration inferring (estimating) method uses a tire deterioration inferring device placed on the inner surface of a tire. The method has: a deformation velocity measurement step of measuring a tire deformation velocity, which is the deformation velocity of the tire while the tire is rotating, and obtaining time-series changes in the tire deformation velocity; a calculation step of calculating peak values of the tire deformation velocity from the time-series changes in the tire deformation velocity; and an inference step of inferring the degree of the deterioration of the tire by using a first peak value, which is a peak value of the tire deformation velocity before and at the stepping of the tire or at and after the kicking of the tire, the first peak value being in the time-series changes in the tire deformation velocity.

A device valuates the deformation of a tire casing, the device including: a tire casing having a rotation axis, including a crown and having a radial stiffness; when said tire casing is included in a mounted assembly, the footprint of the tire casing has a dimension L.sub.adc in the axial direction; and an electronic device comprising one bending sensor, characterized in that the bending sensor includes an active part having a main dimension of between 10% and 80% of the dimension L.sub.adc, in that the active part of the sensor is located in line with the crown, in that the main dimension of the active part is oriented in the circumferential direction of the tire casing and in that the bending sensor has a bending stiffness that is lower than the radial stiffness of the tire casing.

A method, system and computer program product are provided for implementing tire tread depth and wear patterns monitoring. A radio frequency identification (RFID) tag is provided with an associated tire to be monitored. A dipole antenna structure is coupled to the RFID tag and routed within a position in the tire tread and routed substantially circumferentially in the associated tire. A resonant frequency of the dipole antenna structure is detected to monitor tire tread wear.

The invention relates to a device for evaluating the deformation of a tyre casing which includes: a tyre casing having a rotation axis, including a crown and having a radial stiffness; when said tyre casing is included in a mounted assembly, the footprint of the tyre casing has a dimension L.sub.adc in the axial direction; an electronic device comprising one bending sensor;
characterized in that the bending sensor includes an active part having a main dimension of between 10% and 80% of the dimension L.sub.adc, in that the active part of the sensor is located in line with the crown, in that the main dimension of the active part is oriented in the circumferential direction of the tyre casing and in that the bending sensor has a bending stiffness that is lower than the radial stiffness of the tyre casing.

In order to provide a method and a device for determining a tire type of a running tire from a vehicle side, when determining the tire type, which is the type of the tire, from an output of an acceleration sensor attached to an inner surface side of a tire tread of the tire mounted on a vehicle, a feature vector is extracted from an acceleration waveform detected from the output of the acceleration sensor, and the tire type of the tire is determined, by a machine learning algorithm, from the extracted feature vector. The tire type is determined on the basis of the extracted feature vector and a determination model in which a feature vector obtained in advance for each tire type has been configured as learning data.

A control unit of a tire-mounted sensor determines whether a tire has been exchanged. When the tire has been exchanged, the control unit changes the threshold value of a road surface state determination condition used for detecting the road surface state from vibration data of the tire detected by an acceleration sensor of the tire-mounted sensor. For example, the threshold value of the road surface state determination condition is reset upon determining that the tire has been exchanged, by transmitting an instruction to the tire-mounted sensor through a tool at an automobile maintenance shop, etc.

A condition in which an abnormality can occur in a tire is accurately detected on the basis of a detection signal from an acceleration sensor used to detect a road surface state and a possibility that an abnormality has occurred in the tire is also detected. In addition, the detection result is stored as a diagnosis history. The diagnosis history or the possibility that an abnormality has occurred in the tire are notified through a notification device in a vehicle body side system so that a user is informed in advance of the possibility that an abnormality has occurred in the tire. In addition, when the diagnosis history is checked through a tool in a car repair shop, etc., the diagnosis history stored in a tire-mounted sensor is read out. Accordingly, the possibility of abnormality of the tire can be informed also in the car repair shop, etc.

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.

This disclosure provides a tire formed of a body having multiple plies and a tread that surrounds the body. The plies and/or the treads and/or other surfaces of the tire include one or more resonators that respond to being interrogated by an externally generated excitation signal. Multiple resonators formed of electrically-conducting materials are disposed (e.g., printed) on the plies and/or tread and/or other surfaces of the tire. Each of a group of multiple resonators can be individually configured to respond to different frequencies of the excitation signal such that the presence of a response (e.g., a measured attenuation of the excitation signal return) or lack of response (e.g., based on comparison of the excitation signal return to calibration curves) from individual ones of the multiple resonators can be combined to form a serial number that is unique to the tire or other elastomer-containing component (e.g., belts, hoses, etc.) being interrogated.

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.