A radio frequency identification (RFID) tag includes an antenna, an analog front end, a processing circuit, and memory. The analog front end includes a power circuit, a tuning circuit, a transmitter, and a receiver. The power circuit is operably coupled to convert a radio frequency (RF) signal into a power supply voltage. The tuning circuit, when enabled, adjusts an RF characteristic of the analog front end to tune power harvesting from the RF signal. The transmitter is operably coupled to transmit a response signal to the RFID reader via the antenna. The receiver is operably coupled to receive a command signal from the RFID reader, wherein the command signal is contained within a portion of the RF signal. The processing circuit is operable to interpret the command signal and generate the response signal.

A system for estimating a tire load of a tire includes a pressure sensor configured to generate a tire pressure signal; an acceleration sensor configured to generate a tire acceleration signal; a temperature sensor configured to generate a tire temperature signal; and at least one processor configured to calculate a duration of a contact patch based on the tire acceleration signal, calculate a vehicle speed based on the tire acceleration signal, determine at least one system model coefficient based on the tire pressure signal and the tire temperature signal, and calculate the tire load of the tire using a linear system model that relates tire pressure, the duration of the contact patch, and the vehicle speed to the tire load of the tire, where the linear system model further includes the at least one system model coefficient for calculating the tire load of the tire.

Method for managing the energy in a system for verifying the inflation pressure of the tires of an aircraft, consisting in measuring, by a pressure sensor, at least one inflation pressure of each of the tires, obtaining a unique identification data relating to each of the tires, and sending via the wireless communication link the measurements and data thus collected to a processing unit disposed in or out of the aircraft for them to be available to a pilot or a maintenance operator, the step of sending the measurements and data being carried out in an acyclic manner as a function of a trigger signal given by a motion detector that detects the motion of the wheels of the aircraft as long as the speed is lower than a predetermined maximum speed.

A sensing system for a vehicle includes wheel end sensors (WES), each WES proximate to at least one predetermined tire and configured to sense angular data, including at least one of angular position, angular velocity, angular acceleration, and/or angular displacement. The system includes a plurality of tire pressure monitoring (TPM) sensors, each TPM sensor inside one of the tires and configured to sense pressure, temperature, and angular data within said tire. The sensing system is configured to compare the angular data sensed by each WES to the angular data sensed by each TPM sensor to automatically identify, for each TPM sensor, a corresponding WES, and based on the position on the vehicle of the predetermined tire of the corresponding WES, identify the position on the vehicle corresponding to said TPM sensor.

An electronic wheel unit for detecting a tire pressure of a tire of a vehicle wheel, for storing tire information of the tire and for sending tire pressure information and tire information. The wheel unit is configured to allow the alteration of stored tire information in a first mode of operation and to prevent the alteration of stored tire information in a second mode of operation. To improve the integrity and safety of the stored tire information in this case, the wheel unit is further configured to change from the first mode of operation to the second mode of operation when a first mode change criterion is satisfied. The satisfaction of the first mode change criterion is dependent at least on an operating parameter of the vehicle wheel that is representative of a rotational movement of the vehicle wheel.

Described herein are various systems and processes for predictive operating assistance of vehicles. The systems and techniques described herein may be applicable to vehicles such as vehicles operated by a driver, semi-autonomous vehicles, and/or autonomous vehicles. The assistance techniques described herein may be predictive. That is, the techniques allow for the prediction of non-optimal or dangerous operating conditions before the vehicle control is compromised. Accordingly, a warning may be provided and/or operation of the vehicle may be changed based on the predictive assistance determinations. In certain embodiments, the techniques described herein may provide warnings to a driver, may detect faults within the vehicle, may aid in route planning, may detect obstacles proximate to the vehicle, and/or may aid in the operation of the vehicle.

A method for determining an item of fastening information of a wheel of a motor vehicle, wherein rotational movements of the wheel are detected by at least one sensor. The sensor provides a wheel speed signal to an electronic control unit, which determines the fastening information from the wheel speed signal. A first time-frequency transformation of the wheel speed signal is carried out, whereby a first transformation signal is generated, after which a second time-frequency transformation of the first transformation signal is carried out. A second transformation signal is generated, in particular after which a first fastening parameter is obtained from the second transformation signal, after which the fastening information is calculated/determined as a function of the second transformation signal and/or the first fastening parameter.

A rim for wheel is described including a measuring system for detecting the vertical load applied to the wheel. The measuring system includes a sensor adapted to detect a deformation of the rim and to transmit a deformation signal to a processing unit. The processing unit receives an output signal of the sensor related to the deformation of the rim detected, and determines the vertical load applied to the wheel.

A tire pressure monitoring device can include: a magnetic sensor configured to measure a first magnetic field intensity in a first direction, and to measure second magnetic field intensity in a second direction; and a controller configured to control a state of the tire pressure monitoring device based on a variation of the first magnetic field intensity and a variation of the second magnetic field intensity.

Methods and apparatus for fitting to a wheel of a vehicle comprising a pneumatic tyre, the sensor module comprising: a pressure sensor for sensing pressure of a gas retained within the pneumatic tyre; an alert generator configured to generate one or more alert signals based on the sensed pressure of the gas and a calibrated tyre pressure; and a controller configured to receive pressure data from the pressure sensor and determine whether the tyre is being inflated or deflated by a user, and subsequently re-set the calibrated tyre pressure to the pressure of the gas after inflation or deflation.