A system for predicting tire lift-off propensity of a vehicle tire includes a vehicle tire-affixed tire-identification device for providing a tire-specific identification, multiple tire-affixed sensors mounted to the tire measuring tire-specific parameters and generating tire-specific parameter information, one or more vehicle-affixed sensor(s) mounted to the vehicle to measure vehicle speed and a lift-off propensity estimator generating a lift-off propensity for the vehicle tire from a database containing experimentally-derived, tire-ID specific, lift-off propensities correlated with measured tire-specific parameter information and vehicle speeds.

A tire pressure monitoring apparatus includes a frequency detection unit configured to detect a resonant frequency according to a tire pressure; a calculation unit configured to accumulate the resonant frequency and calculate an average frequency and a frequency variance; a coordinate system setting unit configured to locate a first average variance point corresponding to the average frequency and the frequency variance, on an average-variance plane, and locate second average variance points corresponding to average frequencies and frequency variances of resonant frequencies measured for types of tires, on the average-variance plane; a tire determination unit configured to determine a type of a tire in consideration of distances between the first and second average variance points; and a low-pressure frequency setting unit configured to set a low-pressure frequency according to the determined type of the tire, as a reference low-pressure frequency for determining whether the tire pressure is a low pressure.

A system includes a wheel, a hubcap coupled to the wheel and a tire pressure sensor coupled to the wheel. The system also includes a brake control unit (BCU) and an active hubcap circuit coupled to the hubcap. The active hubcap circuit is electrically coupled to the tire pressure sensor and the BCU and configured to receive an input signal from at least one of the tire pressure sensor or the BCU, generate an output signal by increasing a signal to noise ratio of the input signal and output the output signal to at least one of the BCU or the tire pressure sensor.

A system includes a wheel, a hubcap coupled to the wheel and a tire pressure sensor coupled to the wheel. The system also includes a brake control unit (BCU) and an active hubcap circuit coupled to the hubcap. The active hubcap circuit is electrically coupled to the tire pressure sensor and the BCU and configured to receive an input signal from at least one of the tire pressure sensor or the BCU, generate an output signal by increasing a signal to noise ratio of the input signal and output the output signal to at least one of the BCU or the tire pressure sensor.

An electrostatic capacitance detection device is provided, which is provided with a first electrode, an insulating layer on the first electrode, and a second electrode on the insulating layer, the electrostatic capacitance detection device being configured to calculate a shear force applied from above an upper portion of the second electrode.

A functional component to be attached inside a tire, for detecting a state of the tire as information, including: a first substrate having a first sensor that detects a state of the tire; a second substrate having a second sensor that detects a state of the tire different from the state of the tire detected by the first sensor; and a connection means that electrically connects the first substrate and the second substrate, in which the first substrate further includes a communication means that outputs the information detected by the first sensor and the second sensor to outside of the tire, and in which the first substrate and the second substrate are stacked in a tire radial direction, and the second substrate is disposed on an outer side in the tire radial direction.

A sensor is configured to infer a rotational speed of a tire of a vehicle. A frequency generator is configured to synthesize frequencies of a tire cavity resonance according to the rotational speed of the tire to generate a sense signal. An active noise control filter is configured to generate an antinoise signal from the sense signal. A loudspeaker configured to convert the antinoise signal into antinoise and to radiate the antinoise to a listening position. The antinoise signal is configured so that the antinoise reduces sound of the tire cavity resonance at the listening position.

A device for determining a rotational speed and a vibration of a wheel end of a vehicle, in particular a truck, is disclosed. The device includes a single sensor measuring a signal during a rotation of the wheel end. The sensor is arranged at the wheel end, and a determination unit for determining the rotational speed and the vibration of the wheel end using the signal of the single sensor is provided.

The present disclosure discusses a method of operating a vehicle having a set of tires and an active suspension system. The method includes operating the vehicle to travel along a road surface, sensing, using a smart tire assembly, a magnitude of one or more physical quantities associated with at least one tire of the set of tires, and controlling the active suspension system of the vehicle based at least in part on the magnitude of the sensed one or more physical quantities.

A functional component in which an electronic component capable of acquiring information inside a tire is housed and which is attachable to an inner peripheral surface of the tire, the functional component including a housing having a housing part for the electronic component and a bottom surface facing the inner peripheral surface of the tire, and a tubular part extending from a peripheral edge of the bottom surface toward the inner peripheral surface.