An apparatus for monitoring deflection of a tyre including a non-transitory memory, storing tyre behavior information which relates tyre deflection to tyre load and tyre pressure; and a controller in communication with the memory. The controller is configured to: receive load information which relates to a load on the tyre; receive pressure information which relates to a pressure of the tyre; and determine a deflection of the tyre based on the received load information, the received pressure information, and the stored tyre behavior information.

The disclosure generally relates to wireless sensing nodes, energy harvesting, and energy charging. The disclosure also generally relates to reporting data gathered by the wireless sensing nodes to one or more network services.

A tire pressure monitoring system includes a tire valve stem mounted tire pressure gauge and an externally powerable remote display unit. The pressure gauge includes a pressure sensor, a wake circuit, a processor, and a first radio frequency (RF) module. The remote display unit includes a second RF module and a display. The wake circuit is adapted to activate the processor periodically at a predetermined interval of time and causes the processor to receive an output signal from the pressure sensor. The output of the pressure sensor is indicative of a tire pressure detected by the pressure sensor. The remote display unit is adapted to display the measured tire pressure value without any user input.

A self-adaptive method for assisting tire inflation enables control of tire inflation. If the vehicle stops, the central unit of a TPMS (Tire Pressure Monitoring System) can change in a self-adaptive manner from the reception configuration of the “moving” mode at a high bit rate to a “stationary” mode at a low bit rate. At the same time, if there is a variation in the pressure of a tire, the corresponding wheel unit is set for transmission in “stationary” mode at a low bit rate. The power Pa received at the central unit varies according to a curve (20) which shows, in the illustrated example, two positions of poor reception. By replacing high bit rate transmission with low bit rate transmission, the signal/noise ratio is improved and there is a gain in reception sensitivity of about 5 dB, and the risks of disturbance of the received power are virtually eliminated.

An apparatus configured to determine the pressure of an aircraft tire at a reference temperature. The apparatus includes a processing system configured to: obtain a measured tire pressure and a measured temperature associated with the measured tire pressure; and determine a tire pressure at the reference temperature by adjusting the measured tire pressure using a predetermined temperature characteristic, a square root of the measured temperature and a square root of the reference temperature. The predetermined temperature characteristic is a gradient of the relationship between square root of temperature and tire pressure.

Adapter, tyre parameter monitoring system and method for mounting a tyre parameter monitoring system onto a wheel rim In an embodiment, a tyre parameter monitoring system (2) is provided that comprises an electronic module (4) with a fitting (6) for a snap-in valve, a ball stud (8) coupled to the fitting (6) and a valve stem (10) for a clamp-in valve. The valve stem (10) has a ball socket (12) that is coupled to the ball stud (8) for form a ball joint such that the valve stem (10) is positionable at different angles to the electronic module (4).

A patch-type passive acoustic waving sensing device includes a surface acoustic wave sensor and at least a first and second rubber sheets. A cross-section of each of the first and second rubber sheets is larger than that of the surface acoustic wave sensor. A bottom of the surface acoustic wave sensor is on an upper surface of the first rubber sheet, and a first central hole allowing the surface acoustic wave sensor to penetrate therethrough is formed in a center of the second rubber sheet. The surface acoustic wave sensor penetrates the first central hole, and the second rubber sheet is fixedly connected to the upper surface of the first rubber sheet. The surface acoustic wave sensor includes pins at the bottom thereof such that free ends of the pins are connected to an antenna, and the antenna and some of the pins are inside the first rubber sheet.

A tire condition telemetrics system. The system includes a vehicle having an onboard computer and one or more wheel assemblies with one or more tires with a tire tread. A prediction as to when said tire tread will fall below a minimum tread depth in performed. The prediction is based on an amount of distance said wheel assemblies experience said wheel slip condition, a distance said wheel assemblies drive over said one or more road materials, a distance said wheel assemblies drive in rain and snow, a distance one or more loads are on said vehicle, an amount of braking force applied by one or more braking systems to said wheel assemblies and a speed of said vehicle when said braking force is applied.

Valves for inflating tires of tired wheels, in particular tires for vehicles, wherein the term “vehicles” refers to motor vehicles, vans, trucks, motorcycles or in general elements of locomotion on tires. More in detail, a metal valve (1) of the clamp-in type for inflating tires (2) associable with a TPMS transducer (3) by a locking screw (4) and arranged to be mounted, by a fixing system including a nut (5) adapted to screw onto a thread (18) provided on the stem (8) of the valve (1), on a rim (6) of a wheel, wherein the fixing system includes an element (7) that irreversibly yields when a preset tightening torque is reached for the locking nut (5), and wherein the element (7) that irreversibly yields is associated with the stem (8) of the valve (1).

An apparatus and method for monitoring parameters of a tire using a piezoelectric device is provided. The piezoelectric device is mounted as part of a tire mountable apparatus with a circumferential orientation in a tire such that that the direction defined by length of the piezoelectric device is generally aligned with the direction of rotation of the tire. This can lead to increased coupling of the piezoelectric device to changing circumferential tire shape as the piezoelectric device enters and exits the contact patch of the tire while at the same time reducing the coupling of the piezoelectric device to changing lateral tire shape. Contact patch entry and exit times from piezoelectric signals generated by the piezoelectric device can be more readily identified, leading to increased accuracy of tire parameters determined from the contact patch entry and exit times, such as tire revolution count, tire speed, and contact patch angle.