In one aspect, a tire monitoring apparatus having a circuit board, battery, and valve body intermediate the circuit board and the battery. The valve body has an attachment end portion for connecting to a valve stem of a tire, a filling end portion, and an internal passageway to permit air to travel from the filling end portion to the attachment end portion. The circuit board has a sensor configured to detect a variable of air traveling in the internal passageway of the valve body and communication circuitry of the circuit board operable to wirelessly communicate data associated with the variable of the air. The tire monitoring apparatus further includes a support permanently encapsulating the circuit board and battery about the valve body. The support includes a structural member molded onto the valve body and an embedding member securing the circuit board and the battery to the structural member.

A tire pressure monitoring system (TPMS) includes a plurality of beacon transmitters each provided at different locations and each configured to transmit a plurality of beacons; a first TPMS sensor module configured to receive the plurality of beacons from each of the plurality of beacon transmitters, measure a signal strength of each of the plurality of beacons from each of the plurality of beacon transmitters, and transmit a signal including a first signal strength value for each of the plurality of beacon transmitters, each first signal strength value being representative of the measured signal strength of one or more of the plurality of beacons from a corresponding beacon transmitter of the plurality of beacon transmitters; and a control unit configured to receive the signal and determine a location of the first TPMS sensor module based on the first signal strength value for each of the plurality of beacon transmitters.

A pressure test method, device, and system of using the same are described herein. One method includes an inflatable with an internally mounted pressure sensor assembly, measuring pressure values, associating the sensor to an identification reader to receive the pressure values from the pressure sensor, and notifying a user of the measured pressure.

A tire pressure monitoring system (TPMS) includes a plurality of beacon transmitters each provided at different locations and each configured to transmit a plurality of beacons; a first TPMS sensor module configured to receive the plurality of beacons from each of the plurality of beacon transmitters, measure a signal strength of each of the plurality of beacons from each of the plurality of beacon transmitters, and transmit a signal including a first signal strength value for each of the plurality of beacon transmitters, each first signal strength value being representative of the measured signal strength of one or more of the plurality of beacons from a corresponding beacon transmitter of the plurality of beacon transmitters; and a control unit configured to receive the signal and determine a location of the first TPMS sensor module based on the first signal strength value for each of the plurality of beacon transmitters.

A device for detecting tire parameters of transiting vehicles, comprising an electronic unit for processing radio signals that carry measurements of at least one parameter of at least one tire of a vehicle, such as the pressure, and further comprising a detector of the transit of vehicles for the activation of the processing of the radio signals.

A method for determining a wheel load acting on a vehicle wheel having a rim, a tire mounted on the rim and a sensor unit mounted at the wheel, includes determining a tire pressure of the tire using the sensor unit, determining a tire footprint of the tire using the sensor unit when the vehicle is driving, determining the wheel load based on a predetermined relationship between the wheel load, the tire pressure and the tire footprint, analyzing temporal variations of the tire pressure during a standstill of the vehicle for determining one or more parameters indicating temporal variations of the tire pressure. A change of the wheel load during the standstill is estimated based on the determined parameters. A device for determining a wheel load and a method and a device for determining a weight of a vehicle are also provided.

Embodiments provide a fail-safe device, a tire pressure measurement system, a vehicle, a tire, a method and a computer program for monitoring a first sensor of a tire pressure monitoring system. The fail-safe device includes a first input for a first signal from the first sensor. The first signal indicates a first physical quantity. The fail-safe device includes a second input for a second signal from a second sensor. The second signal indicates a second physical quantity. The fail-safe device further includes a control module to verify the first signal based on the second signal and a physical relation between the first and the second physical quantities.

An integrated tire sensor and reader system includes at least one sensor unit mounted a tire or a wheel. A reader is disposed remotely from the sensor unit. The sensor unit includes at least one sensor for measuring a parameter of the tire or wheel and an antenna for communicating with the reader. The sensor unit is configured to receive a radio frequency power signal from the reader and to transmit data to the receiver. The reader includes an antenna for transmitting the radio frequency power signal to the sensor unit to actuate the one sensor unit. Upon actuation of the sensor unit, the sensor measures the parameter of the tire or wheel, and data from the sensor is transmitted from the sensor unit to the reader.

A sensor transceiver is kept in a state capable of receiving LF waves. Upon receiving LF waves indicating a start command from the vehicle-body system, the sensor transceiver is caused to be in a state capable of receiving RF waves accordingly. Upon receiving an instruction command from the vehicle-body system under the state capable of receiving RF waves, the sensor transceiver notifies the vehicle-body system of data on tire pressure.

An apparatus for measuring the pressure of a two-wheeler tire comprises: an adapter component which comprises a joining mechanism to connect the apparatus to a valve of the two-wheeler tire; a valve opener to open the valve so that in a state connected to the valve pressurized air flows from the two-wheeler tire through the valve into the until the which can be connected to the adapter component; and a sensor component which can be connected to the adapter component. The sensor component comprises a pressure measurement device to measure the pressure in the apparatus and a transmitter to wirelessly transmit information corresponding to the measured pressure.