Method and apparatus are disclosed for controlling a TPMS sensor of a vehicle tire. An example vehicle includes a communication module, a tire, and a TPMS sensor corresponding to the tire. The TPMS sensor is configured to receive a target pressure from the communication module, determine a modified target pressure based on vehicle data determined by a vehicle sensor, and, responsive to determining that a measured pressure differs from the modified target pressure by a threshold amount, transmit an alert to the communication module.

A method for transmitting data from a wheel unit arranged on a wheel of a vehicle to a central unit of the vehicle, involving: sending the data in the form of temporally spaced data transmissions from the wheel unit to the central unit, transmission times of the data transmissions being stipulated by the wheel unit according to a transmission algorithm; and receiving the data transmissions sent by the wheel unit via the central unit is disclosed. The method may further comprise: evaluating reception times at which each of the data transmissions are received by the central unit, according to an evaluation algorithm making allowance for the transmission algorithm; and rating the data transmissions on the basis of a result of the evaluation of the reception times. Further, a corresponding apparatus for data transmission in a vehicle is disclosed.

A pressure measuring device for a bicycle has a housing that includes a pressure chamber. The pressure chamber has a valve disposed in a first opening and a second opening into or out of a tire assembly volume of a tire assembly. A sense element is in pressure communication with the pressure chamber along a flow path between the first and second openings.

Method and apparatus are disclosed for controlling a TPMS sensor of a vehicle tire. An example vehicle includes a communication module, a tire, and a TPMS sensor corresponding to the tire. The TPMS sensor is configured to receive a target pressure from the communication module, determine a modified target pressure based on vehicle data determined by a vehicle sensor, and, responsive to determining that a measured pressure differs from the modified target pressure by a threshold amount, transmit an alert to the communication module.

Method and apparatus are disclosed for controlling a TPMS sensor of a vehicle tire. An example vehicle includes a communication module, a tire, and a TPMS sensor corresponding to the tire. The TPMS sensor is configured to receive a target pressure from the communication module, determine a modified target pressure based on vehicle data determined by a vehicle sensor, and, responsive to determining that a measured pressure differs from the modified target pressure by a threshold amount, transmit an alert to the communication module.

A tire pressure monitoring system monitors the pressure in at least one tire supporting a vehicle. The system includes at least one sensor mounted on the tire for measuring a pressure and a temperature of the tire. Transmission means transmit the measured pressure data and temperature data to a processor, and a tire pressure model is executed on the processor. The tire pressure model includes a driving event extractor to extract cold pressure data from the measured pressure data, and a temperature compensator to generate a compensated cold tire pressure from the cold pressure data. A noise filter filters sensor noise and generates a filtered cold tire pressure from the compensated cold tire pressure. A detection module receives the filtered cold tire pressure and determines an air pressure leak rate of the tire, and a leak notification corresponding to the air pressure leak rate is generated.

The tire pressure monitoring system repeatedly acquires the internal pressure value of the pneumatic tire and activates the timer when the internal pressure value falls below the warning threshold. The tire pressure monitoring system stops the output of the warning information associated with the warning threshold even if the internal pressure value falls below the warning threshold again until the timer expires. The tire pressure monitoring system newly activates the timer when the internal pressure value exceeds the warning threshold after falling below the warning threshold or the danger threshold in the period until the timer expires.

A tire auto-location system for a tire pressure monitor sensor and operating method thereof are provided. The tire auto-location system for a tire pressure monitor sensor includes a host, a plurality of axle rotation detection devices, and a plurality of tire pressure monitor sensors. By allowing the host to receive and compare the corresponding gear ring rotation data transmitted by the plurality of axle rotation detection devices and the corresponding tire rotation data transmitted by the plurality of tire pressure monitor sensors, the location of each tire pressure monitor sensor can be confirmed. At the same time, since the host and the tire pressure monitor sensor have two-way transmission functions, the host can react quickly and promptly command the tire pressure monitor sensor to stop sensing and transmitting after completing the calculation.

A tire pressure sensor device (122) for a wheel (112) of an aircraft (102) including a pressure sensor (124) for measuring the internal pressure of a tire, a temperature sensor (126) for measuring a temperature local to the tire (116), a memory unit (131) local to the tire for storing data, and a control unit (128) local to the tire arranged to record in the memory unit (131) data of the readings taken at intervals of time. The data recorded for each reading includes an indication of the time of the reading, the tire pressure and the temperature local to the tire. Measurements may be taken and recorded over time, both when the aircraft is on the ground and when the aircraft is in flight. Data may be uploaded to a portable handheld device (140) for analysis when maintaining the tires in their correctly inflated state.

A transmitting device for wireless transmission of measured parameters, which comprises a microcontroller controlling pulse generating means so that said pulse generating means generate at least one pulse position modulation (PPM) signal comprising information corresponding to at least one measured parameter value, wherein said pulse generating means comprise an oscillator and a power amplifier connected to said oscillator in order to amplify the pulses output from said oscillator and to output said PPM signal, and wherein said microcontroller is configured, for each pulse of said PPM signal to be generated, to activate only said oscillator for a first period of time and then to activate also said power amplifier only for a second period of time following said first period of time, said microcontroller being also configured to maintain deactivated said oscillator and said power amplifier outside the time interval defined by said first and second periods of time.