A monitoring system, having a processor, provides pressure warnings associated with a tire of an aircraft When the aircraft is stationary, the processor operates in a maintenance mode and receives a first pressure measurement indicating a pressure of the tire; compares the first pressure measurement with a maintenance mode low pressure threshold, and causes the flight deck display to display a low pressure warning associated if the first pressure measurement is below the maintenance mode low pressure threshold. When the aircraft is in motion, the processor operates in a flight mode and receives a second pressure measurement indicating a pressure of the tire, compares the second pressure measurement with an abnormal pressure threshold which is lower than the maintenance mode low pressure threshold, and causes the flight deck display to display an abnormal pressure warning if the second pressure measurement is below the abnormal pressure threshold.

A pressure sensing circuit for use with a wireless sensor that includes an antenna and a pressure sensing element. The antenna includes a first pole and a second pole and is operable to transceive radio frequency signals between the wireless sensor and a wireless data collecting device. The pressure sensing element includes an electrical circuit and a diaphragm. When pressure is applied to the diaphragm, a characteristic of the electrical circuit changes. The changing of the characteristic of the electrical circuit causes one or more RF characteristics of the wireless sensor to change, which is interpretable to determine a pressure being applied to the pressure sensing element.

The invention relates to a method of utilizing a system for monitoring the temperature and/or the pressure of the tires of a vehicle (C) comprising one or more rolling sub-assemblies (100, 200), noteworthy in that it consists in installing on each rolling sub-assembly (100, 200), an additional storage and communication module (300) comprising: a data storage means in which are recorded, during a learning phase, the set of unique identifiers and the locations of each measurement and communication pick-up module (300) of said rolling sub-assembly (100, 200), a means of communication at least with the reception and transmission modules (400) and installed on the rolling sub-assembly, a means of storing energy for the purposes of powering the communication means, so that said storage and communication module (300) can retain in memory the set of identifiers and associated locations of the same sub-assembly (100, 200) and can communicate it instantaneously. The invention also relates to the device allowing the method to be implemented. Applications: utilization of a system for monitoring tires.

An auto-location method for sensors in or on vehicles, in particular TPMS sensors. The method includes: establishing a bidirectional communication between a central unit and at least one sensor; ascertaining trigger data for the auto-location of the at least one sensor on the basis of vehicle state data which are provided to the central unit by at least one other vehicle unit; transmitting the trigger data to the at least one sensor; initiating the auto-location by means of the central unit on the basis of the trigger data, wherein the sensor ascertains sensor data for the auto-location; and ascertaining the position of the at least one sensor on the basis of the ascertained sensor data.

A computer-implemented method of aircraft tire maintenance is disclosed including the steps of receiving data of a plurality of pressure and temperature measurements, each of the plurality of pressure and temperature measurements having an associated time stamp; determining stable points in the plurality of pressure and temperature measurements; and using the stable points for determining tire maintenance. A computer readable medium with instructions to implement the method and a processing system to implement the method are also disclosed.

A tire pressure monitoring unit is for mounting on a vehicle wheel, having a sensor for measuring the tire pressure, a transmitter and a receiver for wireless data transmission, a memory for storing tire data, and a controller connected to the sensor, the transmitter, the receiver and the memory. The controller writes this tire data into the memory on receipt of tire data received via the receiver and assigns a value to a variable, the value marking this tire data as valid. It is provided that a necessary condition for the variable to be assigned a value which marks the tire data as invalid is that the controller detects a pressure increase that exceeds a predetermined threshold value. In addition, a corresponding method for managing tire data in a data memory of a tire pressure monitoring unit is described.

A tire inflation pressure management apparatus includes an information acquisition unit, an alert generation unit, and an alert output unit. The information acquisition unit acquires information on a tire inflation pressure measured by a sensor provided in a tire. The alert generation unit generates alert information when the tire inflation pressure acquired by the information acquisition unit is below a first threshold value smaller than an appropriate value of the tire inflation pressure. The alert output unit gives a notification outside after an elapse of a predetermined period to indicate that the alert information is generated by the alert generation unit during the predetermined period.

A road classification system for determining a road surface condition includes a model having as an input changes in the measured axle vertical acceleration of the vehicle. The model further uses a sensor-measured tire inflation pressure and a tire construction type ascertained from a tire-based identification tag.

A wireless sensor includes an antenna, a tuning circuit, a pressure sensing circuit, a processing module, and a transmitter. Collectively, the pressure sensing circuit, the antenna, and the tuning circuit have one or more radio frequency (RF) characteristics and the pressure sensing circuit causes the RF characteristic(s) to vary with varying sensed pressures. The processing module detects a variance of the RF characteristic(s) from a desired value. In response to the detecting of the variance, the processing module adjusts the tuning circuit to substantially re-establish the desired value of the RF characteristic(s). The processing module generates a message regarding the adjusting of the tuning circuit, wherein a level of the adjusting is representative of a variance of pressure sensed by the pressure sensing circuit. The transmitter transmits the message.

A method for controlling a tire pressure monitoring system (TPMS) in a vehicle includes: measuring an air pressure of each tire included in the vehicle; and determining whether the air pressure of at least one tire is lower than a warning threshold level. When the at least one tire has a lower pressure than the warning threshold level, a warning sign is provided regarding a tire having a hysteresis air pressure which is ranged between the warning threshold level and a normal pressure level.