An aspect of the invention relates to a method for the radio-oriented optimization of wheel monitoring in a vehicle equipped with vehicle wheels, wherein the monitoring of at least one of the vehicle wheels is prompted by an electronic wheel unit arranged on the relevant vehicle wheel capturing at least one wheel operating parameter of the vehicle wheel, and radio signals containing information about the at least one captured wheel operating parameter being transmitted for a respective wheel rotational position of the vehicle wheel, stipulated by the electronic wheel unit, wherein the radio signals are received and evaluated by a control device of the vehicle and wherein the radio-oriented optimization of the wheel monitoring is prompted by the electronic wheel unit being used to transmit multiple radio signals for different wheel rotational positions, wherein the radio signals are received by means of the control device and rated in respect of their respective radio signal strength, wherein the control device is used to transmit an optimization radio signal to the electronic wheel unit, wherein the optimization radio signal contains optimization information formed on the basis of the rating of the radio signals, and wherein the electronic wheel unit is used to receive the optimization radio signal, and the optimization information contained therein is taken into consideration for the stipulation of the wheel rotational position of the vehicle wheel for radio signals that are to be transmitted subsequently.

A method for assigning identifiers of wheel electronics to the positions of the wheels on the vehicle is disclosed. The wheel electronics send their individual identifier with information relating to the rotational direction of the wheel and to the occurrence of an impact on the wheel to a receiver. An evaluation unit: collects the identifiers and rotational direction information and the driving speed, and on this basis, differentiates between identifiers of wheel electronics on the left and right vehicle side; differentiates impacts reported from wheel electronics on the left vehicle side, from impacts reported from wheel electronics on the right vehicle side; measures the time between impact signals reported from wheel electronics on the left or on the right vehicle side; multiplies the measured time by the driving speed measuring during this time; and checks whether the length formed by the multiplication coincides with an axle distance.

A method for locating wheels of a motor vehicle. The vehicle including at least one central processing unit which includes a main ultra-wideband radio frequency transceiver and a plurality of wheel units, each including a secondary ultra-wideband radio frequency transceiver adapted for communicating with the main transceiver. The method includes at least one step of measuring the distance between the main transceiver and the secondary transceiver to be located, by analyzing the propagation time of an exchanged message, and a step of locating the wheel unit associated with the secondary transceiver to be located, on the basis of the distance measured in the measurement step.

A preliminary positioning method for a TPMS uses a receiver to receive a tire pressure signal, then obtains the ID code contained in the obtained tire pressure signal, then compares the ID code with the corresponding ID codes stored in the database, and defines the ID code as a known ID code, when the ID code is found to match with one of the corresponding ID codes prestored in the database. Repeating the above steps until the ID codes of all received tire pressure signals all have been compared. If the number of the known ID codes is equal to the number of the sensors, the known ID codes are designated as specific tires according to an indication of the respective tire pressure signals, so that the positioning function can be achieved in a short period of time.

The invention concerns a method for managing the load of a vehicle (C) of the type of that equipped with at least one module for transmitting data (110, 120, 130) through radiofrequency signals (F1, F2, F3) and one module for receiving (120, 220) data from the transmission module, said vehicle (C) and the different modules being disposed so that the load, once present, has an impact on the propagation of the radiofrequency signal, remarkable in that it comprises the following operation: detection of the variation of the spectral signature of the signal received (F2) by the receiving module (120, 220), in order to detect variations, in particular corresponding to the presence and/or absence of a load (600). The invention also concerns the device enabling said method to be implemented.

The invention provides a method and system for automatically detecting a swap of tires on a vehicle using RSSI levels obtained from tires equipped with transmitters. The obtained RSSI level distributions are used to artificially generate a set of training records, allowing for robust training of a machine learning algorithm. The machine learning algorithm is thereby enabled to provide efficient detection of tire swaps, and to generate a corresponding output signal.

A tire mounting state detection system (100) is provided with a vehicle configuration holding unit (230) holding a vehicle configuration including the number of wheels of a vehicle (10); a transmitter number detection unit (250) detecting the number of transmitters based on a radio signal received by a receiving unit; a state detection unit (260) detecting whether or not the number of transmitters exceeds or is short the number of wheels based on the number of wheels based on the vehicle configuration and the number of transmitters detected; and an output unit (270) outputting that the state of the transmitter is abnormal when it is determined that the number of transmitters exceeds or is short the number of wheels.

Method and apparatus are disclosed for localizing vehicle TPMS sensors. An example vehicle includes a plurality of TPMS sensors, an antenna, and a processor. The processor is configured for determining signal strength values between each of the plurality of TPMS sensors and the antenna, and based on the signal strength values, determining a location of each of the plurality of TPMS sensors.

A communication device mounting position determination system and apparatus are provided configured to limit where a device can be installed in a vehicle. An ECU transmits an LF signal from an LF antenna to sensor units. The sensor units receive and detect the signal strength. The sensor units transmit a UHF signal to the ECU having information including the signal strength of the LF signal. The ECU detects the signal strength of the UHF signals. For example, on the basis of the signal strength of the LF signal, the ECU makes a determination as to which of the wheels is the transmission source of the UHF signal, with respect to the left-right direction of the body of the vehicle. Further, on the basis of the signal strength of the UHF signal received by the ECU, the ECU makes the determination with respect to the front-rear direction of the vehicle.

An embodiment apparatus for determining a tire position includes a receiver configured to receive a signal from a tire pressure sensor, a processor configured to determine the tire position based on a tire internal temperature variation of a tire and a strength of the signal received from the tire pressure sensor, and a memory configured to store data and an algorithm executable by the processor.