A method for locating the wheels of a vehicle equipped with an electronic module, according to which the transmission, by transmitting antennas mounted on the vehicle, of a predetermined number of identification request signals is commanded, and the values representative of the rates of reception of these signals by the electronic modules are analyzed. According to the method, centroid calculations are performed to determine, for each wheel position, the ideal position {right arrow over (LA.sub.j)} for reception of the transmitting antennas covering the wheel position (a reception rate of 100%), and, for each electronic module, the actual position of the latter {right arrow over (WU.sub.i)} relative to the position {right arrow over (TA.sub.i)} of the transmitting antennas fitted to the vehicle, using as the criterion for determining this actual position {right arrow over (WU.sub.i)} the rate of reception, by the electronic module, of the signals transmitted by each transmitting antenna.

A tire pressure monitoring system wake-up device is electrically connected to multiple tire pressure sensors and mutually transmits signals. The wake-up device includes an antenna unit, a main control board unit, a power supply unit, a radio frequency switch unit, and a database unit. After the antenna unit receives a signal which is then sent to the receiving module of the radio frequency switch unit. The receiving module processes and computes the received signal, it indirectly sends it to the database unit for comparison via the transmitting module. When the signal sent by the transmitting module matches the data range within the database unit, the main control board unit sends the comparison result back to the antenna unit. Upon receiving the returned signal, the antenna unit activates or does not activate each tire pressure sensor to detect and operate on each tire based on the content of the signal.

A vehicle control apparatus includes a plurality of tire pressure sensors respectively mounted on a plurality of wheels of a vehicle, a plurality of antennas each configured to transmit low frequency (LF) signals for triggering the plurality of tire pressure sensors to the tire pressure sensors present in an area where a transmit signal of the respective antenna reaches, a receiver configured to drive the antennas and receive radio frequency (RF) signals transmitted from the tire pressure sensors in response to receiving the LF signals, one or more processors, and a storage device storing a program to be executed by the one or more processors, the program including instructions to determine which wheel each tire pressure sensor is mounted on based on the RF signals received from the tire pressure sensors present in the area where the transmit signal of the respective antenna reaches.

A device, a system and a method for two-way communication between an electronic module from among a plurality of electronic modules and a remote control device. The method includes: transmitting, by the remote control device, which includes at least two switchable directional antennas having different transmission directions, a command through its at least two switchable directional antennas intended for the plurality of electronic modules; and identifying an electronic module from among the plurality of electronic modules that is identified as being opposite the remote control device, with the communication only being established between the remote control device and the electronic module from among the plurality of electronic modules that is identified as being opposite the remote control device.

Transport means (2) equipped with a movable assembly (1) comprises a first part (12) set in motion about an axis of rotation (102) by a second assembly (11), the movable assembly (1) being equipped with a radiofrequency transponder (100) and a reading system (3) comprising: a generator coupled to a demodulator (31) of electrical signals; and a cable (32) galvanically connected to the generator (31), fixed to the transport means (2) and comprising a radiating part (342). The projection P onto a plane of the first part (12) located between two contiguous axes of rotation (11a, 11b) and/or the projection R onto a cylinder (104), of axis of revolution (102), circumscribing the first part (12) in contact with the second assembly (11) of the radiating part, is less than 1 meter.

A sensor unit for detection of rapid pressure loss in a tire includes an integrated circuit, a microcontroller unit, an antenna transmitting a signal from the sensor unit, a power source to power the sensor unit, and a discrete analog component. The discrete analog component includes an analog pressure sensor to generate a signal of pressure indication, a differentiator receiving the signal of pressure indication and calculating a rate of pressure change, a level detector storing a threshold value of a rate of pressure change, and an interrupt request generated by the level detector when the calculated rate of pressure change exceeds the threshold value, indicating a rapid air loss event. The interrupt request is sent from the analog component through the integrated circuit to the microcontroller unit to actuate or interrupt the microcontroller unit, and an alert signal is generated by the microcontroller unit.

The present application discloses a vehicle tire detection device, including a TPMS (Tire Pressure Monitoring System) sensor, an antenna matching network, and a terminal antenna. The TPMS sensor uses ASK/OOK/FSK transmission technology with a data transmission rate greater than 20 kbps. The TPMS sensor is connected to the terminal antenna through the antenna matching network. The terminal antenna is one of a valve stem, a metal base, or a tire rim.