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 method of processing a signal representative of at least one physical property of a physical system comprising generating a set of predicted signals, the set of predicted signals comprising at least one member, each member representing a physical state of the physical system, generating a predicted waveform or the signal for each member dependent upon the physical state, and comparing each predicted waveform with the signal to determine the accuracy with which the physical state represented by the member for which the predicted signal was generated matches an actual physical state of the physical system. In an example embodiment, the physical system is a tyre and the state includes the air pressure within the tyre.

An antenna system for a vehicle includes a housing defining an interior space having a center. A component is provided for at least one of transmitting and receiving signals indicative of a vehicle condition. A loop antenna is provided in the interior space and electrically connected to the component. A parasitic element is provided for increasing a signal strength of the antenna system. The parasitic element extends from a first end to a second end spaced from the first end by a gap.

A tire pressure monitoring module of a vehicle, a tire localization system and a tire localization method of a vehicle are provided. Each of tires is determined to be a left tire or a right tire based on a phase relationship of components of magnetic field intensity in two different directions in the tire. The components of magnetic field intensity in two different directions are measured by a magnetometer in the tire pressure monitoring module. The tire is determined to be a front tire or a right tire based on magnitude of an AOA of a first Bluetooth module in the tire pressure monitoring module relative to a multi-antenna Bluetooth host. In this way, the tires of the vehicle are positioned automatically with a high precision. In addition, the tire pressure monitoring module may be mounted on any tire without any distinction, which reduces the installation cost.

A tire localization method for a vehicle, can include: matching a first Bluetooth module in each tire of the vehicle with a second Bluetooth module of a Bluetooth host in the vehicle; acquiring first data representing a received signal strength indication of a first radio frequency signal sent by the first Bluetooth module in each tire; acquiring an angle of arrival of the first Bluetooth module in each tire relative to the second Bluetooth module; and locating each tire based on the first data and the angle of arrival.

The present invention relates to a wireless tire monitoring device for a vehicle. Accordingly, the wireless tire monitoring device (100) includes: a) a tire pressure/temperature signal transmitting device (110); b) at least one sensor unit (130) for measuring or detecting at least one parameter relating to the conditions of the tire (200); c) an antenna (150) for transmitting signal corresponding to the tire conditions; wherein the wireless tire monitoring device (100) is detachably mounted to a valve stem (210) of the tire (200) and being served as a cap for the valve stem (210); wherein the antenna (150) includes at least one curvature strip (151) configured at same axis (Z-Z) with the valve stem (210) so that it centre axis aligns with the valve stem (210) of the tire (200); and wherein the antenna (150) and valve stem (210) share a common axis (X-X) of a tire wheel (230) and adapted to be revolved about the common axis (X-X) of the tire wheel (230).

Method (200) for detecting a position of a plurality of sensors (20) associated to a respective wheel of a vehicle (25), the method (200) comprising: by each sensor (20), during a determined time window, wirelessly transmitting (1) a respective time sequence of packets, each packet comprising a respective identification code of the sensor (20); by at least one receiver (21), comprising a respective antenna (23) installed on the vehicle (25) in a determined position, receiving (2) from each sensor (20), during the determined time window, a respective sub-group of packets of the respective time sequence; for each sensor (20): determining (3, 4) a respective first number representative of an overall number of packets of the respective sub-group, and a respective second number representative of an overall number of packets of the respective time sequence of packets; calculating (5) a respective parameter as a function of the respective first and second number; determining (6) the position of the sensors (20) as a function of the determined position of the respective antenna (23) and as a function of a comparison between the respective parameters.

A system for vehicle wheel position localization includes sensors mounted on each tire of a vehicle. Each axle of the vehicle is associated with a first directional antenna arranged to capture wireless output signals from each tire on one side and a second directional antenna arranged to capture wireless output signals from each tire on the other side. A data processing unit (e.g., onboard controller, remote server) receives the output signals from each sensor via at least the respective directional antennas, and automatically identifies respective wheel locations on the vehicle based on a mapped relative location for each of the directional antennas and further based on a detected relative output signal strength for any tire and/or wheel sensors associated with axles having a plurality of tires on each side of the vehicle. A switching device may optionally enable selection between each directional antenna for implementation of the respective output signals.

A low-frequency emission electronic unit (20) includes two low-frequency antennas (B1, B2). The second antenna (B2) is passive and resonant, oriented along the main axis (Y) of the first low-frequency antenna (B1) and is adapted to generate two low-frequency fields (D2, D2) at right angles to the field (D1) emitted by the first antenna (B1). The low-frequency emission electronic unit (20) makes it possible to reduce the zones of rupture of reception of the low-frequency signals by the wheel unit (13) situated in proximity in which the low-frequency signals emitted by the low-frequency emission electronic unit are not received by the closest wheel unit (13). A low-frequency signal transmission method alternating the emissions of waves by the two antennas (B1, B2) is also described.

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.