A wireless tire pressure detector automatic find and locate system and the operation method thereof are provided. The wireless tire pressure detector automatic find and locate system includes a plurality of wireless tire pressure detectors and a wireless host. The wireless host and each wireless tire pressure detector are wirelessly paired and connected through a wireless system, and a first wireless tire pressure detector is designated. The wireless host and the first wireless tire pressure detector detect signal data between the first wireless tire pressure detector and other wireless tire pressure detectors, and the first wireless tire pressure detector transmits the data to the wireless host for analyzing and positioning to localize each wireless tire pressure detector.

A transmitter is configured to be attached to each of wheel assemblies in a vehicle and execute a process in accordance with a command included in a trigger signal. The transmitter includes a condition detecting section, a trigger receiving section which receives, as the trigger signal, an unmodulated wave having a received signal strength indication a transmitting section, and a controlling section. When the trigger receiving section receives the unmodulated wave, the controlling section causes the transmitting section to transmit the signal in response to the unmodulated wave. The controlling section is configured to execute an accumulation process to accumulate reception time of the unmodulated wave from a starting point in time, and shift into a restriction state to restrict a response to the unmodulated wave when the accumulated reception time reaches a predetermined time.

A multi-antenna tire-pressure monitoring system with automatically positioning function includes tire-pressure sensors, a receiver and a central processing unit. The tire-pressure sensors are installed on tires of a vehicle, respectively, and each tire is installed with at least one tire-pressure sensor. Each tire-pressure sensor has a signal transmitting unit, the receiver includes two antennas and a built-in receiver control unit. A first phase angle and a second phase angle are formed between the signals transmitted from each tire-pressure sensor and the two antennas, the receiver control unit receives the first phase angle and the second phase angle, and the arithmetic unit calculates phase-difference parameter values, to determine the positions of the tires, the signal receiving unit built in the central processing unit receives and displays the information calculated by the arithmetic unit of the receiver, so as to complete positioning for the tires.

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.

A tire mounting position detection system measures a first signal strength which is the strength of a radio signal received by a first receiver (R1) for each transmitter, measures a second signal strength which is the strength of the radio signal received by a second receiver (R2) for each transmitter, and calculates an strength ratio which is a ratio using the first signal strength and the second signal strength for each transmitter. The tire mounting position detection system detects a wheel position where a tire equipped with a transmitter is mounted on the basis of the first signal strength, the second signal strength and a strength ratio for each transmitter.

A method for detecting a change in location of at least one wheel of a motor vehicle, the vehicle having at least one central processing unit, one wheel unit which includes an electronic assembly of sensors and which is mounted on the wheel, and one bidirectional communications assembly. The method notably includes a first comparison step, during which a first evaluation pattern is compared with a first reference pattern to determine whether the location of the wheel has changed, the patterns being representative of the effective location of the wheel unit in the motor vehicle.

The present invention provides a tire-wear detection sensor for a vehicle having a telematics system and tires including a temperature sensor, a pressure sensor, and an RF antenna in electronic communication with the sensors, and capable of transmitting the temperature signal and the pressure signal to the telematics system.

A method of localizing a TPMS sensor module includes transmitting, by the TPMS sensor module, a TPMS signal; and localizing, by a localization module, the TPMS sensor module based on receiving the TPMS signal at a phase array antenna including a plurality of reception antennas each configured to receive the TPMS signal. Localizing the TPMS sensor module includes measuring a phase of the TPMS signal at each of the plurality of reception antennas such that a plurality of phases corresponding to the TPMS signal are determined, and determining a location of the TPMS sensor module based on the plurality of phases.

An apparatus is provided for auto-locating positions of a plurality of wireless sensors on a vehicle. The apparatus comprises a receiving unit for receiving signals from the plurality of wireless sensors. The apparatus further comprises a processing unit arranged to calculate a probability value for each one of the plurality of wireless sensors based upon signals that have accumulated over a period of time to provide a table of probability values. Each probability value contained in the table during a calculation cycle of the processing unit is indicative of likelihood of one of the plurality of wireless sensors being located at a corresponding one of a plurality of positions on the vehicle. Each one of the plurality of wireless sensors is associated with the position having the highest probability value during the calculation cycle.

A system for determining abnormalities of a TPMS that includes a pressure sensor that senses a pressure inside a tire and transmits sensed pressure data as a radio signal, a reception unit that receives the radio signal from the pressure sensor and measures strength of the received radio signal, and a determination unit that determines an abnormality of the TPMS based on the radio signal received, and the strength of the radio signal measured, by the reception unit.