The present disclosure relates to a system and method for a tire pressure monitoring system. Embodiments may include receiving and storing an input signal in a memory; receiving a digital signal from the memory at a digital signal processor, wherein the digital signal processor includes a plurality of selectable filters; filtering the digital signal through the plurality of selectable filters, wherein filtering the digital signal generates a forward-filtered digital signal; storing the forward-filtered digital signal in the memory; reversing the forward-filtered digital signal, wherein reversing the forward-filtered digital signal generates a reverse-filtered digital signal; and filtering the reverse-filtered digital signal through the plurality of selectable filters, wherein filtering the reverse-filtered digital signal generates a processed signal.

A measurement device for measuring the pressure of a wheel (3) of a vehicle, the measurement device comprising a stationary portion (5) and a movable portion (14) for being driven in rotation by the wheel, the stationary portion including a first printed circuit (7) having at least one first track formed thereon defining a first winding, the movable portion including a second printed circuit (16) having at least one second track formed thereon defining a second winding, the second printed circuit being arranged to be connected to a pressure sensor (15), the first winding and the second winding being coupled together to form a wireless communication channel, the measurement device being arranged in such a manner that the pressure sensor is electrically powered by the stationary portion via the wireless communication channel, and in such a manner that uplink data comprising pressure measurement data is transmitted to the stationary portion (5) by the movable portion (14) via the wireless communication channel.

An embodiment tire pressure sensor position identification apparatus includes a receiver configured to receive signals from tire pressure sensors and to receive information about wheel pulse counts from wheel speed sensors, the tire pressure sensors being mounted on an inner wheel and an outer wheel of a vehicle to have a specific phase difference therebetween, and a controller configured to identify positions where the tire pressure sensors are mounted based on the specific phase difference, the signals received from the tire pressure sensors, and the wheel pulse counts.

A transmitter includes a power source of the transmitter, a condition detecting section that detects a condition of a tire, a data generating section that generates transmission data that contains tire condition data indicating the condition of the tire detected by the condition detecting section, a transmitting section that modulates the transmission data and transmits the modulated data, a storage section storing a correspondence relationship in which values of a specific bit among bits of the transmission data that change as the wheel assembly rotates are respectively assigned to specific angles set for the rotation angle of the wheel assembly, and a transmission control section that transmits the transmission data from the transmitting section when detecting that the rotation angle of the wheel assembly is any of the specific angles.

The present invention relates to the system for measuring the slip of a tyre (10) with respect to a rim (20), on which said tyre (10) is mounted.

In particular, said system comprises a first electronic device (1) and a second electronic device (2), each of which is configured at least to acquire, filter, store and send data, and a processing unit (3), external to said electronic devices (1, 2), configured at least to receive and process the data sent by each electronic device (1, 2), in order to measure said slip by measuring an angle (α) and comparing the value of this angle with respect to at a reference angle α.sub.ref.

The present invention also relates to method for measuring the slip of a tyre (10) with respect to a rim (20), on which said tyre (10) is mounted.

A duplex Bluetooth transmission tire pressure system and a method thereof are provided. The system includes a Bluetooth tire pressure detector and a transceiver host, and the two can duplex Bluetooth transmit to each other, so that to complete locating and tire condition detecting. The transceiver host controls a locating program that controls the Bluetooth tire pressure detector to start or stop and limit the transmitting packet of the tire condition program of the Bluetooth tire pressure detector.

A sensing system for a vehicle includes wheel end sensors (WES), each WES proximate to at least one predetermined tire and configured to sense angular data, including at least one of angular position, angular velocity, angular acceleration, and/or angular displacement. The system includes a plurality of tire pressure monitoring (TPM) sensors, each TPM sensor inside one of the tires and configured to sense pressure, temperature, and angular data within said tire. The sensing system is configured to compare the angular data sensed by each WES to the angular data sensed by each TPM sensor to automatically identify, for each TPM sensor, a corresponding WES, and based on the position on the vehicle of the predetermined tire of the corresponding WES, identify the position on the vehicle corresponding to said TPM sensor.

A method of sensing wheel rotation can include: sensing magnetic force information in an environment of a wheel by a magnetometer to obtain measured magnetic force information; generating relative magnetic force information by performing mathematical operation processing in accordance with the measured magnetic force information, where the relative magnetic force information does not change with geomagnetic field and does change with a rotation angle of a wheel; and obtaining angle information related to the rotation angle of the wheel in accordance with the relative magnetic force information.

The invention relates to a method for identifying electronic wheel units (12-1 to 12-6b) arranged on vehicle wheels (W1-W6b) of a vehicle (1), by means of which method those electronic wheel units (12-3a, 12-3b; 12-4a, 12-4b; 12-5a, 12-5b; 12-6a, 12-6b) which are arranged on vehicle wheels (W3a, W3b; W4a, W4b; W5a, W5b; W6a, W6b) connected to one another for conjoint rotation are identified, the method comprising the steps of: acquiring a respective cumulative number (Ni) of revolutions of each of the vehicle wheels (W1-W6b) using the electronic wheel units (12-1 to 12-6b); comparing with one another the cumulative numbers (Ni) of revolutions of the vehicle wheels (W1-W6b), identifying those electronic wheel units (12-3a, 12-3b; 12-4a, 12-4b; 12-5a, 12-5b, 12-6a, 12-6b) for which the cumulative numbers (Ni) of revolutions at least approximately coincide as being arranged connected to one another for conjoint rotation.

A tire position determination system provided in a vehicle including a first tire and a second tire includes an initiator that transmits a command signal, a first detector attached to the first tire, a second detector attached to the second tire, and a monitoring unit. A distance between the first tire and the initiator is equal to or shorter than a distance between the second tire and the initiator. Each of the first detector and the second detector includes an acceleration sensor. A detection signal includes a detection value from the acceleration sensor. The monitoring unit performs determination processing for determining a position of the first tire and a position of the second tire based on positional relation between the detector and the initiator estimated from the detection value from the acceleration sensor.