A wheel unit for a system for transmitting data from the wheel unit to a receiver of a vehicle. The wheel unit is configured for mounting to a wheel of the vehicle, and the wheel unit includes the following: a memory for storing wheel type data related to the type of the wheel at which the wheel unit is mounted; a processor for processing the wheel type data stored in the memory; a transmitter for RF-transmitting data telegrams to a vehicle-mounted receiver. The processor determines an RF power value based on the stored wheel type data, and the transmitter transmits the data telegrams with an RF power based on the determined RF power value.

A tire air pressure detection device includes a plurality of transceivers and a receiver. The plurality of transceivers are correspondingly provided in a plurality of wheels of a vehicle. Each wheel has a tire. The receiver is attached to a vehicle body. Each of the plurality of transceivers outputs a detection signal indicative of an air pressure of the tire of the corresponding wheel. Each of the plurality of transceivers processes the detection signal, and generates a frame storing the processed detection signal as data related to the air pressure of the tire. The receiver receives the frame. The receiver detects the air pressure of the tire based on the data stored in the received frame.

A wireless tire pressure monitor system configured for transmitting tire pressure information of a tire of a vehicle is described. The wireless tire pressure monitor system comprises a vehicle-based receiver, at least one tire pressure sensor configured to be mounted inside the tire and configured to measure the air pressure within the tire, and a transmitter electronically connected to the tire pressure sensor and configured to transmit a signal comprising the tire pressure information to the vehicle-based receiver. The wireless tire pressure monitor system is configured to transmit the signal in a first transmission mode from the transmitter to the vehicle-based receiver when the tire is rotating, and transmit the signal in a second transmission mode from the transmitter to the vehicle-based receiver when the tire is stationary. Moreover a method of transmitting tire pressure information employing a wireless tire pressure monitor system is described.

A method for configuring an electronic housing mounted on a wheel of a motor vehicle for the purposes of transmitting signals intended for a central unit incorporated into the motor vehicle, involving dividing one turn of the wheel into a predetermined number n of referenced sectors, commanding the emission of a sequence of n successive signals, referred to as configuration signals, which are synchronized with the n referenced sectors and of emission duration t.sub.emT/n, where T is the period of rotation of the wheel, identifying and memorizing the referenced sectors corresponding to the configuration signals received by the central unit, and configuring the electronic housing by selecting at least one of the identified referenced sectors for the subsequent emission of the signals intended for the central unit.

A tire-side apparatus includes: a first storage unit storing an identifier for identifying the tire-side apparatus. A signal reception strength measurement unit measures signal reception strengths of measurement signals. A specification unit specifies the number of received measurement signals. A second storage unit stores the number of the received measurement signals transmitted sequentially from a vehicle body-side apparatus to tire-side apparatuses corresponding to a plurality of tires, and a signal reception order in which the measurement signal with the highest signal reception strength among the received measurement signals was received. The tire-side apparatus transmits a response signal including an identifier and information indicating the reception order and number of measurement signals stored in the second storage unit, and the vehicle body-side apparatus determines a correspondence based on comparison of the information indicating the number of measurement signals and signal reception order transmitted from the multiple tire-side apparatuses.

The disclosed technology generally relates to a tire sensor and more particularly to a tire sensor configured to be fixed to a tire in a screwing manner, and a tire having the same. In one aspect, a tire sensor configured to be fixed to a tire in a screwing manner includes a sensor module configured to be attached to an inner surface of a tread of a pneumatic tire to detect conditions of the tire, a sensor casing formed to surround the sensor module, and a sensor fixture including a fixing screw to fixedly attach the sensor casing to the inner surface of the tread of the tire in a screwing manner by turning the fixing screw. In another aspect, a tire includes the tire sensor fixedly attached in a screwing manner therein for detecting tire conditions.

A programming unit for TPMS sensors includes at least a microcontroller and memory storing at least a vehicle group database comprising multiple vehicle groups, each vehicle group comprising at least one vehicle, a version pair database comprising multiple version pair groups, each version pair group representing one vehicle group and comprising at least one version pair wherein each version pair includes an associated application version and an associated sub-application version, an application database comprising multiple application versions, each application version includes an associated binary file, and a sub-application database comprising multiple sub-application versions, each sub-application version includes an associated binary file.

The present application provided a monitoring method and a monitoring device based on RF technology, where the monitoring method includes: collecting monitoring information of a target object through a MEMS chip; and outputting a pulse sequence carrying the monitoring information to an oscillator and a power amplifier in a RF circuit through the MEMS chip, where the monitoring information is characterized through the pulse sequence by a time interval between two adjacent pulses; and modulating a phase of a generated carrier by the oscillator according to the pulse sequence, and amplifying a modulated signal by the power amplifier, so that an amplified signal is transmitted through an antenna; where the MEMS chip works in an operation mode when outputting a high level of the pulse sequence, and in an idle mode when outputting a low level of the pulse sequence or ending outputting the pulse sequence.

A charger incorporated in a vehicle wheel supporting rolling bearing unit detects an output voltage of an electric generator and calculates a rotation speed of a hub. When a rotation speed of the hub is in a low speed state where a sensor and a wireless communication device are operated by electric power supplied 5 by a battery, a frequency of wireless communication performed between the wireless communication device and a calculator disposed on a vehicle body side is changed according to the rotation speed of the hub or a traveling speed of a vehicle.

A self-adaptive method for assisting in the inflation of tires of a vehicle that is stationary in an immobilization mode, the method including continuously measuring at least the pressure of each tire by way of a wheel unit, transmitting signals on the state of the tires between each wheel unit and a central unit, these signals being transmitted by each wheel unit through frequency-shift keying between two first predetermined frequencies defining a first frequency band. In a immobilization mode, each wheel unit is reprogrammed such that it transmits, to the central unit, first and second frequency-shift keyed signals respectively with first and second frequency bands, the second band being wider than the first band.