The present invention provides an Active Tire Auto-Location systems for tire pressure monitor sensors and an operating method. The system includes a host, wheel axle rotation detection devices and tire pressure monitor sensors. By allowing the wireless tire pressure detector to receive and compare the rotation information of a toothed ring from the wheel axle rotation detection device and the tire rotation information from the wireless tire pressure detector, each wireless tire pressure detector can identify which wheel axle rotation detection device that corresponds to it. At the same time, the tire position where each wireless tire pressure detector is situated can also be determined. Compared to prior art, it is still possible for the present invention to determine the tire position where each wireless tire pressure detector is situated, without the need for additional modification to the host, thus significantly reducing the inconvenience in replacing tire pressure monitor sensors.

A wheel unit including an environmental pressure sensor, a non-volatile memory for storing a first program and a second program and configuration code, a processing unit for executing the programs, a communication module comprising a wireless transmitter for transmitting at least one parameter indicative of conditions within a tire and a wireless or wired receiver for loading the second program into the non-volatile memory and a battery for powering the wheel unit. The second program may be loaded to the memory by the first program and configured by the configuration code to operate within a specific TPM system.

The present disclosure generally relates to an integrated wireless data system and method for mounting the system on one or more components within a vehicle wheel hub assembly for measuring operational data relating to the condition or status of a brake rotor or other components within a wheel hub assembly, where the integrated wireless data system rotates with the vehicle wheel.

Disclosed is a method for communicating measurement messages between a plurality of electronic measurement modules and an electronic control unit of a motor vehicle. The method includes the steps of measurement (E1), by a primary emitter module, of parameter values associated with the wheel in which the module is mounted, of sending (E2), by the primary emitter module, of measurement messages to a relay module, of reception (E3) by the relay module, of the measurement messages sent, of measurement (E5), by the relay module, of parameter values associated with the wheel in which the relay module is mounted and of sending (E6), by the relay module, of the measurement messages received and of its own measurements to the electronic control unit.

A tire pressure monitor can include: a pressure sensor configured to detect a gas pressure parameter of a tire; a wireless receiver configured to initially be in a sleep mode, and to receive a communication protocol wirelessly after being woken up from the sleep mode; and a microprocessor configured to wake up the wireless receiver according to the gas pressure parameter.

A tire pressure monitoring sensor comprises an environmental pressure sensor, a non-volatile memory for storing a first program and a second program, a processing unit for executing the first program, a communication module including a wireless transmitter for transmitting at least one parameter indicative of conditions within a tire and a wireless or wired receiver for loading the second program into the non-volatile memory and a battery for powering the sensor. The second program contains a sensor operation description which is used by the first program.

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 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 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 tire monitor includes a sensor generating tire data and a plurality of control modules having phase locked loop circuits. The control modules generate output signals carrying the tire data. A first of the control modules is configured to generate first output signals having a first frequency and according to a first protocol. A second of the control modules is configured to generate second output signals having a second frequency and according to a second protocol. In examples, the output signal can be transmitted in parallel to different computing systems.

A tire pressure monitoring device is mounted on a wheel of a vehicle provided with a pneumatic tire. The device contains a tire pressure sensor and a transmitter which transmits signals wirelessly in transmission intervals, between which in each case there is a first transmission pause. A control device controls the sensor, the transmitter and the first transmission pause thereof. A source provides electrical energy to a rechargeable electric accumulator, in which electrical energy delivered from the source is stored until it is required. The state of charge of the rechargeable electric accumulator is monitored by a monitoring device and one or more of the first transmission causes is/are then ended as soon as enough electrical energy is stored in the rechargeable accumulator to operate the tire pressure monitoring device between two successive first transmission pauses until the conclusion of a predetermined number of transmission processes.