A method of measuring and transmitting a tire characteristic using a sensor device mounted to a tire of a wheel, the sensor device comprising a sensor element, an accelerometer, a wireless transmitter, and a microprocessor; the method comprising the steps of: a) obtaining acceleration data; b) digitally filtering the acceleration data; c) determining moments in time when the wheel is in an angular position range; d) obtaining other sensor data; e) transmitting the other sensor data at said moments in time, step b) comprising using exponential moving average filters connected in series, corresponding to a predefined set of formulas comprising parameters, and f) determining number of samples per 360 rotation, and setting the parameters to a value proportional to said number of samples. A sensor device adapted for performing said method.

The invention relates to a tire-monitoring system for monitoring a tire air pressure and/or at least one other tire-specific quantity in tires of a vehicle; comprising a plurality of tire sensors for positioning in the tires of the vehicle; each tire sensor having at least one sensing device for sensing a tire-specific quantity and a control device that has at least one transmitter for transmitting signals in dependence on the sensed quantity and/or a quantity previously programmed in the control device; and comprising a router for installing in the vehicle, which router comprises a receiver for receiving the signals of the plurality of tires sensors, a memory for storing the quantities of the tire sensors transmitted by means of the signals, and an interface for the wired or wireless retrieval of the stored quantities; the router having an electrical power connection, by means of which the router can be connected to a vehicle electrical system for the supply of power to the router. The tire-monitoring system according to the invention is characterized in that the router has an energy store, which provides an electrical power supply when the vehicle electrical system is switched off and which can be charged by means of the electrical power connection.

A first tire pressure sensor module is configured to provide information related to a pressure of a tire of a vehicle and comprises a pressure sensor configured to determine the information related to the pressure of the tire. The pressure module further includes a controller configured to selectively operate the tire pressure sensor module in an active state and in an inactive state, wherein an energy consumption of the tire pressure sensor module is lower in the inactive state than in the active state. The controller is further configured to control an output of the information related to the pressure of the tire in the active state, and operate the tire pressure sensor module in the inactive state based on determining that information related to a velocity of the tire indicates a velocity above a threshold.

A wireless tire pressure monitoring system (TPMS) emulation device for a vehicle and a method of activating the device. The device has a memory, a microcontroller, a radio frequency transmitter, a trigger, an actuator and a power supply. The memory is adapted to have stored thereon a software module. The microcontroller is powered by a power supply, such as a battery, and is connected to the memory. The microcontroller is adapted to control a TPMS transmission signal indicative of an acceptable tire pressure signal, according to the software module. The radio frequency transmitter is connected to the microcontroller and is adapted to transmit the transmission signal. The trigger is connected to the microcontroller and is adapted to activate a TPMS sensor pairing of the emulation device for at least one tire of the vehicle. The actuator is connected to the microcontroller and is adapted to activate the emulation device.

A rubber patch, which is useable for mounting an active electronic component to a tire, is described. The rubber patch includes a base having a connecting face and support face. The connecting face is substantially planar and is intended to be fixed to an internal surface of the tire. The support face is opposite the connecting face and is arranged to support the active electronic component. The rubber patch further includes a passive label arranged between the connecting face and the support face. The passive label is for identifying the tire and is provided with a memory for storing a unique identification data item pertaining to the tire. A corresponding tire monitoring system, which is configured to read at least the identification data item pertaining to the tire, also is described.

A rubber patch, which is useable for mounting an active electronic component to a tire, is described. The rubber patch includes a base having a connecting face and support face. The connecting face is substantially planar and is intended to be fixed to an internal surface of the tire. The support face is opposite the connecting face and is arranged to support the active electronic component. The rubber patch further includes a passive label arranged between the connecting face and the support face. The passive label is for identifying the tire and is provided with a memory for storing a unique identification data item pertaining to the tire. A corresponding tire monitoring system, which is configured to read at least the identification data item pertaining to the tire, also is described.

A method of building vehicle data in a tire pressure diagnosis tool includes: building owner information in the tire pressure diagnosis tool; entering a vehicle identification number and a tire identification number; and obtaining a tire pressure sensor identification number and a tire environment parameter value, wherein complete linking data pertaining to every owner identity and vehicle status are built in a tire pressure diagnosis tool to not only enable automobile manufacturers and automobile repair shops to effectuate vehicle maintenance and management conveniently, but also provide vehicle identification numbers and tire identification numbers to a competent authority timely and as needed.

A first tire pressure sensor module is configured to provide information related to a pressure of a tire of a vehicle and comprises a pressure sensor configured to determine the information related to the pressure of the tire. The pressure module further includes a controller configured to selectively operate the tire pressure sensor module in an active state and in an inactive state, wherein an energy consumption of the tire pressure sensor module is lower in the inactive state than in the active state. The controller is further configured to control an output of the information related to the pressure of the tire in the active state, and operate the tire pressure sensor module in the inactive state based on determining that information related to a velocity of the tire indicates a velocity above a threshold.

A smart tag assembly is designed for mounting on an object to be tracked. The smart tag assembly comprises a multiple layer RFID laminate adapted for electronically storing and processing data, and wireless communicating data when interrogated by an RFID reader. The laminate comprises an RFID inlay including a microchip and antenna formed with a substrate, and laminated between an outside label cover and backing. A low-profile tag carrier defines a recessed pocket designed for receiving and holding the RFID laminate.

A wheel assembly position identifying apparatus includes transmitters, each of which is provided in one of wheel assemblies, and a receiver, which is provided in a body of a vehicle. Each transmitter includes a transmission section, an acceleration sensor, and a transmission-side control section. The receiver includes a reception section, which is configured to receive the signals, and a reception-side control section, which is configured to execute a first identifying process and a second identifying process. In the first identifying process, the positions of the wheel assemblies, in which the corresponding transmitters are provided, are identified based on variations of the rotational positions of the wheel assemblies at the time when the constant position signals are received. In the second identifying process, the positions of the wheel assemblies, in which the corresponding transmitters are provided, are identified based on the received signal strength indications (RSSIs).