Abstract: A method for localizing individual wheels and/or wheel identifiers of individual wheels of a double wheel of a motor vehicle includes the following steps: determining the axle of the respective double wheel; determining the motor vehicle side of the respective double wheel; determining the position of the respective double wheel by the position of the axle and the position of the motor vehicle side; determining the direction of travel of the motor vehicle; determining the direction of rotation of the individual wheels and/or wheel identifiers of the respective double wheel; localization of the individual wheels and/or wheel identifiers of the individual wheels by the position of the associated double wheel, the direction of travel of the motor vehicle and the rotational directions of the individual wheels and/or wheel identifiers.

Abstract: A method and a monitoring unit for monitoring an air pressure in a tire of a motor vehicle register a measured value of the air pressure in the tire. The current and/or future distance of the motor vehicle relative to a service station and/or an operating situation of the motor vehicle associated with a service process is then determined. An alarm signal is only then output if the measured value does not reach a predefinable threshold value and one or both of the conditions applies: the current or future distance of the motor vehicle relative to a service station does not reach a predefinable threshold value, the registered operating situation corresponds to a predefinable operating situation.

Abstract: A method and a measurement system are specified for localizing at least one wheel on a motor vehicle. In this case the operating situation of the motor vehicle and the wheel load of the at least one wheel and/or a variable dependent on this is determined. Then the at least one measured value of the wheel load is compared with a value assigned to the operating situation. As an alternative or in addition, the comparison of at least one parameter dependent on at least two measured values can be undertaken with at least one of the parameters assigned to this operating situation. Finally the point on the motor vehicle at which the wheel is mounted is determined on the basis of the comparison results.

Abstract: A rotational direction detector is specified which is provided for mounting to a circumferential segment of a wheel having at least one sensor, wherein a change in the output signal of the sensor occurs when the circumferential segment enters and/or leaves the wheel contact area. Furthermore a method is specified for determining the direction of rotation of a wheel, wherein the signal change is determined and a rotational direction signal is derived therefrom.

Abstract: A wheel electronic system and a method for operating a wheel electronic system. The wheel electronic system interacts with a tire secured to a vehicle and produces and emits, based on a captured trigger signal, a message containing information on at least one tire parameter measured with the wheel electronic system. The wheel electronic system is operated in an operational mode in which the system is configured to periodically capture the trigger signals in a first time period. Based on a predetermined first operational ratio of the vehicle, the wheel electronic system automatically switches to a test mode, in which the wheel electronic system is configured to periodically capture the trigger signals in a second time period which is substantially shorter than the first time period.

Abstract: A method and a measuring system determine a wheel load. These involve measuring a deformation of a tire and using a set of equations and equation parameters to calculate from the deformation the wheel load acting on the tire. In addition, a wheel load or a variable dependent on the load, which is used to calculate the wheel load, is received from an external system. Finally, the two wheel loads determined in different ways are compared, and the equations and/or equation parameters are adapted on the basis of the comparison.

Abstract: A method and a device for locating tires mounted on a vehicle. High frequency signals are captured by way of a first transmit/receive device arranged on a vehicle, said high-frequency signals originating from a wheel electronic system arranged on the vehicle, said wheel electronic system interacting with tires of a first tire group that are mounted on the vehicle. A trigger signal having a frequency that is clearly lower than the frequency of the high frequency signal, is emitted by the first transmit/receive device.

Abstract: A device and a method control the operation of an electronic wheel unit that is allocated to a vehicle wheel. The method includes recording data relating to the operating conditions of the wheel using at least one condition recording unit and/or recording data relating to the energy that is currently available to the electronic wheel unit from a generator and/or an energy accumulator device using at least one energy recording unit. The operation of the electronic wheel unit and the defined energy consumption of the electronic wheel unit is controlled in accordance with the data that has been recorded by the condition recording unit and/or the energy recording unit using a central control unit that is connected to the condition recording unit and/or the energy recording unit.

Abstract: A tire monitoring system in or for a vehicle for determining tire-specific parameters has a distributed bus architecture. At least one intelligent receiving device is configured to receive transmit signals of a wheel electronic system. The receiving device has a signal processing device that carries out an evaluation of the received transmit signals and/or an evaluation of received signals of another subscriber of the bus architecture. The invention also relates to methods for operating the intelligent receiving devices of a distributed bus architecture of the novel tire monitoring or tire pressure system.

Abstract: A method for stimulating wheel electronics systems of single tires of at least one tire group in a motor vehicle. The wheel electronics systems are stimulated with a low frequency trigger signal, as follows: a trigger signal is emitted from an LF trigger to the wheel electronics systems of the relevant tire group at a variably adjustable first transmission field strength. Radio frequency signals are transmitted from those wheel-side wheel electronics systems, at which a sufficiently high transmission field strength of the trigger signal has arrived containing an item of trigger information, to a vehicle-side receiving unit. A determination is made of the number of RF signals received by the vehicle-side receiving unit, each containing one item of trigger information.

Abstract: A method for localizing individual wheels and/or wheel identifiers of individual wheels of a double wheel of a motor vehicle includes the following steps: determining the axle of the respective double wheel; determining the motor vehicle side of the respective double; determining the position of the respective double wheel by the position of the axle and the position of the motor vehicle side; determining the direction of travel of the motor vehicle; determining the direction of rotation of the individual wheels and/or wheel identifiers of the respective double wheel; localization of the individual wheels and/or wheel identifiers of the individual wheels by the position of the associated double wheel, the direction of travel of the motor vehicle and the rotational directions of the individual wheels and/or wheel identifiers.

Abstract: A device and a method for determining a wheel position on a vehicle, for example an automobile. Long-wave antennae of a vehicle access system already present in the vehicle transmit a signal, which is measured by a long-wave receive unit of a tire electronic system and used to detect the position of the wheel on the vehicle. The electrical or magnetic receive field strength of the signal of a specific long-wave antenna for example is in particular detected by a tire electronic system and used to determine the position of the wheel on the vehicle.

Abstract: A receiving antenna with a rigid directional pattern, that is to say with an anisotropic receiving sensitivity of the receiving antenna, is used for localizing a wheel electronics unit in a wheel of the motor vehicle. Suitable evaluation of the received electromagnetic signals is provided in order to obtain a functionality achieved by way of the displacement or rotation of the directional antenna in the case of prior solutions. In this respect, a level of the received electromagnetic signal is compared with a predefined threshold value. As the result of the comparison, the wheel electronics unit is localized as being arranged in a wheel of the first wheel group or as being arranged in a wheel of the second wheel group.

Abstract: A method for measurement, storage and provision of key tire data, uses sensors assigned to the individual tires, tire electronics units assigned to each tire, and a vehicle-side control unit in which all key tire data measured over the period of the use of a tire will be stored in an electrical memory unit of the associated tire electronics unit, with the tire electronics unit arranged on each tire a current tire mileage performance is determined, added to the existing, stored overall mileage performance and stored as new overall mileage performance in the memory unit, with a transmission unit arranged at each tire the stored key tire data and the overall mileage performance are transmitted to the vehicle-side evaluation unit, and the energy required for operation of the tire is obtained in each case from energy generators each assigned to a tire.

Abstract: A method for monitoring a wheel parameter of a wheel, in particular a vehicle wheel, by a monitoring device. The monitoring device contains a power supply having an energy converter for converting kinetic energy from the wheel into operating power for the wheel electronics, and a transmission unit for transmitting the wheel parameter to an evaluation unit.

Abstract: A device monitors a physical variable, in particular the tire pressure, of a wheel fitted on a vehicle. The device can be mounted on the wheel and contains an electrical energy source, a sensor for determining the physical variable to be monitored, a transmitter for transmitting a radio message which contains data supplied by the sensor, and an operations detector for generating an operation signal.

Abstract: A device and a method control the operation of an electronic wheel unit that is allocated to a vehicle wheel. The method includes recording data relating to the operating conditions of the wheel using at least one condition recording unit and/or recording data relating to the energy that is currently available to the electronic wheel unit from a generator and/or an energy accumulator device using at least one energy recording unit. The operation of the electronic wheel unit and the defined energy consumption of the electronic wheel unit is controlled in accordance with the data that has been recorded by the condition recording unit and/or the energy recording unit using a central control unit that is connected to the condition recording unit and/or the energy recording unit.

Abstract: A method for monitoring a physical variable, in particular the tire pressure, of a wheel fitted on a vehicle is performed when the vehicle travels. The physical variable is measured at the wheel and transmitted to a receiver on the vehicle. An evaluation/storage unit determines and stores a predefined first comparative intensity distribution of the receiving strength of the radio signals at a specified deflection angle between the longitudinal axis of the vehicle and the plane of the wheel and a random sample for the actual intensity distribution of the receiving strength of the radio signals being recorded by the repeated transmission and receiving of a plurality of radio messages.

Abstract: A device and a method for determining a side position of wheels during cornering of a motor vehicle include a plurality of sensor devices each being installed at a tire of a wheel for detecting mechanical deformation of the tire when it rolls forward on a road surface. Electronic wheel units are each connected by signal to an assigned sensor device. A central evaluation device is connected to the electronic wheel units for receiving detected deformation data and determining the side positions of the individual wheels during the cornering of the vehicle, from contact area lengths determined from deformation data.

Abstract: A system for monitoring a vehicle fitted with pneumatic tires has, on at least one wheel of the vehicle, a pressure sensor for sensing the tire inflation pressure, and a deformation sensor joined to the tire for sensing deformations of the tire. A data transmission device transmits the output signals from the sensors to an analysis device, which determines from the output signals a result in dependence on the output signals from the two sensors. Frequency-dependent analysis is employed to derive, from the output signals from the deformation sensor, a signal corresponding to the static loading on the tire and a signal corresponding to the nature of the road surface.