Abstract: The invention relates to an electric motor, in particular an electronically commutated electric motor. The electric motor has a stator, a rotor and a housing, which accommodates at least the stator and the rotor in a cavity. The electric motor also has a power output stage, which is connected to the stator and is designed to energize the stator in order to induce a rotating magnetic field. The power output stage has at least one power semiconductor with a thermal contact area, wherein the thermal contact area is thermally conductively connected to the housing, with the result that heat generated in the power semiconductor can be dissipated to the housing. According to the invention, the housing has a housing cup, which at least partially surrounds the cavity and is preferably thermally conductive and which has a cup wall, wherein the cup wall has a mating contact area corresponding to the thermal contact area.

Abstract: A method and a monitoring unit for monitoring a tire of a vehicle record a first measured value of revolutions of a tire with a first sensor. In addition, a second measured value of the revolutions of a tire is recorded with a second sensor. Alternatively, a second measured value of a second, different measured variable of a tire can also be recorded. In a further step, the directly measured or derived measured values of a measured variable are compared and an error signal is generated if a determined deviation is greater than a predefinable tolerance value.

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 method locates an installation position of vehicles wheels in a motor vehicle having at least one vehicle wheel containing a wheel electronics unit. The method includes: determining from the wheel electronics unit a first rotational angle position of the vehicle wheel associated with the wheel electronics unit; transmitting a transmission signal with a first piece of rotational angle information dependent on the determined first rotational angle position; determining from the vehicle second rotational angle positions of the vehicle wheels, and depending thereon, providing second rotational angle information. The first rotational angle information is compared with the second rotational angle information. The installation position of the vehicle wheel associated with the wheel electronics unit is determined depending on the comparison. A device is provided for performing the method.

Abstract: A wheel electronics unit for a wheel information device in the installed state is arranged in a vehicle wheel of a vehicle. The wheel electronics unit contains a first sensor that is configured to record a measuring signal, which includes at least one first wheel-specific parameter, and an evaluation unit, which is configured to determine a current rotational position of the vehicle wheel at the time of the measurement on the basis of the measurement signal.

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: According to the invention, a method for compensating for temperature related measurement errors in an optical arrangement, comprising at least one lens is designed with a view to an economical and reliable as possible compensation for temperature related measurement errors without significant increased production expense, wherein a multicolored beam is passed through the optical arrangement, which is focused at points at varying distances from the lens as a result of the chromatic aberration of the lens, at least a part of the spectrum of the light beam being at least partly reflected within the optical arrangement and directed to a detector device by means of which a determination of a spectrum is carried out, the temperature of the arrangement is determined from the spectrum recorded by the detection device and a compensation for temperature related measurement errors is carried out based on the temperature determined thus. A corresponding optical arrangement in disclosed.

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 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, a sensor, a detector and a system are provided for locating at least one wheel on a vehicle. A signal is received from a first sensor mounted on the wheel, the signal providing a position of the wheel. Additionally, a measurement value is received from a second sensor that measures the angular position of a wheel and that is associated with a specific position of the vehicle. When the phase position of the first signal stays within a predefined tolerance range relative to the measured value within a specific observation period, the first sensor can be associated with the second sensor.

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 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: According to the invention, a method for compensating for temperature related measurement errors in an optical arrangement, comprising at least one lens (2) is designed with a view to an economical and reliable as possible compensation for temperature related measurement errors without significant increased production expense, wherein a multicoloured beam (5) is passed through the optical arrangement (1, 1?), which is focussed at points at varying distances from the lens (2) as a result of the chromatic aberration of the lens (2), at least a part of the spectrum of the light beam (5) being at least partly reflected within the optical arrangement (1, 1?) and directed to a detector device (12) by means of which a determination of a spectrum is carried out, the temperature of the arrangement (1, 1?) is determined from the spectrum recorded by the detection device (12) and a compensation for temperature related measurement errors is carried out based on the temperature determined thus.

Abstract: A method and a monitoring unit for monitoring a tire of a vehicle record a first measured value of revolutions of a tire with a first sensor. In addition, a second measured value of the revolutions of a tire is recorded with a second sensor. Alternatively, a second measured value of a second, different measured variable of a tire can also be recorded. In a further step, the directly measured or derived measured values of a measured variable are compared and an error signal is generated if a determined deviation is greater than a predefinable tolerance value.

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 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 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 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.