Abstract: The invention relates to a method and a sensor device for detecting aerosols in the ambient air of a motor vehicle, wherein the probability of occurrence of aerosols in the ambient air of the vehicle is determined, wherein a control signal is sent to at least one radiation emitter when the determined probability of occurrence exceeds a defined probability value, wherein a radiation signal is emitted by the radiation emitter, wherein a possible response signal to the emitted radiation signal is captured by at least one radiation receiver, wherein the response signal is detected from at least two directions, wherein the electrical capacitance of a field around the vehicle is captured by at least one capacitive sensor, wherein the occurrence of aerosols is deduced upon detection of the response signal from two directions and detection of a change of capacitance in the surrounding area.

Abstract: In a method for calibrating at least one sensor, wherein the sensor includes at least one piezoelectric element with at least one electrode, and wherein at least one electrode is embodied as a measurement electrode, it is provided as essential to the invention that an electrical excitation voltage is applied to at least one further electrode of the piezoelectric element, embodied as a calibration electrode, to create a mechanical deformation of the piezoelectric element, that the voltage induced by the deformation of the piezoelectric element is captured with at least one measurement electrode, and that the applied excitation voltage and captured voltage are compared.

Abstract: The invention relates to a method and a device for determining particulate emissions in the driving operation of a vehicle, in particular of a motor vehicle. According to the invention, provision is made that the device has a sensor system and a control unit and that in driving operation the sensor system and the control unit jointly undertake the function of particulate matter sensors. Here, the sensor system senses driving operation values on the vehicle. From the sensed driving operation values and by means of correlations of driving operation values with particulate matter values determined and stored in advance in the control unit, the control unit estimates the particulate emissions from tyre abrasion of the vehicle. Finally, the invention relates to a vehicle with the device according to the invention.

Abstract: In a method for determining the surface temperature of a road on which a motor vehicle is travelling, the brightness of the ambient light around the motor vehicle is determined, that radiated light reflected from the road is captured, and that the measured values for brightness of the ambient light and the radiated light reflected from the road are included in the calculation. Also, a sensor arrangement for a motor vehicle for determining the surface temperature of a road on which the motor vehicle is travelling is used to carry out the method, in which at least one light sensor is assigned to the sensor arrangement for capturing the brightness of the ambient light around the motor vehicle, that at least one light sensor is assigned to the sensor arrangement for capturing the radiated light reflected from the road on which the vehicle is travelling.

Abstract: A sensor device for detecting moisture on a roadway of a vehicle includes a housing having at least one flat housing area. The housing is constructed as a resonant body and is provided for mounting in a wheel arch of the vehicle. At least one structure-borne sound sensor is arranged in the housing area of the housing and at least one connecting means is assigned to the housing for producing a connection between the housing and the wheel arch. The at least one connecting means is constructed to be vibration damping and constructed for receiving a decoupling of the sensor device and the wheel arch. The at least one connecting means is constructed for producing a connection between the housing and the wheel arch and the structure-borne sound sensor is configured to detect only structure-borne sound signals caused by impacting moisture droplets on the housing.

Abstract: In a method for capturing a condition of a surface of a road on which a vehicle is travelling, wherein at least one signal produced as a result of moisture thrown up from the road is captured by means of at least one sensor apparatus arranged on the vehicle, wherein the sensor apparatus includes at least one sensor device, and wherein the captured signal is evaluated by means of at least one evaluation device attached to the vehicle, it is provided as essential to the invention that at least one physical parameter of the thrown up moisture is captured by at least one sensor device, and that a conclusion is reached regarding the salt content of the moisture which reaches the sensor apparatus on the basis of at least one captured physical parameter, and a conclusion is reached regarding the condition of the road based on the salt content.

Abstract: The invention relates to a method and a device for determining particulate emissions in the driving operation of a vehicle, in particular of a motor vehicle. According to the invention, provision is made that the device has a sensor system and a control unit and that in driving operation the sensor system and the control unit jointly undertake the function of particulate matter sensors. Here, the sensor system senses driving operation values on the vehicle. From the sensed driving operation values and by means of correlations of driving operation values with particulate matter values determined and stored in advance in the control unit, the control unit estimates the particulate emissions from tyre abrasion of the vehicle. Finally, the invention relates to a vehicle with the device according to the invention.

Abstract: In a sensor device for detecting moisture on a roadway of a vehicle, particularly a motor vehicle, with at least one structure-borne sound sensor, with at least one circuit carrier, wherein the structure-borne sound sensor is connected in a signal-conducting manner to the circuit carrier, it is provided in a manner important for the invention that at least one structure-borne sound sensor is arranged in a housing, that the housing has at least one flat constructed housing area, that the structure-borne sound sensor is connected to the flat constructed housing area, so as to conduct structure-borne sound signals, and in that the housing is constructed as a resonant body, that the at least one circuit carrier is arranged in the housing, that the housing is provided for mounting in a wheel arch of a vehicle, that at least one connecting means for producing a connection between the housing and the wheel arch is assigned to the housing, and that the connecting means is constructed to be vibration damping, at least

Abstract: In a method for calibrating at least one sensor having at least one signal-conducting connection to at least one signal converter, a sensor characteristic is recorded by the determination of at least one measurand at at least two different temperatures, the extent of the influence of a further value influencing the sensor is determined from the sensor characteristic by means of a functional relation, the extent of the influence of the further influencing value is considered in the calibration and the influence of the further influencing value is balanced in the calibration. As a result, the influence of a further influencing value acting on the sensor is corrected. The sensor can be a structure borne sound sensor which may have a membrane with a sensor element arranged on the membrane. Vibrations on the membrane can be captured by the sensor element, such as a piezoresistive element.

Abstract: In a method for capturing a condition of a surface of a road on which a vehicle is travelling, wherein at least one signal produced as a result of moisture thrown up from the road is captured by means of at least one sensor apparatus arranged on the vehicle, wherein the sensor apparatus includes at least one sensor device, and wherein the captured signal is evaluated by means of at least one evaluation device attached to the vehicle, it is provided as essential to the invention that at least one physical parameter of the thrown up moisture is captured by at least one sensor device, and that a conclusion is reached regarding the salt content of the moisture which reaches the sensor apparatus on the basis of at least one captured physical parameter, and a conclusion is reached regarding the condition of the road based on the salt content.

Abstract: In a method for calibrating at least one sensor, wherein the sensor includes at least one piezoelectric element with at least one electrode, and wherein at least one electrode is embodied as a measurement electrode, it is provided as essential to the invention that an electrical excitation voltage is applied to at least one further electrode of the piezoelectric element, embodied as a calibration electrode, to create a mechanical deformation of the piezoelectric element, that the voltage induced by the deformation of the piezoelectric element is captured with at least one measurement electrode, and that the applied excitation voltage and captured voltage are compared.

Abstract: In a method for calibrating at least one sensor having at least one signal-conducting connection to at least one signal converter, a sensor characteristic is recorded by the determination of at least one measurand at at least two different temperatures, the extent of the influence of a further value influencing the sensor is determined from the sensor characteristic by means of a functional relation, the extent of the influence of the further influencing value is considered in the calibration and the influence of the further influencing value is balanced in the calibration. As a result, the influence of a further influencing value acting on the sensor is corrected. The sensor can be a structure borne sound sensor which may have a membrane with a sensor element arranged on the membrane. Vibrations on the membrane can be captured by the sensor element, such as a piezoresistive element.

Abstract: A device for determining the filling level of a fluid in a container, in particular in the oil reservoir of a vehicle, is provided. The device has at least one sensor element, at least one control unit, at least one energy source, and at least one transmitting unit for wireless transmission of measured data. The at least one energy source is a thermal generator, in particular a thermocouple. The device has at least one energy storage device. The thermal generator is configured for measuring a time-dependent temperature gradient, the thermal generator has a signal-conducting connection to the control unit, and the control unit is configured for placing the device from an energy-saving state into a ready-to-measure state. A method for determining the filling level of a fluid in a container using the device, and a vehicle with the device, in particular a motor vehicle, are also provided.

Abstract: A device for detecting a structure-borne sound signal, in particular for detecting a structure-borne sound signal caused by an event of damage on a component to be monitored, having at least one structure-borne sound sensor, at least one signal-conducting connection of the structure-borne sound sensor to an evaluation device, and a protective body. The structure-borne sound sensor has a structure-borne sound-conducting connection to the protective body and the protective body has a structure-borne sound-conducting connection to the component to be monitored.

Abstract: In a method for calibrating at least one sensor, in particular a pressure sensor, having at least one signal-conducting connection to at least one signal converter, a sensor characteristic is recorded by the determination of at least one measurand at at least two different temperatures, the extent of the influence of a further value influencing the sensor is determined from the sensor characteristic by means of a functional relation, the extent of the influence of the further influencing value is considered in the calibration and the influence of the further influencing value is balanced in the calibration. As a result, the influence of a further influencing value acting on the sensor is corrected.

Abstract: In a sensor device for determining ambient conditions of a vehicle, in particular a motor vehicle, comprising at least one transmitter for emitting electromagnetic radiation, in particular infrared radiation, comprising at least three receivers for receiving electromagnetic radiation, in particular infrared radiation, wherein at least one transmitter is assigned to at least one receiver for determining precipitation on at least one glass surface, in particular the windscreen of the motor vehicle, and wherein at least three receivers are aligned for receiving electromagnetic radiation from different angular regions, it is provided as essential to the invention that the spatial receiving regions of at least one first and at least one second receiver are aligned substantially horizontally, that the spatial receiving region of at least one third receiver is aligned substantially upwards.

Abstract: In a sensor device for detecting moisture on a roadway of a vehicle, particularly a motor vehicle, with at least one structure-borne sound sensor, with at least one circuit carrier, wherein the structure-borne sound sensor is connected in a signal-conducting manner to the circuit carrier, it is provided in a manner important for the invention that at least one structure-borne sound sensor is arranged in a housing, that the housing has at least one flat constructed housing area, that the structure-borne sound sensor is connected to the flat constructed housing area, so as to conduct structure-borne sound signals, and in that the housing is constructed as a resonant body, that the at least one circuit carrier is arranged in the housing, that the housing is provided for mounting in a wheel arch of a vehicle, that at least one connecting means for producing a connection between the housing and the wheel arch is assigned to the housing, and that the connecting means is constructed to be vibration damping, at least

Abstract: In a sensor device for determining ambient conditions of a vehicle, in particular a motor vehicle, comprising at least one transmitter for emitting electromagnetic radiation, in particular infrared radiation, comprising at least three receivers for receiving electromagnetic radiation, in particular infrared radiation, wherein at least one transmitter is assigned to at least one receiver for determining precipitation on at least one glass surface, in particular the windscreen of the motor vehicle, and wherein at least three receivers are aligned for receiving electromagnetic radiation from different angular regions, it is provided as essential to the invention that the spatial receiving regions of at least one first and at least one second receiver are aligned substantially horizontally, that the spatial receiving region of at least one third receiver is aligned substantially upwards.

Abstract: In a method for calibrating at least one sensor, in particular a pressure sensor, having at least one signal-conducting connection to at least one signal converter, a sensor characteristic is recorded by the determination of at least one measurand at at least two different temperatures, the extent of the influence of a further value influencing the sensor is determined from the sensor characteristic by means of a functional relation, the extent of the influence of the further influencing value is considered in the calibration and the influence of the further influencing value is balanced in the calibration. As a result, the influence of a further influencing value acting on the sensor is corrected.

Abstract: A device for detecting a structure-borne sound signal, in particular for detecting a structure-borne sound signal caused by an event of damage on a component to be monitored, having at least one structure-borne sound sensor, at least one signal-conducting connection of the structure-borne sound sensor to an evaluation device, and a protective body. The structure-borne sound sensor has a structure-borne sound-conducting connection to the protective body and the protective body has a structure-borne sound-conducting connection to the component to be monitored.