Abstract: In a method for detecting rain on a windshield, whose degree of wetting is determined with at least one sensor value, it is provided that the sensor value is determined piezoelectrically, wherein vibrations on the windshield are detected, which change depending on the degree of wetting or raindrops hitting the windshield. As a result, the entire windshield serves as a detection surface, thereby yielding a high accuracy.

Abstract: In a method for detecting rain on a windshield, whose degree of wetting is determined with at least one sensor value, it is provided that the sensor value is determined piezoelectrically, wherein vibrations on the windshield are detected, which change depending on the degree of wetting or raindrops hitting the windshield. As a result, the entire windshield serves as a detection surface, thereby yielding a high accuracy.

Abstract: The invention relates to a sensor arrangement for detecting ambient conditions, in particular for a motor vehicle, with at least one carrier plate and optical elements arranged on this carrier plate, wherein several of the optical elements are arranged around a shared central region on the carrier plate, and at least two of the optical elements arranged around the central region exhibit primary action axes. These primary action axes are adjusted at a predetermined angle relative to the carrier plate, wherein the primary action axes are directed toward the shared central region. Additional sensors arranged on the carrier plate include a rain sensor, a solar sensor as well as various light sensors, which preferably are arranged on receiving surfaces of the carrier plate.

Abstract: The invention relates to a method for detecting the visibility outside of a motor vehicle by means of at least two light sensors, in the case of which the intensity of the light reflection of the driving light emitted in the direction of travel is detected by means of a first light sensor, which is oriented in the direction of travel. The first light sensor thereby transmits at least a first evaluation signal to a control unit for further processing at least as a function of the recorded intensity of the light reflection. The ambient light is detected by means of a second light sensor and a second evaluation signal is transmitted to the control unit as a function of the intensity of the ambient light. The control unit correlates the evaluation signals of both light sensors and the light intensity threshold value is determined on the basis thereof.

Abstract: The invention relates to a sensor arrangement for detecting ambient conditions, in particular for a motor vehicle, with at least one carrier plate and optical elements arranged on this carrier plate, wherein several of the optical elements are arranged around a shared central region on the carrier plate, and at least two of the optical elements arranged around the central region exhibit primary action axes. These primary action axes are adjusted at a predetermined angle relative to the carrier plate, wherein the primary action axes are directed toward the shared central region. Additional sensors arranged on the carrier plate include a rain sensor, a solar sensor as well as various light sensors, which preferably are arranged on receiving surfaces of the carrier plate.

Abstract: The invention relates to a device for acquiring predetermined state variables inside a room, in particular in the interior of a motor vehicle, with at least one temperature sensor and with a humidity sensor, at least regions of which are enclosed by a housing, wherein a first temperature sensor exhibits at least one contact surface for abutting against a perimeter surface bordering the room, and that at least one second temperature sensor is provided inside the housing for acquiring the room temperature. The contact surface is thereby a surface piece of a printed circuit board section of a printed circuit board, which encompasses elastic characteristics, wherein the printed circuit board section encompasses a plurality of surface pieces, which are angled relative to one another, and the temperature sensors are arranged at different surface pieces.

Abstract: An improved method and assembly, wherein the method generally includes the steps of providing a coated or uncoated sensor element having an exposed sensing surface; attaching the sensor element to a platform so that the exposed sensing surface is spaced from the platform; and optionally applying a protective layer over the platform while maintaining the sensing surface as exposed. The assembly includes a resonator having a free portion with a sensing surface is incorporated onto a platform, components of the sensor are physically shielded from harsh operating conditions, the requisite space is maintained between the free portion of the resonator and the platform, and the sensing surface of the resonator remains exposed for sensing.