Abstract: A radar system for motor vehicles, with a plurality of transmit/receive units arranged on separate installation supports for installation at various locations in the motor vehicle, an evaluation system for evaluating the radar signals received on a plurality of channels in a plurality of processing steps, a first processing step delivering a digital time signal for each channel, which digital time signal represents the received radar signal, and a final processing step delivering as the result location data for individual radar objects and at least the final processing step being implemented for the plurality of transmit/receive units in a central evaluation unit with which the transmit/receive units in each case communicate via a raw data interface. The each of raw data interfaces has a serializer, which is configured to transfer raw data from the plurality of channels of the transmit/receive unit in question serially to the central evaluation unit.

Abstract: A mouthpiece a device for measuring a parameter of respiratory air. The mouthpiece including an end edge of a wall of the mouthpiece, and the end edge is configured to delimit an opening for blowing respiratory air into the mouthpiece. An opening surface of the opening extends transversely with respect to a flow axis of respiratory air blown into the mouthpiece. A contour of the opening forms a D shape or a lens shape, seen in the direction of the flow axis. The opening is delimited by a first opening portion and by a second opening portion adjoining the first opening portion.

Abstract: A mouthpiece a device for measuring a parameter of respiratory air. The mouthpiece including an end edge of a wall of the mouthpiece, and the end edge is configured to delimit an opening for blowing respiratory air into the mouthpiece. An opening surface of the opening extends transversely with respect to a flow axis of respiratory air blown into the mouthpiece. A contour of the opening forms a D shape or a lens shape, seen in the direction of the flow axis. The opening is delimited by a first opening portion and by a second opening portion adjoining the first opening portion.

Abstract: A device for analyzing exhaled air comprises a gas sensor unit. The device is configured for measuring nitrogen oxides in the exhaled air. The device includes a main gas path in order to guide air in the device. At least one measuring gas path and at least one flushing gas path branch off from the main gas path.