Abstract: An air conditioning system for a vehicle and a method for operating the air conditioning system which at least has: an air conditioner having a fan, a recirculating air flap for setting a recirculating air operation or an external air operation, a gas sensor for measuring a gas concentration, in particular a CO2 concentration in a vehicle cabin, and outputting a measuring signal, and a control unit for receiving the measuring signal of the gas sensor, for setting a recirculating air position or an external air position of the recirculating air flap and for controlling the gas sensor, the control unit switching the gas sensor into different operating modes in recirculating air operation than in external air operation.

Abstract: An air conditioning system for a vehicle and a method for operating the air conditioning system are disclosed, which at least has: an air conditioner (3) having a fan, a recirculating air flap (4) for setting a recirculating air operation or an external air operation, a gas sensor (5) for measuring a gas concentration, in particular a CO2 concentration in a vehicle cabin, and outputting a measuring signal (S4), and a control unit (2) for receiving the measuring signal (S4) of the gas sensor (5), for setting a recirculating air position or an external air position of the recirculating air flap (4) and for controlling the gas sensor (5), the control unit (2) switching the gas sensor (5) into different operating modes in recirculating air operation than in external air operation.

Abstract: The invention relates to a device for controlling a ventilation device for a motor vehicle interior (36), comprising at least one air quality sensor (46) for generating an air quality signal of the air supplied to the air quality sensor (46), an actuator for adjusting an air damper (20a, 20b) of the ventilation device as a function of the air quality signal, and a ventilator (14) for transporting the air through the ventilation device into the motor vehicle interior (36). The air quality sensor (46) and the ventilator (14) form a structural unit (44).

Abstract: A device and a method for measuring at least one parameter of particles in a fluid, the device having a radiation source and a radiation sensor, the device having a fluid region that is in contact with the fluid; the radiation source being provided for the emission of measuring radiation according to a first direction onto the fluid region, the radiation sensor being provided for the detection of a measuring radiation reflected away from the fluid region in a second direction; furthermore, the radiation sensor having a plurality of sensor elements; and the spectral sensitivity of different sensor elements being developed differently for a wavelength-sensitive detection of the reflected measuring radiation.

Abstract: The invention relates to a photometric gas sensor containing at least an infrared radiation source; a first reflector for deflecting to a second reflector an infrared radiation coming from an infrared radiation source; a second reflector for deflecting to an infrared detector the radiation coming from the first reflector; and an infrared detector.

Abstract: A device and a method for measuring at least one parameter of particles in a fluid, the device having a radiation source and a radiation sensor, the device having a fluid region that is in contact with the fluid; the radiation source being provided for the emission of measuring radiation according to a first direction onto the fluid region, the radiation sensor being provided for the detection of a measuring radiation reflected away from the fluid region in a second direction; furthermore, the radiation sensor having a plurality of sensor elements; and the spectral sensitivity of different sensor elements being developed differently for a wavelength-sensitive detection of the reflected measuring radiation.

Abstract: An air-conditioning system in a vehicle comprises an air-temperature sensor for measuring the interior temperature, an air-conditioning unit and a regulating and control unit for regulating the air-conditioning unit. Moreover, a moisture sensor for measuring the air humidity and a window-temperature sensing device for determining the window temperature of a vehicle window are provided. The air-conditioning unit is actuated in the case where the difference between the window temperature and the dew-point temperature undershoots a limiting value.

Abstract: The invention concerns an artificial heart driving device having at least one blood chamber which is disposed in a pump housing and draws in and expels blood cyclically by means of a plurality of pressure plates which can be driven by a motor. The motor is directly connected to a drive gear or cam component. A movement component actuating the plurality of pressure plates engages with the drive gear or cam component and performs a reciprocating movement as the drive gear or cam component rotates.