Abstract: The invention relates to a sensor (1) for detecting environmental parameters, comprising a transmission device (3) by means of which an output signal of the sensor (1) can be emitted, and a correction device (4) by means of which the sensor measurement value can be corrected for the emission of a correct output signal, which sensor is to be easy to produce, and wherein only a small output is to be required for a method for calibrating a sensor of this type. According to the invention, the sensor is calibrated by means of the correction device thereof, on the basis of cloud-based data.

Abstract: An electrostatic sensor system is carried on two relatively movable objects between which a person can be disposed for determining the presence or absence of the person between the objects. One electrode on is one of the objects and first and second electrodes are on the other of the objects. A controller or control means applies an electrical charge to the one electrode on one object or the first and second electrodes on the other object, determines a coupling factor between the one electrode on the one object and the first electrode arranged on the other object and a coupling factor between the electrode arranged on one object and the second electrode arranged on the other object can be detected, and compares the two coupling factors with one another.

Abstract: A particle mass concentration in an aerosol volume can be detected by an optical particle sensor. In order to ensure that different degrees of contamination of the optical particle sensor can be detected by the sensor and can be taken into consideration, the optical particle sensor identifies individual particles at low particle concentrations of up to 1000 particle s/cm3.

Abstract: A sensor arrangement for determining the CO2 concentration in an interior space has an NDIR sensor unit that can determine the number of CO2 molecules on an optical measuring section and therefrom the CO2 concentration in an interior space. The sensor arrangement further has an evaluation unit that can calculate the air pressure from measurement values of the NDIR sensor unit and that can carry out an air-pressure compensation on the basis of the value calculated for the air pressure or of an air pressure correction value calculated therefrom for the measurement value of the CO2 concentration determined by the NDIR sensor unit.

Abstract: An ionizer for charging air in a motor vehicle with negative ions. The ionizer has an emitter with a pair of spaced electrodes, a high-voltage power supply, means connecting the power supply to the electrodes to apply a voltage differential across them and thereby ionize gas molecules adjacent the electrodes, and a sensor between the power supply and the electrodes for measuring current passing between the electrodes.

Abstract: A gas-sensor arrangement for measuring a target-gas concentration has first and second NDIR emitters to one side of a space containing the target gas and projecting respective first and second beams of infrared light through the space. An it receiver on the other side of the space and irradiated by the first and second beams for emitting first and second outputs respectively corresponding to the first and second beams and together forming a receiver signal corresponding to radiation received from the first and second beams. One of the emitters is optically farther from the receiver than the other of the emitters. A filter between the receiver and the space is traversed by the first and second beams and permeable only to radiation of a wavelength range corresponding to the target gas. A controller connected to the radiation receiver calculates the target-gas concentration on the basis of the receiver signal.

Abstract: A system for passing electrical signals through a living body has a transmitter on one side of a body for feeding thereto a predetermined electrical signal on at least two separate channels on respective different frequencies and a receiver on the other side of the body for receiving the signal on each of the channels. An evaluating unit connected to the receiver evaluates the received signals and selecting from them one signal for further processing.

Abstract: An NDIR gas-sensor arrangement for measuring a target-gas concentration comprises a variable-power infrared-radiation emitter that can project radiant energy from one side of a space containing the target gas and through the space to the other side thereof, a infrared-radiation receiver on the other side of the space and positioned to be irradiated by the radiant energy projected by the emitter through the space for emitting a signal corresponding to radiation received, and a filter between the receiver and the space and permeable only to radiation of a wavelength range that corresponds to the target gas. A controller connected to the radiation receiver calculates the target-gas concentration on the basis of the signal from the receiver to the controller.

Abstract: A measuring system for determining the distance to a magnetic alternating field source, with a magnetic sensor arrangement, by means of which a characteristic magnetic alternating field signal of the magnetic alternating field source can be recorded, and an evaluation device connected with the magnetic sensor arrangement and by means of which the characteristic magnetic alternating field signals of the magnetic alternating field source recorded by the magnetic sensor arrangement can be evaluated and converted into the distance between the magnetic alternating field source on the one hand and the magnetic sensor arrangement on the other.

Abstract: A receiver belongs to a control device of an operating element in a motor vehicle, which receiver is a component part of the operating element and into which signals are able to be inputted by a person. In order to be able to establish with great reliability a threshold for the decision ‘signal valid/signal invalid”, it is proposed defined in the invention that the receiver of the operating element has a first coupling-in element and a second coupling-in element, which are arranged at a defined distance from one another on an evaluation axis.

Abstract: A voice-control system for motor vehicles has a plurality of spaced microphones emitting respective microphone signals, and an evaluation unit connected to the microphones. This unit serves for assembling correlation pairs from the signals of two of the microphones, calculating a correlation coefficient for each correlation pair, detecting an energy value for each microphone, detecting a respective delay time of a voice signal between a voice signal source and the each of the microphones, and selecting in dependence on current correlation coefficients of the correlation pairs, on the current energy values of the microphones, and on the current delay time of the voice signal to the microphones, that microphone whose signal is optimal as a basis for the operation of the voice-control system.

Abstract: This object is attained by the combination of a motor-vehicle safety belt formed as a flexible longitudinally extending band and formed with a longitudinally extending and laterally substantially closed passage with an insert fittable into the passage and comprised of a flexible and elongated support strip and at least one electrical or electronic element usable by a motor-vehicle passenger employing the belt secured to the strip.

Abstract: The invention relates to an operating device (1) with an adjustable lever (2) and a sensor mechanism (8), comprising a transmitter coil (5), which may be energized with an alternating current by means of an alternating current supply (7) and a receiver coil arrangement (9). According to the invention, such an operating device may be designed such as to be reliably useful even with intense interference with a construction as technically simple as possible without complex screening measures, wherein the frequency of the alternating current energizing the transmitter coil (5) and the pass frequency of a receiver filter (13) in the receiver coil arrangement (9) are synchronously changed according to a preset program by means of a control unit (14), such that, by means of the operating device (1) and the method carried out therewith, a change to a frequency which is interference or interference signal free can be continuously carried out.

Abstract: An operating device comprises a transmitter arrangement (1) and a receiver arrangement (2), which may be moved longitudinally, transversally and vertically with relation to the transmitter arrangement (1) and by means of which different signals can be generated depending on the position of the transmitter arrangement (1). According to the invention, said operating device may be provided with additional functionality with a construction of the minimum technical complexity, wherein the transmitter arrangement (1) may be rotated in relation to the receiver arrangement (2) and is designed such that, at differing rotational angles, signals corresponding to the given rotational angle may be generated in the receiver device (2).

Abstract: A triggering device for a horn system of a motor vehicle is integrated in a steering wheel (2) of the motor vehicle. In order to prevent a relative movement of components associated with the steering wheel in relation to each other, but still enable a secure and reliable actuation of the triggering device of the horn system while at the same time allowing an optically compact and appealing design of the steering wheel (2), the invention proposes for the triggering device to comprise a first triggering unit (7), with which a parameter inherent in intended activation of the horn is detected. When such a parameter is detected, a first triggering signal can be emitted. The invention comprises a second triggering unit (11), with which a further parameter inherent in an intended activation of the horn is detected and a second triggering signal can be emitted.

Abstract: A safety belt has an inner face turned toward the body of a user and an outer face turned away from the user. A plurality of sensor are mounted on the outer face, and the inner face is devoid of sensors. A selector connected to the sensors determines which sensor is best positioned for signal quality and for using the signal therefrom.

Abstract: A chemical sensor has a substrate, a first metallization plane on the substrate, an electrode structure formed in the first metallization plane, a passivation layer applied to the first metallization plane and formed with contact holes, a sensitive ceramic layer on the passivation layer and in the contact holes, and a bond-promoting layer configured as a second metallization plane and between the passivation layer and the ceramic layer.

Abstract: Disclosed is a gas measuring device which comprises compensation of disturbances and offers high accuracy of measurement immediately after being activated. Said gas measuring device is provided with a gas sensor (1) for generating a measuring signal (S1) that depends on the gas concentration and can have a spurious component while a high-pass filter (13) having an adjustable limiting frequency is mounted downstream of said gas sensor (1). The limiting frequency can be predefined according to the spurious component by means of a selection unit.

Abstract: In a microphone mounting for a hands-free system in automotive vehicles, the microphone is mounted on the seat belt. In one embodiment the microphone is seated in a sheath which is fastened to the upper belt deflection and through which the belt can freely pass. The sheath consists of two mutually displaceable flat sleeves, of which the lower one accommodates the microphone whose position relative to the passenger's mouth can be adjusted in an optimum way by a mutual displacement of the two sleeves. In another embodiment the microphone is provided at its side facing the belt with contacts that are brought into electrical contact with conducting wires integrated into the belt so as to be connected to the telephone circuit.

Abstract: The invention relates to a sensor assembly for measuring a gas concentration, in particular CO, H2, NOx and/or hydrocarbons. The aim of the invention is to permit an accurate measurement by relatively simple means, ii particular at low cost. To achieve this, the sensor assembly is provided with an insulation material that is applied to the substrate (2) and comprises one or more insulation layers (4, 6, 8, 10), at least one first electrode structure (12, 13) that is provided in or on the insulation material, at least one second electrode structure (14, 15) that is provided in or on the insulation material and is placed at a vertical distance from the first electrode structure, a gas-sensitive layer (16), which borders the first electrode structure (12, 13) and the second electrode structure (14, 15) and a heating conductor structure (7) that is located in the insulation material (4, 6, 8, 10).