Abstract: A measuring device for determining a gas concentration includes a gas-sensitive element, a sensing device, a stimulation unit, and a processing unit. The gas-sensitive element is configured to absorb a gas. The sensing device is configured to determine a parameter of the gas-sensitive element in a predetermined time period, where the parameter depends on an absorbed quantity of the gas. The stimulation unit is configured to stimulate the gas-sensitive element and accelerate desorption of the gas out of the gas-sensitive element. The processing unit is configured to determine a rate of change of the parameter, to control the stimulation such that a concentration of the gas in the gas-sensitive element lies outside of an equilibrium state, and to determine the gas concentration based on the rate of change.

Abstract: An outer part for a device which is attachable thereto as a housing and/or an attachment part, a first reflective surface and a second reflective surface being formed on the outer part so that at least one signal emitted by an optical and/or acoustic source is directly or indirectly deflectable onto at least one detector surface of an optical and/or acoustic detector, an optical path being configured as a cavern or continuous recess in the outer part or as a depression of a boundary surface of the outer part, the optical path having at least one opening via which at least one substance is transferable into the optical path, and the at least one signal being deflectable into the optical path to the second reflective surface which is formed at a second end of the optical path with the first reflective surface at a first end of the optical path.

Abstract: A microelectrochemical sensor includes an energy supply unit and a sensor unit. The energy supply unit is configured to generate electrical energy using a reference fluid. The sensor unit is configured to determine a concentration difference of a chemical species between a measuring fluid and the reference fluid. The measuring fluid has an unknown concentration of the species, and the reference fluid has a known concentration of the species. The sensor unit is electrically connected to the energy supply unit and is designed to determine the concentration difference using the electrical energy from the energy supply unit.

Abstract: A device and a method for gas or particle measurement in a portable electronic device. The portable device includes a housing which, with the exception of an overflow opening, has an almost gas- and air-tight design. A display unit, an operating unit, a transceiver unit, and optionally a power supply unit may be integrated into the housing in particular. Furthermore, the housing may also include the required electronics. By deflecting a movable outer wall of the housing with the aid of an actuator, the volume of the inner space of the housing may be increased or reduced. A gas exchange between the inner space and the space outside of the housing may thereupon take place via the overflow opening in the housing, and a possible substance, in particular, a predetermined gaseous component or a particle concentration may be analyzed in a gas flow during this gas exchange.

Abstract: A rotary feedthrough for a compressed air supply system is provided between a stator and a rotor rotating relative to this stator. A compressed air channel disposed in the stator is connected to a compressed air line and leads into an annular chamber formed in the rotor, from which at least one working channel leading to a consumer proceeds. The stator is connected in the region of the rotary feedthrough to a control line. A moment of friction occurring in the region of the rotary feedthrough resulting in premature wear is reduced by providing a switchable non-return valve in the annular chamber. Blocking elements which extend within the annular chamber concentrically to the rotational axis of the rotor are moveable into an open position by an actuating element, which is displaced from the stator in the direction of the blocking elements.

Abstract: A drive system for a self-propelled harvesting machine includes a drive engine, designed as an internal combustion engine, a transfer gearbox driven by the drive engine that includes a first driven pulley which is disposed on a drive shaft for driving at least one drive pulley of a working mechanism using a first belt, and at least one hydraulic pump for driving a further working mechanism. A second output pulley is assigned to the transfer gearbox and drives the at least one hydraulic pump using a second belt.

Abstract: The invention relates to a sports- and general pole element. The pole element includes components for an arrangement for operating a handheld geophysical locating device with at least one sensor, a power supply, an operating unit, and an interface for wireless data transmissions, wherein the components are arranged concealed in a body of the sports- or general pole element and wireless transmission of locating data is provided through the interface to a mobile evaluation- and display unit.

Abstract: A semiconductor substrate-based system for an RFID device, in particular an RFID transponder, having a semiconductor substrate and an electronic circuit system which is structured on the semiconductor substrate is provided. The semiconductor substrate-based system also has a thin-layer battery, likewise structured on the semiconductor substrate, for supplying power to the RFID device. Moreover, an RFID device having a corresponding semiconductor substrate-based system, and a method for manufacturing a corresponding semiconductor substrate-based system are provided.

Abstract: A sensor device includes a sensor element configured to detect a measurement value based at least in part upon a physical variable, and a support element configured to support the sensor element. The support element has at least one connection region which is located in a section of the support element, and which is configured to connect the section of the support element to a section of the sensor element such that the sensor element is mounted so as to be movable with respect to the support element.

Abstract: A device for detecting a parameter of a gas includes a body defining at least one cavity, at least one membrane, and at least one pressure measuring element. The cavity is configured to receive a gas from an outer area. The at least one membrane is configured to separate the cavity from the outer area. A first side of the at least one membrane facing toward the outer area includes a first layer of an electrically conductive material, and a second side of the at least one membrane facing toward the cavity and opposite the first side includes a second layer of the electrically conductive material. At least one portion of the at least one membrane includes an ion-conductive material. The at least one pressure measuring element is positioned on the at least one membrane, and is configured to detect a pressure of the gas in the cavity.

Abstract: A drive system for a self-propelled harvesting machine includes a drive engine designed as an internal combustion engine, a first driven pulley driven by the drive engine that at least one drive pulley of a working mechanism via a drive belt. The drive system also includes at least one first and one second hydraulic unit. The drive belt is drivably connected to a pulley that is enclosed in sections by housing elements. The housing elements are disposed opposite one another and are fixed relative to the pulley. The first hydraulic unit and the second hydraulic unit are disposed on the housing elements and, the first hydraulic unit and the second hydraulic unit are drivably connected to a shaft that extends through the pulley.

Abstract: A method for determining the carbon dioxide content in ambient air includes providing a mobile data transmission device which comprises a sensor configured to detect carbon dioxide in ambient air. The method further includes calibrating the sensor. Calibrating the sensor includes measuring the carbon dioxide content of the ambient air in a reference situation. The method also includes measuring the carbon dioxide content of the ambient air using the sensor.

Abstract: A microelectrochemical sensor includes a carrier material composed of a semiconductor substrate, and includes a chemosensitive sensor element. The chemosensitive sensor element is positioned in a first partial region of the carrier material. A heating element is positioned in a region of the chemosensitive sensor element and is configured to regulate a temperature of the chemosensitive sensor element. A microelectronic unit is positioned in a second partial region of the carrier material, and is connected to the chemosensitive sensor element and the heating element via conductor tracks integrated into the carrier material. The microelectronic unit is configured to operate the heating element and the sensor element.

Abstract: An exhaust gas guide element for conducting at least a portion of an exhaust gas to a sensor for a vehicle. The exhaust gas guide element has a greater extent in a direction of a longitudinal axis than in a direction of a transverse axis, and is gas-permeable along the direction of the longitudinal axis. One end of the gas guide element along the direction of the longitudinal axis is configured as a receiving region, and the opposite end is configured as a measuring region. A sensor can be positioned in the measuring region, and a gas receiving element is positioned in the receiving region.

Abstract: A sensor device for sensing a gas includes a sensing region, and a readout region that is electrically and mechanically connected to the sensing region by way of a connecting web. The readout region, the sensing region, and the connecting web are formed from a substrate, and are isolated from the substrate by a clearance cutout. The sensing region has an ion-conducting region configured to provide a measuring signal dependent on the gas. The readout region (is configured to read out the measuring signal.

Abstract: A method for determining a tube current profile for the recording of at least one X-ray image of body region of a patient with an X-ray image recording device, a corresponding computer program, a machine-readable data carrier and an X-ray image recording device are disclosed. The method includes acquisition of an image recorded via an optical sensor wherein the image has a field of view including at least the body region of the patient to be depicted by way of an X-ray image; determination of at least one piece of patient-specific, body-related information for the patient from the image; determination of an X-ray attenuation distribution of the patient at least for the body region to be depicted by way of an X-ray image with reference to the at least one piece of patient-specific, body-related information; and determination of the tube current profile with reference to the X-ray attenuation distribution determined.

Abstract: A microelectrochemical sensor having a diaphragm, a web, a first and a second electrode. The diaphragm is permeable to ions of a chemical species, is arranged transversely with respect to a cutout in a base body, and closes off the cutout in a fluid-tight fashion. The web is arranged on a first side of the diaphragm between a first partial surface and a second partial surface, and is designed to adjust a temperature of the diaphragm to an operating temperature using electrical energy. The first electrode has a first partial electrode and a second partial electrode, is permeable to fluid, and is arranged on the first side of the diaphragm. The web prevents electrical contact between the first electrode and the diaphragm. The second electrode has a third partial electrode and a fourth partial electrode, is also permeable to fluid, and is arranged on a second side of the diaphragm.

Abstract: A device for manipulating an emission characteristic of a light-emitting diode includes an optical element configured to be movably arranged between a first position and at least one additional position relative to the light-emitting diode. The optical element is configured to bring about a first light distribution of the light emitted by the light-emitting diode if the optical element is arranged in the first position. The optical element is further configured to bring about a further light distribution of the light emitted by the light-emitting diode if the optical element is arranged in the at least one additional position. The device further includes at least one micromechanical actuator configured to move the optical elements between the first and the at least one additional position in order to manipulate the emission characteristic.

Abstract: A sensor array and a method are provided for operating a sensor array with a first sensor and a second sensor, the second sensor being designed for an operation at an ambient temperature, the first sensor representing a heated sensor, which is designed for being operated at an operating temperature that is above the ambient temperature, the first and the second sensor being connected to each other via a carrier, the carrier bringing about thermal coupling between the first and the second sensor, the first sensor being heated to the operating temperature during a first phase, and a measurement being carried out by the first sensor during the first phase, the heating being switched off or at least being reduced in a second phase, and a measurement being carried out by the second sensor during the second phase, an increased temperature of the second sensor as a result of the heating during the first phase being taken into account when evaluating the measurement of the second sensor.

Abstract: The invention relates to a sports- and general pole element, comprising components for an arrangement for operating a handheld geophysical locating device with at least one sensor, a power supply, an operating unit, and an interface for wireless data transmissions, wherein the components are arranged concealed in a body of the sports- or general pole element and wireless transmission of locating data is provided through the interface to a mobile evaluation- and display unit.