Hamilton Bonaduz Ag

Hamilton Medical Ag

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Bernd Offenbeck

Dominik Novotni

Dirk Schönfuss

Christoph Schranz

Marco Giardina

Thomas Laubscher

Norbert Weber

Klaus Leckebusch

Philipp Arquint

Spela Willi

Louis Willi

Jonathan Schad

Willi Louis

A spectroscopic sensor assembly for detecting at least one predefined analyte constituent of a measurement fluid, the sensor assembly including a sensor housing; a radiation source; a detector device; a barrier assembly, which is transmissive for measurement radiation and is impermeable to the analyte constituent; a polymer matrix, which absorbs and releases the analyte constituent; a reflector assembly, which has a signal side facing the polymer matrix and facing the barrier assembly; the reflector assembly has a passage extending through the reflector assembly, through which passage the analyte constituent is exchanged between a measurement environment and the polymer matrix, which polymer matrix is located on the signal side of the reflector assembly; the reflector assembly reflects incident measurement radiation back toward the apparatus portion; the sensor assembly having a spacing means different from the polymer matrix that is designed to prevent the reflector assembly from approaching the barrier assembly.

Sensor assembly for spectroscopically detecting substances

A ventilation device for artificial ventilation, having: —a ventilation gas source; —a ventilation line arrangement; —a pressure-changing assembly for changing the pressure of the ventilation gas flowing in the ventilation line arrangement; —a control device; —an evaluation device for processing sensor signals; and —an O2 sensor assembly for determining an O2 concentration value representing the oxygen concentration of the ventilation gas flowing in the ventilation line arrangement, wherein the O2 sensor assembly outputs O2 sensor signals, which contain information regarding the O2 concentration value, to the evaluation device, and wherein the evaluation device is designed to determine, on the basis of the O2 sensor signals, an O2 change value representing a change in the O2 concentration value and, if the O2 change value satisfies a predefined condition, to infer degradation of the O2 sensor assembly and to output a signal.

Ventilation device designed to identify functional impairment of its O2 sensor assembly

A sensor arrangement includes a reaction subassembly having a housing and a detector subassembly. The housing is a layered component arrangement encompassing a luminophore-containing reaction laminate excitable, by irradiation with a first electromagnetic radiation of a first wavelength, to emit a second electromagnetic radiation of a second wavelength different from the first wavelength; and a temperature-detection laminate emitting an infrared radiation. The housing includes an opening for introducing a fluid, a reaction window and a temperature-sensing window. The reaction window transmits the first and second electromagnetic radiation, and the temperature-sensing window is penetrable by infrared radiation. The detector subassembly encompasses a radiation source emitting the first electromagnetic radiation, a radiation detector detecting the second electromagnetic radiation, and an infrared detector detecting, through the temperature detection window, the infrared radiation emitted from the temperature detection laminate. The reaction laminate and the temperature-detection laminate are embodied separately.

Device for the temperature-compensated optical detection of an oxygen content of a fluid

A sensor arrangement () encompasses a reaction subassembly () having a housing () and having a detector subassembly (), there being provided in the housing () a layered component arrangement () that encompasses: Provision is made according to the present invention that the reaction laminate () and the temperature-detection laminate () are embodied separately from one another.

A device for measuring a periodic signal includes: a first control unit for generating an electrical input signal (V) of the period T; a light source for generating an optical input signal directed to an object being measured from the electrical input signal (V); an optical receiver for detecting and converting the signal reflected from the object being measured, the signal corresponding to the optical input signal altered in terms of phase and amplitude, into an electrical measurement signal (V); and a plurality of measurement channels connected in parallel between the optical receiver and a second control unit, each measurement channel being connected in series to a switching element, a filter element, and an analog-to-digital converter, wherein the second control unit is suitable for evaluating the measurement signals from the plurality of measurement channels, and in which the electrical measurement signal (V) is applied to each of the plurality of measurement channels, the first control unit is connected to the plurality of switching elements and is suitable for actuating the switching elements for different time intervals in each case, and the analog-to-digital converters have a maximum sampling rate of less than 2&#xd7;1/T.

Apparatus and method for measuring a periodic signal

A device for measuring a periodic signal is disclosed. The device includes a light source for generating an optical input signal directed at an object being measured from an electrical input signal generated by a driver device on the basis of a first clock pulse, an optical receiver for detecting and converting the signal received, a central control and measuring device is designed to generate the first clock pulse for the driver device and to receive and process the electrical measuring signal, and a voltage-supply apparatus for supplying the driver device. The central control and measuring device are preferably designed to generate a second clock pulse for the voltage-supply apparatus and to filter the electrical measuring signal on the basis of the first and/or second clock pulse. The frequency of the second clock pulse is an even multiple of the frequency of the first clock pulse.

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Wuppertal, Germany

Bernd Offenbeck