Abstract: A gas sensor having a heater, a receiver, and a space arranged between the heater and the receiver, is described, the heater being configured to generate a thermoacoustic sound wave propagating through the space by using a stimulation signal. The receiver is in this case configured to receive the thermoacoustic sound wave that has propagated through the space and to convert it into a reception signal that has a time-of-flight-dependent shift with respect to the stimulation signal and therefore information relating to the gas concentration in the space.

Abstract: A tire-pressure monitoring system (TPMS) sensor module comprises a pressure sensor, which is configured to measure an internal air pressure of a tire and to generate tire pressure information, an additional, optional sensor, a transmitting/receiving device, a microcontroller unit which is configured to operate the TPMS sensor module in one of three or more different operating modes, wherein a first operating mode includes an inactive standby state, a second operating mode includes a measurement of a physical parameter using the pressure sensor and/or the additional sensor and reading the pressure sensor and/or the additional sensor using the microcontroller unit, and a third operating mode, and wherein in the second operating mode the microcontroller unit is configured to initiate a changeover from the second operating mode to the third operating mode when reading out a specified measurement event.

Abstract: A semiconductor device comprises a semiconductor chip and an electrically conductive chip carrier, wherein the semiconductor chip is mounted on the chip carrier. The semiconductor device furthermore comprises an electrically conductive extension element mechanically connected to the chip carrier, wherein the extension element and the chip carrier are formed as an integral single piece. A part of the chip carrier which has the extension element is configured as an antenna.

Abstract: A method includes determining, by a first radio transceiver of an access-restricted environment, of first direction information of a first radio signal transmitted between the first radio transceiver and a wireless device. The method further includes determining, by a second radio transceiver of the access-restricted environment, of second direction information of a second radio signal transmitted between the second radio transceiver and the wireless device. The method further includes receiving, by the access-restricted environment, of angle information determined by an electronic key associated with the access-restricted environment. The method further includes determining, based on the first direction information, the second direction information and the angle information, whether the wireless device is a relay device or the electronic key. The method can be based, for example, on a Bluetooth technology.

Abstract: A photoacoustic gas sensor is provided. The photoacoustic gas sensor includes a hermetically sealed housing filled with a reference gas. Further, the photoacoustic gas sensor includes a microphone system arranged inside the housing. The microphone system is configured to generate a first microphone signal comprising a first signal component related to a photoacoustic excitation of the reference gas and a second microphone signal comprising a second signal component related to the photoacoustic excitation. The photoacoustic gas sensor additionally includes a circuit configured to generate an output signal based on the first microphone signal and the second microphone signal by destructively superimposing a third signal component of the first microphone signal related to mechanical vibrations of the photoacoustic gas sensor and a fourth signal component of the second microphone signal related to the mechanical vibrations.

Abstract: A photoacoustic gas sensor includes a hermetically sealed housing filled with a reference gas. The photoacoustic gas sensor furthermore includes a microphone arranged in the housing and configured to generate a microphone signal as a function of a sound wave based on light incident in the housing. Furthermore, the photoacoustic gas sensor includes a controllable heat source arranged in the housing and configured to selectively thermoacoustically excite the reference gas in order to generate a thermoacoustic sound wave phase-shifted with respect to the sound wave.

Abstract: A photoacoustic detector unit comprises a housing having an opening, and also a photoacoustic transducer designed to convert optical radiation into at least one from a pressure signal or a heat signal. The photoacoustic transducer covers the opening of the housing, such that the photoacoustic transducer and the housing form an acoustically tight cavity. A pressure pick-up is arranged in the acoustically tight cavity.

Abstract: A photoacoustic sensor includes a first MEMS device and a second MEMS device. The first MEMS device includes a first MEMS component including an optical emitter, and a first optically transparent cover wafer-bonded to the first MEMS component, wherein the first MEMS component and the first optically transparent cover form a first closed cavity. The second MEMS device includes a second MEMS component including a pressure detector, and a second optically transparent cover wafer-bonded to the second MEMS component, wherein the second MEMS component and the second optically transparent cover form a second closed cavity.

Abstract: An apparatus containing an optical emitter configured to emit optical radiation is provided. Further, the apparatus includes a first hermetically sealed measurement cell filled with a first gas. The first gas is configured to absorb the optical radiation at least partially at one or more predetermined wavelengths. Additionally, the apparatus includes a first microphone arranged in the measurement cell and configured to generate a first microphone signal on a basis of a photoacoustic excitation of the first gas by the optical radiation. The apparatus moreover includes an evaluation circuit configured to take the first microphone signal as a basis for generating a first measurement signal indicating an emission intensity of the optical emitter at the one or more predetermined wavelengths.

Abstract: An example of a system comprises a volume filled with a gas, a gas excitation device configured to excite the gas inside the volume, a microphone configured to output a microphone signal on the basis of the gas excited by the gas excitation device, and a testing unit configured to take the microphone signal as a basis for testing a gas-tightness of the volume. An example of a photoacoustic sensor comprises a hermetically sealed sensor cell, a gas excitation device and a testing unit configured to take the microphone signal dependent on the thermally excited gas as a basis for testing a gas-tightness of the sensor cell. One example comprises a method for testing a gas-tightness of a volume filled with a gas.

Abstract: A microelectromechanical light emitter component comprises an emitter layer structure of the microelectromechanical light emitter component and an inductive structure of the microelectromechanical light emitter component. The inductive structure of the microelectromechanical light emitter component is configured to generate current in the emitter layer structure by electromagnetic induction, such that the emitter layer structure emits light. The emitter layer structure is electrically insulated from the inductive structure.

Abstract: The present application concerns a method for identifying the nature of a bacterial infection from a peritoneal sample, in particular, whether it is a Gram-negative or Gram-positive infection, based upon the determination of one or more cellular and/or humoral markers in a sample.

Abstract: A photoacoustic gas sensor includes a hermetically sealed housing filled with a reference gas. The photoacoustic gas sensor furthermore includes a microphone arranged in the housing and configured to generate a microphone signal as a function of a sound wave based on light incident in the housing. Furthermore, the photoacoustic gas sensor includes a controllable heat source arranged in the housing and configured to selectively thermoacoustically excite the reference gas in order to generate a thermoacoustic sound wave phase-shifted with respect to the sound wave.

Abstract: A photoacoustic gas sensor is provided. The photoacoustic gas sensor includes a hermetically sealed housing filled with a reference gas. Further, the photoacoustic gas sensor includes a microphone system arranged inside the housing. The microphone system is configured to generate a first microphone signal comprising a first signal component related to a photoacoustic excitation of the reference gas and a second microphone signal comprising a second signal component related to the photoacoustic excitation. The photoacoustic gas sensor additionally includes a circuit configured to generate an output signal based on the first microphone signal and the second microphone signal by destructively superimposing a third signal component of the first microphone signal related to mechanical vibrations of the photoacoustic gas sensor and a fourth signal component of the second microphone signal related to the mechanical vibrations.

Abstract: An apparatus containing an optical emitter configured to emit optical radiation is provided. Further, the apparatus includes a first hermetically sealed measurement cell filled with a first gas. The first gas is configured to absorb the optical radiation at least partially at one or more predetermined wavelengths. Additionally, the apparatus includes a first microphone arranged in the measurement cell and configured to generate a first microphone signal on a basis of a photoacoustic excitation of the first gas by the optical radiation. The apparatus moreover includes an evaluation circuit configured to take the first microphone signal as a basis for generating a first measurement signal indicating an emission intensity of the optical emitter at the one or more predetermined wavelengths.

Abstract: An example of a system comprises a volume filled with a gas, a gas excitation device configured to excite the gas inside the volume, a microphone configured to output a microphone signal on the basis of the gas excited by the gas excitation device, and a testing unit configured to take the microphone signal as a basis for testing a gas-tightness of the volume. An example of a photoacoustic sensor comprises a hermetically sealed sensor cell, a gas excitation device and a testing unit configured to take the microphone signal dependent on the thermally excited gas as a basis for testing a gas-tightness of the sensor cell. One example comprises a method for testing a gas-tightness of a volume filled with a gas.

Abstract: A microelectromechanical light emitter component comprises an emitter layer structure of the microelectromechanical light emitter component and an inductive structure of the microelectromechanical light emitter component. The inductive structure of the microelectromechanical light emitter component is configured to generate current in the emitter layer structure by electromagnetic induction, such that the emitter layer structure emits light. The emitter layer structure is electrically insulated from the inductive structure.

Abstract: The present application concerns a method for identifying the nature of a bacterial infection from a peritoneal sample, in particular, whether it is a Gram-negative or Gram-positive infection, based upon the determination of one or more cellular and/or humoral markers in a sample.

Abstract: Method for identifying a bacterial infection The present application concerns a method for identifying the nature of a bacterial infection from a peritoneal sample, in particular, whether it is a Gram-negative or Gram-positive infection, based upon the determination of one or more cellular and/or humoral markers in a sample.

Abstract: Method for identifying a bacterial infection The present application concerns a method for identifying the nature of a bacterial infection from a peritoneal sample, in particular, whether it is a Gram-negative or Gram-positive infection, based upon the determination of one or more cellular and/or humoral markers in a sample.