Abstract: A fluid level indicator and method of determining a fluid level. In one example, a fluid level indicator is configured to be disposed in a brake fluid reservoir of a vehicle. A motor drives the fluid level indicator at a constant horsepower. A motor sensor monitors the speed of the motor. A controller receives the motor speed data from the motor sensor and receives vehicle movement data from other vehicle sensors. The controller determines the level of the brake fluid based on the motor speed and the vehicle movement data.

Abstract: A method of detecting occupancy in an area includes obtaining, with a processor, an audio sample from an audio sensor and determining, with the processor, feature functional values of a set of selected feature functionals from the audio sample. The determining of the feature functional values includes extracting features in the set of selected feature functionals from the audio sample, and determining the feature functional values of the set of selected features from the extracted features. The method further includes determining, with the processor, occupancy in the area using a classifier based on the determined feature functional values.

Abstract: A pressure sensor includes a micromechanical sensor element including a pressure-sensitive diaphragm, which spans a cavity in a base material and includes a diaphragm electrode. A fixed counter electrode is situated inside the cavity and, with the diaphragm electrode, forms a first measuring capacitor for detecting a first measuring pressure. A reference capacitor is situated inside the cavity and includes a first and a second fixed reference electrode. The pressure sensor is operable in a first operating mode, in which the first measuring capacitor and the first reference capacitor are interconnected in a first bridge circuit. The pressure sensor is operable in a second operating mode, in which the diaphragm electrode, the counter electrode and the reference electrodes are interconnected in such a way that the diaphragm electrode, together with the at least one first reference electrode, forms a second measuring capacitor for detecting a second measuring pressure.

Abstract: A loudspeaker includes an enclosure having an open front side defining a forward direction for projecting sound, a first support surface configured to support the loudspeaker in a monitor orientation, and a second support surface configured to support the loudspeaker in an upright orientation. In the monitor orientation, the forward direction is arranged at an oblique upward angle relative to a surface on which the enclosure is placed. The loudspeaker also includes an audio transducer positioned within the enclosure and configured to emit sound from the open front side of the enclosure, and a baffle securing the audio transducer to the enclosure. The baffle has a front surface facing in the forward direction and a channel formed in the front surface. The channel is configured to direct water out of the enclosure in the monitor orientation.

Abstract: A method and to a device for charging a battery for a means of transport. The method comprises the steps of: ascertaining an open-circuit voltage of the battery (30) on the basis of a voltage ramp that is generated by a controllable DC-to-DC converter (40) that is electrically connected to the battery (30), ascertaining a differential internal resistance of the battery (30) on the basis of a predefined model for the differential internal resistance of the battery (30) and the open-circuit voltage, ascertaining a target value for an output voltage of the DC-to-DC converter (40) on the basis of the open-circuit voltage of the battery (30), a predefined charging current of the battery (30) and the differential internal resistance of the battery (30), and charging the battery (30) using the target value for the output voltage in the DC-to-DC converter (40).

Abstract: The invention is based on a wiper blade adapter device with an adapter basic body (10) which is provided to be fixedly connected to a wiper blade component (12), and with an adapter unit (14) which is provided for releasable coupling to a wiper arm adapter (16), and wherein the adapter unit (14) is provided to be connected to the adapter basic body (10) via a latching connection. It is proposed that the adapter unit (14) comprises at least one latching means (18) for latching to the adapter basic body (10), said latching means being provided to be at least partially deflected in the direction of a longitudinal centre plane (22) of the adapter unit (14) during assembly with the adapter basic body (10).

Abstract: The invention relates to a side channel compressor (1) for a fuel cell system for conveying and/or compressing a gas, particularly hydrogen, comprising a housing (3) and a drive (6), wherein the housing (3) has a housing upper part (7) and a housing lower part (8), a compressor chamber (30) which is circulating in the housing (3) about an axis of rotation (4) and has at least one peripheral side channel (19), a compressor wheel (2) located in the housing (3), which is rotatably arranged about an axis of rotation (4) and is driven by the drive (6), said compressor wheel (2) comprising blades (5) arranged on the periphery thereof in the region of the compressor chamber (30), and comprising respectively a gas inlet opening (14) embodied on the housing (3) and a gas outlet opening (16) which are fluidically interconnected via the compressor chamber (30), in particular the at least one side channel (19).

Abstract: A method for producing a strategy for a robot. The method includes the following steps: initializing the strategy and an episode length; repeated execution of the loop including the following steps: producing a plurality of further strategies as a function of the strategy; applying the plurality of the further strategies for the length of the episode length; ascertaining respectively a cumulative reward, which is obtained in the application of the respective further strategy; updating the strategy as a function of a second plurality of the further strategies that obtained the greatest cumulative rewards. After each execution of the loop, the episode length is increased. A computer program, a device for carrying out the method, and a machine-readable memory element on which the computer program is stored, are also described.

Abstract: A fuel cell catalyst material includes metal catalyst particles formed of a metal material and a carbon-based coating composition at least partially coating at least some of the metal catalyst particles. The carbon-based coating composition includes a carbon network. The carbon-based coating composition is doped with a dopant. The carbon-based coating composition includes a number of defects formed by one or more vacated carbon atoms in the carbon network.

Abstract: A battery system (100) which comprises a metallic battery housing (200) and a metallic component housing (300), wherein at least one battery module (10) having at least one battery cell (12) and a control unit (20) for controlling and monitoring the at least one battery module (10) are arranged in the battery housing (200) and wherein at least one electrical component (80) is arranged in the component housing (300), which electrical component is electrically connected to the at least one battery module (10).

Abstract: An enclosure for an optoelectronic sensor. The enclosure includes a thermodynamically open first chamber; a thermodynamically closed second chamber; and a rotor extending from the first chamber into the second chamber. The rotor includes a shaft part in the second chamber coaxial to the rotational axis of the rotor. The shaft part mounts an optoelectronic sensor device. The rotor includes a head part in the first chamber coaxial to the rotational axis of the rotor. A heat dissipation fan is fixedly arranged on and surrounds the head part. The head part and the fan are rotatably and thermally coupled to the shaft part to rotate simultaneously with the shaft part. The rotor transfers heat over the shaft part from the second chamber to the head part and the fan dissipates the transferred heat to an environment.

Abstract: A removal tool for a filter insert of a liquid filter. The removal tool includes a body extending along a longitudinal axis. At a distal end, the body includes a first arm and a second arm, the two arms extending essentially in parallel to the longitudinal axis and being spaced apart from one another. The two arms are elastically reversibly deflectable toward one another. A retaining element is situated at the first arm. In an open state of the retaining element, the two arms may be moved toward one another. In a closed state of the retaining element, the retaining element couples the two arms to one another and blocks a movement of the two arms toward one another.

Abstract: A method for joining a camera module, which includes a base plate on which an image sensor is situated, and an objective holder in which an objective of the camera module is accommodated. The base plate and the objective holder are aligned relative to each other in a connection region and a connecting pin is guided through a recess of the base plate and/or the objective holder so that the connecting pin protrudes on the outside, and the at least one free end of the connecting pin is widened by a forming die using a radially acting deformation force such that the base plate and the objective holder are pressed against each other.

Abstract: A micromechanical component for a sensor device including a substrate having a substrate surface, at least one stator electrode situated on the substrate surface and/or on the at least one intermediate layer covering at least partially the substrate surface, which is formed in each case from a first semiconductor and/or metal layer, at least one adjustably situated actuator electrode, which is formed in each case from a second semiconductor and/or metal layer, and a diaphragm spanning the at least one stator electrode and the at least one actuator electrode, including a diaphragm exterior side directed away from the at least one stator electrode, which is formed from a third semiconductor and/or metal layer, a stiffening and/or protective structure protruding at the diaphragm exterior side being formed from a fourth semiconductor and/or metal layer.

Abstract: An interposer substrate, a MEMS device and a corresponding manufacturing method. The interposer substrate is equipped with a front side and a rear side, a cavity starting from the rear side, which extends up to a first depth, a through-opening and a sunken area situated between the cavity and the through-opening, which is sunken from the rear side up to a second depth in relation to the rear side, the first depth being greater than the second depth.

Abstract: A loudspeaker includes an enclosure having an open front side and a rear side opposite the front side, a bottom side, a top side opposite the bottom side, and a pocket open to the top side and open to the rear side. The pocket has an inner surface which is angled from the front side and the top side toward the rear side and the bottom side. The loudspeaker includes an audio transducer positioned within the enclosure and configured to emit sound from the front side of the enclosure, and a handle coupled to the enclosure, arranged at least partially within the pocket, and having a first portion elongated in a first direction and a second portion elongated in a second direction which is angled with respect to the first direction. The first portion includes a curved surface facing the pocket and terminating at lateral edges of the first portion.

Abstract: A battery wherein a first housing element (2) forms a first temperature-control structure (101) on a side averted from the interior space (5), wherein a second housing element (3) forms a second temperature-control structure (102) on a side averted from the interior space (5), and a cover element (100) is connected to the second housing element (3) such that the cover element (100) delimits a temperature-control fluid receptacle (112), which can be flowed through by temperature-control fluid, and the second temperature-control structure (102) is formed such that it can be flowed around by the temperature-control fluid, wherein the cover element (100) is formed in a planar configuration from a metal or has a deformed portion for accommodating a second element (9) of the battery controller.

Abstract: A unit for detecting a filling level of a liquid in a container. The unit includes at least one float gauge, which carries at least one permanent magnet, and including at least one switching unit, which is actuatable by the permanent magnet and is fastened in or at the container. It is provided that at least one energizable magnetic device for generating a magnetic field is assigned to the switching unit, which, when sufficiently energized, generates a magnetic field, which actuates the switching unit when the switching unit is functional.

Abstract: A rod group includes a plurality of first rods that has an arcuate first curve, the first rods having mutually different lengths; and a plurality of second rods that has an S-shaped second curve, the second rods having mutually different lengths. The first rods and the second rods have shapes for treatment of scoliosis by (i) guiding the postoperative apex of the thoracic kyphosis to be located at the thoracic vertebrae T6 to T8, and (ii) guiding a postoperative apex of the thoracic kyphosis to be located at a position different from a preoperative apex of the thoracic kyphosis and the second rod each have a shape extending along an anatomically normal spinal column arrangement.

Abstract: A first road-side network node for operating in a cell-supported radio communications network and for operating in an adhoc radio communications network is provided. Data is exchanged with at least a second road-side network node via a sidelink radio channel of the cell-supported radio communications network. Data is exchanged with at least a third road-side network node via an adhoc radio channel of the adhoc radio communications network.