Abstract: In an embodiment a sensor device for arrangement on a mouth-nose protection includes a sensor unit having at least one sensor element configured to detect individual breathing processes of a user when the mouth-nose protection with the sensor device is used by a user and an evaluation unit configured to count the breathing processes of the user depending on a detection signal provided by the sensor unit and provide an evaluation signal for a signaling unit depending on a determined number of breathing processes.

Abstract: A sensor element is disclosed. In an embodiment, a sensor element with an increased level of integration includes a main part with a membrane and an edge zone arranged around the membrane and an electrically conductive layer having a first region arranged over the membrane of the main part and a second region arranged over the edge zone of the main part, wherein the membrane is a pressure-sensitive zone of the main part such that the membrane is configured to undergo deformation as a function of a pressure differential between an upper side and an underside of the membrane, wherein the edge zone is a pressure-insensitive zone, and wherein the electrically conductive layer is structured in the second region such that at least one temperature-dependent resistance is formed in the second region of the electrically conductive layer.

Abstract: A sensor element and a method for making a sensor element are disclosed. In an embodiment, a sensor element includes a main part with a membrane and an edge zone arranged around the membrane and an electrically conductive layer having a first region arranged over the membrane of the main part and a second region arranged over the edge zone of the main part, wherein the membrane is a pressure-sensitive zone of the main part such that the membrane is configured to undergo deformation as a function of a pressure differential between an upper side and an underside of the membrane, wherein the edge zone is a pressure-insensitive zone, and wherein the electrically conductive layer is structured in the second region such that at least one temperature-dependent resistance is formed in the second region of the electrically conductive layer.

Abstract: A power contactor and a method for checking a functioning of a power contactor are disclosed. In an embodiment a power contactor includes a first electrical contact, a second electrical contact, a switching element configured to assume an open position and a closed position, wherein, in the closed position, the switching element connects the first electrical contact and the second electrical contact to one another, and wherein, in the open position, the first electrical contact and the second electrical contact are insulated from one another and a current sensor integrated into the power contactor, wherein the current sensor is configured to detect a current intensity of a current flowing through the power contactor.

Abstract: A sensor is disclosed. In an embodiment, the sensor includes a fixed structure, a movable structure movable relative to the fixed structure, a magnet configured to generate a magnetic field and a first magnetically sensitive element configured to determine the magnetic field at a position of the first magnetically sensitive element. The magnet is fastened to the fixed structure and the first magnetically sensitive element is fastened to the movable structure. Alternatively, the magnet is fastened to the movable structure and the first magnetically sensitive element is fastened to the fixed structure.

Abstract: A sensor system includes a sensor chip mounted on a mounting receptacle of a ceramic housing body. The housing body is shaped three-dimensionally and embodied monolithically and is formed by a ceramic material having a coefficient of thermal expansion which deviates from the coefficient of thermal expansion of the sensor chip by less than 30% in a temperature range of greater than or equal to ?40° C. and less than or equal to 150° C.

Abstract: A method for sealing apertures caused by manufacturing processes in micromechanical acceleration sensors is disclosed whereby apertures or recesses, serving for leading the conductor paths out of the oscillation space of an acceleration sensor without causing short circuits, can be sealed in a gas-tight manner in a simple way. The conductor paths establish the conducting connection between junction contacts of the acceleration sensor accessible from the outside with electrodes which are allocated on both sides to the oscillating mass of the acceleration sensor which is also configured as an electrode. The method provides to use an adhesive, which is curable or hardenable by means of light, and in particular, ultraviolet light.