Abstract: A device (9) for determining a speed of a rail-based vehicle with wheels on a predetermined network of routes includes an interface (8) for collecting one-dimensional or multi-dimensional vibration data (5) corresponding to vibrations of at least one wheel acting on the rail-based vehicle as an acceleration of the rail-based vehicle. The vibrations are detectable using at least one wireless sensor (2a, 2b, 2c, 2d) arranged proximate the at least one wheel. A learning module is configured to apply a trained machine-learned model to the vibration data to determine a ground speed. The trained machine-learned model is trained based on a distance traveled and a ground truth speed (17) and a corresponding portion of the vibration data (5).

Abstract: A computer-implemented method for filtering at least one useful signal from at least one noisy acoustic signal of an input signal, includes receiving, from at least one acoustic sensor, the input signal, wherein the at least one useful signal is designed as a siren signal, wherein the input signal is noisy due to wind noise, tire rolling noise, or vehicle internal noise, and a noise component of the input signal masks the at least one useful signal contained in the input signal. The method further includes applying at least one correlation function to the input signal, wherein the correlation function is applied iteratively to result data of the correlation function to increase a signal-to-noise ratio of the input signal.

Abstract: A device for detecting airborne sound for use in automobiles may include an acoustic sensor, a protective screen for protecting the device against the ingress of coarse foreign matter, an acoustically permeable, hydrophobic and/or lipophobic first membrane, which is placed behind the protective screen in the airflow direction such that when a stream of water enters the opening, the water flows past the first membrane and out of the opening, a sound chamber parallel to the axial axis, wherein a length of the sound chamber is less than 10 mm, preferably less than 6 mm, particularly preferably less than 3 mm, and a printed circuit board comprising components and their connections for preprocessing analog or digital signals from the acoustic sensor, and wherein the acoustic sensor is located on one side of the printed circuit board.

Abstract: A device (9) for determining a speed of a rail-based vehicle with wheels on a predetermined network of routes includes an interface (8) for collecting one-dimensional or multi-dimensional vibration data (5) corresponding to vibrations of at least one wheel acting on the rail-based vehicle as an acceleration of the rail-based vehicle. The vibrations are detectable using at least one wireless sensor (2a, 2b, 2c, 2d) arranged proximate the at least one wheel. A learning module is configured to apply a trained machine-learned model to the vibration data to determine a ground speed. The trained machine-learned model is trained based on a distance traveled and a ground truth speed (17) and a corresponding portion of the vibration data (5).

Abstract: A device for detecting airborne sound for use in automobiles may include an acoustic sensor, a protective screen for protecting the device against the ingress of coarse foreign matter, an acoustically permeable, hydrophobic and/or lipophobic first membrane, which is placed behind the protective screen in the airflow direction such that when a stream of water enters the opening, the water flows past the first membrane and out of the opening, a sound chamber parallel to the axial axis, wherein a length of the sound chamber is less than 10 mm, preferably less than 6 mm, particularly preferably less than 3 mm, and a printed circuit board comprising components and their connections for preprocessing analog or digital signals from the acoustic sensor, and wherein the acoustic sensor is located on one side of the printed circuit board.

Abstract: A system with which automated vehicles can detect road damage, wherein the automated vehicles have at least one sensor for detecting structure-borne and/or air-borne sounds generated by the vehicle when driving over road damage, wherein the system is configured to detect the road damage on the basis of the data from the at least one sensor. The system also records the position of the automated vehicle when driving over the road damage and stores it. Position and information regarding the road damage are sent to a control unit in the automated vehicle, or other automated vehicles. The control unit determines regulating and/or control signals for an avoidance trajectory with which the road damage is avoided or passed on the basis of the position and information regarding the road damage that is received.

Abstract: An apparatus for testing electronic devices, having a test head coupled to at least one immovably mounted test socket, a positioning device for positioning the electronic device in testing position and a lead-backer attached to the positioning device for supporting the electronic device and pressing it against the test socket. A supply port for supplying a temperature control medium to a temperature control system of the said lead-backer is immovably mounted beside the said test socket, the said temperature control system of the said lead-backer and the said supply port communicate with each other when the electronic device is in testing position, whereby the said temperature control medium flows from the said supply port to the said temperature control system of the said lead-backer.

Abstract: An apparatus for testing electronic devices, having a test head coupled to at least one immovably mounted test socket, a positioning device for positioning the electronic device in testing position and a lead-backer attached to the positioning device for supporting the electronic device and pressing it against the test socket. A supply port for supplying a temperature control medium to a temperature control system of the said lead-backer is immovably mounted beside the said test socket, the said temperature control system of the said lead-backer and the said supply port communicate with each other when the electronic device is in testing position, whereby the said temperature control medium flows from the said supply port to the said temperature control system of the said lead-backer.