Abstract: The invention relates to an ultrasonic sensor (112) for use in a distance detection system (110) for a vehicle (111), wherein the ultrasonic sensor (112) is designed to be installed jointly with at least one other ultrasonic sensor (112), the ultrasonic sensor (112) has a first input (114) for connection to a supply lead (116), the ultrasonic sensor (112) has a second input (118) for connection to a ground potential (120) of the vehicle (111), and the ultrasonic sensor (112) has an output (122) for connection to the supply lead (116), wherein the ultrasonic sensor (112) is designed to receive a data signal modulated on the supply lead (116) via the first input (114) and to modulate a data signal onto the supply lead (116) via the output (122).

Abstract: An ultrasonic sensor assembly (1) for a motor vehicle (16) comprises: an ultrasonic sensor (2) having a housing (4), an ultrasonic membrane (5) mechanically decoupled from the housing (5) and a sound transducer element (7) for exciting vibrations and detecting vibrations of the ultrasonic membrane (5); and a screen section (3) arranged in front of the ultrasonic membrane (5) and made of an acoustic metamaterial. The metamaterial is preferably a broadband metamaterial, which can be tunneled in a non-resonant manner in an angular range. The screen section (3) may preferably be formed in a shaped part (13), such as a bodywork metal sheet of the exterior skin or an interior paneling, of the motor vehicle (16).

Abstract: A method for contact detection for an ultrasonic sensor system installed in a concealed or unconcealed manner is disclosed. The method involves detecting reference surroundings information, comprising a time profile of a signal with: noise signal information relating to a wall material and/or airborne sound signal information, using an ultrasonic sensor of the ultrasonic sensor system; storing the reference surroundings information; detecting real-time surroundings information, comprising a time profile of a signal with: noise signal information relating to the wall material and/or airborne sound signal information and/or object sound signal information relating to an object in contact with the wall material, using the ultrasonic sensor; and forming a difference signal between the surroundings information of reference surroundings information and real-time surroundings information, using a computational unit. The difference signal can be interpreted in a further step.

Abstract: The present invention relates to a method for computational noise compensation for an ultrasonic sensor system (1) that is mounted in a concealed manner, in particular for a vehicle with a wall material (2), including the following steps: detecting reference surroundings information (100) comprising noise signal information (3) relating to a wall material (2) and/or airborne sound signal information (4), using an ultrasonic sensor (5) of the ultrasonic sensor system (1); storing the reference surroundings information (200); detecting real-time surroundings information (300) comprising noise signal information (3) relating to the wall material (2) and/or airborne sound signal information (4), using the ultrasonic sensor (5); and forming a difference signal between the pieces of surroundings information (400) of reference surroundings information and real-time surroundings information, using a computational unit (6).

Abstract: The invention relates to an ultrasonic sensor (112) for use in a distance detection system (110) for a vehicle (111), wherein the ultrasonic sensor (112) is designed to be installed jointly with at least one other ultrasonic sensor (112), the ultrasonic sensor (112) has a first input (114) for connection to a supply lead (116), the ultrasonic sensor (112) has a second input (118) for connection to a ground potential (120) of the vehicle (111), and the ultrasonic sensor (112) has an output (122) for connection to the supply lead (116), wherein the ultrasonic sensor (112) is designed to receive a data signal modulated on the supply lead (116) via the first input (114) and to modulate a data signal onto the supply lead (116) via the output (122).