Patents by Inventor Lars Schubert
Lars Schubert has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11841459Abstract: A method of monitoring a protected zone of a vehicle, wherein the protected zone is bounded at least regionally by a boundary contour, comprises the following steps: positioning the vehicle at a teaching zone comprising the boundary contour; teaching a reference contour by means of measuring the boundary contour by an environmental sensor arranged at the vehicle; and monitoring the protected zone on the basis of the reference contour and on measured values detected by the environmental sensor.Type: GrantFiled: January 23, 2020Date of Patent: December 12, 2023Assignee: SICK AGInventors: Christoph Hansen, Lars Schubert
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Patent number: 11359917Abstract: A method for non-destructive testing of walls of components, at least one ultrasonic transducer (1) which is fixed to a surface of the wall is used to emit horizontally polarized transverse waves (3) in a lateral propagation direction and compression waves or vertically polarized transverse waves (6) in a radial propagation direction. The at least one ultrasonic transducer (1) and/or at least one further ultrasonic transducer arranged at a known distance from the at least one ultrasonic transducer (1) on the respective wall of the component (2) is/are used to detect horizontally polarized transverse waves (4) reflected by defects and compression waves or vertically polarized transverse waves (7) after or while running the non-destructive testing of the wall in order to determine the respective wall thickness.Type: GrantFiled: May 13, 2020Date of Patent: June 14, 2022Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Bianca Weihnacht, Tobias Gaul, Uwe Lieske, Lars Schubert
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Patent number: 11300545Abstract: In the system, two ultrasonic transducers, which form a pair and each have a piezoelectric ceramic plate-shaped element with a rectangular geometry, can be fastened to a surface of a component. The two ultrasonic transducers are arranged at a distance from one another such that there is no direct mechanical contact and they are arranged beside one another with a parallel orientation of their central longitudinal axes. The two elements have a different polarization along their width and are connected with the same polarity to an electrical voltage source. The two plate-shaped elements can also have an identical polarization along their width and can be connected in this case with opposite polarity to an electrical voltage source. At least one ultrasonic transducer and/or at least one further ultrasonic transducer is/are designed to detect ultrasonic waves reflected by defects and/or shear waves simultaneously emitted by the two ultrasonic transducers.Type: GrantFiled: May 13, 2020Date of Patent: April 12, 2022Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Bianca Weihnacht, Tobias Gaul, Uwe Lieske, Lars Schubert, Bernd Koehler
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Patent number: 11174989Abstract: A sensor arrangement for securing a monitored zone having at least one hazard zone with respect to a machine is provided, wherein the sensor arrangement has at least one optoelectronic monitoring sensor for detecting objects in the monitored zone and has a control and evaluation unit that is configured to compare the positions of detected objects with the hazard zone and to initiate a safety-relevant response of the machine in the case of a dangerous position. The control and evaluation unit is furthermore configured to generate and to monitor a further hazard zone with respect to a detected object.Type: GrantFiled: August 8, 2019Date of Patent: November 16, 2021Assignee: SICK AGInventors: Markus Böhning, Ulrich Druzella, Lars Schubert, Heiko Steinkemper
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Publication number: 20200363196Abstract: A method for non-destructive testing of walls of components, at least one ultrasonic transducer (1) which is fixed to a surface of the wall is used to emit horizontally polarized transverse waves (3) in a lateral propagation direction and compression waves or vertically polarized transverse waves (6) in a radial propagation direction. The at least one ultrasonic transducer (1) and/or at least one further ultrasonic transducer arranged at a known distance from the at least one ultrasonic transducer (1) on the respective wall of the component (2) is/are used to detect horizontally polarized transverse waves (4) reflected by defects and compression waves or vertically polarized transverse waves (7) after or while running the non-destructive testing of the wall in order to determine the respective wall thickness.Type: ApplicationFiled: May 13, 2020Publication date: November 19, 2020Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Bianca WEIHNACHT, Tobias GAUL, Uwe LIESKE, Lars SCHUBERT
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Publication number: 20200363374Abstract: In the system, two ultrasonic transducers, which form a pair and each have a piezoelectric ceramic plate-shaped element with a rectangular geometry, can be fastened to a surface of a component. The two ultrasonic transducers are arranged at a distance from one another such that there is no direct mechanical contact and they are arranged beside one another with a parallel orientation of their central longitudinal axes. The two elements have a different polarization along their width and are connected with the same polarity to an electrical voltage source. The two plate-shaped elements can also have an identical polarization along their width and can be connected in this case with opposite polarity to an electrical voltage source. At least one ultrasonic transducer and/or at least one further ultrasonic transducer is/are designed to detect ultrasonic waves reflected by defects and/or shear waves simultaneously emitted by the two ultrasonic transducers.Type: ApplicationFiled: May 13, 2020Publication date: November 19, 2020Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Bianca WEIHNACHT, Tobias GAUL, Uwe LIESKE, Lars SCHUBERT, Bernd KOEHLER
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Patent number: 10765406Abstract: Embodiments of the present invention provide a device for obtaining information about one or more living beings. The device comprises an actuator, a sensor and an evaluator. The actuator is configured to output an excitation signal for exciting the living being(s). The sensor is configured to detect a signal generated by the living being(s) in reaction to the excitation signal, to obtain a detected signal. The evaluator is configured to evaluate the detected signal so as to obtain the information about the living being(s).Type: GrantFiled: March 25, 2016Date of Patent: September 8, 2020Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Olaf Roeder, Lars Schubert, Constanze Tschoepe, Bernd Frankenstein, Uwe Lieske
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Publication number: 20200241538Abstract: A method of monitoring a protected zone of a vehicle, wherein the protected zone is bounded at least regionally by a boundary contour, comprises the following steps: positioning the vehicle at a teaching zone comprising the boundary contour; teaching a reference contour by means of measuring the boundary contour by an environmental sensor arranged at the vehicle; and monitoring the protected zone on the basis of the reference contour and on measured values detected by the environmental sensor.Type: ApplicationFiled: January 23, 2020Publication date: July 30, 2020Inventors: Christoph HANSEN, Lars SCHUBERT
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Publication number: 20200056742Abstract: A sensor arrangement for securing a monitored zone having at least one hazard zone with respect to a machine is provided, wherein the sensor arrangement has at least one optoelectronic monitoring sensor for detecting objects in the monitored zone and has a control and evaluation unit that is configured to compare the positions of detected objects with the hazard zone and to initiate a safety-relevant response of the machine in the case of a dangerous position. The control and evaluation unit is furthermore configured to generate and to monitor a further hazard zone with respect to a detected object.Type: ApplicationFiled: August 8, 2019Publication date: February 20, 2020Inventors: Markus BÖHNING, Ulrich DRUZELLA, Lars SCHUBERT, Heiko STEINKEMPER
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Patent number: 9645574Abstract: The invention relates to a method for monitoring the condition of rotor blades for wind turbines. It is therefore the object of the invention to increase the accuracy of the monitoring of the condition of rotor blades of wind turbines and to allow a localization of faults or defects and their exact description. In the method in accordance with the invention, eigenvibrations of a rotor blade occurring globally at the rotor blade and locally guided elastic waves are permanently detected with time and spatial resolution using a sensor network and actuator network attached to the rotor blade or using a network arrangement of ultrasound transducers. In addition, elastic waves which are guided periodically at predefinable time intervals and which are respectively emitted by an actuator or ultrasound transducer and detected by sensors or ultrasound transducers are in so doing inspected for variations of the emitted waves.Type: GrantFiled: September 7, 2010Date of Patent: May 9, 2017Assignees: Wölfel Engineering GmbH + Co. KG, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Bernd Frankenstein, Frank Schubert, Lars Schubert, Eberhard Schulze, Herbert Friedmann, Fritz-Otto Henkel, Carsten Ebert
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Publication number: 20160216238Abstract: The present invention relates to a device and related method that includes an ultrasonic transducer, an acoustic waveguide acoustically coupled to the ultrasonic transducer and transmitting and receiving electronics for transmitting and receiving ultrasound waves via the ultrasonic transducer in an explosion-protected housing. The transmitting and receiving electronics has an energy storage connected to an amplifier circuit, wherein control signals for the ultrasonic transducer transmitted from outside can be amplified to such an extent that ultrasonic signals significantly strong for monitoring can be generated. By means of the acoustic waveguide, the ultrasonic signals are guided outside through an explosion-protected passthrough in the housing and are coupled into the object. As a result, objects can be continuously monitored in explosion-protected zones without violating the safety regulations and without a stoppage of the associated system or draining of the objects.Type: ApplicationFiled: August 14, 2014Publication date: July 28, 2016Inventors: LARS SCHUBERT, THOMAS KLESSE, OLAF ROEDER, BERND FRANKENSTEIN
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Publication number: 20160206286Abstract: Embodiments of the present invention provide a device for obtaining information about one or more living beings. The device comprises an actuator, a sensor and an evaluator. The actuator is configured to output an excitation signal for exciting the living being(s). The sensor is configured to detect a signal generated by the living being(s) in reaction to the excitation signal, to obtain a detected signal. The evaluator is configured to evaluate the detected signal so as to obtain the information about the living being(s).Type: ApplicationFiled: March 25, 2016Publication date: July 21, 2016Inventors: Olaf ROEDER, Lars SCHUBERT, Constanze TSCHOEPE, Bernd FRANKENSTEIN, Uwe LIESKE
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Publication number: 20140292642Abstract: The present invention relates to a method for determining and reproducing virtual, location-based information for a region of space, comprising the steps of: using a sensor device to detect measurement data from at least one part of a body of a viewer in the region of space, determining a posture of the viewer on the basis of the measurement data, identifying a spatial position of the viewer relative to the region of space, determining a viewing direction of the viewer relative to the region of space on the basis of the spatial position and the posture, determining the virtual, location-based information on the basis of the viewing direction, and using a display device to reproduce the virtual, location-based information.Type: ApplicationFiled: June 13, 2012Publication date: October 2, 2014Applicant: IFAKT GMBHInventors: Lars Schubert, Mathias Grube, Armand Heim, Stefan Tuerck
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Publication number: 20120253697Abstract: The invention relates to a method for monitoring the condition of rotor blades for wind turbines. It is therefore the object of the invention to increase the accuracy of the monitoring of the condition of rotor blades of wind turbines and to allow a localization of faults or defects and their exact description. In the method in accordance with the invention, eigenvibrations of a rotor blade occurring globally at the rotor blade and locally guided elastic waves are permanently detected with time and spatial resolution using a sensor network and actuator network attached to the rotor blade or using a network arrangement of ultrasound transducers. In addition, elastic waves which are guided periodically at predefinable time intervals and which are respectively emitted by an actuator or ultrasound transducer and detected by sensors or ultrasound transducers are in so doing inspected for variations of the emitted waves.Type: ApplicationFiled: September 7, 2010Publication date: October 4, 2012Applicant: Fraunhofer-Gesellschaft zur Förderung der AngewandInventors: Bernd Frankenstein, Frank Schubert, Lars Schubert, Eberhard Schulze, Herbert Friedmann, Fritz-Otto Henkel, Carsten Ebert