Patents by Inventor Zhidong Hua
Zhidong Hua 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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Publication number: 20240142708Abstract: A communication module for a system for transferring data by light beams includes a transmitter for emitting a light beam in which data to be transferred are encoded, and a receiver for receiving a light beam. The transmitter includes a light source, and the receiver includes a light sensor. The transmitter and receiver are disposed offset from each other in a vertical direction. The transmitter emits a light beam in a longitudinal direction. The receiver has a mirror, which can be pivoted about a pivot axis extending in the vertical direction between a folded-out position and a folded-in position. The mirror is disposed such that a light beam incident from the longitudinal direction is deflected toward the light sensor by the mirror in the folded-out position. A system for transferring data by light beams includes at least one first communication module and at least one second communication module.Type: ApplicationFiled: February 7, 2022Publication date: May 2, 2024Applicant: SEW-EURODRIVE GMBH & CO. KGInventors: Zhidong HUA, Thomas SCHÄFER, Andreas WANJEK, Michael ERMERT
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Patent number: 11888517Abstract: In a method for a data transmission between first and second modules, and a system having mobile parts for performing the method: the time bases of the first and second modules are synchronized; transmitters of the first module emit a light signal pulse individually one after the other and/or in numbered order in a respective time range; the particular receiver of the second module at which the strongest receive signal occurs is determined, the particular time range and/or the number of the particular time range being determined in which the strongest receive signal occurs; the determined time range and/or the determined number is/are transmitted from the second module to the first module; and the transmitter of the first module associated with the determined time range and/or to the determined number is determined and used for the subsequent data transmission from the first module to the second module.Type: GrantFiled: April 2, 2020Date of Patent: January 30, 2024Assignee: SEW-EURODRIVE GMBH & CO. KGInventors: Andreas Wanjek, Steffen Storck, Zhidong Hua, Thomas Schäfer, Josef Schmidt
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Patent number: 11845642Abstract: In a method for operating a system, and a system, the system includes a mobile part drivable on a driving surface, and a load carrier. The mobile part includes a radar sensor connected to a control of the mobile part. The frequency spectrum of an intermediate frequency signal is determined, and, using pattern recognition, the frequency spectrum is compared with stored pattern samples, and the result of the comparison is conveyed to the control. The control actuates actuators such as a drive and/or steering unit of the mobile part as a function of the result of the comparison.Type: GrantFiled: December 13, 2018Date of Patent: December 19, 2023Assignee: SEW-EURODRIVE GMBH & CO.KGInventors: Serdal Ayhan, Andreas Wanjek, Zhidong Hua, Thomas Schäfer, Josef Schmidt
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Patent number: 11789462Abstract: A system includes vehicles, a central control unit, and a stationary transceiver module connected to the central control unit via a bidirectional communications channel. Each has a transceiver module for bidirectional communication with the stationary transceiver module and/or a vehicle. The transceiver module has a controllable light source and a light sensor. The central control unit transmits driving orders to the vehicles via the stationary transceiver module. A first vehicle that is located within the spatial transmission area of the stationary transceiver module forwards a driving order to a second vehicle that is located outside the spatial transmission area of the stationary transceiver module, and the second vehicle transmits data via the first vehicle and the stationary transceiver module to the central control unit.Type: GrantFiled: November 18, 2021Date of Patent: October 17, 2023Assignee: SEW-EURODRIVE GMBH & CO. KGInventors: Josef Schmidt, Zhidong Hua, Thomas Schäfer
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Patent number: 11619735Abstract: In a method and system for position capture of a vehicle along a driving route, situated on a concrete floor having a reinforcement: the vehicle carries out a reference drive along the driving route, the vehicle records measuring points along the driving route, and each measuring point allocates a signal from the reinforcement to a position on the driving route; a reference profile of the driving route is determined based on the measuring points ascertained during the reference drive; the vehicle drives along the driving route and records further measuring points; a profile segment is determined from the further measuring points; the profile segment is uniquely allocated to a segment of the reference profile, e.g., using a correlation method; a position on the driving route is uniquely allocated to the vehicle with the aid of the profile segment allocated to the reference profile.Type: GrantFiled: August 3, 2021Date of Patent: April 4, 2023Assignee: SEW-EURODRIVE GMBH & CO. KGInventors: Josef Schmidt, Jürgen Böckle, Zhidong Hua, Thomas Schäfer, Andreas Wanjek
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Publication number: 20220377215Abstract: A receiver for a light transmission system includes a camera having an image sensor, and a light-sensitive area of the image sensor includes a plurality of rows of light-sensitive elements. The image sensor is configured such that the light-sensitive area of the image sensor is scanned row by row or column by column. An attachment element is arranged such that light incident on the light-sensitive area of the image sensor passes through the attachment element beforehand. The attachment element has at least one lenticular region and at least one planar region.Type: ApplicationFiled: October 1, 2020Publication date: November 24, 2022Applicant: SEW-EURODRIVE GMBH & CO. KGInventors: Zhidong HUA, Patrick RECH, Thomas SCHÄFER, Josef SCHMIDT
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Publication number: 20220247490Abstract: In a method for a data transmission between first and second modules, and a system having mobile parts for performing the method: the time bases of the first and second modules are synchronized; transmitters of the first module emit a light signal pulse individually one after the other and/or in numbered order in a respective time range; the particular receiver of the second module at which the strongest receive signal occurs is determined, the particular time range and/or the number of the particular time range being determined in which the strongest receive signal occurs; the determined time range and/or the determined number is/are transmitted from the second module to the first module; and the transmitter of the first module associated with the determined time range and/or to the determined number is determined and used for the subsequent data transmission from the first module to the second module.Type: ApplicationFiled: April 2, 2020Publication date: August 4, 2022Applicant: SEW-EURODRIVE GMBH & CO. KGInventors: Andreas WANJEK, Steffen STORCK, Zhidong HUA, Thomas SCHÄFER, Josef SCHMIDT
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Publication number: 20220219743Abstract: In a rail system with a rail and mobile parts movable along the rail, e.g., rail vehicles, a profiled part is arranged on the rail and includes a cavity, which, e.g., terminates at an opening into the environment. Regions of a mobile part, e.g., regions of each mobile part, at least partially project into the cavity, and at least one transmitter and receiver are situated in the respective region.Type: ApplicationFiled: May 26, 2020Publication date: July 14, 2022Applicant: SEW-EURODRIVE GMBH & CO. KGInventors: Michael LINDENFELSER, Andreas WANJEK, Zhidong HUA, Thomas SCHÄFER
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Patent number: 11349568Abstract: A system includes a first communications unit, e.g., a transmitter, and a second communications unit, e.g., a receiver. The first communications unit has a controllable illumination device, which emits light modulated according to a predefined data flow, and the second communications unit has a camera, including an optical element and an image sensor. A light-sensitive surface of the image sensor has a plurality of lines of light-sensitive elements, and the image sensor is arranged such that the image of the illumination device projected onto the light-sensitive surface of the image sensor by the optical element is unsharply imaged and/or covers more than half of the light-sensitive surface and is scanned line by line, e.g., so that the image has stripes of different brightness and/or that the brightness profile induced transversely to the line direction spatially indicates the time characteristic of the data flow.Type: GrantFiled: August 23, 2019Date of Patent: May 31, 2022Assignee: SEW-EURODRIVE GmbH & Co. KGInventors: Zhidong Hua, Manuel Hoffmann, Viktoriya Zavalishka, Thomas Schäfer, Michael Lindenfelser, Andreas Wanjek
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Patent number: 11283519Abstract: A system includes a first mobile part and a second mobile part, each being able to be moved in a movement plane of an installation. The first mobile part has corner modules at its outer corner areas, and the second mobile part also has corner modules at its outer corner areas. Each corner module has an electronic circuit together with transmitters and receivers such that modulated light is able to be emitted with the aid of the transmitters, and modulated light is able to be detected and demodulated with the aid of the receivers. The receivers have different sensitivities for light from different directions in space, in particular, the receivers of the respective corner module being situated in one plane with respect to this respective corner module.Type: GrantFiled: March 6, 2019Date of Patent: March 22, 2022Assignee: SEW-EURODRIVE GMBH & CO. KGInventors: Thomas Schäfer, Andreas Wanjek, Zhidong Hua
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Publication number: 20220075389Abstract: A system includes vehicles, a central control unit, and a stationary transceiver module connected to the central control unit via a bidirectional communications channel. Each has a transceiver module for bidirectional communication with the stationary transceiver module and/or a vehicle. The transceiver module has a controllable light source and a light sensor. The central control unit transmits driving orders to the vehicles via the stationary transceiver module. A first vehicle that is located within the spatial transmission area of the stationary transceiver module forwards a driving order to a second vehicle that is located outside the spatial transmission area of the stationary transceiver module, and the second vehicle transmits data via the first vehicle and the stationary transceiver module to the central control unit.Type: ApplicationFiled: November 18, 2021Publication date: March 10, 2022Inventors: Josef SCHMIDT, Zhidong HUA, Thomas SCHÄFER
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Publication number: 20210394806Abstract: In a system and method for operating a system having a rail, a stationary unit, rail-guided mobile parts, and a slotted hollow waveguide, either a first one of the mobile parts or the stationary unit functions as a transmitter, and a second one of the mobile parts functions as a receiver. The transmitter is configured for the simultaneous transmission of an electromagnetic signal and an acoustic signal, e.g., at a first instant. The receiver, which is set apart from the transmitter, is configured to detect the arrival of the electromagnetic signal at a second instant and to detect the arrival of the acoustic signal at a third instant. The second mobile part has an evaluation unit which is configured to determine the distance between the transmitter and the receiver based on the acquired second and third instants.Type: ApplicationFiled: October 15, 2019Publication date: December 23, 2021Applicant: SEW-EURODRIVE GMBH & CO. KGInventors: Zhidong HUA, Jonas Felix BÜRGEL, Michael LINDENFELSER, Andreas WANJEK, Thomas SCHÄFER, Josef SCHMIDT
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Publication number: 20210364633Abstract: In a method and system for position capture of a vehicle along a driving route, situated on a concrete floor having a reinforcement: the vehicle carries out a reference drive along the driving route, the vehicle records measuring points along the driving route, and each measuring point allocates a signal from the reinforcement to a position on the driving route; a reference profile of the driving route is determined based on the measuring points ascertained during the reference drive; the vehicle drives along the driving route and records further measuring points; a profile segment is determined from the further measuring points; the profile segment is uniquely allocated to a segment of the reference profile, e.g., using a correlation method; a position on the driving route is uniquely allocated to the vehicle with the aid of the profile segment allocated to the reference profile.Type: ApplicationFiled: August 3, 2021Publication date: November 25, 2021Inventors: Josef SCHMIDT, Jürgen BÖCKLE, Zhidong HUA, Thomas SCHÄFER, Andreas WANJEK
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Patent number: 11181931Abstract: A system includes vehicles, a central control unit, and a stationary transceiver module connected to the central control unit via a bidirectional communications channel. Each vehicle has a transceiver module for bidirectional communication with the stationary transceiver module and/or a vehicle. The transceiver module has a controllable light source and a light sensor. The central control unit transmits driving orders to the vehicles via the stationary transceiver module. A first vehicle that is located within a spatial transmission area of the stationary transceiver module forwards a driving order to a second vehicle that is located outside the spatial transmission area of the stationary transceiver module, and the second vehicle transmits data via the first vehicle and the stationary transceiver module to the central control unit.Type: GrantFiled: November 30, 2016Date of Patent: November 23, 2021Assignee: SEW-EURODRIVE GMBH & CO. KGInventors: Josef Schmidt, Zhidong Hua, Thomas Schäfer
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Publication number: 20210344420Abstract: A system includes a first communications unit, e.g., a transmitter, and a second communications unit, e.g., a receiver. The first communications unit has a controllable illumination device, which emits light modulated according to a predefined data flow, and the second communications unit has a camera, including an optical element and an image sensor. A light-sensitive surface of the image sensor has a plurality of lines of light-sensitive elements, and the image sensor is arranged such that the image of the illumination device projected onto the light-sensitive surface of the image sensor by the optical element is unsharply imaged and/or covers more than half of the light-sensitive surface and is scanned line by line, e.g., so that the image has stripes of different brightness and/or that the brightness profile induced transversely to the line direction spatially indicates the time characteristic of the data flow.Type: ApplicationFiled: August 23, 2019Publication date: November 4, 2021Applicant: SEW-EURODRIVE GmbH & Co. KGInventors: Zhidong HUA, Manuel HOFFMANN, Viktoriya ZAVALISHKA, Thomas SCHÄFER, Michael LINDENFELSER, Andreas WANJEK
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Patent number: 11092969Abstract: In a system and method for operating a vehicle, the system includes the vehicle and a concrete floor, which has at least one reinforcement rod, the vehicle is disposed on the concrete floor so as to be movable, the vehicle has an evaluation device and a first sensor group, which has at least two sensors, the sensors are situated along a first reference line at a distance from one another, the sensors are adapted to detect the reinforcement rod, and the evaluation device is connected to the sensors and adapted to determine the driving direction based on the signals from the sensors.Type: GrantFiled: July 14, 2017Date of Patent: August 17, 2021Assignee: SEW-EURODRIVE GMBH & CO. KGInventors: Josef Schmidt, Jürgen Böckle, Zhidong Hua, Thomas Schäfer, Andreas Wanjek
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Patent number: 11092687Abstract: In a method and system for position capture of a vehicle along a driving route, situated on a concrete floor having a reinforcement: the vehicle carries out a reference drive along the driving route, the vehicle records measuring points along the driving route, and each measuring point allocates a signal from the reinforcement to a position on the driving route; a reference profile of the driving route is determined based on the measuring points ascertained during the reference drive; the vehicle drives along the driving route and records further measuring points; a profile segment is determined from the further measuring points; the profile segment is uniquely allocated to a segment of the reference profile, e.g., using a correlation method; a position on the driving route is uniquely allocated to the vehicle with the aid of the profile segment allocated to the reference profile.Type: GrantFiled: July 14, 2017Date of Patent: August 17, 2021Assignee: SEW-EURODRIVE GMBH & CO. KGInventors: Josef Schmidt, Jürgen Böckle, Zhidong Hua, Thomas Schäfer, Andreas Wanjek
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Patent number: 10992381Abstract: A method is provided for transmitting information and a device for carrying out the method, in which images are photographed by a camera with an image-taking rate, thus, especially frame rate, a controllable illuminant being disposed in the responsive range of the camera, where the control frequency (f_PWM) of the illuminant is less than the image-taking rate f1.Type: GrantFiled: September 1, 2014Date of Patent: April 27, 2021Assignee: SEW-EURODRIVE GMBH & CO. KGInventors: Zhidong Hua, Christoph Steffen Keppler, Henning Schäfer, Andreas Wanjek
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Publication number: 20210047162Abstract: In a method for operating a system, and a system, the system includes a mobile part drivable on a driving surface, and a load carrier. The mobile part includes a radar sensor connected to a control of the mobile part. The frequency spectrum of an intermediate frequency signal is determined, and, using pattern recognition, the frequency spectrum is compared with stored pattern samples, and the result of the comparison is conveyed to the control. The control actuates actuators such as a drive and/or steering unit of the mobile part as a function of the result of the comparison.Type: ApplicationFiled: December 13, 2018Publication date: February 18, 2021Applicant: SEW-EURODRIVE GMBH & CO.KGInventors: Serdal AYHAN, Andreas WANJEK, Zhidong HUA, Thomas SCHÄFER, Josef SCHMIDT
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Publication number: 20210021342Abstract: A system includes a first mobile part and a second mobile part, each being able to be moved in a movement plane of an installation. The first mobile part has corner modules at its outer corner areas, and the second mobile part also has corner modules at its outer corner areas. Each corner module has an electronic circuit together with transmitters and receivers such that modulated light is able to be emitted with the aid of the transmitters, and modulated light is able to be detected and demodulated with the aid of the receivers. The receivers have different sensitivities for light from different directions in space, in particular, the receivers of the respective corner module being situated in one plane with respect to this respective corner module.Type: ApplicationFiled: March 6, 2019Publication date: January 21, 2021Applicant: SEW-EURODRIVE GMBH & CO. KGInventors: Thomas SCHÄFER, Andreas WANJEK, Zhidong HUA