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).

  • Publication number: 20210021342
    Abstract: 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: Application
    Filed: March 6, 2019
    Publication date: January 21, 2021
    Applicant: SEW-EURODRIVE GMBH & CO. KG
    Inventors: Thomas SCHÄFER, Andreas WANJEK, Zhidong HUA
  • Publication number: 20190369638
    Abstract: 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: Application
    Filed: July 14, 2017
    Publication date: December 5, 2019
    Inventors: Josef SCHMIDT, Jürgen BÖCKLE, Zhidong HUA, Thomas SCHÄFER, Andreas WANJEK
  • Publication number: 20190361115
    Abstract: 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: Application
    Filed: July 14, 2017
    Publication date: November 28, 2019
    Inventors: Josef SCHMIDT, Jürgen BÖCKLE, Zhidong HUA, Thomas SCHÄFER, Andreas WANJEK
  • Publication number: 20190219423
    Abstract: A system includes a first part and a second part, the second part being movable relative to the first part, the first part having an optical waveguide that radiates light on the side, the second part at least one sensor system for detecting the light intensity.
    Type: Application
    Filed: November 22, 2016
    Publication date: July 18, 2019
    Inventors: Zhidong HUA, Josef SCHMIDT, Thomas SCHÄFER, Andreas WANJEK
  • Publication number: 20180356838
    Abstract: In a method for operating, in particular for controlling, a system, and a system, in which the system has vehicles, a central control unit, and at least one stationary transceiver module, which is connected to the central control unit with the aid of a bidirectional communications channel and which has a spatial transmission area, in particular a transmission cone, each vehicle has a respective transceiver module, each in particular having a respective spatial transmission area for the bidirectional communication with the stationary transceiver module and/or a vehicle, the respective transceiver module has at least one controllable light source and one light sensor, in particular a light source of visible light and a light sensor for visible light, the central control unit transmits driving orders to the vehicles with the aid of 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 vehic
    Type: Application
    Filed: November 30, 2016
    Publication date: December 13, 2018
    Applicant: SEW-EURODRIVE GMBH & CO. KG
    Inventors: Josef SCHMIDT, Zhidong HUA, Thomas SCHÄFER
  • Patent number: 10114380
    Abstract: A system, especially an installation, having a vehicle which is maneuverable on a floor is described. The vehicle has an RFID reading device which is connected to an antenna SL, and when the antenna SL enters the coupling region of a floor-installed antenna connected to a stationary RFID transponder, especially an RFID tag, then data stored in the transponder are able to be read out by the reading device. One or more permanent magnet(s) is/are situated on the floor, in particular fixedly joined in the floor, and the vehicle includes a sensor for detecting the direction of the magnetic field.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: October 30, 2018
    Assignee: SEW-EURODRIVE GMBH & CO. KG
    Inventors: Zhidong Hua, Josef Schmidt, Gunnar Meyrowitz, Andreas Wanjek
  • Patent number: 9810531
    Abstract: A system for an installation and a method for operating a system, including stationary transceiver modules and a vehicle having a transceiver module, the individual transceiver module having a controllable light source and a light sensor, so that a data transmission is able to be carried out between the vehicle and the stationary modules.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: November 7, 2017
    Assignee: SEW-EURODRIVE GMBH & CO. KG
    Inventors: Zhidong Hua, Christoph Steffen Keppler
  • Patent number: 9453933
    Abstract: A method for determining the position of a mobile unit which has a first coil, the mobile unit being disposed in a manner allowing movement relative to a stationary second coil, and a system for carrying out a method, the first coil having two part-windings, the second coil likewise having two part-windings, prevailing strengths of the inductive coupling of the part-windings of the first coil, or of the first coil to the part-windings of the second coil or to the second coil being determined, a phase shift of the induced AC-voltage signals being determined, a position range in which the phase shift is a biunique function of the position being determined from the coupling strengths, the position being determined from the phase shift.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: September 27, 2016
    Assignee: SEW-EURODRIVE GMBH & CO. KG
    Inventors: Zhidong Hua, Andreas Wanjek
  • Publication number: 20160226586
    Abstract: 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: Application
    Filed: September 1, 2014
    Publication date: August 4, 2016
    Inventors: Zhidong HUA, Christoph Steffen KEPPLER, Henning SCHÄFER, Andreas WANJEK
  • Publication number: 20150358080
    Abstract: A system for an installation and a method for operating a system, including stationary transceiver modules and a vehicle having a transceiver module, the individual transceiver module having a controllable light source and a light sensor, so that a data transmission is able to be carried out between the vehicle and the stationary modules.
    Type: Application
    Filed: December 13, 2013
    Publication date: December 10, 2015
    Inventors: Zhidong Hua, Christoph Steffen Keppler
  • Publication number: 20150185351
    Abstract: A method for determining the position of a mobile unit which has a first coil, the mobile unit being disposed in a manner allowing movement relative to a stationary second coil, and a system for carrying out a method, the first coil having two part-windings, the second coil likewise having two part-windings, prevailing strengths of the inductive coupling of the part-windings of the first coil, or of the first coil to the part-windings of the second coil or to the second coil being determined, a phase shift of the induced AC-voltage signals being determined, a position range in which the phase shift is a biunique function of the position being determined from the coupling strengths, the position being determined from the phase shift.
    Type: Application
    Filed: May 13, 2013
    Publication date: July 2, 2015
    Inventors: Zhidong Hua, Andreas Wanjek
  • Patent number: 8837560
    Abstract: In a method for interference suppression of a signal composed of symbols, each symbol is transmitted twice in temporal succession as first symbol and second symbol, so that a segment of a symbol corresponds to a segment of the first symbol and a segment of the second symbol. An interference-suppressed signal is composed from the first and second symbols.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: September 16, 2014
    Assignee: Sew-Eurodrive GmbH & Co. KG
    Inventors: Zhidong Hua, Olaf Simon, Thomas Schäfer
  • Patent number: 8639867
    Abstract: A method for bus arbitration is for use when working with multi-carrier modulation methods. Each user on a bus is assigned a unique address which identifies the user and which is transmitted upon each initiation of communication. The address is represented as a sequence of binary numerals, the number of bits of the binary numerals being equal to the number of carriers used in the multi-carrier modulation method. This sequence of binary numerals is transmitted successively for the arbitration via the multi-carrier modulation method, a user being eliminated from the arbitration when a further user at the same time has transmitted a binary numeral having higher priority. The transmission of the binary numeral may be repeated if the arbitration of the numeral does not lead to a result in one step. The method for bus arbitration may be used advantageously in a system for contactless energy supply. A redundant sending of phase-shifted signals reduces the failure rate because of random destructive interference.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: January 28, 2014
    Assignee: Sew-Eurodrive GmbH & Co. KG
    Inventors: Zhidong Hua, Olaf Simon, Wenwang Zhou, Cornelius Mertzlufft-Paufler
  • Publication number: 20140015339
    Abstract: A system, especially an installation, having a vehicle which is maneuverable on a floor is described. The vehicle has an RFID reading device which is connected to an antenna SL, and when the antenna SL enters the coupling region of a floor-installed antenna connected to a stationary RFID transponder, especially an RFID tag, then data stored in the transponder are able to be read out by the reading device. One or more permanent magnet(s) is/are situated on the floor, in particular fixedly joined in the floor, and the vehicle includes a sensor for detecting the direction of the magnetic field.
    Type: Application
    Filed: March 29, 2012
    Publication date: January 16, 2014
    Applicant: SEW-EURODRIVE GMBH & CO. KG
    Inventors: Zhidong Hua, Josef Schmidt, Gunnar Meyrowitz, Andreas Wanjek
  • Publication number: 20120314785
    Abstract: In a method for data transmission by orthogonal frequency multiplexing (OFDM) between a transmitter and a receiver using a data signal, the data signal having a telegram, which is made up of OFDM symbols, the OFDM symbols are transmitted by the transmitter in symbol-wise fashion at a rate of repetition n-fold in succession within the telegram, and in the process of receiving in the receiver, the respectively n-fold successively transmitted OFDM symbols are added symbol-wise in phase.
    Type: Application
    Filed: January 10, 2011
    Publication date: December 13, 2012
    Applicant: SEW-EURODRIVE GMBH & CO. KG
    Inventor: Zhidong Hua
  • Publication number: 20120039371
    Abstract: In a method for interference suppression of a signal composed of symbols, each symbol is transmitted twice in temporal succession as first symbol and second symbol, so that a segment of a symbol corresponds to a segment of the first symbol and a segment of the second symbol. An interference-suppressed signal is composed from the first and second symbols.
    Type: Application
    Filed: April 9, 2010
    Publication date: February 16, 2012
    Inventors: Zhidong Hua, Olaf Simon, Thomas Schäfer
  • Publication number: 20100088537
    Abstract: A method for bus arbitration is for use when working with multi-carrier modulation methods. Each user on a bus is assigned a unique address which identifies the user and which is transmitted upon each initiation of communication. The address is represented as a sequence of binary numerals, the number of bits of the binary numerals being equal to the number of carriers used in the multi-carrier modulation method. This sequence of binary numerals is transmitted successively for the arbitration via the multi-carrier modulation method, a user being eliminated from the arbitration when a further user at the same time has transmitted a binary numeral having higher priority. The transmission of the binary numeral may be repeated if the arbitration of the numeral does not lead to a result in one step. The method for bus arbitration may be used advantageously in a system for contactless energy supply. A redundant sending of phase-shifted signals reduces the failure rate because of random destructive interference.
    Type: Application
    Filed: October 18, 2007
    Publication date: April 8, 2010
    Inventors: Zhidong Hua, Olaf Simon, Wenwang Zhou, Cornelius Mertzlufft Paufler