Patents by Inventor Xinjun Wan

Xinjun Wan 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).

  • Patent number: 8643849
    Abstract: A measurement system comprising a light source unit, a projection unit and an optics unit is disclosed. The light source unit is configured to generate a plurality of modulated phase shifted light beams. The projection unit is configured to reflect the modulated phase shifted light beams onto an object surface. The optics unit is configured to capture the modulated phase shifted light beams from the object surface. The measurement system further comprises a photodetector and a processor. The photodetector is configured to receive the modulated phase shifted light beams from the optics unit to generate electrical signals. The processor is configured to retrieve position information of the object surface based on the electrical signals from the photodetector. A measurement method is also presented.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: February 4, 2014
    Assignee: General Electric Company
    Inventors: Li Tao, Guiju Song, Xinjun Wan, Kevin George Harding, Steven Robert Hayashi, James Joseph Hoffman, Charles Walter Muekmore, Yana Zhang Williams, Shukuan Xu
  • Publication number: 20130300855
    Abstract: A system (200) and method for performing an internal inspection on a rotor blade (16) of a wind turbine are disclosed. The system includes a sensing device (202), a cable (210) for raising and lowering the sensing device within the rotor blade, and a positioning device (206) attached to at least one of the sensing device and the cable. The positioning device can be configured to space the sensing device apart from an interior surface (208) of the rotor blade as the sensing device is raised and lowered within the rotor blade.
    Type: Application
    Filed: January 21, 2011
    Publication date: November 14, 2013
    Inventors: Peter James Fritz, Kevin George Harding, Guiju Song, Yong Yang, Li Tao, Xinjun Wan
  • Patent number: 8270667
    Abstract: A system and method for inspecting a wind turbine for indications is disclosed. The method includes providing an inspection system spaced from the wind turbine, appraise a rotor blade of the wind turbine, and inspecting the rotor blade for indications. The inspection system includes an observation system and an inspection device, the observation system including an appraisal device and an automated scanning device, the appraisal device configured to provide an image of at least a portion of the rotor blade, the automated scanning device configured to rotate about at least one axis, shifting the image.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: September 18, 2012
    Assignee: General Electric Company
    Inventors: Peter James Fritz, Shu Ching Quek, Guiju Song, Li Tao, Xinjun Wan, Raul Munoz Medina
  • Publication number: 20120147383
    Abstract: A measurement system comprising a light source unit, a projection unit and an optics unit is disclosed. The light source unit is configured to generate a plurality of modulated phase shifted light beams. The projection unit is configured to reflect the modulated phase shifted light beams onto an object surface. The optics unit is configured to capture the modulated phase shifted light beams from the object surface. The measurement system further comprises a photodetector and a processor. The photodetector is configured to receive the modulated phase shifted light beams from the optics unit to generate electrical signals. The processor is configured to retrieve position information of the object surface based on the electrical signals from the photodetector. A measurement method is also presented.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 14, 2012
    Inventors: Li TAO, Guiju Song, Xinjun Wan, Kevin George Harding, Steven Robert Hayashi, James Joseph Hoffman, Charles Walter Muekmore, Yana Zhang Williams, Shukuan Xu
  • Publication number: 20120149281
    Abstract: A distance measurement system comprises an optical distance sensor configured to generate a light beam, a first optical module, and a processor. The first optical module is configured to receive the light beam, and generate and selectively transmit a plurality of light beams having different light channels for projection onto one or more points of an object to generate one or more reflected light beams scattered from the respective one or more points of the object, and capture and transmit the one or more reflected light beams into the optical distance sensor to retrieve a plurality of distance data to the respective one or more points of the object. The processor is configured to process the distance data to determine position information of the respective one or more points of the object. A distance measurement method is also presented.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 14, 2012
    Inventors: Xinjun WAN, Guju Song, Kevin George Harding, Shukuan Xu, Steven Robert Hayashi, Robert William Tait, James Joseph Hoffman, Charles Walter Muchmore, Matthew Michael Gluesenkamp
  • Publication number: 20120076345
    Abstract: A system and method for inspecting a wind turbine for indications is disclosed. The method includes providing an inspection system spaced from the wind turbine, appraise a rotor blade of the wind turbine, and inspecting the rotor blade for indications. The inspection system includes an observation system and an inspection device, the observation system including an appraisal device and an automated scanning device, the appraisal device configured to provide an image of at least a portion of the rotor blade, the automated scanning device configured to rotate about at least one axis, shifting the image.
    Type: Application
    Filed: September 26, 2011
    Publication date: March 29, 2012
    Inventors: Peter James FRITZ, Shu Ching Quek, Guiju Song, Li Tao, Xinjun Wan, Raul Munoz Medina
  • Patent number: 7812968
    Abstract: A probe is presented that includes a light source, a coherent fiber bundle, and a pattern selector. The pattern selector is disposed between the light source and the proximal end of the coherent fiber bundle. The pattern selector includes at least one patterned zone through which light from the light source passes to project at least one fringe set onto a surface. Each of the at least one fringe sets has a structured-light pattern. The probe further includes an imager for obtaining at least one image of the surface and a processing unit that is configured to perform phase-shift analysis on the at least one image. A method for projecting a plurality of fringe sets suitable for phase-shift analysis on a surface using a probe is presented.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: October 12, 2010
    Assignee: GE Inspection Technologies, LP
    Inventors: Clark Alexander Bendall, Kevin George Harding, Guiju Song, Li Tao, Ming Jia, Xinjun Wan
  • Publication number: 20090225320
    Abstract: A probe is presented that includes a light source, a coherent fiber bundle, and a pattern selector. The pattern selector is disposed between the light source and the proximal end of the coherent fiber bundle. The pattern selector includes at least one patterned zone through which light from the light source passes to project at least one fringe set onto a surface. Each of the at least one fringe sets has a structured-light pattern. The probe further includes an imager for obtaining at least one image of the surface and a processing unit that is configured to perform phase-shift analysis on the at least one image. A method for projecting a plurality of fringe sets suitable for phase-shift analysis on a surface using a probe is presented.
    Type: Application
    Filed: March 5, 2008
    Publication date: September 10, 2009
    Inventors: Clark Alexander Bendall, Kevin George Harding, Guiju Song, Li Tao, Ming Jia, Xinjun Wan