Patents by Inventor Chunning Zhang

Chunning Zhang 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: 10732313
    Abstract: A system and method of for underground line location using motion based responsiveness includes an underground line locator. The underground line locator includes a receiver generating raw measurement data based on a location of an underground line relative to the receiver, a motion sensor generating motion data based on a state of motion of the underground line locator, a processor coupled to the receiver and the motion sensor, and a display coupled to the processor. The processor determines a measurement signal based on the raw measurement data. A responsiveness of the measurement signal to the raw measurement data is based on the motion data. The display shows a representation of the measurement signal. In one or more embodiments, the measurement signal may be determined using a primary signal detector that adaptively filters the raw measurement data using an adaptive band-pass filter.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: August 4, 2020
    Assignee: METROTECH CORPORATION
    Inventor: Chunning Zhang
  • Patent number: 9733379
    Abstract: A line locator system that includes a metal detector is disclosed. In accordance with some embodiments of the invention, the line locator system includes a digital signal processor in a housing; a line locator portion mounted in the housing and coupled to the digital signal processor; and an active metal detector mounted in the housing and coupled to the digital signal processor.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: August 15, 2017
    Assignee: METROTECH CORPORATION
    Inventors: Stevan Polak, Chunning Zhang
  • Publication number: 20160377760
    Abstract: A system and method of for underground line location using motion based responsiveness includes an underground line locator. The underground line locator includes a receiver generating raw measurement data based on a location of an underground line relative to the receiver, a motion sensor generating motion data based on a state of motion of the underground line locator, a processor coupled to the receiver and the motion sensor, and a display coupled to the processor. The processor determines a measurement signal based on the raw measurement data. A responsiveness of the measurement signal to the raw measurement data is based on the motion data. The display shows a representation of the measurement signal. In one or more embodiments, the measurement signal may be determined using a primary signal detector that adaptively filters the raw measurement data using an adaptive band-pass filter.
    Type: Application
    Filed: June 23, 2016
    Publication date: December 29, 2016
    Inventor: Chunning ZHANG
  • Publication number: 20150369942
    Abstract: A line locator system that includes a metal detector is disclosed. In accordance with some embodiments of the invention, the line locator system includes a digital signal processor in a housing; a line locator portion mounted in the housing and coupled to the digital signal processor; and an active metal detector mounted in the housing and coupled to the digital signal processor.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 24, 2015
    Inventors: Stevan Polak, Chunning Zhang