Patents by Inventor Qiqiang Long

Qiqiang Long 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).

  • Clamp meter
    Patent number: 10605834
    Abstract: A clamp meter to be used for detecting resistance of a ground loop on which the detection is to be performed includes a source transformer unit that is configured to receive an alternating input voltage signal and is capable of being electrically coupled to the ground loop on which the detection is to be performed; an induction transformer unit that is capable of being electrically coupled to the ground loop and the induction transformer unit being configured to be capable of generating an induced current signal as a response to the input voltage signal; a reference resistance loop that is electrically coupled to the source transformer unit and the induction transformer unit; and a processing controller that receives the induced current signal and the processing controller is configured to be capable of determining the resistance of the ground loop based on the induced current signal.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: March 31, 2020
    Assignee: Fluke Corporation
    Inventors: Qiqiang Long, Zhengping Wu
  • CLAMP METER
    Publication number: 20180210014
    Abstract: A clamp meter to be used for detecting resistance of a ground loop on which the detection is to be performed includes a source transformer unit that is configured to receive an alternating input voltage signal and is capable of being electrically coupled to the ground loop on which the detection is to be performed; an induction transformer unit that is capable of being electrically coupled to the ground loop and the induction transformer unit being configured to be capable of generating an induced current signal as a response to the input voltage signal; a reference resistance loop that is electrically coupled to the source transformer unit and the induction transformer unit; and a processing controller that receives the induced current signal and the processing controller is configured to be capable of determining the resistance of the ground loop based on the induced current signal.
    Type: Application
    Filed: January 19, 2018
    Publication date: July 26, 2018
    Inventors: Qiqiang Long, Zhengping Wu