Patents by Inventor Daxing Hu

Daxing Hu 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).

  • Self-learning relay turn-off control system and method
    Patent number: 9754744
    Abstract: An exemplary embodiment is disclosed of a relay turn-off control system for use with an alternating-current (AC) signal input. The system may include a relay, a relay current load sensor connected to the relay, and a rectifier circuit connected to the relay current load sensor and having an output. A microprocessor may be connected to the rectifier circuit output. The microprocessor may be configured to set a relay turn-off signal output time based on an empirically determined duration time for the relay to turn-off and further based on determining a zero-cross period via use of a modulo operation.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: September 5, 2017
    Assignee: Emerson Electric Co.
    Inventors: Lili Wan, Daxing Hu
  • SELF-LEARNING RELAY TURN-OFF CONTROL SYSTEM AND METHOD
    Publication number: 20170053760
    Abstract: An exemplary embodiment is disclosed of a relay turn-off control system for use with an alternating-current (AC) signal input. The system may include a relay, a relay current load sensor connected to the relay, and a rectifier circuit connected to the relay current load sensor and having an output. A microprocessor may be connected to the rectifier circuit output. The microprocessor may be configured to set a relay turn-off signal output time based on an empirically determined duration time for the relay to turn-off and further based on determining a zero-cross period via use of a modulo operation.
    Type: Application
    Filed: August 26, 2015
    Publication date: February 23, 2017
    Inventors: Lili Wan, Daxing Hu