Patents by Inventor Mingzheng Jiang

Mingzheng Jiang 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).

  • Method for determining a remaining operating period of a detector unit
    Patent number: 10859422
    Abstract: The present disclosure relates to a method for determining a remaining operating period of a detector unit for a radiometric, density- or fill-level measuring device. The detector unit includes a photomultiplier. In such method, the control voltage of the photomultiplier is registered over at least one predetermined time period, a time rate of change function is ascertained based on control voltage registered during the predetermined time period, and the remaining operating period until reaching a maximum control voltage is calculated by means of the time rate of change function and a current control voltage, which is present at the current operating time. The method of the present disclosure permits approximation of the remaining operating period of the detector unit and, thus, timely learning of when required maintenance measures, especially aging related replacement of the photomultiplier, must be performed.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: December 8, 2020
    Assignee: Endress+Hauser SE+Co. KG
    Inventors: Hartmut Damm, Mingzheng Jiang, Narcisse Michel Nzitchieu Gadeu, Simon Weidenbruch
  • METHOD FOR DETERMINING A REMAINING OPERATING PERIOD OF A DETECTOR UNIT
    Publication number: 20200056923
    Abstract: The present disclosure relates to a method for determining a remaining operating period of a detector unit for a radiometric, density- or fill-level measuring device. The detector unit includes a photomultiplier. In such method, the control voltage of the photomultiplier is registered over at least one predetermined time period, a time rate of change function is ascertained based on control voltage registered during the predetermined time period, and the remaining operating period until reaching a maximum control voltage is calculated by means of the time rate of change function and a current control voltage, which is present at the current operating time. The method of the present disclosure permits approximation of the remaining operating period of the detector unit and, thus, timely learning of when required maintenance measures, especially aging related replacement of the photomultiplier, must be performed.
    Type: Application
    Filed: October 10, 2017
    Publication date: February 20, 2020
    Inventors: Hartmut Damm, Mingzheng Jiang, Narcisse Michel Nzitchieu Gadeu, Simon Weidenbruch
  • Method for radiometric limit level monitoring
    Patent number: 10533889
    Abstract: A method for limit level monitoring with a radiometric limit switch. A detector measures discrete radiation intensities. Statistical distributions of radiation intensities in a state, free of medium, and in a state, covered by medium, are given by two Poisson distributions.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: January 14, 2020
    Assignee: ENDRESS+HAUSER SE+CO.KG
    Inventors: Simon Weidenbruch, Hartmut Damm, Mingzheng Jiang, Robert Schäuble
  • Method for radiometric limit level monitoring
    Publication number: 20130204550
    Abstract: A method for limit level monitoring with a radiometric limit switch. A detector measures discrete radiation intensities. Statistical distributions of radiation intensities in a state, free of medium, and in a state, covered by medium, are given by two Poisson distributions.
    Type: Application
    Filed: June 20, 2011
    Publication date: August 8, 2013
    Applicant: Endress + Hauser GmbH + Co. KG
    Inventors: Simon Weidenbruch, Hartmut Damm, Mingzheng Jiang, Robert Schäuble