Patents by Inventor Xiao Yun Lu

Xiao Yun Lu 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).

  • Analyzing ultrasonic signals using a dynamic window for an early detection of scaling in water processing equipment
    Patent number: 9164062
    Abstract: A method of early detection of scaling on internal surfaces of conduits of water processing equipment, is provided herein. The method includes: transmitting ultrasonic signals through the wall of the conduits; deriving data samples from received ultrasonic signals or reflections thereof; calculating a moving average of the scatter of the ultrasonic signals, over time, based on the data samples; applying a statistical operand to the moving average, to yield a statistical distribution metric; determining a dynamic window defined by: (i) an upper boundary being the moving average plus at least a fraction of the statistical distribution metric and (ii) a lower boundary being the moving average minus the at least a fraction of the statistical distribution metric; generating a trend line being a smooth fitting of the derived samples; and monitoring the trend line within the window to detect a crossover of the trend line at either of the boundaries.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: October 20, 2015
    Assignees: THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE, BEN-GURION UNIVERSITY OF THE NEGEV RESEARCH AND DEVELOPMENT AUTHORITY
    Inventors: Alan R Greenberg, Jack Gilron, Keith D Cobry, Elmira Kujundzic, Xiao Yun Lu, Guy Mizrahi, Michael Peterson
  • ANALYZING ULTRASONIC SIGNALS USING A DYNAMIC WINDOW FOR AN EARLY DETECTION OF SCALING IN WATER PROCESSING EQUIPMENT
    Publication number: 20130238133
    Abstract: A method of early detection of scaling on internal surfaces of conduits of water processing equipment, is provided herein. The method includes: transmitting ultrasonic signals through the wall of the conduits; deriving data samples from received ultrasonic signals or reflections thereof; calculating a moving average of the scatter of the ultrasonic signals, over time, based on the data samples; applying a statistical operand to the moving average, to yield a statistical distribution metric; determining a dynamic window defined by: (i) an upper boundary being the moving average plus at least a fraction of the statistical distribution metric and (ii) a lower boundary being the moving average minus the at least a fraction of the statistical distribution metric; generating a trend line being a smooth fitting of the derived samples; and monitoring the trend line within the window to detect a crossover of the trend line at either of the boundaries.
    Type: Application
    Filed: July 12, 2011
    Publication date: September 12, 2013
    Applicants: THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATION, BEN-GURION UNIVERSITY OF THE NEGEV RESEARCH AND DEVELOPMENT AUTHORITY
    Inventors: Alan R. Greenberg, Jack Gilron, Keith D. Cobry, Elmira Kujundzic, Xiao Yun Lu, Guy Mizrahi, Michael Peterson