ANALYZING ULTRASONIC SIGNALS USING A DYNAMIC SIGNAL PROCESSING WINDOW FOR AN EARLY DETECTION OF SCALING IN WATER PROCESSING EQUIPMENT
摘要
<p>A method of detecting pre-conditions 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.</p>
申请公布号
SG187048(A1)
申请公布日期
2013.02.28
申请号
SG20130002480
申请日期
2011.07.12
申请人
BEN-GURION UNIVERSITY OF THE NEGEV RESEARCH AND DEVELOPMENT AUTHORITY;THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODYCORPORATE
发明人
GREENBERG, ALAN R.;GILRON, JACK;CORBY, KEITH D.;KUJUNDZIC, ELMIRA;YUN LU, XIAO;MIZRAHI, GUY;PETERSON, MICHAEL