公开(公告)号：EP2612113A1

公开(公告)日：2013-07-10

申请号：EP11822773.5

申请日：2011-09-06

Applicant: Los Alamos National Security LLC

Inventor： SINHA, Dipen N. ,  OSTERHOUDT, Curtis F. ,  PANTEA, Cristian

IPC: G01F1/66

CPC classification number: G01F1/74 ,  G01F1/66 ,  G01F1/662 ,  G01F1/7082 ,  G01N29/024 ,  G01N29/262

Abstract: An apparatus and method for real-time visualization of particulate matter suspended in a static or flowing fluid and fluid flow patterns in a pipe, tube, conduit, or other container, are described. Ultrasonic scanning and detection of scattered sound from the particles in the fluid create a real-time image of the particles, or of flow patterns in the liquid. Images were taken at a standard video rate of 30 frames per second, and the particles were tracked as a function of time using commercial video tracking software. A mechanical wobbler directs a piezoelectric transducer over a chosen angle in an oscillatory manner. The transducer is operated in a pulse-echo mode wherein the same transducer detects the return signal from the target region through which particles are passing and/or a flow is present. The pulse-echo measurements are made rapidly and continuously during a single sweep of the transducer over the chosen angle.

公开(公告)号：EP2612113B1

公开(公告)日：2016-11-16

申请号：EP11822773.5

申请日：2011-09-06

Applicant: Los Alamos National Security LLC

Inventor： SINHA, Dipen N. ,  OSTERHOUDT, Curtis F. ,  PANTEA, Cristian

IPC: G01N29/024 ,  G01N29/26 ,  G01F1/66 ,  G01F1/74 ,  G01F1/708

CPC classification number: G01F1/74 ,  G01F1/66 ,  G01F1/662 ,  G01F1/7082 ,  G01N29/024 ,  G01N29/262

公开(公告)号：EP2612115A1

公开(公告)日：2013-07-10

申请号：EP11822784.2

申请日：2011-09-06

Applicant: Los Alamos National Security LLC

Inventor： SINHA, Dipen N. ,  OSTERHOUDT, Curtis F. ,  CHAUDHURI, Anirban

IPC: G01F17/00

CPC classification number: G01N29/024 ,  G01F1/74 ,  G01N29/222 ,  G01N29/348 ,  G01N29/4454 ,  G01N29/50 ,  G01N2291/0222 ,  G01N2291/0224 ,  G01N2291/048 ,  G01N2291/102

Abstract: A method for determining the composition of fluids flowing through pipes from noninvasive measurements of acoustic properties of the fluid is described, which includes exciting a first transducer located on the external surface of the pipe through which the fluid is flowing, to generate an ultrasound chirp signal, as opposed to conventional pulses. The chirp signal is received by a second transducer disposed on the external surface of the pipe opposing the location of the first transducer, from which the transit time through the fluid is determined and the sound speed of the ultrasound in the fluid is calculated. The composition of a fluid is calculated from the sound speed therein. The fluid density may also be derived from measurements of sound attenuation. Several signal processing approaches are described for extracting the transit time information from the data with the effects of the pipe wall having been subtracted.