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1. WO1992007514 - USING DOPPLER MODULATION PARAMETERS FOR AMPLITUDE ESTIMATION

Publication Number WO/1992/007514
Publication Date 14.05.1992
International Application No. PCT/US1991/007906
International Filing Date 31.10.1991
Chapter 2 Demand Filed 02.06.1992
IPC
G PHYSICS
01
MEASURING; TESTING
H
MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
9
Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29
Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
04
Analysing solids
11
by measuring attenuation of acoustic waves
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29
Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
04
Analysing solids
12
by measuring frequency or resonance of acoustic waves
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29
Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
44
Processing the detected response signal
46
by spectral analysis, e.g. Fourier analysis
G01H 9/00 (2006.01)
G01N 29/11 (2006.01)
G01N 29/12 (2006.01)
G01N 29/46 (2006.01)
CPC
G01H 9/008
G01N 2291/017
G01N 29/11
G01N 29/12
G01N 29/449
G01N 29/46
Applicants
  • UNIVERSITY OF ROCHESTER [US/US]; 518 Hylan Building Rochester, NY 14627, US
Inventors
  • PARKER, Kevin, J.; US
  • LERNER, Robert, M.; US
  • HUANG, Sung-Rung; US
Agents
  • WIGMAN, Victor, M.; Wigman & Cohen Suite 200 Crystal Square 3 1735 Jefferson Davis Highway Arlington, VA 22202, US
Priority Data
608,38902.11.1990US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) USING DOPPLER MODULATION PARAMETERS FOR AMPLITUDE ESTIMATION
(FR) UTILISATION DE PARAMETRES DE MODULATION DOPPLER POUR ESTIMER L'AMPLITUDE DE VIBRATIONS
Abstract
(EN)
A system for using Doppler modulation parameters for producing an estimation of the vibration amplitude of an object under investigation is disclosed in which a low frequency vibration source is used to force the oscillation of the object under investigation and a coherent or pulsed ultrasound imaging system is utilized to detect the spatial distribution of the vibration amplitude of the object in real-time. The reflected Doppler shifted waveform generated by reflecting the ultrasound waves off of the vibrating object under investigation is used to compute the vibration amplitude and frequency of the object using two alternative methods, either on a frequency domain estimator basis or on a time domain estimator basis.
(FR)
L'invention se rapporte à un système qui utilise des paramètres de modulation Doppler pour produire une estimation de l'amplitude des vibrations d'un objet en cours d'examen et dans lequel une source de vibrations basse fréquence est utilisée pour entraîner une oscillation forcée de l'objet en cours d'examen et un système d'imagerie ultrasonore cohérent ou pulsé est utilisé pour détecter la répartition spatiale de l'amplitude des vibrations de l'objet en temps réel. La forme d'onde à décalage Doppler réfléchie, qui est générée par réflexion des ondes ultrasonores contre l'objet vibrant en cours d'examen, est utilisée pour calculer l'amplitude des vibrations et la fréquence de l'objet, grâce à l'utilisation de deux méthodes alternatives, soit sur une base d'estimateur dans le domaine fréquentiel soit sur une base d'estimateur dans le domaine temporel.
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