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1. WO2011007315 - A SYSTEM AND METHOD FOR MEASURING A RESONANCE FREQUENCY OF A TUBE

Publication Number WO/2011/007315
Publication Date 20.01.2011
International Application No. PCT/IB2010/053190
International Filing Date 13.07.2010
IPC
G01H 13/00 2006.01
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
13Measuring resonant frequency
CPC
A61B 5/02007
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
02Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
02007Evaluating blood vessel condition, e.g. elasticity, compliance
A61B 5/02133
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
02Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
021Measuring pressure in heart or blood vessels
02133by using induced vibration of the blood vessel
A61B 5/08
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
08Detecting, measuring or recording devices for evaluating the respiratory organs
A61B 8/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
A61B 8/0891
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
08Detecting organic movements or changes, e.g. tumours, cysts, swellings
0891for diagnosis of blood vessels
G01H 13/00
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
13Measuring resonant frequency
Applicants
  • KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL]/[NL] (AllExceptUS)
  • BRAND, Maarten, Leonardus, Christian [NL]/[CN] (UsOnly)
  • DONG, Liang [CN]/[CN] (UsOnly)
  • DU, Juan [CN]/[CN] (UsOnly)
Inventors
  • BRAND, Maarten, Leonardus, Christian
  • DONG, Liang
  • DU, Juan
Agents
  • KROEZE, John
Priority Data
200910160418.816.07.2009CN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A SYSTEM AND METHOD FOR MEASURING A RESONANCE FREQUENCY OF A TUBE
(FR) SYSTÈME ET PROCÉDÉ DE MESURE D'UNE FRÉQUENCE DE RÉSONANCE D'UN TUBE
Abstract
(EN)
The invention proposes a system for measuring a resonance frequency of a tube. The system comprises: - an oscillating unit (21) for oscillating the tube at a plurality of oscillation frequencies, respectively; - a detecting unit (22) for detecting a time delay of transmitting a pressure pulse from a first position to a second position in the tube when the tube is oscillated at each oscillation frequency, wherein, when the tube is oscillated at each oscillation frequency in a specific oscillation frequency range of the plurality of oscillation frequencies, the detecting unit (22) detects a variation of the time delay - a determining unit (23) for determining a maximal variation of the time delay when the tube is oscillated at the oscillation frequencies in the specific oscillation frequency range; and - an indicating unit (24) for indicating an oscillation frequency corresponding to the maximal variation of the time delay, being a resonance frequency of the tube.
(FR)
L'invention propose un système de mesure d'une fréquence de résonance d'un tube. Le système comprend : une unité d'oscillation (21) destinée à faire osciller le tube à plusieurs fréquences d'oscillation, respectivement; une unité de détection (22) destinée à détecter un retard de transmission d'une impulsion de pression d'une première position à une seconde position dans le tube lorsque le tube est amené à osciller à chaque fréquence d'oscillation, l'unité de détection (22), lorsque le tube est amené à osciller à chaque fréquence d'oscillation dans une plage de fréquences d'oscillation spécifique parmi plusieurs fréquences d'oscillation, détectant une variation du retard, une unité de détermination (23) destinée à déterminer une variation maximale du retard lorsque le tube est amené à osciller aux fréquences d'oscillation dans la plage de fréquences d'oscillation spécifique, et une unité d'indication (24) destinée à indiquer qu'une fréquence d'oscillation correspondant à la variation maximale du retard est une fréquence de résonance du tube.
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