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1. EP2454568 - A SYSTEM AND METHOD FOR MEASURING A RESONANCE FREQUENCY OF A TUBE

Office European Patent Office
Application Number 10740750
Application Date 13.07.2010
Publication Number 2454568
Publication Date 23.05.2012
Publication Kind B1
IPC
G01H 13/00
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
13Measuring resonant frequency
A61B 5/08
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
08Measuring 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
CPC
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
G01H 13/00
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
13Measuring resonant frequency
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 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
Applicants KONINKL PHILIPS ELECTRONICS NV
Inventors BRAND MAARTEN LEONARDUS CHRISTIAN
DONG LIANG
DU JUAN
Designated States
Priority Data 200910160418 16.07.2009 CN
2010053190 13.07.2010 IB
Title
(DE) SYSTEM UND VERFAHREN ZUR MESSUNG DER RESONANZFREQUENZ EINER RÖHRE
(EN) A SYSTEM AND METHOD FOR MEASURING A RESONANCE FREQUENCY OF A TUBE
(FR) SYSTEME ET PROCEDE DE MESURE D' UNE FREQUENCE DE RESONANCE 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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