Processing

Please wait...

Settings

Settings

Goto Application

1. EP2660579 - Ultrasonic sensor system and method

Office European Patent Office
Application Number 13171323
Application Date 16.07.2009
Publication Number 2660579
Publication Date 06.11.2013
Publication Kind B1
IPC
G01M 3/00
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
3Investigating fluid tightness of structures
G01H 11/08
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
11Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
06by electric means
08using piezo-electric devices
CPC
G01H 11/08
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
11Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
06by electric means
08using piezo-electric devices
G01M 3/243
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
3Investigating fluid-tightness of structures
02by using fluid or vacuum
04by detecting the presence of fluid at the leakage point
24using infrasonic, sonic, or ultrasonic vibrations
243for pipes
Applicants ROSEMOUNT MEASUREMENT LTD
Inventors ROSE DARREN MICHAEL
HURREY ROGER THOMAS
Designated States
Priority Data 09785345 16.07.2009 EP
0813014 16.07.2008 GB
Title
(DE) Ultraschallsensorsystem und Verfahren
(EN) Ultrasonic sensor system and method
(FR) Capteur d'ultrasons et procédé de caption
Abstract
(EN)
An ultrasonic sensor (110) for detecting a source of airborne ultrasound within a detection frequency range, which ultrasonic sensor (110) is characterised by an undamped piezoelectric crystal (114) held in a material (124) which permits substantially uninhibited deformation of said piezoelectric crystal (114) in response to incident ultrasound within said detection frequency range so that a voltage is generated between two faces thereof, but which material (124) inhibits vibration of said piezoelectric crystal (114) when subjected to vibrations outside said detection frequency range.

(FR)
L’invention concerne un détecteur ultrasonique (10) qui peut être monté en position afin de surveiller une zone et détecter une source d’ultrasons portés par l’air, lequel détecteur comprend un capteur (20) pour détecter un signal de son ultrasonique, caractérisé par un transducteur (64) conçu pour générer un signal de son ultrasonique en bande large qui sera reçu par ledit capteur (20), ce qui permet audit détecteur ultrasonique d’effectuer un autotest.