G - Physics – 01 – B
Patent
G - Physics
01
B
G01B 17/02 (2006.01) G01F 1/66 (2006.01)
Patent
CA 2718482
A method for measuring the thickness of a pipe wall is provided. The method includes the steps of: 1) emitting ultrasonic signals into the pipe wall at one or more frequencies below 1 MHz and receiving reflected ultrasonic signals, and providing a sensor signal representative of the received reflected signals, including a first received reflected signal and a second received reflected signal; 2) providing a first model signal representative of the first received reflected signal and a second model signal representative of the second received reflected signal; 3) correlating the received reflected signals to the model signals, including varying a time delay between the model signals, until the model signals separated by the time delay substantially agree with the received reflected signals; and 4) determining the thickness of the pipe wall using the time delay.
Linvention concerne un procédé pour mesurer lépaisseur dune paroi de tuyau. Le procédé consiste à : 1) émettre des signaux ultrasonores dans la paroi de tuyau à une ou plusieurs fréquences en dessous de 1 Mhz et recevoir des signaux ultrasonores réfléchis, et fournir un signal de capteur représentatif des signaux réfléchis reçus, comprenant un premier signal réfléchi reçu et un second signal réfléchi reçu; 2) fournir un premier signal modèle représentatif du premier signal réfléchi reçu et un second signal modèle représentatif du second signal réfléchi reçu; 3) corréler les signaux réfléchis reçus aux signaux modèles, comprenant la variation dun retard de temps entre les signaux modèles, jusqu'à ce que les signaux modèles séparés par le retard de temps saccordent sensiblement avec les signaux reçus réfléchis; et 4) déterminer lépaisseur de la paroi de tuyau en utilisant le retard de temps.
Expro Meters Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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