Optical level measurement device and method

Details Optical level measurement device and method Optical level measurement device and method

G - Physics

01

F

G01F 23/292 (2006.01) G01S 17/10 (2006.01) G01S 17/88 (2006.01)

Patent

CA 2719435

A method and system for determining a level of a substance in a container, the method comprises emitting one pulse from a light source in a field of illumination toward a surface of said substance in said container. A backscatter signal of said pulse is detected by an optical detector. A lidar trace is created from said backscatter signal, said lidar trace including at least one reflection peak; A surface reflection is identified among said at least one reflection peak in said lidar trace, said surface reflection being a reflection of said pulse from said surface. The surface reflection is signal-fitted to provide a fitted surface trace. A level of said substance is determined in said container using said fitted surface trace.

L'invention concerne un procédé et un système de détermination d'un niveau d'une substance dans un contenant. Le procédé comprend l'émission d'une impulsion par une source lumineuse dans un champ d'éclairage vers une surface de ladite substance dans ledit contenant. Un signal de rétrodiffusion de ladite impulsion est détecté par un détecteur optique. Une trace lidar est créée par ledit signal de rétrodiffusion, ladite trace lidar comprend au moins un pic de réflexion. Une réflexion de surface est identifiée entre ledit ou lesdits pics de réflexion dans ladite trace lidar, ladite réflexion de surface étant une réflexion de ladite impulsion par ladite surface. La réflexion de surface est liée au signal pour donner une trace de surface définie. Un niveau de ladite substance est déterminé dans ledit contenant à l'aide de ladite trace de surface définie.

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