Pressure sensitive paint system control

Details Pressure sensitive paint system control Pressure sensitive paint system control

G - Physics

01

L

G01L 11/02 (2006.01) G01L 1/24 (2006.01) G01M 9/06 (2006.01)

Patent

CA 2438770

The present invention provides an apparatus, system and method which enables a determination of pressure on a surface which is coated with a pressure sensitive paint which, when flashed with light, exhibits return light with a decay time constant as a function of surface pressure. The system controls a light source which is adapted to emit a train of light pulses directed at the coated surface and controls a camera adapted to collect light level data from the surface. Further, a synchronizer is used to provide timing and control of the light source and the camera in which the synchronizer enables the light source and subsequently enables the camera to collect light level data in first and second gate periods. A decay time constant is determined from the data collected in the first gate period and the second gate period.

L'invention concerne un appareil, un système et un procédé qui permettent de déterminer la pression sur une surface revêtue d'une peinture sensible à la pression, laquelle, lorsqu'elle est exposée à un éclair lumineux, présente une lumière de retour, le temps de descente étant constant en tant que fonction de la pression superficielle. Le système commande une source lumineuse qui émet un train d'impulsions lumineuses dirigé sur la surface revêtue. Il commande en outre une caméra qui recueille les données de niveau de lumière de la surface. On utilise également un synchroniseur qui synchronise et commande la source lumineuse et la caméra dans laquelle le synchroniseur active la source lumineuse et, par la suite, la caméra pour recueillir les données de niveau de lumière dans les première et seconde périodes de portes. On détermine le temps de descente constant à partir des données recueillies au niveau des première et seconde périodes de portes.

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