Process for standardising the intensity of optical sensors...

Details Process for standardising the intensity of optical sensors... Process for standardising the intensity of optical sensors...

G - Physics

01

R

G01R 35/02 (2006.01) G01R 15/24 (2006.01) G01R 33/032 (2006.01)

Patent

CA 2260055

A process uses for intensity standardisation purposes the -/+ division but forms the quotients from the signal difference and does not form the signal sum from the intensity signals (L1, L2) generated by the sensor but from signals (L1', L2') derived therefrom which have periodically oscillating intensity components (I1'AC, I2'AC) of the same amplitude (/A/). The invention largely combines the advantages of the -/+ divison and of the AC/DC division.

Le procédé utilise la division -/+ pour normaliser l'intensité, mais forme les quotients à partir de la différence entre les signaux et ne forme pas la somme des signaux à partir des signaux d'intensité (L1, L2) générés par le capteur mais à partir de signaux (L1', L2') dérivés de ceux-ci qui présentent des composantes d'intensité (I1'AC, I2'AC) périodiquement variable et de même amplitude (/A/). L'invention réunit en grande partie les avantages de la division -/+ et de la division CA/CC.

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