A device (2) for evaluating the state of wetting of a surface (8) includes an emitter (4) emitting a beam (F, F1, F2) which is incident in the direction of the surface (8) and a single element (12) for receiving the beam reflected by the surface (8). The device includes: A polarization (10, 13, 14) including a first polarization zone (13) and a second polarization zone (14) designed to polarize a first part (F1) and a second part (F2) of the beam in a first and a second polarization direction; and a evaluation element (28) for calculating a polarization ratio between the polarizations of the first part of the reflected beam and the second part of the reflected beam to evaluate the state of wetting of the surface (8). Also described is an evaluation process and an associated indicator device.
DISPOSITIF D'ÉVALUATION DE L'ÉTAT DE MOUILLAGE D'UNE SURFACE, PROCÉDÉ D'ÉVALUATION ET DISPOSITIF D'INDICATION ASSOCIÉ
DEVICE FOR EVALUATING THE STATE OF WETTING OF A SURFACE, EVALUATION METHOD AND ASSOCIATED INDICATION DEVICE
VORRICHTUNG ZUR BEURTEILUNG DES BENETZUNGSZUSTANDES EINER OBERFLÄCHE, BEURTEILUNGSVERFAHREN UND ENTSPRECHENDES ANZEIGEVERFAHREN
2019-05-15
Patent
Electronic Resource
French
IPC: | G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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