Non-contact freezing temperature determination

Details Non-contact freezing temperature determination Non-contact freezing temperature determination

G - Physics

01

N

G01N 25/06 (2006.01) E01H 10/00 (2006.01) G01B 11/06 (2006.01) G01J 5/00 (2006.01)

Patent

CA 2712855

The present invention relates to a method for determining the freezing temperature of an ice-water mixture on a road surface, comprising: providing reference measurements of ice-to-water ratios in dependence on road temperatures for different salt contents of reference ice-water mixtures; detecting a thickness of a water layer on the road surface; detecting a thickness of an ice layer of the road surface; determining an ice- to-water ratio of the ice-water mixture from the detected thickness of the water layer and the detected thickness of the ice layer; detecting the temperature of the road surface; and determining the freezing temperature of the ice-water mixture from the determined ice-to- water ratio and the detected temperature by means of the provided reference measurements.

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