Abrégé

A method and device for determining the freezing temperature of an ice-water mixture on a road surface. Reference measurements of ice-to-water ratios in dependence on road temperatures for different salt contents of reference ice-water mixtures are provided to the device. The thickness of a water layer on the road surface is detected and the thickness of an ice layer of the road surface is detected by the device and method. From the detected thickness of the water layer and the detected thickness of the ice layer, an ice-to-water ratio of the ice-water mixture is determined. The temperature of the road surface is also detected. The freezing temperature of the ice-water mixture is determined by the device and method from the determined ice-to-water ratio and the detected temperature by means of the provided reference measurements.

Classes IPC  ?

• G01K 11/30 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou utilisant la mesure de l'effet d'un matériau sur un rayonnement X, un rayonnement gamma ou un rayonnement corpusculaire
• G01N 25/06 - Analyse en mesurant la variation du point de congélation
• G01N 25/04 - Recherche ou analyse des matériaux par l'utilisation de moyens thermiques en recherchant le frittage du point de ramollissement
• G08B 19/02 - Alarmes réagissant à la formation ou à la formation escomptée de la glace