System for detection of snow and/or ice on railway tracks has sensor formed by plate capacitors electrically connected in parallel and arranged vertically and parallel to one another, with upwards projecting section on upper edge

摘要

System for the detection of snow and/or ice on railway tracks, especially for the weather-dependent operation of a points heater, includes a sensor (1), the capacitance of which changes with the depositing of snow and/or ice and which is sensed by computing electronics (3). The sensor is formed by several plate capacitors electrically connected in parallel, the plates (4,4',4") of which are arranged vertically and parallel to one another and on their upper edge each have a section (5) which project upwards in relation to the side edges.