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    • 36. 发明公开
    • EINRICHTUNG UND VERFAHREN ZUR SCHNEE- UND EISMELDUNG
    • EINRICHUNG UND VERFAHREN ZUR SCHNEE-UND EISMELDUNG
    • EP0970457A1
    • 2000-01-12
    • EP98912386.4
    • 1998-02-25
    • TEKMAR ANGEWANDTE ELEKTRONIK GmbH
    • LATARIUS, Hans
    • G08B19/02
    • G08B19/02
    • The invention relates to a device for detecting snow and ice which has a sensor arrangement (11) comprising a humidity sensor (13) and an ambient temperature sensor (12). An evaluator switch is controlled according to a humidity sensor- measured variable, producing a control signal at set humidity values for defrosting a surface which is being monitored for snow and ice. The ambient temperature sensor (12) activates the humidity sensor (13) within a temperature range of between +2 °C and -12 °C. The humidity sensor (13) itself has a PTC heating element, the current consumption of said heating element being used as a measure of humidity. Both the ambient temperature sensor (12) and the humidity sensor (13) are positioned at a mutual distance in a longitudinally extended sensor cartridge (14) made of plastic. The temperature sensor (12) is thermally decoupled from the PTC heating element. The PTC heating element is built into a metal sleeve in such a way that it is corrosion and humidity proof.
    • 本发明涉及一种用于检测雪和冰的设备,其具有包括湿度传感器(13)和环境温度传感器(12)的传感器装置(11)。 评估开关根据湿度传感器测量的变量进行控制,在设定的湿度值下产生控制信号,用于对正在监测的冰雪表面进行解冻。 环境温度传感器(12)在+ 2°C和-12°C之间的温度范围内激活湿度传感器(13)。 湿度传感器(13)本身具有PTC加热元件,所述加热元件的电流消耗用作湿度的量度。 环境温度传感器(12)和湿度传感器(13)都在由塑料制成的纵向延伸的传感器盒(14)中以相互距离定位。 温度传感器(12)与PTC加热元件热分离。 PTC加热元件以防腐和防潮的方式内置于金属套内。