A NOVEL ELECTRONIC SYSTEM FOR MEASURING WET LEVEL ON A RUNWAY IN AIRPORTS

摘要

A various factors threat the aviation accidents, the most important are due to certain runway issues especially runway wetness. The runway is considered "wet'' when the depth of water on it is less than 3 mm, according to the International Civil Aviation Organization (ICAO) flight manuals. If the depth is more than 3 mm, the runway comes in the category of "slippery" or "contaminated." In our proposed system we have designed a Single Plane Patch Capacitive (SPPC) sensor which could determine the wetness conditions at millimetre precision. In our designed SPPC sensor, the parallel plate capacitance effect is achieved on a single plane itself. The sensor operates in the temperature range of 0 degree Celsius to 50 degrees Celsius. Since the designed sensor is so compact, it could be easily mounted in the existing Inset Light casing which is already there on the runway and so no extra casing are required to mount the sensor. The electronic data conversion circuit for the sensor is also fitted inside the light casing and the power is tapped from it