Fog on high-speed motorways can be a deadly and expensive menace. This article outlines an automatic system of fog detection and gauging to allow appropriate accident prevention steps to be taken. Two separate optical sensors gauge the visibility meter measures the fog density as a light scattering function, and a background light meter simulates the sensitivity of the human eye to prevailing lighting conditions. The combined signals are transmitted to a control room for analysis and display/alarm.
Automatic fog warning
Automatische Nebelwarnung
Systems Technology ; 22 ; 26-31
1975
6 Seiten, 10 Bilder, 2 Quellen
Aufsatz (Zeitschrift)
Englisch
NEBEL , WARNSYSTEM , AUTOBAHN , SENSOR , OPTISCHE WAHRNEHMUNG , LICHTSTREUUNG , MESSUNG , POLIZEI
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