Patent ID: 9214088
Filing Date: 2015-12-15
Classification: G01C,G01S,G08G

Abstract:
1. An obstacle information system for a helicopter with a warning information processor and a display unit of any obstacle within a predetermined minimum distance d 4 with regard to the helicopter, the warning information processor being fed with information related to detected distance d 5 and direction of the at least one obstacle with regard to the helicopter detected by an obstacle sensor system to compute and prepare the information for presentation on the display unit, the display unit comprising at least an indication area with two sub-areas, a central circular surface and a concentric ring-shaped area around the circular surface, the circular surface being used exclusively for alerts, the ring-shaped area being used for both warnings as well as alerts and the repartition in the indication area of the circular surface and ring-shaped area being dependent on the detected distance d 5 of the at least one obstacle with regard to the helicopter, characterized in that coloring is provided at least at a section of the ring-shaped area with an inner radius r w , r w being the result of a projection g w of the at least one obstacle from a section d 3 of a distance scale onto a section d 3 * of an indication scale, the projection providing a smaller inner radius r w of the colored ring-shaped surface the closer the obstacle is to an alerting distance d 1 +d 2 , with d 1 being the radius of a concentric inner ring shaped alert zone z a , d 1 +d 2 being an inner warning radius and d 1 +d 2 +d 3 =d 4 being an outer warning radius of an outer ring shaped warning zone z w .