| 摘要 |
PROBLEM TO BE SOLVED: To provide a road snow-removal navigation system capable of providing road network data superior in quickness, flexibility and expansion capability, preventing damaging accidents due to snow-removal work, improving work efficiency, facilitating the snow-removal work and surely clearing of snow to the road shoulder. SOLUTION: The system has a road network memory means 10 storing road network data whose all interior angles are composed of polygon intersections within 180 degrees and linear paths of reversible vector segments and road images are liked, a position coordinate gaining means 11 gaining the position coordinates of a snowplow, an intersection in/out discrimination means 13 storing and wasting the intersection number, discriminating which of in and out of the intersection the snowplow positions and discriminating the leaving direction of the snowplow from the intersection, a vector segment specifying means 14 specifying the vector segment in the case that the snowplow positions out of the intersection, a measured point gaining means 15 obtaining the measured point on the vector segment, an image direction specifying means 16 specifying the image direction in the case the snowplow positions in the intersection, an image reproduction means 17 reproducing a road image linked to the measured point and image direction, and an image indication means 18 displaying it. |
