| 摘要 |
PURPOSE:To detect the position of a moving object without requiring civil engineering work for an already existing yard by using absolute address display marks and movement detecting marks added to the road surface of the moving object and a device which recognizes these marks. CONSTITUTION:An image receiving camera 2 is operated when a crane is run left, and an image receiving camera 3 is operated when it is run right. Marks ''5'' and ''6'' added to the ground are number marks for absolute address display based on a reference point and are decoded through cameras to detect a passing address. The absolute address is detected with a number, and a running position in the address where both marks A and B are recognized simultaneously is determined preliminarily as the center position in the address, thereby obtaining easily the center point of the address. When the moving object is driven in the direction of an arrow L, position detection and deceleration command are possible if a position where only the mark B is recognized is defined as the deceleration start position of the crane 1. |
