| 摘要 |
<p>PROBLEM TO BE SOLVED: To conduct such zone control as to travel only a preceding electric car by stopping a subsequent electric car even in the condition that two electric cars for conveyance are present in one small zone. SOLUTION: Respective first signal lines Xa, Xb are connected to the second signal lines Yb, Yc of the next small zone, and in respective small zones 19a to 19c, control starting command markers 22a to 22c and control finish command markers 23a to 23c are disposed. A controller 18 for an electric car closes a contact (b) of (1) relay CR3 after a marker detector 17 detects the markers 22a to 22c. If (2) relay CR1 is energized, the electric car is stopped. If (3) relay CR1 is not energized, the contact (b) of the relay CR2 is closed and while the electric car is being stopped, it is started to travel. After the zone control is started and when the marker detector 17 detects the markers 23a to 23c, the contact (b) of the relay CR2 and the contact (b) of the relay CR3 are reset to an open circuit condition to terminate the zone control.</p> |
