| 摘要 |
PURPOSE:To stop carrying trucks while being sufficiently approached together even when the collision between the carrying trucks is avoided surely by discriminating the stop distance in advance based on distance detection information and stopping automatically the carrying truck when the stop mark is detected through the discriminating state. CONSTITUTION:Plural stop marks m4 displaying carrying truck stop position are sticked to upper face of a light reflecting tape 4 with a little larger pitch than the front and rear width of the carrying truck. Then a light emitting section Ta projecting light toward the succeeding carrying truck and a photodetector Tb receiving the light therefrom are provided to the carrying truck A while they are shared to the front and rear end of the car body and the distance between the carrying truck A and the preceding carrying truck is detected based on the photodetection amount fluctuation of the photodetector Tb. Further, detection information of the photodetector Tb is transmitted to a host controller 7 so as to discriminate that the distance between the trucks is larger than adjacent mark distance and a stop distance smaller than twice of the mark interval and a deceleration running command signal is transmitted to a digital servo controller 9 based on the discriminating information. |
