| 摘要 |
PROBLEM TO BE SOLVED: To improve the efficiency of a carrying vehicle system. SOLUTION: When a carrying vehicle scheduled to arrive first at a load port for loading up cargos by a carrying instruction is a loaded carrying vehicle and is scheduled to unload cargos before arriving at the load port for loading up cargos and an empty carrying vehicle exists within a predetermined distance after the carrying vehicle scheduled to arrive first, a carrying command is assigned to the empty carrying vehicle, and when an empty carrying vehicle does not exist within the predetermined distance after the carrying vehicle scheduled to arrive first, the carrying command is assigned to the carrying vehicle scheduled to arrive first. Consequently useless time for stopping the succeeding empty carrying vehicle during the period of loading up cargos by the carrying vehicle scheduled to arrive first can be eliminated. On the downstream side of the load port for loading up cargos, an empty carrying vehicle moves ahead and the loaded carrying vehicle succeeds, so that the empty carrying vehicle can be assigned to load-up of cargos. COPYRIGHT: (C)2010,JPO&INPIT
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