US Patent 9221606 Goods transport facility

A goods transport facility provided with a detected body installed on the ground side for providing stop control. A detected-body detector on a mobile assembly detects the presence of the detected body. The goods transport facility is switchable between a first and a second control status so that when a fire detector means detects that no goods are on fire, the first control status is maintained. Once the fire detector detects a fire, the status is switched to the second control status. In the first control status, a mobile assembly control provides travel control using an optical distance-measuring sensor to control the actuation of the mobile assembly. In the second control status, the actuation of the mobile assembly travels until detected by the detected-body detector for a goods storage section to which goods are to be transferred, and brought into alignment with the target travel position.