| 摘要 |
PURPOSE:To facilitate easy maintenance and to improve the operation efficiency of an unmanned guided car, by storing the distance information to the guided car in stead of marker detection, and estimating a contact among plural guided cars in an interference zone, etc. CONSTITUTION:Unmanned guided cars MB and MC are operated with control along the same routes RA-RC. For these routes RA-RC, station markers a-c are attached only at positions of stations A-C for loading and unloading goods. At the same time, the distance information from reference positions of the markers a-c through an interference zone 2 of the junction area and end points a-c is previously stored to the cars MB and MC. When these cars are operated, the time during which the car reaches the zone 2, etc. is calculated from the speed of the car and the information on the distance traveled. Then the arrival times are compared with each other between both cars. Based on the result of comparison, a deceleration command is given to the slower car to avoid a contact between both cars in the zone 2, etc. |
