PURPOSE: To use a track in common, to avoid collision of respective robots by a simple control system and to prevent the practical interruption of the command operation of the respective robots in a multi-robot system in which many individually controlled robots travel. ;CONSTITUTION: When the approach of a first robot camera R1 operated corresponding to a command information A for sampling information to be supplied to a client (a) and a second robot camera R2 operated corresponding to the command information B for sampling the information to be supplied to the client (b) is detected in an approach sensor 7, a command information changeover processing for supplying the command information A to the second robot camera R2 and simultaneously supplying the command information B to the first robot camera R1 and sampling information changeover for changing video signals from the first robot camera R1 to the ones for the client (b) and simultaneously changing the video signals from the second robot camera R2 to the ones for the client (a) are processed in relation.;COPYRIGHT: (C)1996,JPO
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