Control apparatus of unmanned autonomous operating vehicle

An apparatus for controlling an unmanned autonomous operating vehicle having an electric motor supplied with power from a battery for operating an operating machine, prime movers for driving wheels, and magnetic sensors for detecting intensity of a magnetic field of an area wire, the vehicle being controlled to run about in an operating area defined by the area wire through wheels driven by the prime movers to perform an operation using the operating machine and to return to a charging device installed on the area wire so as to charge the battery,

• wherein the improvement comprises:
• an area wire distance detector adapted to detect a distance from the area wire based on the detected intensity of the magnetic field detected by the magnetic sensors;
• and
• a returning trajectory selector adapted to select a different one of a plurality of returning trajectories defined along the area wire in advance with respect to distances from the area wire, whenever the vehicle is to be returned to the charging device installed in the operating area to charge the battery.