METHOD FOR GUIDING UNMANNED VEHICLE

PURPOSE:To prevent the misguidance of an unmanned vehicle by replacing the guide path of one side with a magnetizing body of a different polarity in a part in which plural guide paths interfere with one another and switching the detection polarity of the magnetic detecting means of the unmanned vehicle to travel along the guide path in such a part. CONSTITUTION:In a foreground in which an unmanned man 14 to travel along a guide path 10 advances into a crossing 32, a current is supplied to Hall sensor 18 in order to detect the magnetizing body of an N pole, and a steering control is executed in order to travel along the induction path 10 of the N pole. When a pair of position sensors 25 and 26 simultaneously detect a pair of makers 21 and 22, the polarity of the Hall sensor 18 is inverted according to a map. Thus, the unmanned vehicle 14 detects the magnetizing body of an S pole, the steering control is executed in order to travel along a magnetizing body 10' of the S pole without being influenced by a guide path 12 of the N pole to be crossed, and the vehicle 14 advances straight as indicated by an arrow (d) on the crossing 32. After passing the crossing 32, a pair of markers 23 and 24 are simultaneously detected, the polarity of the sensor 18 is returned to the former condition according to the map. Thus, the unmanned vehicle 14 travels along the guide path 10 of the N pole.