Location identification arrangement for vehicle guidance systems

Abstract From the Canadian patent

A vehicle guidance system in which vehicles are guided along a traffic layout, includes a location identification arrangement for identifying locations along the layout and for enabling each vehicle to derive information for directing the vehicle in its movement along the traffic layout. The arrangement includes an interrogator for each vehicle including a coil which is excited by a high frequency signal, and a responder for each location including an identification signal generator for generating a signal encoded to represent an identification code for the location, a second coil located relative to the pathway for the vehicle to enable signal coupling to occur between the two coils as the …