Vehicle location control system - uses on-board antenna communicating with marker stations based on signals above and below threshold level

摘要

A location control system for vehicles uses on board antenna communicating with marker stations located at intervals along the route. At the commencement of the path section, the antenna level lies below a threshold level (S). After a period (t1) the threshold level is exceeded and a check is made on the second antenna level. A counter marks the station and the vehicle moves during a further interval (t1-t2). At the end (t2) the process is repeated until the number of selected sections is exceeded. The process is repeated continuously.