SYSTEM FOR COMPUTING A STOPPING PATTERN SIGNAL FOR A VEHICLE

摘要

A system is provided for computing a stopping pattern signal for a vehicle initiated upon the vehicle passing a wayside marker in approach of a stopping point. A digital storage is provided for storing a number corresponding to the square root of the distance from the marker to the stopping point. A delta counter is provided for periodically updating the digital storage as the vehicle progresses from the wayside marker toward the stopping point, and a digital-to-analog converter is provided for converting the digital storage into an analog signal which is combined with a constant to generate a pattern signal.