System for safely and automatically controlling the distance between vehicles
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United States of America Patent
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Feb 14, 1995
Grant Date -
N/A
app pub date -
Dec 4, 1992
filing date -
Dec 6, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a system for automatically controlling the distance between vehicles following each other on the same drive track which includes in each vehicle a drive device, brake device, distance sensing device, vehicle speed measuring device, and control device. Paralleling the drive track are a neutral rail and a control rail. The drive device drives the vehicle. The brake device brakes the vehicle. The distance sensing device generates a distance variable. The vehicle speed measuring device measures a speed of the vehicle, and generates speed signals based thereon. The control device controls the drive device to drive the vehicle at a speed based on a speed control variable. The control device generates the speed control variable based on the distance variable. The speed control variable is less than the distance variable. The control device also controls the brake device to brake the vehicle when a speed signal is greater than a maximum permissible speed; the maximum permissible speed being dependent on the distance variable.
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