High-reliability vehicle control system
First Claim
1. A vehicle control system comprising:
- at least one control center havinga first computer system capable of generating first control data telegrams and responding to second control data telegrams; and
a plurality of track-bound vehicles each havingon-board control equipment in two-way communication with said first computer system to receive said first telegrams and to transmit said second telegrams;
said equipment includingfirst means to receive said first telegrams,second means to transmit said second telegrams,on-board units to be controlled,third means to determine the speed and position of an associated one of said vehicles,two identical computer systems each coupled to said first, second and third means and said units, said two computer systems receiving said first telegrams, status reports from said units and speed and position information from said third means to generate said second telegrams and to control said units in response to said first telegrams, andswitching logic coupled to each of said two computer systems, said units and said second means responsive to a first output signal of one of said two computer systems selected by said first telegrams for control of said units and for delivery of said second telegrams to couple said second telegrams from said selected one of said two computer systems to said second means for transmission, to couple a second output signal of said selected one of said two computer systems to said units for control thereof, and to enable said first computer system to check the operation of each of said two computer systems by means of information contained in said second telegram.
1 Assignment
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Accused Products
Abstract
A vehicle control system is disclosed which comprises a center and a plurality of vehicles carrying two redundant computer systems as on-board control equipment. Each of the computer systems consists of two computers which compare their results and deliver them only if they agree. Which of the two computer systems processes the telegrams received from the center and compiles telegrams to the center from messages of the on-board units is determined from the center. At regular intervals switchover to the other computer system is effected to check whether the latter is functioning correctly or not. Any failure in one computer system need no longer result in the application of the emergency brakes. However, a fault message is sent to the center, and the vehicle is directed to the maintenance shop at the end of the movement.
15 Citations
7 Claims
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1. A vehicle control system comprising:
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at least one control center having a first computer system capable of generating first control data telegrams and responding to second control data telegrams; and a plurality of track-bound vehicles each having on-board control equipment in two-way communication with said first computer system to receive said first telegrams and to transmit said second telegrams; said equipment including first means to receive said first telegrams, second means to transmit said second telegrams, on-board units to be controlled, third means to determine the speed and position of an associated one of said vehicles, two identical computer systems each coupled to said first, second and third means and said units, said two computer systems receiving said first telegrams, status reports from said units and speed and position information from said third means to generate said second telegrams and to control said units in response to said first telegrams, and switching logic coupled to each of said two computer systems, said units and said second means responsive to a first output signal of one of said two computer systems selected by said first telegrams for control of said units and for delivery of said second telegrams to couple said second telegrams from said selected one of said two computer systems to said second means for transmission, to couple a second output signal of said selected one of said two computer systems to said units for control thereof, and to enable said first computer system to check the operation of each of said two computer systems by means of information contained in said second telegram. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification