System comprising a processor

Details System comprising a processor System comprising a processor

1994-11-17

1996-04-02

Beausoliel, Jr., Robert W.

Excavating

371 681, G01R 3128, G06F 1100

Patent

active

055048609

ABSTRACT:
An interlocking system for a railway comprises a plurality of processors (A, B and C), the system having an input (1) for receiving input information and an output (2) for providing control information. Each of the processors is adapted to test itself to check that it is operating correctly and each of the processors is also adapted to test another of the processors to check that the other processor is operating correctly, each of the processors also being so tested by another of the processors. The system is shut down or put into a more restricted mode of operation if a fault in its operation is detected, either as a result of a processor's self-testing routine or as a result of one of the processors detecting that another processor is not operating correctly. This achieves the integrity of a "dual-channel" system with only a single "channel" of hardware.

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