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Westrace System Architecture. •:nm'm.
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Westrace MKII System Architecture – Block Diagram.
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Input Module. Processor Module (PM). Output Module.
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Channel A. Channel B. Channel A & B are diverse 2oo2 Processing Channel.
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Micro Processor A. Channel A. Channel B. Micro Processor B.
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Micro Processor D. Microprocessor D manages communications and diagnostics.
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Channel A. Channel B. Channel A. Channel A & B are diverse 2oo2 Processing Channel.
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Channel A. Channel B. Micro Processor A. Micro Processor B.
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Vital and Non Vital Input like. Track Detection. ATS,HMI.
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Channel A. Channel B. Micro Processor A. Micro Processor B.
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Channel A. Channel B. Micro Processor A. Micro Processor B.
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Channel A. Channel B. Micro Processor A. Micro Processor B.
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Channel A. Channel B. Micro Processor A. Micro Processor B.
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Channel A. Channel B. Micro Processor A. Micro Processor B.
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Vital and Non Vital output like. Point Control. Channel A.
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Channel A. Channel B. Micro Processor A. Micro Processor B.
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Channel A. Channel B. Micro Processor A. Micro Processor B.
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Westrace System Architecture Block Diagram. Other Westrace MKII Processor.
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WESTRACE Application Data. The WESTRACE hardware is controlled by the Application Data. The Application Data is the combination of the system configuration and a set of boolean logic statements that define the working of a specific WESTRACE interlocking ..
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Westrace System and Safety advantage. WESTRACE MkII is a safety critical, processor based railway signalling system. It is generally used for interlockings. It is a suitable for passenger and freight railways and has been independently certified to meet the stringent safety principles for this equipment. WESTRACE MkII : Advange meets world Safety Integrated Level 4(SIL 4). features modularity; is easy to maintain; is robust, and; Has cost advantages over conventional interlockings (Reduction in use of relays based interlocking) The system encompasses all of these features but safety is foremost. WESTRACE equipment is suitable for safety critical applications. Each WESTRACE module uses a 2oo2 (2-out-of-2) safety architecture. Modules use two processing or hardware paths with separate processors. Both paths must agree before an active input will be accepted or an active output driven. Modules that generate different states are automatically shut down. The only impact that failure or removal of a module has on the interlocking is the absence of it’s associated inputs and outputs. The interlocking continues operation..