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Synthesis and optimization of railway signalling layouts Bjrnar Luteberget FMCAD student forum, Oct 31, 2018 Layout of signals and detectors Layout of signals and detectors Layout of signals and detectors Layout of signals and detectors

  1. Synthesis and optimization of railway signalling layouts Bjørnar Luteberget FMCAD student forum, Oct 31, 2018

  2. Layout of signals and detectors

  3. Layout of signals and detectors

  4. Layout of signals and detectors

  5. Layout of signals and detectors

  6. Layout of signals and detectors

  7. Verifjcation of layout capacity Track Input ✗ plan Layout (signals Verifj- and cation detectors) Input Capacity ✓ specs. Manual Automatic (engineering)

  8. Verifjcation of layout capacity Synthesis Initial guess Feedback Track Input ✗ plan Layout (signals Verifj- and cation detectors) Input Capacity ✓ specs. Manual Automatic (engineering)

  9. Branching: ( discrete planning) ◮ Initial guess: Maximal schedulability design. Guard every branch ◮ Optimization: fjnd unneccessary signals by planning. Non-branching: ( local search) ◮ Add/remove signals to improve timing. ◮ Move signals locally to improve timing.

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