virtual signal sighting walkover
TRANSCRIPT
Virtual signal sighting walkover Troy Burton & Michael Gardiner
Signal design affords train drivers adequate advance sighting and ensures a clear and unambiguous message is received.
Objective
Effective tool for designers, operators and signal sighting committees to resolve sighting issues well in advance of commissioning and reducing the risk of delays and significant & costly rework.
3D VISUALISATION
• 2D methods
• Engineering drawing based
• Shortcomings for complex sighting arrangements
• Significant risk remains until final walkover/commissioning
Traditional methods
Adjacent new twin tracks constructed Height difference Signal on adjacent existing track Traditional methods carried out but issue not detected Some delays and construction re work required at
final commissioning stage
Example
2
2
Trackstar Richlands to Springfield Project
• 9.5km of electrified twin track extension
• In excess of 1.5km of elevated structures
• 2 new stations
• Parallel to Centenary Highway, similar level
• Bi directional signalling
• 140km/h max. design speed
• Qld Rail – client, asset owner and operator
• Under construction
Typical obstructions – OHLE, station structures, sighting boards
Parallel tracks – typical 4m centres
Background interference – adjacent highway, vehicle headlights
Traditional methods not robust enough
Potential risk significant – visual barriers/screens
Key issues
3D visualisation method • Realistic representation crucial • Signal sighting committee support of
process • Reduce risk at final commissioning
Solution
• Linear Workflow = better (realistic) lighting • Autodesk 3Ds Max – Main visualisation tool
Why is accurate lighting needed?
Real world camera: Aperture Size, Shutter Speed, ISO Level
Lighting
Linear workflow: The last piece of the puzzle
Software Monitor Compensated Output
1 candle = 1 candela /m²
Red = 300 cd/m² Yellow = 350 cd/m² Green = 500 cd/m²
Complex sighting issues Identified issues early in design stage Virtual signal sighting walkover well in
advance Realistic representation Design refined (iterative) Reduced potential delay and costly
rework at final commissioning phase
Success
Want more information?
Contact
Troy Burton Leader – Mass Transit Systems +61 2 9465 5348 (Sydney) [email protected]
Michael Gardiner Senior Technical Officer- Transport +61 7 3173 8726 (Brisbane) [email protected]
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