2008 12 12 petit new raiway age train control technology rev 1
DESCRIPTION
india railway presentationTRANSCRIPT
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New Rail TechnologySignal and Train Control
SystemsBill Petit
www.billpetit.comRailway Age Conference
December 12, 2008
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What I’ll Talk About
How we got where we areIssues affecting application of new technologyOverview of new technology applications Particularly PTC – Whatever that
means
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How We got here – History of Train Control Part 1
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Track Warrant Control(Dark Territory)
Track Warrant Authority Limits
•Movement Authority conveyed by track warrant – Permission to occupy a “Block” of track•Verbal communication
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Automatic Block Signal (ABS)
•Two main tracks, each with an assigned direction of movement•Movement authority and operating speed conveyed by signal system•Tracks are signaled only for movement in assigned direction•Train separation and operating speed information provided by signal system
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Train Control System (TCS)(or cTc)
•Multiple main tracks, each signaled for traffic in both directions•Movement authority and operating speed conveyed by signal system•Train dispatcher controls switches and signals from distant location
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TCS with Cab Signals and Speed Control
•Multiple Main Tracks, each signaled for traffic in both directions•Movement authority and operating speed conveyed by signal system with information sent through the rails•Train dispatcher controls switches and signals from distant location•Train separation and speed limit provided by train crew and •onboard equipment
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Issues Affecting new technology applications
CostReliabilityEnvironmentalSafety Low probability, high consequence 1000’s of units in the field 30 + year lifetime
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What Do I Mean by SafetySystem Designed to correctly perform all operational requirements under normal conditionsSystem Designed to correctly perform all operational requirements under adverse conditions (environmental, system stress)
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What Do I Mean by SafetySystem does not provide more permissive outputs under failure conditions System or subsystem All single point self-revealing failures Latent (secondary) failures for non-
self-revealing failures
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Particular Issues with processor-based systems
Failures are non-linear Single transistor failure within IC
leads to an unknowable result. (weak-link behavior)
Complexity
Over-reliance on redundancy
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New Technology Systems
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Enabling Technologies
Position Locating Systems Vehicle determines its own position,
instead of relying on operator reporting or track circuits Transponders Satellite Locating Systems (e.g GPS)
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Enabling Technologies
Mobile Data Communications Ability to transmit increased amounts
of data Ability to track mobile node through
the system Can be used to convey information to
the engineer in ways other than verbal (written) orders, wayside signals or cab signals
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Enabling Technologies
Increased Processing Power Ability to support other enabling
technologies
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Technology Examples
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Electronic Train Management System (ETMS)
Implemented on BNSF on pilot projectsSafety plan approved by FRA for use as an overlay system Existing system must be maintained
and used for safetyBased on Forms-Based (train order) architecture)
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Track Warrant Control(Dark Territory)
Track Warrant Authority Limits
•Train Orders conveyed verbally and repeated for confirmation (i.e. no change)
•Plan to send digital version of text for onboard display but not approved yet.
•Train orders encoded digitally at office and sent to locomotive (unseen by engineer) and enforced by onboard system based on GPS location.•Also capable of reading status of existing wayside signals and enforcing them.
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Electronic Train Management System (ETMS)Class I railroads are moving ahead with this architecture CSX – CBTM UP – V-TMS NS - OTC
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Advanced Civil Speed Enforcement System (ACSES)
In-Service on Amtrak NorthEast CorridorBased on Cab Signal Architecture.Utilizes existing cab signal Adds onboard database of civil and infrastructure dataTransponders used for position location.
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Advanced Civil Speed Enforcement System (ACSES)
Train separation and operating speed obtained from existing cab signal infrastructureCivil speeds enforced from onboard databasePositive stop enforced with data from onboard database i.e. length of block, grade, curve, etc.
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Advanced Civil Speed Enforcement System (ACSES)
Temporary Speed Restrictions conveyed by radio from office and enforced based on onboard database.
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ACSES - The EquipmentMCPRadio
AntennaAdvanced Display Unit
…plus radio set(s) cables, serial links, brackets, connections to train brakes...
TransponderReader and
CTV box
Train borne
ACSES box(Vital on-board
Computer)
Axle generator
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Incremental Train Control System (ITCS)
In revenue service on Michigan HSR corridor and in ChinaUses cab signal based architecture Michigan – uses existing wayside
infrastructure China – uses “virtual” blocks and
signals
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Interoperable Communication-Based Signaling (ICBS)
Industry effort to provide standards for interoperability based on a signaling-based architectureSupported by Alstom, GETS, Safetran and US&SInitial set of standards approved and published in current version of AREMA Manual of Recommended Practices for Communication and Signaling
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ICBS Project
Demonstration project in process funded by FRA Supported by Alstom, GETS, Safetran
and US&S
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What we set out to doDefine Interoperability for a PTC system based on signaling principles Complete system providing stand-alone ability
to set and protect routes, deliver onboard authorities in terms of aspects, enforce onboard authorities including civil speed and pre-emptive braking (positive stop)
Focus on train control Work with interoperable comms system per RESC Basic system defined with ability to add additional
functionality as needed.
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What we didAgreed to and published architecture and interoperability recommended practices through a Professional Industry Association (AREMA)Through FRA and Private (supplier) funding Defined Test Layout to incorporate multiple
suppliers Developed Communications Router and Simulators
for Test Environment Substituted 2 sets of suppliers equipment for one of
the simulators 3rd supplier to be integrated next week
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Basic Territory for each supplier to simulate
3-10
1-10
2-10
3-20
1-20 1-401-30 1-50 1-60 1-70 1-901-80 1-100 1-110 1-120
2-20 2-30 2-40 2-50 2-60 2-70 2-80 2-90 2-100 2-110
2-120
2-130
Territory to be controlled
Territory broken into virtual blocks withvirtual signals added - layout depends on
operational needs
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3-10
1-10
2-10
3-201-20 1-401-30 1-50 1-60 1-70 1-901-80 1-100 1-110 1-120
2-20 2-30 2-40 2-50 2-60 2-70 2-80 2-90 2-100 2-1102-120
2-130
3-10
1-10
2-10
3-201-20 1-401-30 1-50 1-60 1-70 1-901-80 1-100 1-110 1-120
2-20 2-30 2-40 2-50 2-60 2-70 2-80 2-90 2-100 2-1102-120
2-130
3-10
1-10
2-10
3-201-20 1-401-30 1-50 1-60 1-70 1-901-80 1-100 1-110 1-120
2-20 2-30 2-40 2-50 2-60 2-70 2-80 2-90 2-100 2-1102-120
2-130
3-10
1-10
2-10
3-201-20 1-401-30 1-50 1-60 1-70 1-901-80 1-100 1-110 1-120
2-20 2-30 2-40 2-50 2-60 2-70 2-80 2-90 2-100 2-1102-120
2-130
GETS
Safetran
US&S
Alstom
Overall Territory with Each Supplier covering One Section
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RRR = 050, LLL = 001GETS Wayside
RRR = 050, LLL = 002SSC Wayside
RRR = 620, LLL = 001US&S Wayside
GETS SLP SSC SLP US&S SLP
Comms Simulator
CAD Simulator
Vehicle Simulator
Vehicle Simulator
Vehicle Simulator
GETS OBLP
Alstom OBLP
US&S OBLP
GETS WASSC WA US&S WA
Switch Panel(8 switches)
Switch Panel(8 switches)
Switch Panel(8 switches)
WA Simulator for > 8 inlputs
8 lines8 lines8 lines
Controls and Indications
Interoperable MessageFormats
Interoperable MessageFormats
Alstom WA
Switch Panel(8 switches)
8 lines
RRR = 620, LLL = 002Alstom Wayside
Alstom SLP
Representation of Overall Test Layout
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SLP (GETS VHLC)• Interfaces to Genisys Control Office• Processes Signaling Logic• Interfaces to SLP Protocol Converter
• Receives Block Statuses• Transmits Switch & Signal Statuses
• Interfaces to WA for Switch Control
GETS SLP Equipment Rack
Diagnostic Terminal
SLP Protocol Converter• Converts Between GE and ICBS Messaging• Uses ICBS Database for Status Mapping• Transmits Block Statuses to GE SLP• Receives Switch & Signal Statuses from GE SLP• Interfaces to Comm. Router (ICBS Network)
WA (GETS VHLC)• Interfaces to SLP
• Receives Switch Control Statuses from SLP• Transmits Switch Position Statuses to SLP
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OBLP (GETS ITCS Onboard Computer)• Location Determination Using ITCS Equivalent
Database• Enforces Targets• Interfaces to OBLP Protocol Converter
• Transmits Block Statuses• Receives Switch & Signal Statuses
• Interfaces to Vehicle Simulator & Loco Interface Panel
GETS OBLP Equipment Rack
Vehicle Simulator & Diagnostic Terminal
OBLP Protocol Converter• Converts Between GE and ICBS Messaging• Uses ICBS Database for Status Mapping• Receives Block Statuses from OBLP• Transmits Switch & Signal Statuses to OBLP• Interfaces to Comm. Router (ICBS Network)
Locomotive Interface Panel• Acknowledgement Input• Reverser Handle Input• In/Out Mode Switch
GETS ITCS Locomotive Display
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Alstom ICBS SLP and WA Equipment Rack
Power Supply
VPI2 WA
WA Local Panel
VPI2 SLP
VPI Power andVRD Relays
Ethernet Hub