Transcript Communication Based Train Control - CBTC

Parsons Brinckerhoff
CBTC Standardization
Can it be Achieved ?
Railway Age Status Report
May, 1997
T. J. Sullivan
Senior Engineering Manager
PB Transit & Rail Systems
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Presentation Overview
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Background of TCRP/IEEE Standards Process
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On Board Communications Standards
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IEEE CBTC standards process and progress
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What’s Over the Horizon
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TCRP 1992 Origins
ISTEA
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Transit Cooperative Research
Program
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Funds Innovative Research
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Problem Statements
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Maximum Benefits /return
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TCRP Project G4
Developing Standards for System and Subsystem
Interfaces in Electric Rail Passenger Vehicles
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Founding Group
Thomas J. McGean, PE
– LTK Engineering
– IEEE VTS & Linda Sue Boehmer
– TSD Tom Sullivan
–
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Initial Brainstorming Meeting
Identified 26 potential areas
– Costs and benefits estimated
–
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Eight Working Groups Formed
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Open to any interested party - IEEE Standards
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Eight Working Groups
1 - Communications
2 - CB Train Control
3 - Health Monitoring
4 - Safety Standards for Software
5 - VOBC / Propulsion / Brake
6 - Auxiliary Power Systems
7 - Vehicle Passenger Information
8 - Environmental Standards for Electrical
Equipment
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Eight Working Groups
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1 - Communications
2 - CB Train Control
3 - Health Monitoring
4 - Safety Standards for Software
5 - VOBC/Propulsion/Brake
6 - Auxiliary Power Systems
7 - Vehicle Passenger Information
8 - Environmental Standards
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Communications Network
CB Train Control
Health Monitoring
VOBC/Propulsion/Brake
Auxiliary Power Systems
Vehicle Passenger Information
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Communications Network
CB Train Control
Health Monitoring
RADIO
MODEM
VOBC/Propulsion/Brake
Auxiliary Power Systems
Vehicle Passenger Information
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WG 1 Communcations Protocols
Chair: Bob Anderson, Harmon Industries
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Exhaustive search for candidate systems
Initial list reduced to two viable alternatives
Both were selected as a standard
Both can potentially interoperate
Either will do the job
Most successful working group and
potentially could be as significant as WG2
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Draft Communications Standards
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IEEE P 1473.1
– LONWORKS™
Communications Protocol
NYC Transit new subway cars (200 subway cars/year)
» AAR’s ECP Brake Program (1,000,000 box cars?)
» 2 million nodes sold worldwide, >1500 OEMs
»
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Cost effective, general purpose real-time network
IEEE P 1473.2
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IEC Train Communications Network
Special purpose real time network for rail systems
»ADTranz,
–
Siemens, Ansaldo, UITP, etc.
High performance, more expensive than P 1473.2
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Train Communication Network
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IEEE P 1473.1 Node
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Two sources for silicon
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Motorola and Toshiba
OPEN Protocol
Extensive PC-based
Development Tools
Modules available from
Echelon and many others
“C” Like Language
enhanced with “when”
statement
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P1473.1 Programming Example #1
when (doors = (open)) { brakes = ON } ;
equivalent function
BRAKE
SYSTEM
B+
DOOR SENSOR
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P1473.1 Programming Example #2
when (loadweigh=AW3)
{ Display (Pelham 123 = (Full))} ;
20 MPH
PELHAM 148
PELHAM 123
POSSIBLE CONTROL CENTER GRAPHIC
SHOWING HEAVILY LOADED PELHAM 123
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LONWORKS and Vehicle CBTC
PWM, ANALOG
OR SERIAL
Propulsion / Brake
Tractive Effort P-Signal
FREQUENCY
Tachometers
IEEE P1473.1
ONE $5
LONWORKS
NEURON
I.C.
(THREE 8-BIT
MICROPROCESSORS)
“UPLOADABLE”
APPLICATION
PROGRAM
( EEPROM )
PWM
PWM
ACTIVE TOGGLE
Train Door
Systems
EMERGENCY
BRAKE
SERIAL
SPARE
I/O
WAYSIDE TAG
READER
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WG-2 Participants
(Chairs: David Rutherford & Tom Sullivan)
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Good Participation
– Major signal suppliers
senior technical experts
– AAR, FRA, FTA
– Consultants
– Some Communications
and Radio Suppliers
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Weak Participation
– Transit Properties
(Except NYC Transit)
– Industry “Deal Makers”
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WG 2
Activities and Objectives
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Definition
Continuous bi-directional communications
– Does not require track circuits
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Two Basic Philosophies
Vehicle Centric
– Wayside Centric
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Interoperability Objectives
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Signal Suppliers’ CBTC Products
Signal
Company
Alcatel
Product
Seltrac
Technical Contact
John Brohm
(In-service products use an
inductive loop)
Andrew
ADtranz Signaling
Flexiblock
Chuck Gibson
Ansaldo/US&S
Microblock
John Paljug
GEC Alsthom
Harmon Industries
SACEM II
UltraBlock
Guillaume Delmas
Mark Fanara
Safetran Systems
SASIB Railway
GRS
Siemens /Matra
Transport
Announced Radio
Supplier
Utilicom
Team Atlas
Bill Petit
Watkins Johnson
Uwe Berg (1+916.688.5014)
Westinghouse UK
Please send revisions and additions to Tom Sullivan
[Top]
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Radio and Signal Supplier Alliances
Radio Supplier
Product
Modulation Interface
Status
Contact
Utilicom/Safetran
Long
Ranger
2.4 GHz DSSS IEEE P1473.1
Production
Andrew
Model
2400
2.4 GHz DSSS RS-530
Prototypes
Don Johnston
2.4 GHz DSSS IEEE P1473.1
Production
Marv Swenson
Raytheon/Hughes EPLRS
Telephonics
Watkins Johnson
Signal Supplier
Affiliation
Safetran
ADtranz
Paulian Moscovici
WJ8850
2.4 GHz DSFH RS-422
Prototypes
Brad Wynne
SASIB Railway
GRS
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Spread Spectrum Spectrum
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How much bandwidth is Needed?
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Information updates: 1-4 times/sec (transit)
SELTRAC - “Wayside Centric System”
sub 60 second capability (worst case poll 1/sec)
– 1200 bits/sec from wayside to train (70 data bits)
– 600 bits/sec from train to wayside (31 data bits)
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You can never
– be too rich
– be too thin
– or have too much
communications bandwidth
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Issues working against Standardization
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Corporate Greed and Egos
Tradition
Non-technical concessions required
Many technical details
IEEE Standards require 75% to agree
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Issues working for Standardization
Corporate
Committment
to Standards
Separate Radio
from
Train Control
NYCT’s
Canarsie
Line
TCRP- G4
The Only Forum
to discuss
Standards
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Summary
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Communications is, and will, drive everything
The “PCC” meeting for CBTC has yet to occur
Synergy
NYCT Drives Standardization
– TCRP -G4 facilitate this process
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Transit Property participation is strongly
encouraged in TCRP G4 Program
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Over the Horizon
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Standardized Communication Networks
TCP/IP, LONWORKS, JAVA
Internets --> Intranets --> Infranets
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New York will drive CBTC standardization in US
TCRP -G4 & IEEE will facilitate standardization
End users will demand safe, non-stop systems
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For More Information

CBTC Web Page
www.tsd.org
– Eight TCRP Working Groups
– CBTC Projects worldwide
–

CBTC Internet mailing list
Send a message to: [email protected]
– Ask to be placed on the list
– Enter name, address, and brief
biographic info.
–
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