Parsons Brinckerhoff CBTC Standardization Can it be Achieved

Parsons Brinckerhoff CBTC Standardization Can it be Achieved ? Railway Age Status Report May, 1997 T. J. Sullivan Senior Engineering Manager PB Transit & Rail Systems 1

Parsons Brinckerhoff Presentation Overview n Background of TCRP/IEEE Standards Process n On Board Communications Standards n IEEE CBTC standards process and progress n What’s Over the Horizon 2

Parsons Brinckerhoff TCRP 1992 Origins ISTEA 3

Parsons Brinckerhoff Transit Cooperative Research Program n Funds Innovative Research n Problem Statements n Maximum Benefits /return 4

Parsons Brinckerhoff TCRP Project G 4 Developing Standards for System and Subsystem Interfaces in Electric Rail Passenger Vehicles n Founding Group – Thomas J. Mc. Gean, PE – LTK Engineering – IEEE VTS & Linda Sue Boehmer – TSD Tom Sullivan n Initial Brainstorming Meeting – Identified 26 potential areas – Costs and benefits estimated n Eight Working Groups Formed – Open to any interested party - IEEE Standards 5

Parsons Brinckerhoff 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 6

Parsons Brinckerhoff Eight Working Groups n n n 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 7

Parsons Brinckerhoff Communications Network CB Train Control Health Monitoring VOBC/Propulsion/Brake Auxiliary Power Systems Vehicle Passenger Information 8

Parsons Brinckerhoff Communications Network CB Train Control Health Monitoring RADIO MODEM VOBC/Propulsion/Brake Auxiliary Power Systems Vehicle Passenger Information 9

Parsons Brinckerhoff WG 1 Communcations Protocols Chair: Bob Anderson, Harmon Industries n n n 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 WG 2 10

Parsons Brinckerhoff Draft Communications Standards n IEEE P 1473. 1 – LONWORKS™ Communications Protocol » NYC Transit new subway cars (200 subway cars/year) » AAR’s ECP Brake Program (1, 000 box cars? ) » 2 million nodes sold worldwide, >1500 OEMs – n Cost effective, general purpose real-time network IEEE P 1473. 2 – – 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 11

Parsons Brinckerhoff Train Communication Network 12

Parsons Brinckerhoff IEEE P 1473. 1 Node n Two sources for silicon – Motorola and Toshiba n n OPEN Protocol Extensive PC-based Development Tools Modules available from Echelon and many others “C” Like Language enhanced with “when” statement 13

Parsons Brinckerhoff P 1473. 1 Programming Example #1 when (doors = (open)) { brakes = ON } ; equivalent function BRAKE SYSTEM B+ DOOR SENSOR 14

Parsons Brinckerhoff P 1473. 1 Programming Example #2 when (loadweigh=AW 3) { Display (Pelham 123 = (Full))} ; 20 MPH PELHAM 148 PELHAM 123 POSSIBLE CONTROL CENTER GRAPHIC SHOWING HEAVILY LOADED PELHAM 123 15

Parsons Brinckerhoff LONWORKS and Vehicle CBTC PWM, ANALOG OR SERIAL Propulsion / Brake Tractive Effort P-Signal FREQUENCY IEEE P 1473. 1 ONE $5 LONWORKS NEURON I. C. (THREE 8 -BIT MICROPROCESSORS) “UPLOADABLE” APPLICATION PROGRAM ( EEPROM ) PWM ACTIVE TOGGLE SERIAL SPARE I/O Tachometers Train Door Systems EMERGENCY BRAKE WAYSIDE TAG READER 16

Parsons Brinckerhoff WG-2 Participants (Chairs: David Rutherford & Tom Sullivan) n Good Participation – Major signal suppliers senior technical experts – AAR, FRA, FTA – Consultants – Some Communications and Radio Suppliers n Weak Participation – Transit Properties (Except NYC Transit) – Industry “Deal Makers” 17

Parsons Brinckerhoff WG 2 Activities and Objectives n Definition – Continuous bi-directional communications – Does not require track circuits n Two Basic Philosophies – Vehicle Centric – Wayside Centric n Interoperability Objectives 18

Parsons Brinckerhoff Signal Suppliers’ CBTC Products 19

Parsons Brinckerhoff Radio and Signal Supplier Alliances 20

Parsons Brinckerhoff Spread Spectrum 21

Parsons Brinckerhoff How much bandwidth is Needed? n n 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) n You can never – be too rich – be too thin – or have too much communications bandwidth 22

Parsons Brinckerhoff Issues working against Standardization n n Corporate Greed and Egos Tradition Non-technical concessions required Many technical details IEEE Standards require 75% to agree 23

Parsons Brinckerhoff Issues working for Standardization Corporate Committment to Standards NYCT’s Canarsie Line Separate Radio from Train Control TCRP- G 4 The Only Forum to discuss Standards 24

Parsons Brinckerhoff Summary n n n Communications is, and will, drive everything The “PCC” meeting for CBTC has yet to occur Synergy – NYCT Drives Standardization – TCRP -G 4 facilitate this process n Transit Property participation is strongly encouraged in TCRP G 4 Program 25

Parsons Brinckerhoff Over the Horizon n Standardized Communication Networks – TCP/IP, LONWORKS, JAVA Internets --> Intranets --> Infranets n n n New York will drive CBTC standardization in US TCRP -G 4 & IEEE will facilitate standardization End users will demand safe, non-stop systems 26

Parsons Brinckerhoff For More Information n CBTC Web Page – www. tsd. org – Eight TCRP Working Groups – CBTC Projects worldwide n CBTC Internet mailing list – Send a message to: cbtc@tsd. org – Ask to be placed on the list – Enter name, address, and brief biographic info. 27