Transportation Systems Design Inc LONMARK and the IEEEs

Transportation Systems Design, Inc. LONMARK and the IEEE’s new Rail Transit Vehicle Interface Standards ® LONMARK Transportation Meeting Brooklyn, NY April 28, 1999 T. J. Sullivan Principal Transportation Systems Design, Inc. Oakland, CA 1

Transportation Systems Design, Inc. Presentation Overview n What is IEEE 1473 n How is it used? n Where does the LONMARK Interoperability Association fit in ? 2

Transportation Systems Design, Inc. “Plug and Play” Mechanical Standard Electrical Standard 3

Transportation Systems Design, Inc. TCRP Project G 4/G 4 A “Developing Standards for System and Subsystem Interfaces in Electric Rail Passenger Vehicles” n Funded by National Academy of Science – Via Transportation Research Board – American Public Transit Association n IEEE Standard 1473 4

Transportation Systems Design, Inc. Eight Initial 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 5

Transportation Systems Design, Inc. IEEE 1473 Train Network RADIO MODEM COMMUNICATIONS NETWORK CB Train Control Health Monitoring VOBC/Propulsion/Brake Auxiliary Power Systems Vehicle Passenger Information 6

Transportation Systems Design, Inc. Working Group #1: IEEE 1473 Bob Anderson, Harmon Industries n Exhaustive search and evaluation n Initial list reduced quickly to two –Both selected as a standard –Both can potentially interoperate n Key RTVIS Working Group 7

Transportation Systems Design, Inc. IEEE 1473 n IEEE 1473 -T (TCN) – Dedicated, high performance rail network protocol » IEC Draft Standard n supported by Adtranz, Siemens, Ansaldo n Not supported by SNCF (France) n IEEE 1473 - L ( LONWORKS® ) – Cost-effective, open architecture, general purpose – Over 10 million nodes sold worldwide; >3500 OEMs – US Rail Applications » AAR’s ECP Brake Standard (1. 5 million freight cars) » PTC Standard for Conrail / CSXT / NS » Many light and heavy rail systems including MTA NYC Transit 8

Transportation Systems Design, Inc. Train Communications Network Train Network Routerr 9

Transportation Systems Design, Inc. IEEE 1473 -L Node n n Follows ISO 7 - Layer OSI Model Protocol is Open and Published Two silicon sources Many Development Tools – Lon. Maker » Object Oriented Design Tool » Uses Visio drawing program » Generates executable network software directly from Visio drawing – Neuron “C” » C-like program language » Enhanced with “WHEN” 10

Transportation Systems Design, Inc. IEEE 1473 -L Interfaces 78 kbps “Free Topology” Bus 11 General-purpose I/O Lines PWM, ANALOG OR SERIAL Propulsion / Brake Tractive Effort P-Signal FREQUENCY IEEE 1473 -L LONWORKS NEURON Integrated Circuit (THREE 8 -BIT MICROPROCESSORS) “UPLOADABLE” APPLICATION PROGRAM ( EEPROM ) PWM ACTIVE TOGGLE SERIAL ANALOG Tachometers Train Doors EMERGENCY BRAKE Passenger Signs Load Weigh 11

Transportation Systems Design, Inc. IEEE 1473 -L Program Example 1 Trainline BRAKE SYSTEM B+ DOORS CLOSED when (doors = = not closed) { brakes = ON } ; 12

Transportation Systems Design, Inc. IEEE 1473 -L Program Example 2 when (loadweigh = = AW 3) { Display (Train = (Full)) } ; 20 MPH PELHAM 143 (AW 1) PELHAM 123 PELHAM 103 (AW 3) (AW 1) Prototype Control Center Graphic 13

Transportation Systems Design, Inc. Obtaining True Interoperability The Devil is in the Details 14

Transportation Systems Design, Inc. IEEE Interoperability Issues n n Existing RTVISC standards are necessary Currently, they are not sufficient – Many still have a “performance/functional” flavor – Precise interfaces required to permit interoperability n Additional work is required by either or both: – IEEE Working Groups – LONMARK Interoperability Association 15

Transportation Systems Design, Inc. LONMARK Association n Independent Association of LONWORKS users – Manufacturers, end-users, and integrators/car builders n Governed by industrial council n Well established interoperability guidelines – Functional Profiles – Complete interoperable specifications n Promotes LONMARK certified products – Existing published guidelines – Task groups make new guidelines 16

Transportation Systems Design, Inc. The IEEE Standards Pieces Buyers Suppliers IEEE RTVIS WG 9 Funders LONMARK 17

Transportation Systems Design, Inc. What lies Ahead? n n n Process may now be “end-user” driven TCRP Project will facilitate standardization NYC Transit is a major standards force – Actively participates & supports IEEE standards – Mandates LONWORKS and LONMARK devices – Needs 200 subway cars/year » Until they stop running the subways in NYC 18

Transportation Systems Design, Inc. Summary n n n Communications Interoperability is Key NYCT mandates LONWORKS and LONMARK IEEE RTVIS established overall standards LONMARK Association will help complete the details to ensure Interoperability You’re all welcome to join in 19

Transportation Systems Design, Inc. Questions & Discussion 20