rail signalling solutions igor silajev cbtc – communication based train control

Rail Signalling Solutions Igor Silajev

CBTC – Communication Based Train Control


Introduction

Communication Based Train Control is an automated control system that ensures safe operation of rail vehicles using data communication between control entities.

CBTC is based on basic principles from telecommunication and automation

There are different levels of automation: Automatic Train Protection (ATP) Automatic Train Operation (ATO) Automatic Train Supervision (ATS)


THALES CBTC

Characteristic of THALES CBTC : Standard network and radio based communication

system based on the Internet Protocol (IP) Standard. Remote train monitoring in real time Constant high-speed connectivity between train and

trackside Centralized network management A flexible network architecture


THALES CBTC Functional Components

Detection of train location, speed and direction Transponder tags, tachometer, Accelerometer, Switch/route info

Route and switch interlocking

Safe train separation using Progressive Movement Authority

Work Zone protection

Train handover between neighboring Zone Controller

Emergency Stop Device response


CBTC Digital Communication Network (DCS)


CBTC communication subsystem

Wired Network (backbone)Wireless network (wayside)On-board (vehicle) network

COMMUNICATIONS NETWORK

CENTRAL EQUIPMENT

STATIONEQUIPMENT

WAYSIDEEQUIPMENT

' OBE OBE

ON-BOARD EQUIPMENT

ExternalConnection

COMMUNICATIONS NETWORK

CENTRAL EQUIPMENT

STATIONEQUIPMENT

WAYSIDEEQUIPMENT

' OBE OBE

ON-BOARD EQUIPMENT

ExternalConnection

MOBILE NETWORK

LAN

LAN

LAN

LAN LAN

SD SD

SD SD

SD SD

LAN

Proxy


Wired communication subsystem (backbone)

The wired portion of the CBTC consists of a backbone network that provides IP network services between the central or wayside equipment

It consists of one or more 100/1000 Mbps fibre optic Ethernet rings allowing exclusive full duplex use of a 100/1000 Mbps channel to each connected node. The network uses layer 2 switches to provide flat connectivity to all the application equipment. It could also use layer 3 routers (or routing functionality in multi-purpose switches) to provide traffic protection and in some cases additional security

CENTRALAPPLICATION

BACKBONE NETWORK

BACKBONE SWITCHES

WAYSIDEAPPLICATION


Wireless communication (wayside network)

The wayside network utilizes the backbone switches to connect the WRU’s (Wayside Radio Unit) to the overall network Groups of WRUs are connected in a ring topology. Each end of the ring has a bridge connection to a different backbone switch. This configuration requires a managed switch (that provides ring reconfiguring following a switch failure). If a single WRU or a single switch fails all the unaffected WRUs remain connected.

' SDOBE

SD


On-board communication subsystem (vehicle)

Each onboard network device is a modular component, with two (2) IEEE 802.3 interfaces, as well as one CAN bus interface. CAN bus is provided for data transfer through the couplers. It requires only a single twisted pair wire and can operate in poorer transmission environments than Ethernet.

VOBCIEEE 802.3

2 x twisted pair copperCAN 2 x twisted pair copper CAN

MRURF

ND

IEEE 802.11

ND MRURF

ND

IEEE 802.11

ND


Physical component of communication system

Mobile Radio Unit (MRU, OBRU, DCU)“Station Adapter (SA)”

Wayside Radio Unit (WRU)“Access Point (AP)”


CBTC Automation Control Subsystems

Central control subsystem (System Regulation Servers -SRS): Man – Machine interfaceOverview of tracks and train positions and status Headway and schedule regulation Automatic and Manual Train Routing and scheduling

Wayside control subsystem (Zone Controller - ZC): Zone Controller on the trackside is the recipient for all position messages sent from the trains within its region of control and the status of the obstructions such as axle counter blocks, signals, switches, floodgates, guideway intruder detection.The ZC is responsible for route setting based on the commands received from the Central control subsystem. It supports fully bidirectional operation.

On-board vehicle control subsystem (Vehicle On-Board Controller – VOBC):The vital component of the system is a Vehicle On-board Controller (VOBC) on the train The Vehicle On-board Controller establishes the position of the train on the guideway by detecting transponders located in the track bed, and uses the transponder data to extract information from the database The database on the Vehicle On-board Controller contains all relevant guideway information, including station stops, gradients, civil speed limits, switch locations, axle counter blocks locations and trackside signal locations.


Overview of all CBTC Control Subsystems

VOBC & ZC Simulator

Environment Simulator

ATS Workstation 2

ATS Workstation 1Network Printer

Training Centre

DCS

DCS

Test Track

Data Recorder

ATS

Workstation

Relay Rack

CTF

Switch Machines

SignalsPSD Sim

Crew Sw

Depot I/L

Interring DCS

Trackside Equipment APs

Transponders

Proximity Plates

Data Logger

Interlocking Station

Data Recorder

DCS

Relay Rack

CTF

Switch Machines

Signals PSDs Crew Sw

Zone Controller

Non-Interlocking Station

CTF

PSDs Crew Sw

Proximity PlatesTransponders

ATS Schedule Display WorkstationATS

Workstation

Network Printer

OCC

DCS

Timetable Compiler

Network Printer

Wireless LAN IEEE 802.11

AP AP

Interring DCS

Cab A Cab B

Maintenance Centre

DCS

Wayside SLMD

VOBC SLMD

DCS

Depot

30 C20 Existing Trains54 C30 New Trains

Interring DCS

Trackside Equipment

DIs DIs

ATS MaintenanceWorkstation Network

Printer

ATS Fault ReportWorkstation

Depot MaintenanceWorkstation

IPS Server

Crew Protection Switches

ATSServers

ACE

DCS

Zone Controller

2oo3 VOBC

GIDS/PIDS GIDS/PIDS

Router(Firewall)

Depot Interlocking equipment

ATS Server

ACE

DCS Backbone

Line Controller Workstation

Line Controller WorkstationLine Controller

Workstation

Mimic Display

Router(Firewall)

External Devices

Data Recorder/

Viewer

Certification Authority

Network Monitoring

System

Network Printer

Terminal Server

ATS Schedule Display WorkstationATS

Workstation

Network Printer

Backup OCC

DCS

Timetable Compiler

Network Printer

Backup ATSServers

Line Controller Workstation

Line Controller WorkstationLine Controller

Workstation

Mimic Display

Router(Firewall)

External Devices

Data Recorder/

Viewer

Certification Authority

Network Monitoring

System

Network Printer

Terminal Server

Provisioned for Future Upgrade

Legend:

Axle Counters


CBTC Man Machine Interface capabilities

Central control Man Machine interface. Line overview



CBTC MMI operations “menu”



Assigning a Train



Schedule definition, assignment and adjustmentPredefine different schedule for weekday, weekend, holiday, etc.Predefine distribution of trains between buildups and reductions throughout the dayAssign / clear predefined schedule for System Regulation Server to implementApply automatic or manual global schedule slide


THALES CBTC implementation

THALES CBTC implementation worldwide: Canada

Toronto Scarborough LRT and Subway Vancouver Canada-LineVancouver SkyTrain

KoreaBusan-Gimhae LineSeoul Sin Bundang Line

Malaysia/AsiaKuala Lumpur LRT IIBeijing Line 4Guangzhou Line 3MTR Disneyland Resort, Hong KongMTR Ma On Shan Rail , Hong KongWuhan LRT

United Arab EmiratesDubai Metro: Green Line

United Kingdom / EuropeLondon Dockland London Underground: Jubilee LineParis Line 13

USAAirTrain JFKDetroit DPMLas Vegas MonorailNYC Flushing LineWashington Dulles Airport


Questions / Answers

Q & A

rail signalling solutions igor silajev cbtc – communication based train control

Documents