CBTC Communication Based Train Control
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1 CBTC Communication Based Train Control
2 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)
3 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
4 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
5 CBTC Digital Communication (DCS)
6 CBTC communication subsystem CENTRAL EQUIPMENT External Connection STATION EQUIPMENT WAYSIDE EQUIPMENT Wired (backbone) Wireless network (wayside) On-board (vehicle) network COMMUNICATIONS NETWORK ' OBE OBE ON-BOARD EQUIPMENT CENTRAL EQUIPMENT External Connection STATION EQUIPMENT Pr ox y LAN LAN SD WAYSIDE EQUIPMENT SD LAN SD SD LAN COMMUNICATIONS NETWORK MOBILE NETWORK SD LAN SD ' OBE OBE LAN ON-BOARD EQUIPMENT
7 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 CENTRAL APPLICATION WAYSIDE APPLICATION BACKBONE SWITCHES BACKBONE NETWORK
8 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. ' SD OBE SD
9 On-board communication subsystem (vehicle) Each onboard network device is a modular component, with two (2) IEEE 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. IEEE IEEE RF RF MRU ND ND ND IEEE CAN ND MRU VOBC 2 x twisted pair copper 2 x twisted pair copper CAN
10 Physical component of communication system Mobile Radio Unit (MRU, OBRU, DCU) Station Adapter (SA) Wayside Radio Unit (WRU) Access Point (AP)
11 CBTC Automation Control Subsystems Central control subsystem (System Regulation Servers -SRS): Man Machine interface of tracks and train positions and status Headway and schedule regulation Automatic and Manual Train Routing and scheduling Overview 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 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. The
12 Overview of all CBTC Control Subsystems OCC Mimic Display Line Controller Line Controller Line Controller Data Recorder/ Viewer Printer Monitoring System Backup OCC Mimic Display Line Controller Line Controller Line Controller Data Recorder/ Viewer Printer Monitoring System Terminal Server Printer ATS Server s ATS Printer Backup ATS Servers External Devices Printer ATS Schedule Display ATS ATS 2 Certification Authority Timetable Compiler Printer ATS Schedule Display VOBC & ZC Simulator Terminal Server Certification Authority Timetable Compiler Training Centre External Devices Router (Firewall) Environment Simulator ATS 1 Printer Router (Firewall) DCS DCS DCS DCS Backbone Interlocking Station Depot Test Track DCS DCS DCS DCS Zone Controller Interring DCS ACE ACE Zone Controller ATS Server Data Logger Router (Firewall) ATS Data Recorder Non-Interlocking Station Data Recorder Depot Interlocking equipment Relay Rack Interring DCS AP Relay Rack AP Wireless LAN IEEE Crew Protection Switches CTF CTF CTF Switch Machines Signals PSD Sim Crew Sw Transponders Depot I/L Trackside Equipment PSDs Axle Counters APs Crew Sw DIs GIDS/PIDS Switch Machines Signals PSDs Crew Sw DIs GIDS/PIDS Cab A 30 C20 Existing Trains 54 C30 New Trains Cab B 2oo3 VOBC Proximity Plates Maintenance Centre Interring DCS DCS Trackside Equipment Wayside SLMD ATS Maintenance Printer ATS Fault Report Depot Maintenance Legend: IPS Server Transponders Provisioned for Future Upgrade VOBC SLMD Proximity Plate s
13 CBTC Man Machine Interface capabilities Central control Man Machine interface. Line overview
14 CBTC Man Machine Interface capabilities CBTC MMI operations menu
15 CBTC Man Machine Interface capabilities Assigning a Train
16 CBTC Man Machine Interface capabilities Schedule definition, assignment and adjustment Predefine different schedule for weekday, weekend, holiday, etc. Predefine distribution of trains between buildups and reductions throughout the day Assign / clear predefined schedule for System Regulation Server to implement Apply automatic or manual global schedule slide
17 THALES CBTC implementation THALES CBTC implementation worldwide: Canada Toronto Scarborough LRT and Subway Vancouver Canada-Line Vancouver SkyTrain Korea Busan-Gimhae Line Seoul Sin Bundang Line Malaysia/Asia Kuala Lumpur LRT II Beijing Line 4 Guangzhou Line 3 MTR Disneyland Resort, Hong Kong MTR Ma On Shan Rail, Hong Kong Wuhan LRT United Arab Emirates Dubai Metro: Green Line United Kingdom / Europe London Dockland London Underground: Jubilee Line Paris Line 13 USA AirTrain JFK Detroit DPM Las Vegas Monorail NYC Flushing Line Washington Dulles Airport
18 Questions / Answers Q & A
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