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Advances in Communications-Based Train Control Systems by F. Richard Yu

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15
Chapter 2
Testing Communications-
Based Train Control
Kenneth Diemunsch
Contents
2.1 Introduction ............................................................................................... 16
2.2 Pros and Cons of Using CBTC System ......................................................18
2.2.1 Pros of CBTC .................................................................................18
2.2.2 Cons of CBTC ...............................................................................19
2.3 Dierent Types of CBTC Projects ..............................................................19
2.3.1 Installation on a New Line: Greeneld Project ...............................19
2.3.2 Migrating an Existing Line: Browneld Project ..............................20
2.4 CBTC Architecture .................................................................................... 21
2.5 Principles of CBTC Testing .......................................................................21
2.5.1 Reuse as Much as Possible from Previous Projects ...........................21
2.5.2 Test in Factory as Much as Possible ................................................22
2.5.3 Test All Safety-Related Items ..........................................................22
2.6 Environmental Tests...................................................................................23
2.6.1 EMC Tests ......................................................................................23
2.6.2 Climatic Conditions .......................................................................23
2.6.3 Mechanical Conditions ...................................................................24
2.6.4 Abrasive Conditions ........................................................................24
2.7 First Article Conguration Inspection .......................................................24
2.8 Factory Tests ..............................................................................................24
2.8.1 Factory Test Goals ..........................................................................25
2.8.2 Factory Setup ..................................................................................25
2.8.3 Dierent Types of Factory Tests .....................................................26
16 Advances in Communications-Based Train Control Systems
2.1 Introduction
Communications-based train control (CBTC) technology is the most advanced
train control system for urban railway infrastructures. It is very dierent from
conventional relay-based signaling systems and more complex than most cab sig-
naling systems. CBTC functions are numerous and highly complex with custom-
ized details for each project. ey cannot be tested for all possible conditions at
2.8.3.1 Product Factory Tests ............................................26
2.8.3.2 CBTC Supplier Internal Factory Testing ...............26
2.8.3.3 Factory Acceptance Test ........................................26
2.8.3.4 Description of the Tests to Be Performed ..............26
2.8.3.5 Major Challenges of Factory Tests .........................27
2.9 On-Board Integration Tests ......................................................................27
2.9.1 Rolling Stock Characterization Tests ........................................27
2.9.2 Mechanical and Electrical Tests ...............................................28
2.9.3 Static and Dynamic Post Installation Check Out Tests ............28
2.10 Test Track ................................................................................................28
2.10.1 Use of the Test Track ................................................................28
2.10.2 Test Track Equipment ..............................................................29
2.10.3 Location of the Test Track ........................................................29
2.11 On-Site Tests ............................................................................................30
2.11.1 Post Installation Check Out .....................................................30
2.11.2 DCS Tests ................................................................................30
2.11.2.1 Wayside Network Tests .........................................30
2.11.2.2 Radio Tests ............................................................ 31
2.11.3 Localization Tests .....................................................................32
2.11.4 Integration Tests .......................................................................32
2.11.4.1 Integration Tests: Internal to CBTC ......................32
2.11.4.2 Integration Tests: External to CBTC .....................33
2.11.5 Functional Tests ........................................................................33
2.11.6 ATO Tests .................................................................................35
2.11.7 ATS Tests ..................................................................................35
2.11.8 Site Acceptance Tests .................................................................35
2.11.9 Shadow Mode Tests ..................................................................36
2.11.10 Reliability, Availability, and Maintenance Tests........................36
2.11.10.1 Reliability and Availability Demonstration ............36
2.11.10.2 Maintainability Demonstration .............................37
2.12 CBTC Test Duration ...............................................................................38
2.13 Constraints on Field Tests ........................................................................38
2.14 Conclusion ...............................................................................................39
References .......................................................................................................... 40

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