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Chapter 10. openETCS Model Application Level 1 (and this is Level 0), the switch to Level 1 is activated by the same oVariableStorage object. State “S12: Request for Train Data” waits for the values for the train length and maximum train speed via the DMI. The SRS defines more values for the train data, but which are not used in this case study. “S20: Wait for Start Selection” only waits for the driver to select the start of the mission via the DMI. “S24/S23: Mode and Level Activation” is another final state, which determines the new ETCS Mode based on the data entered. Either the guard “c60” is activated via the “Unfitted Selected” oVariableStorage object or guard “c37” is activated via the “Staff Responsible selected” object. In the latter case, also the switch to Application Level 1 is activated. Application Level 1 Generally, Application Level 1 does not differ from the functionality in Level 0. Figure 10.6 sketches the corresponding model. In contrast to Figure 10.4, the activation of ETCS Mode Staff Responsible does not require a switch of the Application Level because the EVC is already in Level 1. On the other hand, here the transition to Mode Unfitted requires a switch to Level 0. 10.2.3. Unfitted Mode Unlike the previous introduced Modes and their models, the Unfitted ETCS Mode is not used for the start-up procedure but for the train movement. Nevertheless, the support of ATP by ETCS (see Chapter 2) in this Mode is little because it is used on tracks that are unfitted or unequipped for ETCS. Thus, Unfitted is only available in Application Level 0. The corresponding gMainFunctionBlock is shown in Figure 10.7. The supervision of the speed according to the train’s maximum speed is the only available ATP functionality. The maximum speed can be entered in Mode Stand By as train data. The supervision is modelled in a separate gSubFunctionBlock graph in Figure 10.8. Since the train can move in Unfitted, balise telegrams can be received and must be evaluated accordingly. Mainly, this is relevant for the Transition Order Package [85, p. 14], which announces a switch to a new Application Level. According to the limits of this case study, this means a switch to Level 1, which also includes a transition to the Mode Staff Responsible or Full Supervision. Also, a Moving Authority (MA) telegram [85, p. 11] can be received, which is not used in Unfitted directly. It enables a transition to the Mode Full Supervision, in which a MA is always needed. The evaluations of transition order and MA balise telegrams are both modelled by an oEmbeddedStateMachine instance that is located in the oSubFunction object “Telegram Evaluation in Unfitted”. Figure 10.9 shows the model for the evaluation of transition orders and Figure 10.10 for MAs. A transition order or rather the transition to a new Application Level always requires the acknowledgement of the Driver via the DMI within a certain time. If the driver does not 186
10.2. Data and Control Flows in ETCS Modes c1 c8 c10 c29 c37 bool bool bool bool bool System Isolated by Driver Staff Responsible Selected Switch to Full Supervision System Unpowered by Driver Staff Responsible via Override c60 Application Level: 0 bool bool Switch to unfitted always includes a switch to level 0. Unfitted Selected POS_OUT double Current Train Position bool Stand By Entered ODOMETER V_OUT double Current Train Speed Service Brake Value double SERVICE BRAKE Sub-Function: DMI Stand By Sub-Function: Stand Still Supervision Sub-Function: Start Of Mission in Stand By Sub-Function: Variable Initialisation in Stand By Figure 10.6.: Stand By Mode in Application Level 1 187
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Open Source Software for Train Cont
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Datum des Promotionskolloquiums: 21
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Acknowledgments I would like to tha
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Abstract This document describes th
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Contents 3.3.3. Rascal . . . . . .
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Contents 8.4. Behavioural Design .
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Contents D.3. Domain Framework Mode
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List of Figures 6.4. Simple CORBA u
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List of Figures 10.27. General read
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Chapter 1. Introduction Railway Con
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Chapter 1. Introduction MontiCore M
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Chapter 1. Introduction ERTMS Forma
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Part I. Background 9
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Chapter 2. Concepts for Safe Railwa
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Chapter 3. Domain-Specific Modellin
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4The GOPPRR Meta Meta Model - An Ex
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4.1. Concrete Syntax Description Fo
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4.2. GOPPRR C++ Abstract Syntax Mod
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4.2. GOPPRR C++ Abstract Syntax Mod
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4.5. The Object Constraint Language
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4.5. The Object Constraint Language
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4.6. Tool Chain where artefacts are
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4.7. Conclusion External Artefacts
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Part II. Dependability 55
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Chapter 5. Verification and Validat
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6Security in Open Source Software A
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6.1. Memory Management Open Meta Me
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6.2. Hardware Virtualisation a fixe
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6.2. Hardware Virtualisation in a v
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6.2. Hardware Virtualisation Again,
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6.2. Hardware Virtualisation the fa
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Part III. openETCS Case Study 77
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Chapter 7. openETCS Meta Model far
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Chapter 7. openETCS Meta Model gEVC
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Chapter 7. openETCS Meta Model gEVC
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Chapter 7. openETCS Meta Model gMai
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Chapter 7. openETCS Meta Model Outp
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Chapter 7. openETCS Meta Model gSub
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Chapter 7. openETCS Meta Model The
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Chapter 7. openETCS Meta Model List
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Chapter 7. openETCS Meta Model 7.5.
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Chapter 12. Conclusion and Outlook
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Part IV. Appendix 241
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Appendix A. GOPPRR to MOF Transform
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Appendix B. openETCS Meta Model Con
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DopenETCS Domain Framework D.1. Dom
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D.2. Domain Framework Source Code 8
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D.3. Domain Framework Model 32 m_pT
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Appendix E. openETCS Generator 39 <
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Appendix E. openETCS Generator 200
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Appendix E. openETCS Generator 46 4
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FMetaEdit+ Generators F.1. GOPPRR X
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GopenETCS Unit Testing G.1. Unit Te
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Appendix H. openETCS Simulation 14
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Glossary ANTLR ANother Tool for Lan
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Glossary EVC An European Vital Comp
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Glossary OEM An original equipment
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Glossary XML The Extensible Markup
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Bibliography [12] “EN 50128 - Rai
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Bibliography [39] ——, ““Ope
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Bibliography [69] T. J. Parr and R.
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Index Artefact, 51 Automatic train
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Index Linux, 149 Memory management,
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