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Chapter 10. openETCS Model c4 bool System Powered by Driver Level 0 (CONST) bit Stored ETCS Level TRUE (CONST) bool EMERGENCY BRAKE Sub-Function: DMI No Power Figure 10.2.: No Power Mode in Application Level 0 NoPower (CONST) string VIS DMI Output: ETCS Mode Stored ETCS Level string VIS DMI Output: ETCS level VIS DMI Input: System On Power ENT bool bool System Powered by Driver bool Figure 10.3.: “DMI No Power” gSubFunctionBlock graph 182
10.2. Data and Control Flows in ETCS Modes 10.2.2. Stand By Mode Stand By cannot be entered directly by the driver but only by a transition from No Power. The provided functionality is the enforcement of the stand-still of the train and the data collection for the train mission [90, pp. 8-17]. Application Level 0 The data collected from the driver for the train mission is used to determine the next ETCS Mode and, if necessary, an Application Level switch. Figure 10.4 represents the model of the data flow in Application Level 0. According to the transition matrix in Figure 10.1, all guard objects are used besides “c13-p3”, which is executed in the case of an error, because the error oModeGuard object is a property of the graph itself. The primary functionality is modelled in three oSubFunction objects: “Start of Mission in Stand By”, “Stand Still Supervision”, and “DMI Stand By”. The “Start of Mission in Stand By” function collects, according to [90, pp. 8-17], data from the driver. In the model, the sub-function only holds an oEmbeddedStateMachine object with a Boolean true input to start it. Due to its simplicity, it is omitted in the documentation, and only the related gEmbeddedStateMachine graph is shown in Figure 10.5. States that are prefixed with a “D” or “S” and are followed by a number are directly transferred from the so-called state diagram in [90, p. 18]. Since the state diagram syntax in the SRS is a mixture of states, activities, executions, and decisions, not all of them can be mapped directly to the openETCS model. It should be remarked that the used state diagram formalism in the SRS was not integrated in the openETCS meta model because first it is a mixture of already existing diagram types, like state machines / diagrams [80] and (UML) activity diagrams [64]. Second, the used formalism for control structure must be combinable with data flows, which was discussed and explained in Section 7.2. This is not the case for the state diagram syntax used in the SRS. State ”S1: Request Driver ID“ is the initial state, which is executed until the driver has entered his or her ID in the DMI. ”D1: Check ETCS Level“ verifies if the current ETCS Application Level is valid or not. State ”S2: Request ETCS Level“ waits for the input of the current Application Level via the DMI if the Application Level is invalid. In ”Check Train Position“, the driver can revalidate the current train position or enter a new one. ”S10: Waiting for Driver Selection” offers the driver via the DMI the selection of overriding an existing EoA 1 or the proceeding one with an active mission or the entering of train data. “Override EoA” is a final state, in which the transition to the Staff Responsible Mode is activated via the “c37” condition with the usage of the “Staff Responsible via Override” oVariableStorage object. Since the Staff Responsible Mode is only available in ETCS 1 End of Authority 183
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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 gEVC
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11.6. Conclusion about warnings, fa
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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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