Capella Days 2021 | The long way from Bid to project... supported by Capella
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In 2018 during the Capella Days I showed how Capella and ARCADIA could be successfully applied supporting the bid phase of a large railway signalling project. In the meantime, this bid-project has changed into a real-world project. This presentation shows the long way from the bid model to the project model in Capella. Beside looking at some questions like "What can be reused form the bid model?" or "How can we quickly enlarge the number of system architects working on the project?", we will have a look at some of the pitfalls on this way. Additionally this talk gives some answers to questions like "Which of the different views of ARCADIA are suitable for which purpose?" or "How can one model special topics like communication with customers, description of external interfaces or safety and security aspects for a large railway traffic management system".
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Capella Days 2021 | The long way from Bid to project... supported by Capella
- 1. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 1 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN The long way …
- 2. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 2 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN Overview Project Model
- 3. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 3 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN www.thalesgroup.com Introduction Railway Traffic Management System TMS Bid/Project TMS - Norway
- 4. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 4 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN Introduction – What is a TMS? Picture of Andrew Jenner on Pixabay
- 5. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 5 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN Traffic Management Systems provide: globally optimized Railway Traffic local operation of Signalling systems
- 6. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 6 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN Project TMS Norway Management of 4000km railways 3 Control centres Heterogenous Traffic: - Trondheim 60 trains/day - 1000 trains/day in Oslo Adaptation to - legacy Signalling - New European ERTMS/ETCS systems
- 7. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 7 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN www.thalesgroup.com Model for Bid Problems in Bids Capella for modelling the architecture
- 8. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 8 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN Problems in Bids ▌Different „Languages“ and tools ▌Misunderstandigs ▌Poor presentation in documents
- 9. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 9 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN Bid model ▌Usage of logical and Physical Architecture To separate views - to avoid misunderstandings - Identify missing topics To have a common view on the system ▌(partial) functional allocation Identify critical scenarios Helps in customer discussions ▌Challenges Introduction effort “new tool”…
- 10. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 10 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN www.thalesgroup.com Model for the Project …we won the bid, and now? How to proceed with the bid model? How to describe technical/operational scenarios? How to introduce safety aspects? Challenges
- 11. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 11 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN How to proceed with the Bid model? ▌Reused on physical architecture level ✓ ▌Reimplemented logical architecture level Structure of bid model does not fit 100% to software structure Much more refinement necessary to help software architects ▌Added more functions and functional chains ✓ On logical architecture To extend critical scenarios (e.g. safety) ▌Connect Requirements to model (loose coupling) ?
- 12. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 12 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN How to describe technical/operational scenarios (TOPSCs)? ▌Requirement of Customer „Describe how you implement technically our defined Operational scenarios“ ▌Decision Use Capella Model for this purpose Use Operational Analysis, not System Analysis ▌Creation Guideline for modelling Work in parallel with up to 10 people using Teams for Capella ▌Customer approves Modelling tool usage
- 13. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 13 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN How to introduce safety aspects? ▌Safety requires detailed dynamic description Used Logical Architecture Diagrams - With functions - With functional chains - For regular/principle flow Used sequence diagrams - To detail sequences - To show failure scenarios ▌Diagrams helped in discussion With customer With Software architects With Safety Engineers
- 14. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 14 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN Challenges ▌Install modelling rules for more than ten people working in one project ▌Stepwise approach for culture change needed for Document/requirements based to model based system engineering ▌Transition to software engineering (Slightly) different languages (UML…) Different approach (e.g. objects and instances) Different tools… Picture of PixxlTeufel on Pixabay
- 15. This d ocument may not be reproduced, modified, adapted, published, translated, in any way, in whole or in part or disclosed to a third party without the prior written consent of THALES - © 2021 THALES. All rights reserved . 15 REF 001SCM00734271 rev 01P05 – 2021/10/31 Thales Deutschland GmbH / Customer Solutions OPEN Result, Questions Result: - Applicable approach for MBSE - Extensible Architecture - Experienced Architects