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Component-Based Vehicular Distributed Embedded Systems: End-to-end Timing Models Extraction at Various Abstraction Levels
Mälardalen University, School of Innovation, Design and Engineering. Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems. (IS)ORCID iD: 0000-0003-3242-6113
Mälardalen University, School of Innovation, Design and Engineering. Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.ORCID iD: 0000-0003-2957-0966
Mälardalen University, School of Innovation, Design and Engineering. Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems. (IS)ORCID iD: 0000-0001-7586-0409
2014 (English)Report (Other academic)
Abstract [en]

In order to perform the end-to-end response-time and delay analyses of a system, its end-to-end timing model should be available. The majority of existing model- and component-based development approaches for vehicular distributed embedded systems extract the end-to-end timing model at an abstraction level and development phase that is close to the system implementation. We present a method to extract the end-to-end timing models from the systems at a higher abstraction level. At the higher level, the method extracts timing information from system models that are developed with EAST-ADL and Timing Augmented Description Language (TADL2) using the TIMMO methodology. At the lower level, the method exploits the Rubus component model to extract the timing information that cannot be clearly specified at the higher level such as trigger paths in distributed chains. We also discuss challenges and issues faced during extraction of the timing models. Further, we present guidelines and solutions to address these challenges.

Place, publisher, year, edition, pages
2014.
Series
MRTC Reports, ISSN 1404-3041
National Category
Engineering and Technology Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:mdh:diva-24974ISRN: MDH-MRTC-285/2014-1-SEOAI: oai:DiVA.org:mdh-24974DiVA: diva2:716353
Projects
Synthesizing Predictable Software for Distributed Embedded Systems
Available from: 2014-05-09 Created: 2014-05-09 Last updated: 2014-08-29Bibliographically approved
In thesis
1. Communications-Oriented Modeling and Development of Vehicular Distributed Embedded Systems
Open this publication in new window or tab >>Communications-Oriented Modeling and Development of Vehicular Distributed Embedded Systems
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The model- and component-based development approach has emerged as an attractive option for the development of vehicular distributed real-time embedded systems. Within this context we target challenges related to modeling of legacy network communication, extraction of end-to-end timing models and support for end-to-end timing analysis.

We propose a novel approach for modeling legacy network communication in these systems. By introducing special-purpose components to encapsulate and abstract the communication protocols, we allow the use of legacy nodes and legacy protocols in a component- and model-based software engineering environment. Because an end-to-end timing model should be available to perform the end-to-end response-time and delay analyses, we present a method to extract the timing models from these systems. We also extend the method to various abstraction levels and parts of the development process for the systems. During the models extraction, we identify that the existing worst-case response-time analysis for Controller Area Network (CAN), a widely used real-time network protocol in the vehicular domain, does not support mixed messages. These messages are partly periodic and partly sporadic. They are implemented by some higher-level protocols for CAN used in the industry. We extend the existing analysis which is now applicable to any higher-level protocol for CAN that uses periodic, sporadic and/or mixed transmission.

In order to show the application of our modeling techniques, timing model extraction method and extended analyses; we provide a proof of concept by extending the Rubus Component Model, which is used for the development of software for vehicular embedded real-time systems by several international companies. We also implement the end-to-end response-time and delay analyses along with the extended analysis for CAN in the existing industrial tool suite the Rubus-ICE. Moreover, we implement the extended analysis for CAN in a free tool MPS-CAN analyzer. Further, we conduct automotive-application case studies to validate our methods and techniques.

Place, publisher, year, edition, pages
Västerås: Mälardalen University, 2014
Series
Mälardalen University Press Dissertations, ISSN 1651-4238 ; 160
Keyword
Embedded systems; real-time systems; distributed embedded systems; component-based development; End-to-end timing analysis; response-time analysis; Controller Area Network; component model; timing model
National Category
Embedded Systems
Research subject
Computer Science
Identifiers
urn:nbn:se:mdh:diva-24969 (URN)978-91-7485-151-9 (ISBN)
Public defence
2014-06-16, U2-013, Mälardalens högskola, Västerås, 10:15 (English)
Opponent
Supervisors
Projects
SynthSoftFEMMVAEEMDEF
Funder
Swedish Research Council, 16330
Available from: 2014-05-08 Created: 2014-05-08 Last updated: 2014-05-09Bibliographically approved

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