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Introducing Database-Centric Support in AUTOSAR
Mälardalen University, School of Innovation, Design and Engineering. (IS (Model-Based Engineering of Embedded Systems))
Mälardalen University, School of Innovation, Design and Engineering. (IS (Model-Based Engineering of Embedded Systems))ORCID iD: 0000-0003-2898-9570
Mälardalen University, School of Innovation, Design and Engineering. (IS)ORCID iD: 0000-0001-7586-0409
2012 (English)In: 7th International Symposium on Industrial Embedded Systems (SIES): Conference Proceedings, IEEE , 2012, p. 138-147Conference paper, Published paper (Refereed)
Abstract [en]

We propose to integrate a real-time databasemanagement system into the basic software of the AUTOSARcomponent model. This integration can be performed withoutviolating the fundamental principles of the component-basedapproach of the AUTOSAR standard. Our database-centricapproach allows developers to focus on application developmentinstead of reinventing data management techniques ordevelop solutions using internal data structures. We use stateof-the-art database pointer techniques to achieve predictabletiming, and database proxies to maintain component encapsulationand independence of data-management strategy. Thepaper illustrates the feasibility of our proposal when databaseproxies are used to manage the data communication betweencomponents and to perform run-time monitoring on the virtualfunction bus. Our implementation results show that the abovebenefits do not come at the expense of run-time overheadsor less accurate timing predictions. Under typical workloadconditions, our concept only introduces in the order of 4%CPU overhead.

Place, publisher, year, edition, pages
IEEE , 2012. p. 138-147
National Category
Computer and Information Sciences Engineering and Technology
Research subject
Computer Science
Identifiers
URN: urn:nbn:se:mdh:diva-14509DOI: 10.1109/SIES.2012.6356579Scopus ID: 2-s2.0-84871544622ISBN: 978-1-4673-2684-1 (print)OAI: oai:DiVA.org:mdh-14509DiVA, id: diva2:517309
Conference
7th IEEE International Symposium on Industrial Embedded Systems, SIES 2012; Karlsruhe; 20 June 2012 through 22 June 2012
Available from: 2012-04-23 Created: 2012-04-23 Last updated: 2018-01-12Bibliographically approved
In thesis
1. Data Management in Component-Based   Embedded Real-Time Systems
Open this publication in new window or tab >>Data Management in Component-Based   Embedded Real-Time Systems
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis presents new data management techniques for run-time data in component-based embedded real-time systems. These techniques enable data to be modeled, analyzed and structured to improve data management during system development, maintenance, and execution. The foundation of our work is a case-study that identifies a number of problems with current state-of-practice in data management for industrial embedded real-time systems.

We introduce two novel concepts: the data entity and the database proxy. The data entity is a design-time concept that allows designers to manage data objects throughout different design and maintenance activities. It includes data-type specification, documentation, specification of timing and quality properties, tracing of dependencies between data objects, and enables analysis and automated validation.

The database proxy is a run-time concept designed to allow the use of state-of-the-art database technologies in contemporary software-component technologies for embedded systems. Database proxies decouple components from an underlying database residing in the component framework. This allows components to remain encapsulated and reusable, while providing temporally predictable access to data maintained in a database, thus enabling the use of database technologies, which has previously excluded, in these systems.

To validate our proposed techniques, we present a tool implementation of the data entity as well as implementations of the database proxy approach, using commercial tools, the AUTOSAR standardized automotive software architecture, and automotive hardware.  Our results show that the presented techniques can contribute to the development of future component-based embedded real-time systems, by providing structured and efficient data management.

Place, publisher, year, edition, pages
Västerås: Mälardalen University, 2012
Series
Mälardalen University Press Dissertations, ISSN 1651-4238 ; 125
National Category
Computer and Information Sciences
Research subject
Computer Science
Identifiers
urn:nbn:se:mdh:diva-14511 (URN)978-91-7485-064-2 (ISBN)
Public defence
2012-06-01, Gamma, Mälardalen University, Västerås, 13:00 (English)
Opponent
Supervisors
Available from: 2012-04-26 Created: 2012-04-23 Last updated: 2018-01-12Bibliographically approved

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Nyström, DagSjödin, Mikael

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