Publikationen: Software-Innovationen

Parameterization of fail-operational architectural patterns

In today’s cyber physical systems, adaptability concepts can be used to fulfill fail-operational requirements while enabling optimized resource utilization. However, the applicability of such concepts highly depends on the support for the engineering during system development.

Veröffentlichungstermin:

04/2015

Veröffentlichungsmedium:

Poster presented at 30th ACM/SIGAPP Symposium on Applied Computing, SAC 2015, Salamanca, Spain, 15th April 2015

Kontaktperson:

Dr. Gereon Weiß


Design of self-adaptation in distributed embedded systems

Nowadays, complex computers are integrated in numerous devices and are deployed in diverse application areas, for example in the automotive, avionic, health-care, and industrial automation domain. These embedded systems are evolving towards complex interconnected and adaptive systems.

Veröffentlichungstermin:

2015

Veröffentlichungsmedium:

München: Verlag Dr. Hut, 2015, 273 pp.
Zugl.: Augsburg, Univ., Diss., 2014
ISBN: 978-3-8439-1966-1
ISBN: 3-8439-1966-6

Kontaktperson:

Dr. Gereon Weiß


Challenges of a safe adaptation architecture for vehicles

The promising advent of fully electric vehicles and automated driving also means a shift towards fully electrical control of the existing and new vehicle functions. In particular, critical X-by-wire functions require sophisticated redundancy solutions. As a result, the overall Electric/Electronic (E/E) architecture of a vehicle is becoming even more complex and costly. The talk introduces the challenges of future vehicle software architectures.

Veröffentlichungstermin:

09/2014

Veröffentlichungsmedium:

Presentation held at the 33rd International Conference on Computer Safety, Reliability and Security (safeComp) 2014, International Workshop on Next Generation of System Assurance Approaches for Safety-Critical Systems (SASSUR), 9 September 2014, Firenze, Italy

Kontaktperson:

Dr. Gereon Weiß


Evaluation of an Analytic Model for Car Dynamics

In diesem Beitrag wird ein differentialgeometrisches Modell für Ein- und Zweispur-Fahrzeuge vorgestellt und untersucht, das es erlaubt, Zustandsparameter wie Lenkwinkel, Beschleunigungen und Raddrehgeschwindigkeiten aus einer Fahrzeugtrajektorie (in Form von Positionen über der Zeit) zu schätzen. Dies erlaubt die Rekonstruktion von Fahrmanövern aus Videodaten, sowie die Errechnung von Regelgrößen aus einer geplanten Trajektorie. Trotz seiner leichten Berechenbarkeit zeigt das Modell eine gute Genauigkeit.

Veröffentlichungstermin:

07/2014

Veröffentlichungsmedium:

Proceedings of the 2014 International Conference on Mechatronics and Control (ICMC)

Kontaktperson:

Dr. Dieter Willersinn


Memory concepts for enabling adaptivity in distributed embedded systems

Establishing cost and resource efficient dependability through means of adaptivity in safety-critical distributed embedded systems is a strenuous endeavour, as the varying requirements on resilience, control and efficiency across domains prohibits a single solution to suit all needs.

Veröffentlichungstermin:

06/2014

Veröffentlichungsmedium:

ACM SIGBED review. Online journal 11 (2014), No.3, pp.66-69
http://dl.acm.org/citation.cfm?id=J994
ISSN: 1551-3688

Kontaktperson:

Philipp Schleiß


Situation Prediction And Reaction Control (SPARC)

Bisherige Ansätze zum automatisierten Fahren übergeben die Fahrzeugkontrolle üblicherweise an spezialisierte Module für Kreuzungsverkehr, Parken, Hindernisvermeidung, usw., abhängig von der erkannten Verkehrssituation. Dieses Papier hingegen schlägt eine Alternative, die alle modellierten Ziele und Einflüsse simultan und in einem stetigen Zustandsraum berücksichtigt. Dieser holistische Ansatz erfordert keine harten Zustandswechsel, und orientiert sich am Verhalten eines menschlichen Fahrers.

Veröffentlichungstermin:

03/2014

Veröffentlichungsmedium:

Tagungsband 9. Workshop Fahrerassistenzsysteme
FAS 2014
ISBN 978-3-00-044955-0

Kontaktperson:

Dr. Dieter Willersinn


SafeAdapt - safe adaptive software for fully electric vehicles

The promising advent of Fully Electric Vehicles (FEVs) also induces a shift towards fully electronic control of existing and new vehicle functions. Hereby, critical functions, such as Brake- and Steer-by-Wire, require sophisticated redundancy solutions to ensure safety. As a result, the overall electric/electronic (E/E) architecture of a vehicle is becoming even more complex and costly.

Veröffentlichungstermin:

03/2014

Veröffentlichungsmedium:

Paper presented at 3rd Conference on Future Automotive Technology, CoFAT 2014, 17. /18. März 2014, TU München, Campus Garching

Kontaktperson:

Philipp Schleiß


Modeling and efficient solving of extra-functional properties for adaptation in networked embedded real-time systems

In this paper, we focus on modeling and efficient solving of extra-functional properties for embedded systems, in particular automotive systems. We introduce an integrated model of system constraints for efficient computation of software components being allocated to hardware platforms (ECUs), which is a prerequisite for runtime adaptation. For a set of over 126,000 constraints in a realistic automotive system, we compare SAT-solving and different heuristic search algorithms.

Veröffentlichungstermin:

11/2013

Veröffentlichungsmedium:

Journal of systems architecture 59 (2013), No.10,
pp.1067-1082
ISSN: 1383-7621

Kontaktperson:

Dr. Gereon Weiß


Context modeling for dynamic configuration of automotive functions

Current vehicles are usually equipped with an abundance of advanced driver assistant systems. Only a limited number of them can really be active permanently. This motivates our goal of providing the car with the means necessary to dynamically adapt the set of active functions to its current requirements. In this paper, we present a generic context modeling approach suitable for dynamic configuration of automotive functions.

Veröffentlichungstermin:

10/2013

Veröffentlichungsmedium:

Institute of Electrical and Electronics Engineers -IEEE-:
16th International IEEE Conference on Intelligent Transportation Systems, ITSC 2013:
Intelligent Transportation Systems for All Modes,
October 6-9, 2013, The Hague, Netherlands
New York, NY: IEEE, 2013
ISBN: 978-1-4799-2914-6
Pp.839-844

Kontaktperson:

Dr. Gereon Weiß


Integrated timing analysis in the model-driven design of automotive systems

Automotive electronic systems integrate steadily increasing number of functions. Model-driven development of such systems enables to handle their complexity. With the integration of software-components and their intricate interactions ensuring the non-functional behavior, like timing, becomes a crucial matter. Timing analysis allows the validation of these properties but is mostly only loosely integrated with the development process.

Veröffentlichungstermin:

09/2013

Veröffentlichungsmedium:

Bernardi, S.: 5th International Workshop on Non-functional Properties in Modeling: Analysis, Languages, Processes, NIM-ALP 2013.
Proceedings: Co-located with 16th International Conference on Model Driven Engineering Languages and Systems (MODELS 2013);
Miami, USA, September 29, 2013
Miami/Fla., 2013 (CEUR Workshop Proceedings 1074)
pp.41-49

Kontaktperson:

Dr. Gereon Weiß


Network performance evaluation for distributed embedded systems using feature models

In this paper, we focus on networked, embedded systems which may contain numerous electronic control units, connected by multiple network busses. Furthermore, such embedded systems support many runtime configurations. The main problem is to determine the network resource needs of all variations permitted at runtime, i.e. to calculate the worst case resource needs.

Veröffentlichungstermin:

07/2013

Veröffentlichungsmedium:

Institute of Electrical and Electronics Engineers -IEEE-:
18th International Conference on Engineering of Complex Computer Systems, ICECCS 2013.
Proceedings: 17-19 July 2013, Singapore
Los Alamitos, Calif.: IEEE Computer Society Conference Publishing Services (CPS), 2013
ISBN: 978-0-7695-5007-7 (Print)
pp.46-55

Kontaktperson:

Martin Manderscheid


Verifying & validating non-functional properties of automotive software architectures in early design stages

An increasing number of functions in modern automobiles are software-based. A modern automotive architecture contains up to 100 electronic control units (ECU) that communicate with one another to ensure proper vehicle functionality. The requirements and the set of provided functionalities of automotive embedded systems are growing, the complexity of these systems is continuously increasing as well.

Veröffentlichungstermin:

06/2013

Veröffentlichungsmedium:

VDI-Wissensforum GmbH:
AUTOREG 2013 : Steuerung und Regelung von Fahrzeugen und Motoren, Baden-Baden, 05. und 06. Juni 2013
Düsseldorf: VDI Verlag, 2013 (VDI-Berichte 2196)
ISBN: 978-3-18-092196-9
ISSN: 0083-5560
pp.421-430

Kontaktperson:

Alexander Stante


Towards runtime adaptation in AUTOSAR

In many industrial application domains networked embedded systems realize safety-critical applications. In such systems, adapting the software distribution at runtime can be used to optimize system configurations, to add new features or to handle failure cases. The main objective of this paper is to devise a flexible and efficient solution for runtime adaptation in AUTOSAR, which requires minimal changes to the current architecture.

Veröffentlichungstermin:

05/2013

Veröffentlichungsmedium:

ACM SIGBED review. Online journal 10 (2013), No.4, pp.17-20
http://dl.acm.org/citation.cfm?id=J994
ISSN: 1551-3688

Kontaktperson:

Dr. Gereon Weiß


Towards network-wide energy estimation for adaptive embedded systems

This paper discusses the next steps towards how system developers can easily and accurately evaluate the impact of their system design choices on energy consumption during the early stages of the design process. To do this, energy estimations in every phase of system development are necessary. Our research focuses on adaptive systems, where applications are activated according to the actual need.

Veröffentlichungstermin:

04/2013

Veröffentlichungsmedium:

Bunse, Christian (Hrsg.): 2nd Workshop EASED@BUIS 2013. Energy Aware Software-Engineering and Development.
Proceedings : 25. April 2013, Oldenburg, held in conjunction with the 5th BUIS-Days: IT-based

Kontaktperson:

Patrick Heinrich


ERNEST - framework for the early verification and validation of networked embedded systems

Since the requirements and the set of provided functionalities of networked embedded systems are growing, the complexity of these systems is continuously increasing as well. Early verification of embedded systems is necessary to prevent failures and to save costs during the design. Considering solely functional properties of the software for networked embedded systems is insufficient to satisfy the quality requirements in most of their application domains.

Veröffentlichungstermin:

02/2013

Veröffentlichungsmedium:

Embedded world 2013. Exhibition & conference.
CD-ROM: It's a smarter world; Proceedings; 26 - 28 February, 2013, Nuremberg, Germany
Haar: WEKA Fachmedien, 2013
ISBN: 978-3-645-50113-2

Kontaktperson:

Alexander Stante


Network-wide energy optimization for adaptive embedded systems

This paper discusses network-wide energy optimization of embedded systems which can adapt by switching configurations. We model applications and their task chains in a network of embedded devices, including sleep modes and change of configuration, which provides a basic adaptation mechanism.

Veröffentlichungstermin:

2013

Veröffentlichungsmedium:

ACM SIGBED review. Online journal 10 (2013), No.1, pp.33-36
http://dl.acm.org/citation.cfm?id=J994
ISSN: 1551-3688

Kontaktperson:

Patrick Heinrich


Selbst-Adaptivität in vernetzten eingebetteten Systemen unter Berücksichtigung nicht-funktionaler Anforderungen

Viele technische Systeme, wie z.B. Automobile, Flugzeuge oder Industrieanlagen bestehen heute aus einer wachsenden Anzahl miteinander verbundener Computersysteme, sog. vernetzter eingebetteter Systeme. Diese übernehmen Aufgaben wie die Überwachung und Steuerung von Geräten, sowie die Verarbeitung von Daten und Signalen.

Veröffentlichungstermin:

2013

Veröffentlichungsmedium:

München: Verlag Dr. Hut, 2013, 225 pp.
Zugl.: Augsburg, Univ., Diss., 2013
ISBN: 978-3-8439-0994-5
ISBN: 3-8439-0994-6

Kontaktperson:

Prof. Dr. Ing. Rudi Knorr


AEROS - Automatische Erfassung von Objekten aus Bildfolgen des Straßenraums

Ziel des Projektes ist die automatische Erfassung und Positionsbestimmung von relevanten Objekten im Straßenraum, wie z.B. von Verkehrszeichen, Ampeln, Fahrbahnmarkierungen und Schutzplanken. Diese Informationen sind besonders wichtig, um die Verkehrssicherheit zu Gewährleisten und um den Verkehrsfluß zu optimieren. Dazu ist eine regelmäßige Überprüfung des Straßenraums notwendig. So kann z.B. festgestellt werden, ob sich alle Verkehrszeichen noch an ihrem vorgesehenen Ort befinden oder durch äußere Einflüsse unleserlich geworden sind. Für die Erfassung werden Straßeninspektionsfahrzeuge eingesetzt, die mit mehreren Kameras bestückt sind. Die Positionsbestimmung der einzelnen detektierten Objekte erfolgt mittels GPS und visueller Entfernungsmessung.

Veröffentlichungstermin:

2012

Kontaktperson:

Dr. Ronald Rösch, Falco Hirschenberger