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Architectures et processus de développement permettant la mise à jour dynamique de systèmes embarqués automobiles

Hélène Martorell 1
1 LAAS-TSF - Équipe Tolérance aux fautes et Sûreté de Fonctionnement informatique
LAAS - Laboratoire d'analyse et d'architecture des systèmes
Abstract : Currently the standard for embedded ECUs (Electronic Control Unit) in the automotive industry is AUTOSAR. One of the drawbacks of this architecture lies in its lack of flexibility. However, updates and customization of embedded systems are increasingly demanded and necessary. Indeed, systems are more and more complex and therefore require new methods and means to ease maintenance. Thus, from these observations, we study the possibilities for updates and resulting modifications (both on an architectural level and within the development process, and from a real-time point of view) in order to integrate within the AUTOSAR standard partial updates. This PhD thesis describes the software development process in an AUTOSAR context with a number of improvement we designed in this work. We also define concepts that allow to introduce placeholders for further updates within the embedded ECU. The development process has to be subsequently modified for integrating spaces for the updates along with the necessary mechanisms. Real-time problematic regarding partial updates in automotive systems is also considered here. In particular, we deal with sensitivity analysis that helps determine flexibility within the system. A number of implementation aspects are also detailed. In particular, the creation of the updates, versions management, use of embedded memory and dependability. All these concepts are finally applied on a proof of concept using an embedded application from Renault. We present here in details how the proposed approach can be used in practice.
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Hélène Martorell. Architectures et processus de développement permettant la mise à jour dynamique de systèmes embarqués automobiles. Informatique [cs]. Institut national polytechnique de Toulouse (INPT), 2014. Français. ⟨tel-02098199⟩



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