On functional safety methods: A system of systems approach

Saberi, Arash Khabbaz; Barbier, E.; Benders, F.P.A.; Brand, Mark van den

doi:10.1109/syscon.2018.8369598

Cited by 21 publications

(11 citation statements)

References 6 publications

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“…Clearly, replications are required to verify the generalizability and scalability of our method. Nonetheless, our results corroborate the existing body of knowledge [17,38,46] in showing that the current safety standard FSRs from the cooperative perspective. The results of our case study show better coverage of safety goals by providing additional FSRs as compared to the ISO 26262 process [28].…”

Section: Interpretation Of Resultssupporting

confidence: 89%

“…This can mean that a low-risk safety requirement from a single-vehicle perspective can have catastrophic effects on other cooperating vehicles [40]. To create a functionally safe architecture from a cooperative perspective, existing studies have extended the standard guidelines [32,46] or presented an architecture framework [40]. Yet, checking the safety of software architecture of an existing vehicle for cooperative driving, remains an open question.…”

Section: Introductionmentioning

confidence: 99%

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A Functional Safety Assessment Method for Cooperative Automotive Architecture

Kochanthara¹,

Rood²,

Saberi³

et al. 2021

Preprint

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The scope of automotive functions has grown from a single vehicle as an entity to multiple vehicles working together as an entity, referred to as cooperative driving. The current automotive safety standard, ISO 26262, is designed for single vehicles. With the increasing number of cooperative driving capable vehicles on the road, it is now imperative to systematically assess the functional safety of architectures of these vehicles. Many methods are proposed to assess architectures with respect to different quality attributes in the software architecture domain, but to the best of our knowledge, functional safety assessment of automotive architectures is not explored in the literature. We present a method, that leverages existing research in software architecture and safety engineering domains, to check whether the functional safety requirements for a cooperative driving scenario are fulfilled in the technical architecture of a vehicle. We apply our method on a real-life academic prototype for a cooperative driving scenario, platooning, and discuss our insights.

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Section: Interpretation Of Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

A Functional Safety Assessment Method for Cooperative Automotive Architecture

Kochanthara¹,

Rood²,

Saberi³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, automotive engineering has strong ties with modeldriven engineering [52]; in developing [53], maintaining [54] and testing models [55][56][57]. The impact of tight safety requirements on software architecture has also been analysed in literature [58,59].…”

Section: Related Workmentioning

confidence: 99%

A Standard Driven Software Architecture for Fully Autonomous Vehicles

Serban¹,

Poll²,

Visser³

2020

JASEN

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The development of self-driving vehicles is often regarded as adding a layer of intelligence on top of classic vehicle platforms. However, the amount of software needed to reach autonomy will exceed the software deployed for operation of normal vehicles. As complexity increases, the demand for proper structure also increases. Moreover, the shift from open, deterministic components to more opaque, probabilistic software components raises new challenges for system designers. In this paper we introduce a functional software architecture for fully autonomous vehicles aimed to standardise and ease the development process. Existing literature presents past experiments with autonomous driving or implementations specific to limited domains (e.g. winning a competition). The architectural solutions are often an after-math of building or evolving an autonomous vehicle and not the result of a clear software development life-cycle. A major issue of this approach is that requirements cannot be traced with respect to functional components and several components group most functionality. Therefore, it is often difficult to adopt the proposals. In this paper we take a prescriptive approach starting with requirements from a widely adopted automotive standard. We follow a clear software engineering process, specific to the automotive industry. During the design process, we make extensive use of robotic architectures -which seem to be often ignored by automotive software engineers -to support standard driven requirements.

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“…Certainly, many of these standards are applicable and valuable to the mitigation of any vulnerability generated in the design process. However, if the scope of the study extends beyond the extent of the standards, then a more tailored approach may be required (see [57]). For example, a design that employs functional safety practice may adopt the use of risk matrices to categorize likelihood and consequences of failures of a biomedical device to deliver an output by amalgamating both variables into a measure of risk given a type of failure.…”

Section: G Vulnerability Exposure and Riskmentioning

confidence: 99%

Engineering-Based Design Methodology for Embedding Ethics in Autonomous Robots

et al. 2019

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This paper explores the design process of robotics and autonomous systems using a co-design approach, applied ethics, and values-driven methods. Specifically, the approach seeks to move beyond traditional risk assessment toward a greater consideration of end-user exposure. The goal of the ethics-based co-design approach is to identify end-user and stakeholder values that guide the minimization of end-user vulnerability associated with the employment of autonomous systems. This design process is also used to identify positive consequences that probably increase human wellbeing as opposed to simply avoiding harm. We argue that biomedical autonomous systems design, during the preclinical phase, should bring together diverse stakeholders that would not traditionally be involved in design. We also argue that embedding ethical considerations in the engineering design process should bring together a diverse range of stakeholders to more accurately appreciate possible end-user implications of a design. With complex systems design, such as biotechnologies, greater awareness is necessary of the ethical implications of designed autonomy to end-user exposure.

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On functional safety methods: A system of systems approach

Cited by 21 publications

References 6 publications

A Functional Safety Assessment Method for Cooperative Automotive Architecture

A Functional Safety Assessment Method for Cooperative Automotive Architecture

A Standard Driven Software Architecture for Fully Autonomous Vehicles

Engineering-Based Design Methodology for Embedding Ethics in Autonomous Robots

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