Download or read book Predictable Platforms for Safety critical Embedded Systems written by Sidharta Andalam and published by . This book was released on 2013 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Safety-critical embedded systems, commonly found in automotive, space, and health-care, are highly reactive and concurrent. Their most important characteristics are that they require both functional and timing correctness. C has been the language of choice for programming such systems. However, C lacks many features that can make the design process of such systems seamless while also maintaining predictability. In contrast, the synchronous programming paradigm offers an alternative approach for programming safety-critical applications. The formal semantics of synchronous programming languages establish a well-defined behaviour of a program. The synchronous paradigm adopts an abstract notion of time by viewing a system as evolving in a sequence of discrete steps. This simplifies program debugging, testing and validation, and leads to clear temporal constructs. These features make synchronous languages more expressive, but also makes them less familiar to programmers trained in conventional languages, like C. In this thesis, we address the need for a C-based design framework for programming safety-critical applications. Inspired by the synchronous programming paradigm, we propose the following. (1) A new language called, Precision Timed C (PRET-C) that provides a small set of extensions to a subset of C to facilitate effective concurrent programming of safety-critical applications. We present a new synchronous semantics for PRET-C and guarantee that all PRET-C programs are deterministic, reactive, and provides thread-safe communication via shared memory access. (2) A new predictable architecture, called ARPRET. It offers the ability to design time predictable architectures through simple customizations of soft-core processors. We have designed ARPRET particularly for efficient and predictable execution of PRET-C. (3) A new static timing analyser for validating the timing deadlines of a synchronous program. Here, we consider pruning of infeasible paths for tighter analysis along with new fast and precise technique for analysing cache-based architectures. (4) A new cache analysis approach for analysing the behaviour of instructions exe-cuting on a direct mapped cache. Using a binary representation and a new abstraction, we reduce the analysis time without sacrificing the precision. This offers the ability to analyse large PRET-C programs. The proposed framework in this thesis is implemented and evaluated as follows. Firstly, the PRET-C language is supported using C macros. Experimental results reveal that PRET-C yields significantly more efficient code compared to other C-based synchronous languages. Secondly, the ARPRET architecture is synthesised on an FPGA and it is shown through extensive benchmarking that this significantly improves throughput of PRET-C programs, while maintaining predictability. Thirdly, the proposed static timing analyser is based on the model checking technique. It is very effective in pruning infeasible paths. Experiments show that the proposed approach gives significantly more precise results than the current state-of-the-art static timing analysers for synchronous programs. Finally, the proposed cache analysis approach is very precise and completes within a reasonable amount of time. This is unlike the existing cache analysing approaches where either precision or scalability (analysis time) is sacrificed. Overall, results demonstrate the viability of the ideas presented in this thesis for the development and verification of large safety-critical applications.

Download or read book Formal Techniques for Safety Critical Systems written by Cyrille Artho and published by Springer. This book was released on 2016-02-02 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 4th International Workshop on Formal Techniques for Safety-Critical Systems, FTSCS 2015, held in Paris, France, in November 2015. The 15 revised full papers presented together with one invited talk and two tool papers were carefully reviewed and selected from 41 submissions. The papers are organized in topical sections on timed systems; railway systems; fault tolerance; automotive systems; software and systems analysis; tools.

Download or read book Embedded Software Development for Safety Critical Systems Second Edition written by Chris Hobbs and published by CRC Press. This book was released on 2019-08-16 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a book about the development of dependable, embedded software. It is for systems designers, implementers, and verifiers who are experienced in general embedded software development, but who are now facing the prospect of delivering a software-based system for a safety-critical application. It is aimed at those creating a product that must satisfy one or more of the international standards relating to safety-critical applications, including IEC 61508, ISO 26262, EN 50128, EN 50657, IEC 62304, or related standards. Of the first edition, Stephen Thomas, PE, Founder and Editor of FunctionalSafetyEngineer.com said, "I highly recommend Mr. Hobbs' book."

Download or read book Predictable and Runtime Adaptable Network On Chip for Mixed critical Real time Systems written by Sebastian Tobuschat and published by Cuvillier. This book was released on 2019-03-07 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: The industry of safety-critical and dependable embedded systems calls for even cheaper, high performance platforms that allow flexibility and an efficient verification of safety and real-time requirements. In this sense, flexibility denotes the ability to (online) adapt a system to changes (e.g. changing environment, application dynamics, errors) and the reuse-ability for different use cases. To cope with the increasing complexity of interconnected functions and to reduce the cost and power consumption of the system, multicore systems are used to efficiently integrate different processing units in the same chip. Networks-on-chip (NoCs), as a modular interconnect, are used as a promising solution for such multiprocessor systems on chip (MPSoCs), due to their scalability and performance. Hence, future NoC designs must face the aforementioned challenges. For safety-critical systems, a major goal is the avoidance of hazards. For this, safety-critical systems are qualified or even certified to prove the correctness of the functioning under all possible cases. A predictable behavior of the NoC can help to ease the qualification process (e.g. formal analysis) of the system. To achieve the required predictability, designers have two classes of solutions: isolation (quality of service (QoS) mechanisms) and (formal) analysis. For mixed-criticality systems, isolation and analysis approaches must be combined to efficiently achieve the desired predictability. Isolation techniques are used to bound interference between different application classes. And analysis can then be applied verifying the real-time applications and sufficient isolation properties. Traditional NoC analysis and architecture concepts tackle only a subpart of the challenges-they focus on either performance or predictability. Existing, predictable NoCs are deemed too expensive and inflexible to host a variety of applications with opposing constraints. And state-of-the-art analyses neglect certain platform pro

Download or read book Embedded Software Development for Safety Critical Systems written by Chris Hobbs and published by CRC Press. This book was released on 2017-09-07 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: "I highly recommend Mr. Hobbs' book." - Stephen Thomas, PE, Founder and Editor of FunctionalSafetyEngineer.com Safety-critical devices, whether medical, automotive, or industrial, are increasingly dependent on the correct operation of sophisticated software. Many standards have appeared in the last decade on how such systems should be designed and built. Developers, who previously only had to know how to program devices for their industry, must now understand remarkably esoteric development practices and be prepared to justify their work to external auditors. Embedded Software Development for Safety-Critical Systems discusses the development of safety-critical systems under the following standards: IEC 61508; ISO 26262; EN 50128; and IEC 62304. It details the advantages and disadvantages of many architectural and design practices recommended in the standards, ranging from replication and diversification, through anomaly detection to the so-called "safety bag" systems. Reviewing the use of open-source components in safety-critical systems, this book has evolved from a course text used by QNX Software Systems for a training module on building embedded software for safety-critical devices, including medical devices, railway systems, industrial systems, and driver assistance devices in cars. Although the book describes open-source tools for the most part, it also provides enough information for you to seek out commercial vendors if that’s the route you decide to pursue. All of the techniques described in this book may be further explored through hundreds of learned articles. In order to provide you with a way in, the author supplies references he has found helpful as a working software developer. Most of these references are available to download for free.

Download or read book High Performance and Time Predictable Embedded Computing written by Pinho, Luis Miguel and published by River Publishers. This book was released on 2018-07-04 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays, the prevalence of computing systems in our lives is so ubiquitous that we live in a cyber-physical world dominated by computer systems, from pacemakers to cars and airplanes. These systems demand for more computational performance to process large amounts of data from multiple data sources with guaranteed processing times. Actuating outside of the required timing bounds may cause the failure of the system, being vital for systems like planes, cars, business monitoring, e-trading, etc. High-Performance and Time-Predictable Embedded Computing presents recent advances in software architecture and tools to support such complex systems, enabling the design of embedded computing devices which are able to deliver high-performance whilst guaranteeing the application required timing bounds. Technical topics discussed in the book include: Parallel embedded platformsProgramming modelsMapping and scheduling of parallel computationsTiming and schedulability analysisRuntimes and operating systems The work reflected in this book was done in the scope of the European project P‑SOCRATES, funded under the FP7 framework program of the European Commission. High-performance and time-predictable embedded computing is ideal for personnel in computer/communication/embedded industries as well as academic staff and master/research students in computer science, embedded systems, cyber-physical systems and internet-of-things.

Download or read book Proceedings of the 4th Many Core Applications Research Community MARC Symposium written by Peter Tröger and published by Universitätsverlag Potsdam. This book was released on 2012 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: In continuation of a successful series of events, the 4th Many-core Applications Research Community (MARC) symposium took place at the HPI in Potsdam on December 8th and 9th 2011. Over 60 researchers from different fields presented their work on many-core hardware architectures, their programming models, and the resulting research questions for the upcoming generation of heterogeneous parallel systems.

Download or read book Mission Critical and Safety Critical Systems Handbook written by Kim Fowler and published by Newnes. This book was released on 2009-11-19 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook provides a consolidated, comprehensive information resource for engineers working with mission and safety critical systems. Principles, regulations, and processes common to all critical design projects are introduced in the opening chapters. Expert contributors then offer development models, process templates, and documentation guidelines from their own core critical applications fields: medical, aerospace, and military. Readers will gain in-depth knowledge of how to avoid common pitfalls and meet even the strictest certification standards. Particular emphasis is placed on best practices, design tradeoffs, and testing procedures. Comprehensive coverage of all key concerns for designers of critical systems including standards compliance, verification and validation, and design tradeoffs Real-world case studies contained within these pages provide insight from experience

Download or read book Embedded Systems and Software Validation written by Abhik Roychoudhury and published by Morgan Kaufmann. This book was released on 2009-04-29 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern embedded systems require high performance, low cost and low power consumption. Such systems typically consist of a heterogeneous collection of processors, specialized memory subsystems, and partially programmable or fixed-function components. This heterogeneity, coupled with issues such as hardware/software partitioning, mapping, scheduling, etc., leads to a large number of design possibilities, making performance debugging and validation of such systems a difficult problem. Embedded systems are used to control safety critical applications such as flight control, automotive electronics and healthcare monitoring. Clearly, developing reliable software/systems for such applications is of utmost importance. This book describes a host of debugging and verification methods which can help to achieve this goal. Covers the major abstraction levels of embedded systems design, starting from software analysis and micro-architectural modeling, to modeling of resource sharing and communication at the system level Integrates formal techniques of validation for hardware/software with debugging and validation of embedded system design flows Includes practical case studies to answer the questions: does a design meet its requirements, if not, then which parts of the system are responsible for the violation, and once they are identified, then how should the design be suitably modified?

Download or read book Explainable Transparent Autonomous Agents and Multi Agent Systems written by Davide Calvaresi and published by Springer Nature. This book was released on 2020-07-07 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the proceedings of the Second International Workshop on Explainable, Transparent Autonomous Agents and Multi-Agent Systems, EXTRAAMAS 2020, which was due to be held in Auckland, New Zealand, in May 2020. The conference was held virtually due to the COVID-19 pandemic. The 8 revised and extended papers were carefully selected from 20 submissions and are presented here with one demo paper. The papers are organized in the following topical sections: explainable agents; cross disciplinary XAI; explainable machine learning; demos.

Download or read book Self Organization in Embedded Real Time Systems written by M. Teresa Higuera-Toledano and published by Springer Science & Business Media. This book was released on 2012-11-09 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the emerging field of self-organizing, multicore, distributed and real-time embedded systems. Self ‐organization of both hardware and software can be a key technique to handle the growing complexity of modern computing systems. Distributed systems running hundreds of tasks on dozens of processors, each equipped with multiple cores, requires self‐organization principles to ensure efficient and reliable operation. This book addresses various, so-called Self‐X features such as self-configuration, self‐optimization, self‐adaptation, self‐healing and self‐protection.

Download or read book Computer Safety Reliability and Security written by Stefano Tonetta and published by Springer. This book was released on 2017-09-01 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of five workshops co-located with SAFECOMP 2017, the 36th International Conference on Computer Safety, Reliability, and Security, held in Trento, Italy, in September 2017. The 38 revised full papers presented together with 5 introductory papers to each workshop, and three invited papers, were carefully reviewed and selected from 49 submissions. This year's workshops are: ASSURE 2017 – Assurance Cases for Software-Intensive Systems; DECSoS 2017 – ERCIM/EWICS/ARTEMIS Dependable Embedded and Cyber-Physical Systems and Systems-of-Systems; SASSUR 2017 – Next Generation of System Assurance Approaches for Safety-Critical Systems; TIPS 2017 – Timing Performance in Safety Engineering; TELERISE 2017 Technical and legal Aspects of Data Privacy and Security.

Download or read book Software Engineering for Embedded Systems written by Mark Kraeling and published by Elsevier Inc. Chapters. This book was released on 2013-04-01 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this chapter, we cover the aspects of developing safety-critical software. The first part of the chapter covers project planning, and the crucial steps that are needed to scope the effort and getting started. It offers insights into managing safety-critical requirements and how to meet them during the development. Key strategies for project management are also provided. The second part of the chapter goes through an analysis of faults, failures, and hazards. It includes a description of risk analysis. The next part of the chapter covers a few safety-critical architectures that could be used for an embedded system. The final part of the chapter covers software implementation guidelines for safety-critical software development.

Download or read book Fieldbus Systems and Their Applications 2003 written by D Dietrich and published by Elsevier. This book was released on 2003-12-18 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: A proceedings volume from the 6th IFAC International Conference, Puebla, Mexico, 14-25 November 2005

Download or read book Computer Safety Reliability and Security written by Andrea Bondavalli and published by Springer. This book was released on 2014-08-27 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of 6 workshops co-located with SAFECOMP 2014, the 33rd International Conference on Computer Safety, Reliability, and Security, held in Florence, Italy, in September 2014. The 32 revised full and 10 short papers presented were carefully reviewed and selected from 58 submissions. They are complemented with 6 introduction to each of the workshops: Architecting Safety in Collaborative Mobile Systems, ASCoMS'14; ERCIM/EWICS/ARTEMIS Workshop on Dependable Embedded and Cyberphysical Systems and Systems-of-Systems, DECSoS'14; DEvelopment, Verification and VAlidation of cRiTical Systems, DEVVARTS'14; Integration of Safety and Security Engineering, ISSE'14; Reliability and Security Aspects for Critical Infrastructure Protection, ReSA4CI'14; Next Generation of System Assurance Approaches for Safety-Critical Systems, SASSUR'14.

Download or read book Distributed Real Time Architecture for Mixed Criticality Systems written by Hamidreza Ahmadian and published by CRC Press. This book was released on 2018-09-05 with total page 709 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes a cross-domain architecture and design tools for networked complex systems where application subsystems of different criticality coexist and interact on networked multi-core chips. The architecture leverages multi-core platforms for a hierarchical system perspective of mixed-criticality applications. This system perspective is realized by virtualization to establish security, safety and real-time performance. The impact further includes a reduction of time-to-market, decreased development, deployment and maintenance cost, and the exploitation of the economies of scale through cross-domain components and tools. Describes an end-to-end architecture for hypervisor-level, chip-level, and cluster level. Offers a solution for different types of resources including processors, on-chip communication, off-chip communication, and I/O. Provides a cross-domain approach with examples for wind-power, health-care, and avionics. Introduces hierarchical adaptation strategies for mixed-criticality systems Provides modular verification and certification methods for the seamless integration of mixed-criticality systems. Covers platform technologies, along with a methodology for the development process. Presents an experimental evaluation of technological results in cooperation with industrial partners. The information in this book will be extremely useful to industry leaders who design and manufacture products with distributed embedded systems in mixed-criticality use-cases. It will also benefit suppliers of embedded components or development tools used in this area. As an educational tool, this material can be used to teach students and working professionals in areas including embedded systems, computer networks, system architecture, dependability, real-time systems, and avionics, wind-power and health-care systems.

Download or read book Time Predictable Embedded Software on Multi Core Platforms written by Sudipta Chattopadhyay and published by Now Publishers. This book was released on 2014-07-24 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph provides the reader with a thorough background on time-predictability for multi-core platforms. It surveys and discusses the research activities carried out by several research groups in this area and provides a comprehensive overview of the state-of-the-art.