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XXII International Symposium on Information, Communication and Automation Technologies, ICAT

作者： Zamira Daw Marcus Vetter Josef Boercsoek Institute of Embedded Systems Hochschule Mannheim-University of Applied Sciences Mannheim Germany Department of Computer Architecture and System Programming University of Kassel Kassel Germany

Data flow processing is a common task of embedded systems which is usually modeled as a pipeline. Errors in a block of this pipeline can be propagated through it thus leading to unexpected and erroneous behaviors. For safety related applications, this pipeline has to be able to identify and react to failures. The DMOSES model-driven development method uses deterministic UML activities to describe and implement data flow processing. This method ensures deterministic behavior of concurrent processing. Design by Contract defines formal, precise and verifiable interfaces for software components. We propose a development method for safe data flow processing based on the integration of this concept in deterministic UML activities. This integration allows the identification of errors by detection of contracts violation. This paper presents an extension of the DMOSES tool for contracts verification at the model level and their monitoring at runtime.

关键词： Unified modeling language Contracts Monitoring Embedded systems Object oriented modeling Safety Pins

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Degradable on-chip safety controller with intra-chip communication for steer-by-wire systems

Degradable on-chip safety controller with intra-chip communi...

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International Symposium on Telecommunications (BIHTEL)

作者： Ali Hayek Evzudin Ugljesa Michael H. Schwarz Josef Börcsök Adnan Salihbegovic Chair for Computer Architecture and System Programming University of Kassel Kassel Germany Faculty of electrical engineering University of Sarajevo Sarajevo Bosnia and Herzegovina

High reliability and high availability are essential aspects for all critical elements used in automotive applications. This is particularly true for control and steering systems. In this regard, numerous steer by wire (x-by-wire) concepts were developed over the years. Most of them considered only standard single microcontroller system architectures with a low degree of reliability according to international reliability and safety standards. This paper presents a novel concept for a degradable safety controller for steer-by-wire systems. Based on a safety-related 1004-architecture, the presented concept offers higher safety, reliability and availability.

关键词： Safety IEC standards ISO standards Vehicles system-on-a-chip Redundancy

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Design of a Novel Safe Approach to Monitor Drivers While Operating Their Cars

Design of a Novel Safe Approach to Monitor Drivers While Ope...

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International Conference on Advances in Biomedical Engineering (ICABME)

作者： Aseel Elhawawsha Carla Zeine Roy Abi Zeid Daou Dominik Kalinowski Joseph Khattar Samer Telawi Josef Boercsoek Department of Computer Architecture and System Programming University of Kassel Kassel Germany Mechatronics Eng. Department Saculty of Engineering Université La Sagesse Beirut Lebanon

Road accidents have been known to be one of the leading death causes around the world for a long time. Thus, cars and all kinds of road vehicles form a huge source of danger, and they relate to multiple high risks. There are many factors that can contribute to road traffic accidents such as the health condition of the driver if a medical emergency event happened while driving, drowsiness, or mind-wandering. The proposed system can monitor the behavior of the driver while driving as well as his/her health status. Moreover, it analyzes the monitored data, alerts the driver in a timely manner, and assists him/her in adjusting the driving behavior. Different dangerous and risky situations which can be faced during driving can be captured and avoided by using such a system which leads at the end to increase road traffic safety and reduce vehicle collisions. Notifications are developed in cases of drowsiness, loss of focus, or other concerns that may emerge while driving. However, when the driver's ability to operate the vehicle safely is hampered by a health concern, the implemented system is only able at this stage to alarm the driver itself and the surrounding cars as a first level of alarms.

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New contribution to the analysis of stochastic processes for critical systems to increase reliability

New contribution to the analysis of stochastic processes for...

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XXII International Symposium on Information, Communication and Automation Technologies, ICAT

作者： Ossmane Krini Jamal Krini Abderrahim Krini Josef Börcsök Department of Computer Architecture and System P. University of Kassel Kassel Germany

The paper provides an overview of how to create an estimator focusing on failure-defection in safety related systems. Stochastic play a very important role in safety technology. With the help of it, safety systems may be released reliably after an assessment. With the help of the probability theory meaningful statements are achieved and based on them, realistic forecasts may be given. However, in order that reliable forecasts can be conducted, new approaches in thinking need to be developed. This paper serves to give a short synopsis about the actual problem of the probabilistic safety technology on the base of stochastic. In that, the test methods, however, plays the most important role as the test results are source vectors for probabilistic models. However, this paper tries to describe a suitable, innovative method that will correctly estimate the safety parameters. The first part explains the necessary basic tools. Furthermore, the safety technology is explained with stochastic playing a central role in it. Following this, the approach for the construction of the estimator is introduced. Concluding, the summary and an outlook will be given.

关键词： Safety Mathematical model Exponential distribution Stochastic processes Probabilistic logic Reliability theory

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Determination of Bit Error and Residual Error Rates for Safety Critical Communication

Determination of Bit Error and Residual Error Rates for Safe...

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ICONS International Conference on systems

作者： J. Borcsok H.-T. Hannen Computer architecture & System programming University of Kassel Kassel Germany HIMA Paul Hildebrandt GmbH + Co KG Brühl Germany

The probability of failure rate and error rate are important indicators for the assessment of applications for highspeed communication systems. The paper presents causes of faults and theoretical and practical methods... 详细信息

关键词： Error analysis Safety Manufacturing automation Manufacturing industries Production Automatic control Error probability Control systems Electrical equipment industry Guidelines

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Optics in computer architectures: Basis of WDM, Technologies and Potentials

Optics in Computer Architectures: Basis of WDM, Technologies...

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ICONS International Conference on systems

作者： Y. Wang T. Kusserrow S. Irmer A. Hasse M. Bartels N. Dharmarasu H. Hillmer J. Borcsok O. Mikami Institute of Nanostructure Technologies and Analytics (INA) University of Kassel Kassel Germany Department of Computer Architecture and System Programming University of Kassel Germany Department of Information Telecommunication and Electronics Tokai University Hiratsuka-shi Japan

We present novel concepts, technologies and potentials of optical data communication, especially for future computer architectures. The WDM (wavelength division multiplexing) and the optical wiring technologies are explained in detail. Experimental results of tunable optical filters, which play a major role in WDM systems, are reported. New concepts for novel optical interconnectors and novel miniaturized lasers for direct generation of green light are proposed as examples for possible next generation components to improve the performance of optical communication based computer architecture.

关键词： Optical computing computer architecture Wavelength division multiplexing Optical filters Optical interconnections Data communication Wiring Tunable circuits and devices Optical devices Optical fiber communication

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Advances of OPC client server architectures for maintenance strategies - A research and development area not only for industries

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WSEAS Transactions on systems and Control 2008年第3期3卷 195-207页

作者： Schwarz, M.H. Boercsoek, J. University of Kassel Department of Computer-architecture and System-programming Wilhelmshoeher Allee 34121 Kassel Germany HIMA Paul Hildebrandt GmbH + Co KG Albert-Bassermann-Str. 28 68782 Brühl Germany

OPC is a matured and accepted standard in industries, but hardly used in industrial applications developed at universities, especially in Europe. Publications in this area, either using OPC-communication or developing applications have been hardly increased over the past several years. This paper reports the current state of the standard, but also describes current problems and how they can be managed and overcome. The authors also give an overview of the recently published new standard, which is called: OPC unified approach. After the fundamentals are described in this paper, the authors present their experiences with OPC to combine it with methods and procedures to develop a modern maintenance system. It also reports current developments at the department of computer architecture and system programming at the university of kassel.

关键词： Industrial research

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HICore1: “Safety on a chip” turnkey solution for industrial control

HICore1: “Safety on a chip” turnkey solution for industria...

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International Conference on Application Specific systems (ASAP), architectures and Processors

作者： Ali Hayek Bashier Machmur Michael Schreiber Josef Börcsök Stefan Gölz Mario Epp University of Kassel Chair for Computer Architecture and System Programming Kassel Germany HIMA Paul Hildebrandt GmbH + Co KG Chip-based Solutions Bruhl Germany

In this paper a complete safety controller on a single chip is presented. HICore 1 is a comprehensive solution that includes a certified application specific integrated circuit for safety-critical applications according to the safety standard IEC 61508, meeting the safety integrity level SIL3. It also meets the requirements of the standard EN 13849 Performance Level e. A SIL3 operating system and a SIL3 middleware complement the presented safety chip solution. Based on the presented solution, the smallest certified safety controller represents an innovative product and allows system manufacturers to create safe solutions ready for certification.

关键词： Safety IEC standards computer architecture Communication systems system-on-chip programming

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Concept of an Optical Distance and Speed Sensor Using Novel Offsetless Spatial Frequency Filters in the Area of Functional Safety

Concept of an Optical Distance and Speed Sensor Using Novel ...

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IEEE International Symposium on Industrial Electronics (ISIE)

作者： Frank Wasinski Werner Bonath Ubbo Ricklefs Josef Börcsök Michael Schwarz Eike Hahn Dept. of Electrical Engineering and Information Technology THM University of Applied Sciences Giessen Germany ICAS Institute for Computer Architecture and System Programming University of Kassel Kassel Germany

Optical speed sensors based on the spatial frequency filter method are a proven technology that offer high measurement accuracy over a wide speed range. Newly developed variants also enable measurements at very low speeds and increase the robustness of the method [1]. This makes the sensor very suitable for use in the area of functional safety. A measurement chain up to safety integrity level 3 (SIL3) should be feasible via a combination with a safety system on a chip (SoC) for evaluating the measurement data and an extension of the sensor module to include safety-related elements [2], [3]. By integrating the sensor at IC level, a compact overall solution is to be made possible. After the first successful tests with the safety SoC, further examinations of the measuring method with regard to functional safety are now necessary.

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A Practical Approach for Reliability Prediction of Safety Critical Software Using Multi-Model Ensemble Techniques

A Practical Approach for Reliability Prediction of Safety Cr...

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International Conference on system Reliability and Science (ICSRS)

作者： Aymen Ouertani Ossmane Krini Habil. Josef Börcsök Institute of functional safety & cyber security Baden-Wuerttemberg Cooperative State University Lörrach Germany Computer Architecture und System Programming University of Kassel Kassel Germany

This paper introduces a novel and comprehensive approach for estimating the reliability of safety critical software components in autonomous vehicle motion systems. The proposed approach in this paper presents a combination software reliability model (CSRM) that integrates multiple non-homogeneous Poisson process (NHPP) software reliability growth models (SRGMs) to achieve a reasonable compromise between accuracy, the trade-off between the goodness of fit and the simplicity, and stability. By using machine learning techniques, the CSRM effectively combines the strengths of individual SRGMs while mitigating their weaknesses through suitable evaluation and calibration techniques. The developed CSRM has been successfully applied and validated to facilitate a smoother and more efficient evaluation of reliability targets for software components in autonomous robotic wheelchair (ARW). Based on the validation results, the new CSRM has significantly enhanced the efficiency of the process for evaluating whether the defined reliability goals were being achieved. Furthermore, has facilitated a more accurate assessment of the need for further test executions and better planning of the required verification and validation session. This new approach provides valuable insights into the reliability of the developed software, particularly for software developers lacking extensive experience in identifying and applying appropriate SGRM.

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