Quantitative analysis methodology in safety-critical microprocessor applications

Camargo, João Batista; Canzian, Edmur; Almeida, Jorge Rady de; Paz, Sérgio Miranda; Basseto, Bruno Abrantes

doi:10.1016/s0951-8320(01)00061-8

Cited by 9 publications

(3 citation statements)

References 9 publications

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“…In the majority of cases this may be achieved through circuit reconfiguration. In many safety critical applications redundancy is used, in the form of both hardware and software, to ensure that the system will not fail [3,4]. The subsystem would consist of duplicate devices that would run simultaneously; if one device becomes faulty the other device's output would be used instead.…”

Section: Existing Strategies To Achieve Fault Avoidancementioning

confidence: 99%

The Integration of On-Line Monitoring and Reconfiguration Functions using IEEE1149.4 Into a Safety Critical Automotive Electronic Control Unit

Jeffrey

Cutajar

Prosser

et al.

Design, Automation and Test in Europe

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This paper presents an innovative application of IEEE 1149.4 and the Integrated Diagnostic Reconfiguration (IDR) as tools for the implementation of an embedded test solution for an Automotive Electronic Control Unit implemented as a fully integrated mixed signal system. The paper described how the test architecture can be used for fault avoidance with results from a hardware prototype presented. The paper concludes that fault avoidance can be integrated into mixed signal electronic systems to handle key failure modes.

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Section: Existing Strategies To Achieve Fault Avoidancementioning

confidence: 99%

The Integration of On-Line Monitoring and Reconfiguration Functions using IEEE1149.4 Into a Safety Critical Automotive Electronic Control Unit

Jeffrey

Cutajar

Prosser

et al.

Design, Automation and Test in Europe

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show abstract

“…"O uso de tecnologia computacional em sistemas de segurança é um problema complexo" (CAMARGO JR. et al, 2001). A maior parte dos sistemas críticos atuais está sendo desenvolvido com padrões proprietários, estabelecidos pelos consumidores ou pelos produtores de software.…”

Section: Técnicas Atuais Para a Avaliação Do Nível De Segurançaunclassified

“…Embora nem todas as normas avaliadas tenham sido citadas, os conceitos apresentados nesta pesquisa se referem à experiência do autor com as normas correntemente aplicadas pelo Metrô de São Paulo (vide Tabela 2), que faz uso da metodologia descrita em CAMARGO JR. et al (2001).…”

Section: Normasunclassified

Avaliação comparativa do impacto do emprego de técnicas de programação defensiva na segurança de sistemas críticos.

Secall¹

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Aiming the reduction of commercial systems` time to the market, standardized hardware, as microcontrollers and embedded microprocessors, has been broadly employed for critical applications, transferring to the software issues that once exclusively relied on the hardware design. Defensive programming techniques are preventive engines against hardware and software faults. In order to verify the safety of critical application systems, fault injection techniques were developed, allowing for the testing of fault tolerant techniques under conditions quite close to actual operational environments. The introduction of defensive programming techniques increases the safety of critical application systems. There are no references, on a large research base, on quantitative evaluations of defensive programming techniques. This thesis describes an experimental work towards a relative quantitative evaluation, organized in a few stages. First, some defensive programming techniques are shown, characterized and selected as the evaluation target. Following, fault injection techniques are described and one of them is selected as the agent of the experimental work. From this point on, the defensive programming techniques are verified under the fault injection technique chosen. The result is a relative quantitative evaluation on the efficiency of some defensive programming techniques on the unsafe fault tolerance capacity of critical application systems. Finally, indications for further work are presented. The railway environment, where the author works, was employed as a case study. However, the reasoning and the conclusions of this thesis are applicable to any critical mission system.

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The Integration of On-Line Monitoring and Reconfiguration Functions into a Safety Critical Automotive Electronic Control Unit

et al. 2005

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Quantitative analysis methodology in safety-critical microprocessor applications

Cited by 9 publications

References 9 publications

The Integration of On-Line Monitoring and Reconfiguration Functions using IEEE1149.4 Into a Safety Critical Automotive Electronic Control Unit

The Integration of On-Line Monitoring and Reconfiguration Functions using IEEE1149.4 Into a Safety Critical Automotive Electronic Control Unit

Avaliação comparativa do impacto do emprego de técnicas de programação defensiva na segurança de sistemas críticos.

The Integration of On-Line Monitoring and Reconfiguration Functions into a Safety Critical Automotive Electronic Control Unit

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