Most safety-relevant software runs on embedded systems without displaying information to humans. However, some applications display information that expects the user to act or intervene. If this action or intervention is safety-relevant, the user must rely on the displayed information being correct. In these cases, software failures can lead to the display of incorrect information with resulting hazards. Classification of such software failures according to their effects would help to prevent such failures and thus simplify required risk analyses. We have therefore classified the failure effects of software for displaying safety-relevant information into four modes: dislocation of informational elements, mistiming, wrong formatting and content anomalies.Each of these failure effect modes can lead to hazardous events if a user has to ensure safety-relevant actions on the basis of the displayed information. The paper provides a detailed analysis of the four failure effects. Please order this paper for free as PDF by E-Mail to: dbselect@deutschebahn.com


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    Title :

    Failure analysis of software for displaying safety-relevant information


    Additional title:

    Fehleranalyse bei Software, die sicherheitsrelevante Informationen anzeigt


    Contributors:
    Hulin, B. (author) / Schulze, T. (author)

    Conference:

    Reliability, Risk and Safety - Theorie and Application: 18th European Safety and Reliability Conference (Esrel 2009) in Prague, Czech Republic, September 2009



    Publication date :

    2009-01-01


    Size :

    5 pages



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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