A Quantitative Safety Assessment Methodology for Safety-Critical Programmable Electronic Systems Using Fault Injection 2009-01-0760
Given the increased use of programmable embedded electronic systems (PEES) in automotive applications and their vital importance, it is not only important for engineers to design PEES in such a way to meet or exceed safety requirements but also quantify how “safe” these systems are. At the University of Virginia's Center for Safety-Critical Systems, we have developed a safety quantification methodology for embedded real time safety-related systems. The goal of the safety quantification methodology is to provide a generic but rigorous and systematic way of characterizing the dependability behavior of embedded systems that is applicable to a broad range of applications from automotive to nuclear. This paper presents a quantitative safety assessment methodology for safety-critical embedded systems using fault injection (FI). This methodology has been developed, refined and applied to a number of commercial safety-grade systems in the railway, nuclear and avionics industries. Additionally, we present several novel techniques that we developed to overcome long-standing challenges associated with fault injection based safety assessment.
Citation: Reynolds, M., Elks, C., George, N., Sekhar, M. et al., "A Quantitative Safety Assessment Methodology for Safety-Critical Programmable Electronic Systems Using Fault Injection," SAE Int. J. Passeng. Cars – Electron. Electr. Syst. 2(1):287-300, 2009, https://doi.org/10.4271/2009-01-0760. Download Citation
Michael A. Reynolds, Carl R. Elks, Nishant George, Meenakshi Sekhar, Todd DeLong, Barry W. Johnson
University of Virginia
SAE World Congress & Exhibition
Safety-Critical Systems, 2009-SP-2222, SAE International Journal of Passenger Cars - Electronic and Electrical Systems-V118-7, SAE International Journal of Passenger Cars - Electronic and Electrical Systems-V118-7EJ