An integrated HW and SW fault injection environment for real-time systems

This paper describes a system suited to support the Fault Injection process for microprocessor-based embedded systems. The system exploits a low-cost hardware board to monitor the processor status, to activate the fault injection procedure, and to gather information about the fault-free system behavior required to implement a set of fault collapsing rules. The overall environment allows at-speed fault injection experiments with negligible intrusiveness in the target system, and can therefore be used to efficiently evaluate real-time systems dependability.