This paper presents Tucan, an approach to automatically create a virtual prototype (VP) and to support the analysis of VP testing results to validate time constraint requirements in real-time embedded systems. Virtual prototyping is a fast and reliable solution to facilitate system testing and time constraint validation. However, analyzing simulation results involves the visual inspection of timing diagrams, which is a time-consuming and complicated task. The complexity of the task grows depending on the number of signals present in a simulation; furthermore, their analysis is prone to errors due to the difficulty in identifying dependencies between the signals created by the system architecture. Our main contributions are: (1) the automatic generation of a high quality VP from a high level specification; (2) the specification of duration constraints, i.e., execution time of components that must be kept within an average time; and (3) duration requirement analysis based on predicted versus obtained behavior. We are able to predict system behavior by building a VP with a behavior model based on Time Petri Nets. We present the advantages of our method through a case study that illustrates the strength of Tucan in helping determine what variations at a specific component level allow the fulfillment of a set of time constraints.
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Hoyos-Rodríguez, H., Jiménez, F., Casallas, R. et al. Tucan. Des Autom Embed Syst 17, 129–165 (2013). https://doi.org/10.1007/s10617-013-9122-5
- Real-time embedded systems
- Design validation
- Time constraint requirements
- Time Petri nets