embedded prototypes, and finally the embedded product (hence forth called the HMI ECU). However, between these stages, information is often passed on informally, as natural language documents or semi-structured requirement specifications. As a consequence, the corresponding test processes are often ill-defined, refer only loosely to the original requirement specifications, and must often be designed from scratch. Because of the discontinuities described in the previous paragraph, miscommunication and delays along the development chain are often unavoidable. This situation is amplified by the process highly iterative nature: the design and implementation of the HMI usually emerges incrementally during several iterations of the early development phases. Each new iteration is informed by the feedback of the previous iteration, mainly concerning usability, feasibility and projected cost. A diverse set of stake-holders participate in this development process, all of which have their own perspectives, use their own approaches, and rely on their own representational frameworks and tools. Our strategy to overcome the existing discontinuities relies on a model-based approach: our goal is to use a formal HMI specification that serves as a common basis for all phases of the development process, including automated testing. Currently, our automated tests compare the HMI embedded control unit (ECU) against a prototype that has been derived partially from a formal specification. BMW is working toward being able to derive the prototype almost completely automatically from the specification and test the HMI ECU automatically against the formal specification.
Model-based test automation for automotive human machine interfaces
Modell basierte Prüfautomatisierung von fahrzeugspezifischen Mensch-Maschine-Schnittstellen
2005
11 Seiten, 6 Bilder, 4 Quellen
Aufsatz (Konferenz)
Englisch
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