The key element in this model-based approach is the separation of diagnostic software and test software. Isolation of diagnostic software from test software provides major opportunities not now available from the conventional diagnostics development approaches. The most important benefit is ability to design-in embedded and develop off-line diagnostics concurrent with design evolution. This will save up to 30% of existing test development costs and provide users with effective core diagnostics software applicable to any diverse test platform.
For existing systems, enhancement of diagnostic capability is achieved without hardware change. The Diagostician software plays a major role in the concurrent design of diagnostics for new systems and the enhancement of diagnostics for legacy systems. The following interactions show this:
Model-based reasoning enables a concurrent engineering approach to all aspects of integrated diagnostics / testability / prognostics development. It also facilitates a program view of all diagnostic elements where these elements can be viewed as a highly distributed subsystem - a diagnostic subsystem. Reasoning software is also ideally suited for overlay on existing products to improve diagnostics.
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