Archives For HMI

A requirements checklist that can be used to evaluate the adequacy of HMI designs in safety critical applications. Based on the work of Nancy Leveson and Matthew Jaffe.

Why We Automate Failure
A recent post on the interface issues surrounding the use of side-stick controllers in current generation passenger aircraft led me to think more generally about the the current pre-eminence of software driven visual displays and why we persist in their use even though there may be a mismatch between what they can provide and what the operator needs.

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In a previous post I discussed that in HOT systems the operator will inherently be asked to intervene in situations that are unplanned for by the designer. As such situations are inherently not ‘handled’ by the system this has strong implications for the design of the human machine interface.

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