I designed a systems overview diagram, feedback loops, a user conceptual model, and a goal tree for sensors that detect water.
The sensor system forms a feedback loop. Multiple sensors and acutators may be used.
User conceptual models describe what people need to know to successfully use an application. Four elements are key: (data) objects the user will encounter, their relationships, actions users can take on the objects, and any attributes the objects might have.
Customer goal tree
With and for Hugh Dubberly
Visual design: Marina Menéndez-Pidal