Use Case Diagram for the Elevator System

Let’s build the elevator system’s use case diagram and understand the relationship between its main actors and functions. First, we’ll define the different elements of our system, followed by the complete use case diagram.

System

The elevator control system includes the physical elevator cars, floor and in-car panels, and the central controller, which manages requests and car dispatch.

Actors

Next, we will define our elevator system’s main actors.

Primary actors

• Passenger: A passenger can do the following.