Protective equipment compliance and restricted zones on the work floor

The three things the node checks at the entry point to the work area.
ActiveHelmets and vests are checked at the entry point to the work area.
HazardA flag whenever someone enters an area that is currently closed.
AlertAn event recap for the safety meeting, with no worker identities.

Helmets and vests are checked at the entry point; any zone currently closed is flagged too.

Helmets and vests are checked at the entry point; any zone currently closed is flagged too.

Helmets and vests are checked at the entry point; any zone currently closed is flagged too.
Helmets and vests are checked at the entry point; any zone currently closed is flagged too.

Helmets and vests are checked at the entry point; any zone currently closed is flagged too.
Cameras are installed at the entrance to the work area and at the boundary of any zone currently closed.
The node checks helmet and vest use at the entry point, and flags anyone entering a closed zone.
Events are sent to the safety officer as a record with their timestamps. The system assists supervision; it does not replace the person responsible for it.
Entry points, closed zones, and the cameras already installed differ at every site. The system assists supervision; it does not replace the safety officer responsible for it.