is attempting or has been granted access to a facility. Or, if a guard is stationed at
the entrance to a building, the guard may use a personal computer that automat-
ically displays information and an identification picture when a person enters the
building using an access card, allowing the guard to compare and confirm that
the person using the card is indeed the authorized card holder.
Control Panels
Control panels are usually enclosed printed circuit boards with connections to
all peripheral devices in their area. These peripheral devices may include door
System
Controller
Networking to Other
Smart Building Systems
System Server
and Database
System
Monitoring and
Administration
Internet
Doors
Ethernet
Network
Doors
Doors
System
Controller
System
Controller
Figure 6.2 Access control system.
72 Smart Building Systems for Architects, Owners, and Builders