Smart Buildings Systems for Architects, Owners and Builders

access control system are on UPS and emergency power, which they generally
are, backup power is provided in a more centralized, less costly, more manage-
able way. With software applications residing on a network that can monitor
and manage POE devices, deployment of an IP access control system provides
more data, information, and manageability of the power than a traditional
access control.

Power Sharing

A critical system design issue is selecting the right “power source equipment”
which is either a network switch with POE capabilities or a device called a
midspan that is used with a non-POE network switch to inject power into
the communication connection. The issue is really with POE network switches

IP

Gateway

Card

Reader

Networking to Other

Building Systems

System Server

and Database

System

Monitoring and

Administration

Internet

Lock

Ethernet

Network

Door

Position

Switch

Figure 6.3 IP access control.

76 Smart Building Systems for Architects, Owners, and Builders