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Bill Giovino
22-Sep-2000
Figure 3 – Facilities Management
The above example shows a network of eZ80s in a facilities management
application. Facilities management involves monitoring and controlling all of the
complexities of a modern office building – lights, fire alarm, security, elevators,
temperature monitoring and control.
It is unrealistic to expect all of these systems in a large facility to be managed
manually by flipping switches or turning dials on the wall; today, modern office
buildings and skyscrapers are controlled by vast networks that run through the
building. In the past, this network has been UART based or more recently via
controller area network (CAN), but the sophistication has reached a level where a
high speed network with more sophistication is required. Ethernet is used in many
new office buildings, and TCP/IP is the underlying protocol. The universal
connectivity offered by the standards-based TCP/IP and Ethernet allows nodes from
different vendors to interact with each other – the thermostats can communicate
directly with the central heating unit, and can report the adjustments in temperature to
any computer with a browser that is hooked up to the network. Security control points
can interact with lighting, alarms, and door switches. Lights can be sequenced from a
browser. Special equipment and training is minimal, as most operators today know
how to operate a web browser.
Lighting
Control
Security
Alarm
Access
Monitoring
Fire
Alarm
ENTER...
Ethernet
Ethernet
Temperature
Monitoring & Control
Any Computer with a Browser
§
PC Compatible
§
PDA
§
SUN workstation
§
Linux Box
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