wilamowski-b-m-irwin-j-d-industrial-communication-systems-2011

11-2 Industrial Communication Systems
efficient design, multimedia coverage, etc., which are then discussed in depth to give the reader complete
understanding of these needs since any WMSN application would need to keep these challenges in mind
when developing new motes or deploying WMSNs. This concludes the chapter. Chapter 12 will focus on
WMSN communication protocol stack, which forms the key basis of the wireless network communication.
11.2 Wireless Sensor Network
Wireless sensor networks (WSN) as shown in Figure 11.1 have attracted wide attention of research community
during the past few years in applications ranging from environmental monitoring, heath care,
to mission-critical industrial and military applications. This growing interest can be largely attributed
to new applications enabled by large-scale networks of small devices capable of harvesting information
from the physical environment [AMC07], performing simple processing on the extracted data and
transmitting it to remote locations.
WSN is composed of intelligent embedded nodes capable of communicating over wireless link with
base station and other nodes. WSN node as shown in Figure 11.2 comprises low-power sensing devices,
Server station
Node
Wireless link
Sink node
Sensor
Sensor node
FIGURE 11.1
WSN architecture.
Sensor unit
(CO 2 , light,
temperature, etc.)
Central processing unit
(FPGA, microcontroller,
microprocessor, etc.)
WSN node
Communication unit
(RF transceiver,
bluetooth/Zigbee,
RS232 standard, etc.)
Power unit
(dc–dc module, battery,
filtering, etc.)
FIGURE 11.2
WSN node.
© 2011 by Taylor and Francis Group, LLC