Image Processing Reference
In-Depth Information
1
Networked Embedded Systems:
An Overview
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NetworkingofEmbeddedSystems ...................
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AutomotiveNetworkedEmbeddedSystems..........
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Networks Embedded Systems in Industrial
Automation ..........................................
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WirelessSensorNetworks............................
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Networked Embedded Systems in Building
Automation ..........................................
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ConcludingRemarks.................................
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Richard Zurawski
ISA Group
References .................................................
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1.1 Networking of Embedded Systems
The last two decades have witnessed a remarkable evolution of embedded systems from being assem-
bled from discrete components on printed circuit boards, although, they still are, to systems being
assembled from IP components “dropped” on to silicon of the system on a chip. Systems on a
chip offer a potential for embedding complex functionalities, and to meet demanding performance
requirements of applications such as DSP, network, and multimedia processors. Another phase in this
evolution, already in progress, is the emergence of distributed embedded systems; frequently termed
as networked embedded systems, where the word “networked” signifies the importance of the net-
working infrastructure and communication protocol. A networked embedded system is a collection
of spatially and functionally distributed embedded nodes interconnected by means of wireline and/or
wireless communication infrastructure and protocols, interacting with the environment (via a sen-
sor/actuator elements) and each other, and, possibly, a master node performing some control and
coordination functions, to coordinate computing and communication to achieve certain goal(s). he
networked embedded systems appear in a variety of application domains such as automotive, train,
aircraft, office building, and industrial areas—primarily for monitoring and control, environment
monitoring, and, in future, control, as well.
There have been various reasons for the emergence of networked embedded systems, influenced
largely by their application domains. he benefits of using distributed systems and an evolutionary
need to replace point-to-point wiring connections in these systems by a single bus are some of the
most important ones.
The advances in design of embedded systems, tools availability, and falling fabrication costs of
semiconductor devices and systems have allowed for infusion of intelligence into the field devices
