Networked Embedded Systems:
1.6 Concluding Remarks
Thischapter has presented an overview of trends for networking of embedded systems, their design, and selected application domain-specific network technologies. The networked embedded systems appear in a variety of application domains to mention automotive, train, aircraft, office building, and industrial automation. With the exception of building automation, the systems discussed in this chapter tend to be confined to a relatively small area covered and limited number of nodes, as in case of an industrial process, an automobile, or a truck. In the building automation controls, the networked embedded systems may take on truly large proportions in terms of area covered and number of nodes.
For instance, in a LonTalk network, the total number of addressable nodes in a domain can reach
; up to domains can be addressed.
Thewireless sensor/actuator networks, as well as wireless–wireline hybrid networks, have started evolving from the concept to actual implementations, and are poised to have a major impact on industrial, home, and building automation—at least in these application domains, for a start.
Thenetworked embedded systems pose a multitude of challenges in their design, particularly for safety-critical applications, deployment, and maintenance. The majority of the development envi-ronments and tools for specific networking technologies do not have firm foundations in computer science, software engineering models, and practices making the development process labor-intensive, error-prone, and expensive.
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