ABSTRACT
Sensor networks provide distributed systems that interact primarily with their environment. Information extracted is processed and retained in databases as before, but the human is removed from many parts of the processing loop. Embedded systems are not new, but sensor networks greatly extend the capabilities of these systems. Sensor network research is aiming towards developing self-configuring systems working in either unknown or inherently chaotic environments. Network communications needs to be handled in a new manner. Embedded sensors are part of large, loosely coupled networks with mobile code and data. Data supply and demand are stochastic and unpredictable. The sensor network consists of nodes integrating the abilities. Requests for information form flexible ad hoc virtual enterprises of nodes, allowing the network to adapt to and compensate for failures and congestion. Computer networks are no longer sensitive devices being coddled in air-conditioned clean rooms.
