Institute of Electrical & Electronic Engineers
A Wireless Sensor Network (WSN) consists of spatially distributed small nodes to collecting, measuring, and aggregating parameters beyond the authors' current abilities and to cooperatively pass their data through the network to a main location. The more modern networks are bi-directional, enabling also to control the activity of the sensors. The development of wireless sensor networks was motivated by military applications such as battlefield surveillance; today such networks are used in many industrial and civilian application areas. WSNs are self-organizing networks of small embedded devices called motes. These are deployed in the environment being monitored, either placed individually or scattered with high enough density relative to their sensing and communication ranges to ensure good connectivity and sensing coverage.