Wireless Sensor Networks Issues and Applications

Wireless Sensor Networks have come to the forefront of the scientific community recently. Current WSNs typically communicate directly with a centralized controller or satellite. On the other hand, a smart WSN consists of a number o f sensors spread across a geographical area; each sensor has wireless communication capability and sufficient intelligence for signal processing and networking of the data. The structures of WSNs are tightly application-dependent, and many services are also dependent on application semantics. Thus, there is no single typical WSN application, and dependency on applications is higher than in traditional distributed applications. The application/middleware layer must provide functions that create effective new capabilities for efficient extraction, manipulation, transport, and representation of information derived from sensor data. This paper provides a survey of Wireless Sensor Networks Issues and Applications, where the use of such sensor networks has been proposed.