wireless sensor networks

A wireless sensor network (WSN) is made of numerous small independent sensor nodes, which consist of a battery, radio, sensors, and a minimal amount of onboard computing power and has wireless communication capabilities among sensor nodes. Application of sensor nodes is quite common in the field of Agricultural monitoring (for climate sensitive crops), structural monitoring etc. However object detection, classification and tracking using WSN is more challenging and involves sensing and recognizing an object that enters the network area by collecting signals (acoustic, magnetic etc.) and processing them not only in real time but also involving restricted power consumption constraints. The real time applications include vehicle tracking, inventory tracking inside factories, military tracking and identification of hostile intrusion vehicles, and automatic tollgate collection based on two wheelers or four wheelers.