Automation Using Data Aggregation In Wireless Sensor Network

Abstract

Wireless Sensor Network (WSN) is a variant of Mobile Ad-hoc Network which has strict resource constraints. In WSN sensor nodes are scattered in the sensor field. These nodes sense parameters like humidity, pressure, sound etc and report it to the sink node. These direct form of data transmission takes significant amount of energy also nodes may sense correlated data and may report redundant data back to the sink. The project aims to identify efficient data aggregation protocol and further enhance it for achieving better network life time also to use this aggregation protocol for automation of an application like automation of water sprinklers(where based on the humidity present into the soil water will be supplied automatically). Hardware implementation of data aggregation with very small network of 3 nodes is also done using arduino microcontroller. In these small experimental setup nodes can sense amount of humidity present into the soil, generates results accordingly and report it to the aggregator node. Aggregator node is connected to the laptop via USB which is acting as sink node where analysis of result is done. To use this approach in real time application like automation of garden water sprinklers, model for automation is also presented.