International Journal of Scientific and Research Publication (IJSRP)
In the past years; Wireless Sensor Networks (WSNs) have gained increasing attention from both the research community and actual users. Wireless Sensor Networks (WSNs) are used in variety of fields which includes environmental, healthcare, military, biological and other commercial applications. The critical aspects to face concern "How to reduce the energy consumption of nodes" and sensor nodes are generally battery-powered devices so that the network lifetime can be extended to reasonable times. However, they conducted that first break down the energy consumption for the components of a typical sensor node i.e. discussion of the main directions to energy conservation in WSNs.