A Method for Extending Lifetime in Wireless Sensor Networks with Using Triple Cluster Head

Cluster is one of the lifetime increase of wsn. The number and the size of cluster and cluster head selection is the main factor. Increase of cluster size causes the increase of distance and the early discharge. Decrease of cluster size causes the increase of sending of overhead controlling information. Inappropriate selection of the cluster increases the distance to the member of cluster and other cluster heads. In this article, we follow the increase of lifetime in angle clustering using Three cluster heads in wsn. Cluster head selection in this methods is related to remained energy, the average distance to the members and distance between current cluster head and previous one. This way, the new cluster head and the previous one does change, if the continuous working time becomes lower than optimum value. The continuous working time of cluster head is related to the optimum one hop distance and angle clustering. Simulation result reveals that above methods have caused the lifetime increasing of the wsn..