Vol-2 Issue-5 2016 IJARIIE-ISSN(O)-2395-4396 3064 www.ijariie.com 1 Switching-Differential Evolution(S-DE) for Cluster Head Election in Wireless Sensor Network Astha Gaur 1 , Tarun Kumar 2 1 M. Tech Scholar, Dept. of C.S.E, GIMT Kanipla, Kurukshetra University Kurukshetra, Kurukshetra, India 2 Assistant Professor, Dept. of C.S.E, GIMT Kanipla, Kurukshetra University Kurukshetra, Kurukshetra, India Abstract— Wireless sensor network consists of number of sensor nodes that capable of sensing data and transferring those data to the base station (BS).The major concerns in Wireless Sensor Networks (WSN) are energy efficiency as they use small sized batteries, which can neither be replaced nor be recharged. So it becomes the necessity to save energy and also increase the lifetime of wireless sensor network. In this paper, a switching differential evaluation (S-DE) algorithm for clustering and election of cluster heads in wireless sensor network is proposed. This paper aimed to improving the network lifetime and to reduce the complexity of network. Keywords —Wireless Sensor network, Switching Differential Evolution (S-DE), Clustering, Network lifetime. I. INTRODUCTION The Wireless Sensor Network is a collection of hundreds or thousands of tiny nodes and these sensor nodes have limited battery power. [6] In Wireless Sensor Networks, sensor nodes are able to interact with their environment through sensing or controlling the physical parameters. These Sensor nodes collect data from their environment and send it to the Sink or Base Station in order to fulfill their tasks as shown in fig 1. The energy requirement is one of the major constraints while working with wireless sensor networks. The sensor nodes present in the network are very large in number .The major part of energy in the network is consumed in the form of communication between the nodes which includes the transfer of messages between the nodes present in the network. Wireless Sensor Network (WSN) has wide area of different applications like in Monitoring Environment, health, industry, military and in Commercial Use etc. So it becomes the necessity to save energy and also increase the lifetime of wireless sensor network. [2]