S.Karthikeyan¹ and S.Jayashri², ¹Sathyabma University, India and ²Adhiparasakthi engineering college, India

Wireless sensor network (WSN) is the collection of many micro-sensor nodes, connecting each other by awireless medium. WSN exhibits different approaches to provide reliable sensing of the environment, detecting and reporting events. In this paper, we have proposed an algorithm for hierarchy based protocols of wireless sensor networks, which consist of two groups of sensor nodes in a single cluster node. Each cluster consists of a three cluster head. The event driven data sensing mechanism is used in this paper and this sensed data is transmitted to the master section head. Hence efficient way of data transmission is possible with larger group of nodes. In this approach, using hierarchy based protocols; the lifetime of the sensor network is increased.

Sensor Nodes, lifetime, event driven, master section head.