The aim of the work is to manage the energy in wireless sensor network nodes using various schemes. The following schemes have been applied for energy management in wireless sensor networks: 1. Energy efficient node deployment using multi robot scheme 2. Aggregation routing scheme 3. Increasing ray based scheme for energy efficient searching 4. Energy efficient voting scheme 5. Energy efficient polling scheme Wireless sensorDr. S. ANANDAMURUGAN obtained his Bachelor s degree in Electrical and Electronics Engineering from Maharaja Engineering College - Avinashi and Masters Degree in Computer Science and Engineering from Arulmigu Kalasalingam College of Engineering Krishnan Koil . He completed his Ph.D in Wireless Sensor Networks under Anna University, Chennai.