Residual Battery Energy Models in WSN:A Survey

The sensor Nodes in a Wireless Sensor Networks (WSN) possess limited energy resources due to a fixed battery life that is usually non chargeable. This aspect of sensor nodes necessitates the development of an approach which models the residual battery life in a sensor node battery. A number of residual battery models are studied in this survey. These battery models focus to conserve the energy or capacity of the sensor batteries thus maximizing the network lifetime. The battery modeling may be linear or non- linear. The various battery models are then summarized and compared with the help of a table depicting their advantages and disadvantages.