Abstract: Regarding energy consumption for different degrees of nodes in a wireless sensor network, it proposed the energy cluster head selection mechanism, based on the cost of energy. In this mechanism, the first common node was seen as the cluster head node. Nodes, necessary node energy consumption, and the current energy surplus value were computed. With the proposed concepts and formulas, the above energyrelated value was converted into the value of energy loss speed of the selected clusters at measurable sensor nodes. Simulation results show that the algorithm has a better cluster head selection, and it can effectively extend the network life cycle.

Key words: wireless sensor networks, clusters, energy loss, energy ratio