Recent advances in wireless communications and electronics have enabled the development of low-power and energy consumption, multifunctional sensor nodes that are small in size and communicate in short distances. These tiny sensor nodes, which consist of sensing and data processing, leverage the idea of sensor networks. Sensor size represents a significant limitation mainly in terms of energy autonomy and therefore of life period, for the batteries have to be too tiny. This is the reason why intensive research is being conducted nowadays on how to control sensor energy consumption within a network, taking communications into account as a priority. For this purpose we have proposed a method to calculate energy consumption within the wireless sensor networks according to the number of information packets sent, the number of nodes and, furthermore, we have succeeded in reducing energy consumption within the sensor networks.

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