A functional approach for simple wireless sensor node energy consumption modeling
Résumé
Embedded applications in the field of wireless sensor nodes are becoming more and more sensitive to energy consumption. This latter actually depends on the autonomy of network elements, but also on the applications. One must take into account the constraints of energy consumption when specifying and designing an application. Instead of considering the hardware consumption, we propose to raise the level of abstraction to focus and to study on various functions in the node. We consider a functional modeling approach in order to get a more complete estimate in term of energy consumption for each function. Input and output parameters of the functions are investigated to identify the relationships between them. Each function is well characterized by its power profiles and rules for changing its inner state. The simulation allows us to view the difference in energy consumption according to the implemented applications in the node model. The final goal of this work is to provide an efficient energy consumption optimization tool for wireless sensor nodes designers.