A unified approach for online and offline estimation of sensor platform energy consumption

To minimize the power consumption of energy-constrained systems, energy-models are used to make design decisions and to optimize program code. Usually, energy models for design- or compile-time decisions, which we call offline models, can become very complex. In this article we describe a method to create offline models, which can be simplified in a way that allows the models to be used even at run-time. This allows dynamic resource management, by postponing decisions about resource utilization to the running system. The simplified models remain exact for the pre-defined usage and software scenarios. This makes it possible to create components that are self-describing in their resource consumption for different environmental situations, while the complex offline models stay reusable.