Performance aware tasking for environmentally powered sensor networks

The use of environmental energy is now emerging as a feasible energy source for embedded and wireless computing systems such as sensor networks where manual recharging or replacement of batteries is not practical. However, energy supply from environmental sources is highly variable with time. Further, for a distributed system, the energy available at its various locations will be different. These variations strongly influence the way in which environmental energy is used. We present a harvesting theory for determining performance in such systems. First we present a model for characterizing environmental sources. Second, we state and prove two harvesting theorems that help determine the sustainable performance level from a particular source. This theory leads to practical techniques for scheduling processes in energy harvesting systems. Third, we present our implementation of a real embedded system that runs on solar energy and uses our harvesting techniques. The system adjusts its pe...

• Type: Conference
• Year: 2004
• Where: SIGMETRICS
• Authors: Aman Kansal, Dunny Potter, Mani B. Srivastava
• Keywords: Distributed System, Energy Harvesting, Environmental Energy, SIGMETRICS 2004