A key challenge to the future of energy-harvesting systems is the discontinuous power supply that is often generated. We propose a new approach, Hibernus, which enables computation to be sustained during intermittent supply. The approach has a low energy and time overhead which is achieved by reactively hibernating: saving system state only once, when power is about to be lost, and then sleeping until the supply recovers.We validate the approach experimentally on a processor with FRAM nonvolatile memory, allowing it to reactively hibernate using only energy stored in its decoupling capacitance. When compared to a recently proposed technique, the approach reduces processor time and energy overheads by 76-100\% and 49-79\% respectively.
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Titolo: | Hibernus: Sustaining Computation during Intermittent Supply for Energy-Harvesting Systems |
Autori: | Brunelli, Davide; D., Balsamo; A. S., Weddell; G. V., Merrett; B. M., Al Hashimi; L., Benini |
Autori Unitn: | |
Titolo del periodico: | IEEE EMBEDDED SYSTEMS LETTERS |
Anno di pubblicazione: | 2015 |
Numero e parte del fascicolo: | 1 |
Codice identificativo Scopus: | 2-s2.0-84924285125 |
Codice identificativo ISI: | WOS:000219585600005 |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1109/les.2014.2371494 |
Handle: | http://hdl.handle.net/11572/97929 |
Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |