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Hibernus: Sustaining Computation during Intermittent Supply for Energy-Harvesting Systems

Balsamo, Domenico, Weddell, Alex, Merrett, Geoff V., Al-Hashimi, Bashir M., Brunelli, Davide and Benini, Luca (2014) Hibernus: Sustaining Computation during Intermittent Supply for Energy-Harvesting Systems IEEE Embedded Systems Letters

Record type: Article

Abstract

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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More information

Published date: 13 November 2014
Additional Information: The underlying data is available from http://dx.doi.org/10.5258/SOTON/389749
Organisations: Electronic & Software Systems, EEE

Identifiers

Local EPrints ID: 371787
URI: http://eprints.soton.ac.uk/id/eprint/371787
ISSN: 1943-0663
PURE UUID: 2ec9f515-57c9-4935-ae33-1326350284d9
ORCID for Alex Weddell: ORCID iD orcid.org/0000-0002-6763-5460
ORCID for Geoff V. Merrett: ORCID iD orcid.org/0000-0003-4980-3894

Catalogue record

Date deposited: 14 Nov 2014 11:35
Last modified: 17 Jul 2017 21:46

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Contributors

Author: Domenico Balsamo
Author: Alex Weddell ORCID iD
Author: Geoff V. Merrett ORCID iD
Author: Davide Brunelli
Author: Luca Benini

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