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

Lookup NU author(s): Dr Domenico Balsamo

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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.

Publication metadata

Author(s): Balsamo D, Weddell AS, Merrett GV, Al-Hashimi BM, Brunelli D, Benini L

Publication type: Article

Publication status: Published

Journal: IEEE Embedded Systems Letters

Year: 2015

Volume: 7

Issue: 1

Pages: 15-18

Print publication date: 01/03/2015

Online publication date: 20/11/2014

Acceptance date: 13/11/2014

ISSN (print): 1943-0663

ISSN (electronic): 1943-0671

Publisher: IEEE

URL: https://doi.org/10.1109/LES.2014.2371494

DOI: 10.1109/LES.2014.2371494

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