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Energy-aware HW/SW co-modeling of batteryless wireless sensor nodes

Energy-aware HW/SW co-modeling of batteryless wireless sensor nodes
Energy-aware HW/SW co-modeling of batteryless wireless sensor nodes
Energy harvesting wireless sensor nodes are sensitive to spatial and temporal fluctuations in energy availability. This issue is especially prevalent in batteryless systems, where devices are directly connected to power sources with little or no buffering. The strong coupling of energy supply and demand introduces a new dimension to the problem of designing robust networked sensing systems. We propose a modeling framework for this class of batteryless systems with an emphasis on the interactions between energy and function. The tool models energy harvesters, power management circuitry, energy storage, microcontrollers, sensors, radio modules, environmental models, and is fully extensible. The microcontroller model is based on cycle-accurate instruction set simulators from Fused, with various peripheral extensions to enable board-level functionality, such as SPI, DMA, hardware multiplier etc. The tool enables virtual prototyping of self-powered wireless sensor nodes, but is especially useful for studying intermittent operation and developing application specific software, hardware, or combined solutions. The simulator is capable of executing real workloads under realistic conditions and this is demonstrated through a case study where the same compiled binary is executed on a virtual prototype and its corresponding physical wireless sensor system to yield matching digital traces and current profiles
57-63
ACM
Wong, Samuel Chang Bing
0eb232d1-161b-4f6d-bf2b-514704c29e69
Sliper, Sivert T.
73303db3-fb3d-4434-973b-3def05837e7f
Wang, William
ff81a455-8a66-49db-82f2-849bc6dc2c51
Weddell, Alexander
3d8c4d63-19b1-4072-a779-84d487fd6f03
Gauthier, Stephanie
4e7702f7-e1a9-4732-8430-fabbed0f56ed
Merrett, Geoff
89b3a696-41de-44c3-89aa-b0aa29f54020
Wong, Samuel Chang Bing
0eb232d1-161b-4f6d-bf2b-514704c29e69
Sliper, Sivert T.
73303db3-fb3d-4434-973b-3def05837e7f
Wang, William
ff81a455-8a66-49db-82f2-849bc6dc2c51
Weddell, Alexander
3d8c4d63-19b1-4072-a779-84d487fd6f03
Gauthier, Stephanie
4e7702f7-e1a9-4732-8430-fabbed0f56ed
Merrett, Geoff
89b3a696-41de-44c3-89aa-b0aa29f54020

Wong, Samuel Chang Bing, Sliper, Sivert T., Wang, William, Weddell, Alexander, Gauthier, Stephanie and Merrett, Geoff (2020) Energy-aware HW/SW co-modeling of batteryless wireless sensor nodes. In ENSsys '20: Proceedings of the 8th International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems. ACM. pp. 57-63 . (doi:10.1145/3417308.3430272).

Record type: Conference or Workshop Item (Paper)

Abstract

Energy harvesting wireless sensor nodes are sensitive to spatial and temporal fluctuations in energy availability. This issue is especially prevalent in batteryless systems, where devices are directly connected to power sources with little or no buffering. The strong coupling of energy supply and demand introduces a new dimension to the problem of designing robust networked sensing systems. We propose a modeling framework for this class of batteryless systems with an emphasis on the interactions between energy and function. The tool models energy harvesters, power management circuitry, energy storage, microcontrollers, sensors, radio modules, environmental models, and is fully extensible. The microcontroller model is based on cycle-accurate instruction set simulators from Fused, with various peripheral extensions to enable board-level functionality, such as SPI, DMA, hardware multiplier etc. The tool enables virtual prototyping of self-powered wireless sensor nodes, but is especially useful for studying intermittent operation and developing application specific software, hardware, or combined solutions. The simulator is capable of executing real workloads under realistic conditions and this is demonstrated through a case study where the same compiled binary is executed on a virtual prototype and its corresponding physical wireless sensor system to yield matching digital traces and current profiles

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Accepted/In Press date: 19 October 2020
Published date: November 2020

Identifiers

Local EPrints ID: 444969
URI: http://eprints.soton.ac.uk/id/eprint/444969
PURE UUID: ad7dbcfc-d29d-4f6a-888f-7a59505c7580
ORCID for Sivert T. Sliper: ORCID iD orcid.org/0000-0002-8991-3783
ORCID for Alexander Weddell: ORCID iD orcid.org/0000-0002-6763-5460
ORCID for Stephanie Gauthier: ORCID iD orcid.org/0000-0002-1720-1736
ORCID for Geoff Merrett: ORCID iD orcid.org/0000-0003-4980-3894

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Date deposited: 13 Nov 2020 17:31
Last modified: 13 Nov 2020 17:31

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Contributors

Author: Samuel Chang Bing Wong
Author: Sivert T. Sliper ORCID iD
Author: William Wang
Author: Alexander Weddell ORCID iD
Author: Geoff Merrett ORCID iD

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