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Photovoltaic cells for micro-scale wireless sensor nodes: measurement and modeling to assist system design

Photovoltaic cells for micro-scale wireless sensor nodes: measurement and modeling to assist system design
Photovoltaic cells for micro-scale wireless sensor nodes: measurement and modeling to assist system design
Energy harvesting enables perpetual operation of wireless sensor nodes by scavenging energy from the environment. Light energy harvesting using photovoltaic (PV) cells is preferred as they offer the highest volumetric power output allowing nodes to be as small as possible. However, their power output can be spatially and temporally-variable. This work investigates the performance of cm^2-scale PV cells, and reports on a new measurement and characterization platform. Results show that micro PV cells perform differently from large panels: power is not simply a function of area and light levels, and manufacturing variability can be a major issue. The method presented enables the rational design of micro-scale systems, including their maximum power point tracking circuits, and the evaluation of techniques for energy-neutrality (such as workload throttling) at design-time.
978-1-4503-3837-0/15/11
Savanth, Anand
57b60ac8-bbb6-4517-9d5e-668d82500190
Weddell, Alex
3d8c4d63-19b1-4072-a779-84d487fd6f03
Myers, James
b541d1fd-a24a-4771-91b3-84e1ac8c7fe5
Flynn, David
9cb44648-488b-4f22-b72b-7e5117cd919c
Al-Hashimi, Bashir
0b29c671-a6d2-459c-af68-c4614dce3b5d
Savanth, Anand, Weddell, Alex, Myers, James, Flynn, David and Al-Hashimi, Bashir (2015) Photovoltaic cells for micro-scale wireless sensor nodes: measurement and modeling to assist system design At 3rd International Workshop on Energy Neutral Sensing Systems (ENSsys 2015), Korea, Republic of. 6 pp.

Savanth, Anand, Weddell, Alex, Myers, James, Flynn, David and Al-Hashimi, Bashir (2015) Photovoltaic cells for micro-scale wireless sensor nodes: measurement and modeling to assist system design At 3rd International Workshop on Energy Neutral Sensing Systems (ENSsys 2015), Korea, Republic of. 6 pp.

Record type: Conference or Workshop Item (Paper)

Abstract

Energy harvesting enables perpetual operation of wireless sensor nodes by scavenging energy from the environment. Light energy harvesting using photovoltaic (PV) cells is preferred as they offer the highest volumetric power output allowing nodes to be as small as possible. However, their power output can be spatially and temporally-variable. This work investigates the performance of cm^2-scale PV cells, and reports on a new measurement and characterization platform. Results show that micro PV cells perform differently from large panels: power is not simply a function of area and light levels, and manufacturing variability can be a major issue. The method presented enables the rational design of micro-scale systems, including their maximum power point tracking circuits, and the evaluation of techniques for energy-neutrality (such as workload throttling) at design-time.

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More information

Accepted/In Press date: 2 September 2015
Venue - Dates: 3rd International Workshop on Energy Neutral Sensing Systems (ENSsys 2015), Korea, Republic of, 2015-09-02
Organisations: Electronic & Software Systems, EEE

Identifiers

Local EPrints ID: 381613
URI: http://eprints.soton.ac.uk/id/eprint/381613
ISBN: 978-1-4503-3837-0/15/11
PURE UUID: 291f5144-9b9e-4ba7-9160-931986e2cfb8
ORCID for Alex Weddell: ORCID iD orcid.org/0000-0002-6763-5460

Catalogue record

Date deposited: 29 Sep 2015 13:21
Last modified: 08 Nov 2017 00:20

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Contributors

Author: Anand Savanth
Author: Alex Weddell ORCID iD
Author: James Myers
Author: David Flynn

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