Energy Efficiency in Large Scale Distributed Systems Real-World Energy Measurements of a Wireless Mesh Network A. Jamakovic, D. Dimitrova, M. Anwander, T. Macicas, T. Braun, J. Schwanbek, Th. Staub, B. Nyffenegger Universität Bern, Switzerland [email protected] , cds.unibe.ch
Real-World Energy Measurements of a Wireless Mesh Network
May 13, 2015
EE LSDS conference Vienna 2013, http://www.irit.fr/~Georges.Da-Costa/ee-lsds2013/
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Energy Efficiency in Large Scale Distributed Systems
Real-World Energy Measurements of a Wireless Mesh Network
A. Jamakovic, D. Dimitrova, M. Anwander, T. Macicas, T. Braun, J. Schwanbek, Th. Staub, B. NyffeneggerUniversität Bern, [email protected], cds.unibe.ch
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Overview
> Introduction — Environmental Monitoring Area— Wireless Mesh Network Topology at Rhone Valley— Environmental Monitoring Scenarios
> Solar-Powered Wireless Mesh Nodes— Solar-Powered Wireless Mesh Node Hardware and Software— Solar Energy Harvesting
> Energy Harvesting and Consumption Measurement Scenario> Measurement Results
— Daily/Weekly Battery and Solar Panel Voltage Measurements— Relationship of Battery and Solar Panel Voltage— Battery Load and Mesh Node Consumption— Solar Panel / Mesh Node Voltage and Battery / Mesh Node Current
> Conclusions and OutlookEE-LSDS, Vienna, April 24, 2013
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Environmental Monitoring Area
Sion
Sierre
Tseuzierstorage lake
Plaine Morte glacier
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Wireless Mesh Network Topology at Rhone Valley
2
7
3
41
84
Plaine Morte Glacier
Sion
Sierre
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Environmental Monitoring Scenarios
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Solar-Powered Wireless Mesh Nodes
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Wireless Mesh Node Hardware and Software
> IP66 steel enclosure> 1-2x Alix 3D2 system boards> 1x Alix 6F2 system board> 1-4x 801.11n mini PCI cards> 1x 801.11g mini PCI card> 1x UMTS mini PCI-Express
card> I2C twin relay> 2x2 MIMO, 25dBi,
dual polarization panel antennas for 5.8 Ghz
> ADAM Linux running Optimized Link State Routing
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Solar Energy Harvesting
> 90 Watt solar panels, voltage: 18.75 V> Panels supply lead acid battery (78 Ah) and wireless mesh node
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Energy Harvesting and Consumption Measurement Scenario
> Energy measurements by charge controller— in winter (nodes 3, 7) — In summer (nodes 7, 8)
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Voltage Measurements During a Summer Day
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Voltage Measurements During a Winter Day
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Voltage Measurements During a Summer Week
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Relationship of Battery and Solar Panel Voltage During Summer
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Relationship of Battery and Solar Panel Voltage During Winter
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Battery Load and Mesh Node Consumption During Summer
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Battery Load and Mesh Node Consumption During Winter
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Solar Panel / Mesh Node Voltage andBattery / Mesh Node Current
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Conclusions and Outlook
> Energy harvesting and consumption data in a real wireless mesh deployment
> Results show good combination of battery and solar panel.> Energy supply has been sufficient in our challenging
deployment. > Certain nodes need more energy, data are valuable for solar
panel dimensioning> Possible control of mesh node based on available energy and
weather prediction ?
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Thanks for your Attention
> More information — cds.unibe.ch and a4-mesh.unibe.ch — slideshare.net/torstenbraun— [email protected]
EE-LSDS, Vienna, April 24, 2013
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