On Hardware and Software Approaches to Monitor Wireless Mesh and Sensor Networks
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COST IC 0804 Meeting Madrid Working Group 2: Characterization of Energy Consumption and Energy Efficiency On Hardware and Software Approaches to Monitor Wireless Mesh and Sensor Networks Torsten Braun Research Group “Communications and Distributed Systems” Institute of Computer Science and Applied Mathematics Universität Bern joint work with Markus Anwander and Philipp Hurni [email protected]
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COST IC 0804 Meeting Madrid Working Group 2: Characterization of Energy Consumption and Energy Efficiency
Transcript of On Hardware and Software Approaches to Monitor Wireless Mesh and Sensor Networks
COST IC 0804 Meeting MadridWorking Group 2: Characterization of Energy Consumption and Energy Efficiency
On Hardware and Software Approaches to Monitor Wireless Mesh and Sensor Networks
Torsten BraunResearch Group “Communications and Distributed Systems”Institute of Computer Science and Applied MathematicsUniversität Bernjoint work with Markus Anwander and Philipp [email protected]
Torsten Braun: On Hardware and Software Approaches to Monitor Wireless Mesh and Sensor Networks
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Overview
> Hardware- and Software-Based Energy Consumption Measurements in Wireless Sensor Networks (WSNs)
> Hardware Support for Energy Consumption Measurements for Hydrology Monitoring with Wireless Mesh Networks (WMNs)
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Hardware-Based Energy Measurements
> Implementation of MaxMAC protocol on MSB430 sensor nodes > Measurement of current draw and voltage using SNMDs
(Sensor Network Management Devices) from KIT
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Current Draw by Different MSB430 Nodes
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Hardware Dependencies
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Simple 3-State-Model
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3-State-Model with State Transitions
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Estimation Errors
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Improved Sensor Hardware-Based Energy Consumption Measurements
> RIGOL DM3052 Digital Multimeter can record 50’000 current measurements per second.
> Laboratory Power Supply VOLTCRAFT VLP-1303 PRO with deviation < 2mV
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WSN Hardware Measurement Setup
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Clear Channel Assessment by TelosB Sensor Nodes
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Deviation between Multimeter and Contiki Energy Profiler
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A4-Mesh: Wireless Mesh Network for Hydrology Monitoring in the Alps
© Atlas of Switzerland 3
2
7
3
41
84
5 6
Plaine Morte Glacier
Sion
Sierre
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A4 Mesh Node Architecture
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A4-Mesh Node Power Supply
- 78Ah/12V battery- Solar charger- 90 W solar panelsMay 8, 2012
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Battery Voltage Measurements by Solar Charger
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UMTS Current Measurements I
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Node without network interfaces
UMTS interface disabled
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UMTS Current Measurements II
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UMTS interface on, but idle
UMTS interface with load
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WiFi Current Measurements I
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Node without network interfaces
WiFi interface disabled
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WiFi Current Measurements II
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WiFi interface on
WiFi AP running
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WiFi Current Measurements III
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WiFi client connected to AP, no traffic
WiFi client connected to AP, with traffic
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Conclusions
> High energy costs by wireless network interfaces (UMTS, WiFi)> Hardware for energy / battery measurements
— is available and very valuable for studying details and providing data for software-based measurements and simulation models (require accurate calibration and modelling)
— can be learned by CS students/researchers — comes sometimes with high costs and does not scale
> Better integrated (hardware/software) support for energy consumption profiling in mesh and sensor nodes desired.
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Thanks for your attention !
> Contact— [email protected] — http://cds.unibe.ch
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