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  4. Light Insight — Emulation of Radiation Traces for Analysis and Evaluation of Solar-Harvesting Algorithms
 
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Light Insight — Emulation of Radiation Traces for Analysis and Evaluation of Solar-Harvesting Algorithms

Publikationstyp
Conference Paper
Date Issued
2017-11-05
Sprache
English
Author(s)
Hanschke, Lars  
Renner, Bernd-Christian  
Institut
smartPORT E-EXK2  
TORE-URI
http://hdl.handle.net/11420/3949
Start Page
8
End Page
13
Citation
International Workshop on Energy Harvesting and Energy-Neutral Sensing Systems, SenSys 2017: 8-13 (2017-11-05)
Contribution to Conference
5th International Workshop on Energy Harvesting and Energy-Neutral Sensing  
Publisher DOI
10.1145/3142992.3142994
Scopus ID
2-s2.0-85041700141
The restricted energy budget of energy-aware and -predictive sensor nodes demands algorithms for adaptive duty-cycling and task scheduling. However, their comparison and development is hindered by the lack of reproducibility of environmental conditions, such as solar radiation. To debug their behavior efficiently, it is also key to replay conditions in which the algorithms react unexpectedly in the laboratory. To investigate real-world issues such as dust or pollen, we enable replaying recorded lighting conditions by building an affordable light box. Our self-developed control circuit and high-power LEDs allow us to repeatedly replay environmental illumination data through previously collected and also artificial current and voltage traces. By using the on-board ADC of the harvester, we are able to replay the conditions exactly as seen by the sensor node. We achieve replaying accuracy below the limits of the sensor node’s sensing circuitry, which enables us to directly compare the behavior of nodes running different energy-aware and -predictive algorithms.
Subjects
Cyber-physical systems
Energy harvesting
Test equipment
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