Maximum Power Point Tracking (MPPT) for on-body Context Systems

In this article we present the use of MPPT (maximum- power-point-tracking) for miniaturized on-body activity recognition systems. We evaluate different solar cells and apply MPPT to study the suitability for on-line activity systems. With a wrist worn solar cell, MPPT allows us to track power levels...

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Bibliographic Details
Published in2006 10th IEEE International Symposium on Wearable Computers pp. 135 - 136
Main Authors Bharatula, N.B., Ward, J.A., Lukowicz, P., Truster, G.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2006
Subjects
Batteries
Capacitors
Photovoltaic cells
Photovoltaic systems
Power generation
Power supplies
Sensor systems
Switches
Voltage
Wearable sensors
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Summary:In this article we present the use of MPPT (maximum- power-point-tracking) for miniaturized on-body activity recognition systems. We evaluate different solar cells and apply MPPT to study the suitability for on-line activity systems. With a wrist worn solar cell, MPPT allows us to track power levels of 1.35 mW for indoors/wood-workshop lighting and 7.21 mW during dull outdoor lighting conditions. The overall efficiency of the proposed technique is 96% in the best-case scenario and 80% in the worst-case.
ISBN:1424405971
9781424405978
ISSN:1550-4816
2376-8541
DOI:10.1109/ISWC.2006.286363