DocumentCode
3280853
Title
Maximum Power Point Tracking (MPPT) for on-body Context Systems
Author
Bharatula, Nagendra Bhargava ; Ward, Jamie A. ; Lukowicz, Paul ; Troster, Gerhard
Author_Institution
Wearable Comput. Lab., ETH Zurich, Zurich
fYear
2006
fDate
11-14 Oct. 2006
Firstpage
135
Lastpage
136
Abstract
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.
Keywords
solar cells; ubiquitous computing; user interfaces; wearable computers; maximum power point tracking; on-body context systems; online activity systems; Batteries; Capacitors; Photovoltaic cells; Photovoltaic systems; Power generation; Power supplies; Sensor systems; Switches; Voltage; Wearable sensors;
fLanguage
English
Publisher
ieee
Conference_Titel
Wearable Computers, 2006 10th IEEE International Symposium on
Conference_Location
Montreux
ISSN
1550-4816
Print_ISBN
1-4244-0597-1
Electronic_ISBN
1550-4816
Type
conf
DOI
10.1109/ISWC.2006.286363
Filename
4067746
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