Modeling the effect of orientation on human-powered inertial energy harvesters

Merrett, Geoff V., Huang, Hui and White, Neil M. (2014) Modeling the effect of orientation on human-powered inertial energy harvesters IEEE Sensors Journal, 15, (1), pp. 434-441. (doi:10.1109/JSEN.2014.2346019).


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A fundamental challenge in realizing body-worn sensors is in providing an effective and long-lasting power supply. Issues regarding batteries have prompted researchers to investigate powering devices by extracting energy from the inertial movement of the human body. While previous studies have investigated the effect of generator location and wearer activity on harvestable power, they have not considered the orientation of the generator; this is the focus of this paper. Acceleration data collected across a sample population (ten participants) during different activities (walking and running) and generator location (five locations on the body) are presented. These data are processed to analyze the effect of orientation, and we find that it can significantly reduce the harvestable power. Subsequently, we propose and analyze how two degree-of-freedom generators can improve tolerance to rotation; results indicate that it can be improved by one order of magnitude.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1109/JSEN.2014.2346019
ISSNs: 1530-437X (print)
Keywords: energy harvesting, body sensor networks, micropower generator
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Organisations: Electronic & Software Systems, EEE
ePrint ID: 367661
Date :
Date Event
6 March 2014Submitted
7 August 2014e-pub ahead of print
January 2015Published
Date Deposited: 04 Aug 2014 15:52
Last Modified: 17 Apr 2017 13:18
Further Information:Google Scholar

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