Bulk material based thermoelectric energy harvesting for wireless sensor applications

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Bulk material based thermoelectric energy harvesting for wireless sensor applications

Wang, Wensi S.; Magnin, Wassim; Wang, Ningning; Hayes, Michael; O'Flynn, Brendan; Ó Mathúna, S. Cian
Date: 2011
Copyright: © 2011, The authors. Published under licence in Journal of Physics: Conference Series by IOP Publishing Ltd.
Citation: Wang, Wensi S.; Magnin, Wassim; Wang, Ningning; Hayes, Michael; O'Flynn, Brendan; Ó Mathúna, S. Cian (2011) 'Bulk material based thermoelectric energy harvesting for wireless sensor applications'. Journal of Physics: Conference Series, 307 (1) 012030. doi: 10.1088/1742-6596/307/1/012030
Published Version: 10.1088/1742-6596/307/1/012030

Abstract:

The trend towards smart building and modern manufacturing demands ubiquitous sensing in the foreseeable future. Self-powered Wireless sensor networks (WSNs) are essential for such applications. This paper describes bulk material based thermoelectric generator (TEG) design and implementation for WSN. A 20cm2 Bi0.5Sb1.5Te3 based TEG was created with optimized configuration and generates 2.7mW in typical condition. A novel load matching method is used to maximize the power output. The implemented power management module delivers 651μW to WSN in 50 °C. With average power consumption of Tyndall WSN measured at 72μW, feasibility of utilizing bulk material TEG to power WSN is demonstrated.

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