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arXiv:1505.06815cs.NI

Powering the Next Billion Devices with Wi-Fi

Vamsi Talla, Bryce Kellogg, Benjamin Ransford, Saman Naderiparizi, Shyamnath Gollakota, Joshua R. Smith

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Abstract

We present the first power over Wi-Fi system that delivers power and works with existing Wi-Fi chipsets. Specifically, we show that a ubiquitous piece of wireless communication infrastructure, the Wi-Fi router, can provide far field wireless power without compromising the network's communication performance. Building on our design we prototype, for the first time, battery-free temperature and camera sensors that are powered using Wi-Fi chipsets with ranges of 20 and 17 feet respectively. We also demonstrate the ability to wirelessly recharge nickel-metal hydride and lithium-ion coin-cell batteries at distances of up to 28 feet. Finally, we deploy our system in six homes in a metropolitan area and show that our design can successfully deliver power via Wi-Fi in real-world network conditions.

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DOI
Subjects
cs.NINetworking and Internet Architecture

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Linked by 1 identifiable commenter in 1 comment across 1 thread, from Jun 2015 to Jun 2015. Found in 3 HN submissions from Jun 2015 to Nov 2018. Open submission discussions.

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  1. University of Washington develops Wi-Fi powered surveillance camera Technology 1 comment

    • Better source: http://arxiv.org/abs/1505.06815 or http://www.newscientist.com/article/dn27633-gadgets-powered-... . None of the sources seem to want to give the key number, which is amount of power harvested by distance, although in section 8 of the original paper it says…

      jimrandomhView on HNParent context

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