Disney Research Made a Room That Will Wirelessly Charge Any Phone
00:48, Feb 22, 2017
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Charging a device without the need for electrical cords or charging cradles it stepping closer to reality, with a new method being tested out successfully.
So the walls, floor, and ceiling comprise aluminum panels, while in the center you'll find a floor-to-ceiling copper pipe that resembles an exercise pole.
The Disney Research team built a 16 by 16 foot aluminium room within their lab, placing a copper pole in the centre of the the room into which capacitors were inserted. If the receiver coil is parallel to the plane, it receives no power, which defeats the idea behind this project since the point is to enable people to charge their devices anywhere in the room.
Their method, called quasistatic cavity resonance, has the potential to make wireless electrical power as ubiquitous as Wi-Fi. These capacitors are connected to a signal generator outside the room which outputs a tone at a specific frequency. The technology may also work minus the specifically designed metal encased room.
A receiver coil that resonates at the same frequency as the magnetic field was able to pick up that magnetic field and turn it into power. In addition, the high Q-factor and sub-wavelength operation of the QSCR room allows for the inclusion of windows and doors without any significant impact on system performance.
"One of the remarkable things about this room is that with the appropriate receiver design, we can power many devices simultaneously", associate research scientist Mark Chabalko says in the video below.
A paper has been published by Disney Research. The 1900 watts of power is still within the Federal Guidelines for Specific absorption Rate (SAR) or the measure of energy that can safely be absorbed by the human body and anything higher can be deemed unsafe.
Also if there are no devices in the room using the power being broadcast it can be pretty risky, and Disney hasn't really said when, if ever, the technology might be ready for general use.
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