A new magic (Wireless Power Transmission) developed by magicians of The Disney Research World, magically provides electricity to all the electrical appliances in a room without any cables!! Yes you heard it right! NO WIRES!!
Of course its not magic.. it is a new method developed by researchers at Disney Research “The SCIENCE behind the MAGIC” as says their tag line. The researches demonstrated their new technique called “Quasistatic Cavity Resonance” (QSCR), it allows users to power their electronic devices as easily as connecting to WiFi networks (only thing is that it doesn’t require password! 😉 ) eliminating the requirement of charging cables and wires.
The researchers demonstrated the QSRC inside a specially built 16-by-16 foot room at their lab. We will talk about the room’s construction later in this article. They safely produced near-field standing magnetic waves that were spread completely inside the room, making it possible to power each and every electronic device in there at the same time.
“This new innovative method will make it possible for electrical power to become as ubiquitous as WiFi,” said Alanson Sample, associate lab director & principal research scientist at Disney Research. “This in turn could enable new applications for robots and other small mobile devices by eliminating the need to replace batteries and wires for charging.”
The research report about QSCR by the Disney Research team (Matthew J. Chabalko, Mohsen Shahmohammadi and Alanson P. Sample), was published on Feb. 15, 2017 in the online journal PLOS ONE.
“In this work, we’ve demonstrated room-scale wireless power, but there’s no reason we couldn’t scale this down to the size of a toy chest or up to the size of a warehouse,” said Sample, who leads the lab’s Wireless Systems Group.
According to Sample, wireless power transfer technology is a long-standing dream. Well known inventor Nikola Tesla demonstrated a wireless lighting system in the 1890s and proposed a system for transmitting power a long distances to homes and factories, though it never came to realization. Today, most wireless power transmission technologies transmit over very short distances, typically they use charging stands or pads.
How it Works?
In the previous section you might have noticed that QSCR technology was demonstrated in a specially built room. This room’s construction plays a very important role in the wireless power transfer. The walls, floor and ceiling are made with metal.
The QSCR method involves generating electrical currents in the metalized walls, floor and ceiling of the room, which in turn produce uniform magnetic fields that spread in the entire room. This allows to efficiently send electrical power to receiving coils that operate at the same frequency as the magnetic field.
We can easily understand this concept by understanding the way in which radios work. There are different radio stations which transmit their signals in the air, and we receive those signals by setting our radio receiver’s frequency equal to the that of the radio station’s transmission frequency. If the frequencies don’t match, we cannot clearly listen to the audio.
Here, the radio station is all the walls and the center pole which transmit the electric power. All the electronic devices which receive this power are radio receivers and their frequencies are already set equal to that of the transmitter using capacitors and coils.
“Our simulations show we can transmit 1.9 kilowatts of power while meeting federal safety guidelines,” Chabalko said. “This is equivalent to simultaneously charging 320 smart phones.”
In the demonstration, the researchers constructed a 16-by-16-foot room with aluminum walls, ceiling and floor bolted to an aluminum frame. A copper pole was placed in the center of the room; a small gap was created in the pole, into which discrete capacitors were inserted.
Though the demonstration room was specially built, Sample said “it will be possible to reduce the need for metalized walls, ceilings and floors in the future. It may be possible to renovate existing buildings, for instance, with modular panels or conductive paint. Larger spaces might be accommodated by using multiple copper poles.
Combining creativity with innovation, with this research Disney has continued it’s legacy of innovative technology to enhance the gadgets and systems of future.
Thank You for reading!