Intel has made progress in a technology that could lead to the wireless recharging of gadgets and the end of power-cord spaghetti behind electronic devices.
It says it has increased the efficiency of a technique for wirelessly powering consumer gadgets and computers, a development that could allow a person to simply place a device on a desktop or countertop to power it. It could bring the consumer electronics industry a step closer to a world without wires.
On Thursday, the chip maker planned to demonstrate the use of a magnetic field to broadcast up to 60 watts of power up to a meter. It says it can do that losing only 25 percent of the power in transmission.
PHOTO: AP
“Something like this technology could be embedded in tables and work surfaces,” said Justin Rattner, Intel’s chief technology officer. “So as soon as you put down an appropriately equipped device it would immediately begin drawing power.”
The presentation is part of the company’s Intel Developer Forum, a series of events that the company uses to showcase new technologies in personal computing and related consumer technologies.
The research project, which is being led by Joshua Smith, an Intel researcher at a company laboratory in Seattle, builds on the work of Massachusetts Institute of Technology (MIT) physicist Marin Soljacic, who pioneered the idea of the wireless transmission of power using resonant magnetic fields. Induction is already used to recharge electric toothbrushes, but that approach is limited by the need for the toothbrush to be placed in the base station.
Intel is in the midst of an internal debate over whether the technology may also permit the shift to supercapacitors, which can be recharged far more quickly than today’s batteries.
“In the future, your kitchen counters might do it,” Rattner said. “You’d just drop your espresso maker down on them and you would never have to plug it in.”
The Intel team describes its system as a “wireless resonant energy link,” and is experimenting with antennas less than 60cm in diameter to remotely light a 60-watt light bulb.
In 2006, the MIT researchers demonstrated that by sending electromagnetic waves around a waveguide it was possible to produce “evanescent” waves that could permit electricity to wirelessly tunnel to another waveguide “tuned” to the transmitting loop.
Several start-up firms, including WildCharge, based in Boulder, Colorado, and WiPower, based in Altamonte Springs, Florida, have already announced related wireless charging technologies. But these demonstrations have required that the consumer gadgets touch the charging station.
The Intel researchers said they were thinking about designing a system that would make it possible to recharge a laptop computer without wires.
“From Intel’s position that seems like the thing to shoot for right now,” Smith said.
The researchers said that Intel could produce a prototype design and that it might contribute to products by developing chip sets for manufacturers.
On Thursday Smith planned to demonstrate an application using an electric field sensor — a natural capability of some fish — to give added dexterity to robotic arms and hands. He has designed a sensor system that makes it possible for a robot hand to gauge the size of an apple and then grasp it.
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