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Recently, Shiam Grakota, an associate professor in the Department of Computer Science and Engineering at the University of Washington, demonstrated a completely new way
to power electronic devices.
The technology, called Ambient Backscatter, transmits binary code by alternately absorbing and reflecting Wi-Fi or TV signals in the air, allowing electronic devices to be used
even when the battery is depleted.
Since entering the digital age, batteries on electronic devices have caused countless troubles, such as expensive and troublesome replacement, and ecological pollution
.
But if the technology being worked on at the University of Washington comes to fruition, batteries will no longer be needed for electronic devices in the future
.
Grakota said past trials have shown that a small amount of power can be transmitted over Wi-Fi signals, but that can cause too much interference and make wireless networks slower
.
But recently, Grakota and his colleagues came up with a new way to maintain data speeds
by hopping between Wi-Fi channels in the 2.
4GHz radio band.
So far, this technique has only been used for those devices that require a very small amount of power, which need to be very close to the router and cannot exceed the range
of 8 meters.
Grakota did not say when the electronics will be able to replace batteries
with Ambient Backscatter technology.
He acknowledges that the technology still can't be used in power-hungry devices like smartphones unless they are fundamentally redesigned
.
But Wi-Fi Backscatter at least ensures that the smoke alarm in your home alerts you before the battery runs out, wakes up babies, drives dogs crazy, and more
.
That's alone is enough for us to accept it
.
Recently, Shiam Grakota, an associate professor in the Department of Computer Science and Engineering at the University of Washington, demonstrated a completely new way
to power electronic devices.
The technology, called Ambient Backscatter, transmits binary code by alternately absorbing and reflecting Wi-Fi or TV signals in the air, allowing electronic devices to be used
even when the battery is depleted.
Since entering the digital age, batteries on electronic devices have caused countless troubles, such as expensive and troublesome replacement, and ecological pollution
.
But if the technology being worked on at the University of Washington comes to fruition, batteries will no longer be needed for electronic devices in the future
.
Grakota said past trials have shown that a small amount of power can be transmitted over Wi-Fi signals, but that can cause too much interference and make wireless networks slower
.
But recently, Grakota and his colleagues came up with a new way to maintain data speeds
by hopping between Wi-Fi channels in the 2.
4GHz radio band.
So far, this technique has only been used for those devices that require a very small amount of power, which need to be very close to the router and cannot exceed the range
of 8 meters.
Grakota did not say when the electronics will be able to replace batteries
with Ambient Backscatter technology.
He acknowledges that the technology still can't be used in power-hungry devices like smartphones unless they are fundamentally redesigned
.
But Wi-Fi Backscatter at least ensures that the smoke alarm in your home alerts you before the battery runs out, wakes up babies, drives dogs crazy, and more
.
That's alone is enough for us to accept it
.
