Communications of the ACM
Battery-Free Technology Brings Gesture Recognition to All Devices
The AllSee technology can enable new applications such as gesture recognition on existing cellphones.
Credit: University of Washington
University of Washington computer scientists have created AllSee, a gesture-recognition system that runs without batteries and enables gesture control for electronic devices that are hidden from sight.
Existing TV signals serve as AllSee's power source and a way of picking up gesture commands.
The system uses a small sensor that attaches to an electronic device, with an ultra-low-power receiver that detects and classifies gesture data from wireless transmissions. The sensors detect specific amplitude changes of wireless signals in the air created by various gestures. Because the sensors use power from wireless transmissions, they use three to four times less power than existing gesture-recognition systems, enabling mobile devices to leave the gesture technology always enabled.
Unlike AllSee, existing gesture-recognition systems must be manually enabled, require that devices be within sight, and drain phone batteries if left on.
By attaching sensors to household devices, the researchers say AllSee could enable users to interact via gesture with everyday objects and connect them to the Internet as the Internet of Things becomes a reality.
From UW News (WA)
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Abstracts Copyright © 2014 Information Inc., Bethesda, Maryland, USA
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