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A robot to find lost stuff

Isn’t this what we all need?

December 17, 2021
robotic arm
robotic arm
This fully integrated robotic arm, developed at MIT, fuses visual data from a camera and radio frequency (RF) information from an antenna to find and retrieve items that may be hidden under other objects.Courtesy of the Researchers

Those who embark on an epic quest for misplaced keys every time we try to leave the house could have relief in sight: RFusion, a prototype robotic arm designed at MIT, can locate and retrieve items buried under other things.

RFusion fuses visual input from a camera with information from a radio frequency (RF) antenna attached to its gripper, which bounces signals off cheap, batteryless RFID tags that can be stuck to all kinds of objects. Because RF signals can travel through most surfaces (like a mound of laundry that may be obscuring the keys), RFusion is able to locate a tagged item within a pile.

Using machine learning, the robotic arm zeroes in on the object’s location, moves the items on top of it, grasps it, and verifies that it picked up the right thing. 

If the system gets faster, RFusion could have many broader uses, like fulfilling orders in a warehouse or helping with household tasks. “Having robots that are able to search for things under a pile is a growing need in industry today,” says Fadel Adib, an associate professor in the Department of Electrical Engineering and Computer Science. “Right now, you can think of this as a Roomba on steroids, but in the near term, this could have a lot of applications.”

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