Tag: tactile sensor

Ingenious Sensor Gives Robots Better-Than-Human Sense of Touch—and Fingerprints

By Sophie Bushwick | June 21, 2012 12:09 pm

Are your fingers resting on a slick touchscreen or a wooden desk? The sense of touch and ability to differentiate between textures provide invaluable information about the world around us—and now they may be able to transmit that information to robots and prosthetic hands at well.

Researchers have developed a mechanical “finger” called the BioTac, made up of a rigid central sensor surrounded by liquid and covered in a flexible skin. When the BioTac strokes a surface, that surface’s texture produces unique vibrations in the skin, which has ridges like those seen in a human fingerprint. And the BioTac’s software can interpret those vibrations, along with the force that the surface exerts on the mechanical finger, to identify 117 different textures with a 95 percent success rate. In fact, when it came to distinguishing between textures, the BioTac actually out-performed humans.

[via Pop Sci]

Video courtesy of University of Southern California

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