The BioTac tactile robotic sensor is built to mimic the human fingertip and uses algorithms imitating human strategies to identify textures by touch. (Source: SynTouch)
Mike J, you're right. Every interesting development in robot R&D is being researched by more than one organization, and there are a huge number of robot labs in universities. For every subject like this one there's usually a handful of different approaches, too.
"The challenges are numerous. Interfaces must be structured so nerve fibers can grow through. They must be mechanically compatible so they don't harm the nervous system or surrounding tissues, and biocompatible to integrate with tissue and promote nerve fiber growth. They also must incorporate conductivity to allow electrode sites to connect with external circuitry, and electrical properties must be tuned to transmit neural signals."
Charles exactly what I was thinking.. if it was possible to somehow wire the finger/arm such that the signal would stimulate the brain in such a way that it would think the person was actually touch something.Charles exactly what I was thinking.. if it was possible to somehow wire the finger/arm such that the signal would stimulate the brain in such a way that it would think the person was actually touch something. If they don't have this capability now, I'm sure it will be just around the corner.
Chuck, prosthetic limbs were included by the researchers as a possible application for this. But sending signals to the brain would be a whole different set of hardware and software.
This looks like an intersting development in sensors, but, beyond the $15000 cost of the development kit, you're going to have to invest a lot of time towards developing algorithms to interpret the sensor signals.
From an automated grapsing perspective, I can imagine a system that uses the BioTac signals to detect slippage of a grasped object and automatically tighten the gripping force to compensate. This would allow lower grasping forces in mobile robot manipulation tasks where overly tight grasping is the norm.
Ann, a few years ago, doctors at the Rehabilitation Institute of Chicago were talking about adding touch to prosthetic limbs. I wonder if this would make it easier to do that, or if it would even be possible to send the signals from this finger to the human brain.
Future generations of this sensor, combined with sensors for temperature and pressure will give a very close approximation of human sensorium. Whatever sort of actuators available at that time (Festo does have some interesting ones now) will provide movement. Detxerous, sensing fingers are the result. Sensors and actuators will likely be connected to a local network router in order to simplify the trunks feeding back to the central core of the robot.
Human-like manipulators will make for very, very useful general-purpose robots, ones that don't need custom tooling to perform a job.
Those applications make sense, Ann. I would imagine there are tons of other applications as well. This technology would probably be useful in search and rescue as well as military applications.
Nice article and video, Ann. As the narrator notes, ultimately, the data from the robotic touch has to get between the ears of the user. I would think there is a wide range of uses for this technology.
naperlou thanks, those are good examples of how this technology could supplement existing inspection technology. Same goes for various robotic handling and sorting functions, some of which also already use machine vision and could be supplemented by robots with a sense of touch.
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