The key to the sensing technology is Peratech's patented 'QTC' materials. QTC's, or Quantum Tunnelling Composites, are a unique new material type which provides a measured response to force and/or touch by changing its electrical resistance - much as a dimmer light switch controls a light bulb.
This enables a simple electronic circuit within the robot to determine touch. Being easily formed into unique shapes - including being 'draped' over an object much like a garment might, QTC's provide a metaphor for how human skin works to detect touch.
Uniquely, QTC's provide a 'proportional' response - in other words detecting 'how hard' they have been touched. Further, using Peratech's patented xy scanning technology, the robot is able to detect where on a matrix of sensors applied to areas such as the forearms, shoulders and torso, it has been touched.
As robotic devices continue to make inroads to our daily life, their ability to understand the presence and interaction with humans and other objects within a space becomes critically important. This research project is hoped to produce results which could soon be applied to a range of robotics projects that MIT works upon.
Peratech's QTC technology has an established track record for use in robotics, having previously been adopted by NASA for their Robonaut device and by Shadow Robot in the UK, producers of what is widely regarded as the World's most advanced robotic hand, which have utilised QTC to sense 'touch'. However, this project with MIT is a World first in enabling a human to interact - through touch across the body of a robot - much as they would with another human.About QTC
QTC is also low power and interfaces can be designed with no start resistance so that without pressure, the switch draws no power and passes no current. Importantly, when pressure is applied, the resistance drops in proportion to the amount of pressure which allows sophisticated human machine interface designs that react to variations in pressure. QTC technology has no moving parts and requires no air gap between contacts. This makes it extremely reliable and suitable for integration into the thinnest electronic designs and with industry leading operational life.About MIT
QTC materials give enormous flexibility in the design, shape, thickness and style of a switch or pressure sensor and can be made in a range of elastomeric forms, including emulsive coatings (down to thicknesses of 10 microns), ‘bulk’ silicone or rubber and textile forms. Peratech pioneered the creation of electronic switches made from textiles as early as 2001. QTC has been recognised through numerous International awards and accolades including “Tomorrow’s World Industry Award 2002”, “Saatchi & Saatchi Innovation Award 2000” and “European Electronics Industry Award 2004”.
QTC materials have been used by organisations such as NASA, ILC Dover, Shadow Robotics and numerous government agencies World Wide. Peratech also owns SOFTswitch the pioneering creator of textile switching and Eleksen, the world leader in touch sensitive interactive textiles for electronics interface design. Further information is available from www.peratech.comFor further information, please contact
Nigel Robson | Vortex PR
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