Paper Info
Title
Piezoresistive Tactile Sensor Discriminating Multidirectional Forces
Abstract
Flexible tactile sensors capable of detecting the magnitude and direction of the applied force together are of great interest for application in human-interactive robots, prosthetics, and bionic arms/feet. Human skin contains excellent tactile sensing elements, mechanoreceptors, which detect their assigned tactile stimuli and transduce them into electrical signals. The transduced signals are transmitted through separated nerve fibers to the central nerve system without complicated signal processing. Inspired by the function and organization of human skin, we present a piezoresistive type tactile sensor capable of discriminating the direction and magnitude of stimulations without further signal processing. Our tactile sensor is based on a flexible core and four sidewall structures of elastomer, where highly sensitive interlocking piezoresistive type sensing elements are embedded. We demonstrate the discriminating normal pressure and shear force simultaneously without interference between the applied forces. The developed sensor can detect down to 128 Pa in normal pressure and 0.08 N in shear force, respectively. The developed sensor can be applied in the prosthetic arms requiring the restoration of tactile sensation to discriminate the feeling of normal and shear force like human skin.
Year
DOI
Venue
2015
10.3390/s151025463
SENSORS
Keywords
Field
DocType
tactile sensor,piezoresistive,shear force,carbon nanotube,interlocking microdome,multidirectional detection
Transducer,Signal processing,Signal,Interlocking,Electronic engineering,Shear force,Artificial intelligence,Engineering,Robotics,Piezoresistive effect,Tactile sensor
Journal
Volume
Issue
ISSN
15
10.0
1424-8220
Citations 
PageRank 
References 
6
0.71
2
Authors
5
Name
Order
Citations
PageRank
Youngdo Jung172.53
duckgyu lee260.71
jonghwa park360.71
hyunhyub ko471.39
Hyuneui Lim571.86