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Title: Optical based tactile shear and normal load sensor

Abstract

Various technologies described herein pertain to a tactile sensor that senses normal load and/or shear load. The tactile sensor includes a first layer and an optically transparent layer bonded together. At least a portion of the first layer is made of optically reflective material. The optically transparent layer is made of resilient material (e.g., clear silicone rubber). The tactile sensor includes light emitter/light detector pair(s), which respectively detect either normal load or shear load. Light emitter(s) emit light that traverses through the optically transparent layer and reflects off optically reflective material of the first layer, and light detector(s) detect and measure intensity of reflected light. When a normal load is applied, the optically transparent layer compresses, causing a change in reflected light intensity. When shear load is applied, a boundary between optically reflective material and optically absorptive material is laterally displaced, causing a change in reflected light intensity.

Inventors:
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1183925
Patent Number(s):
9052775
Application Number:
13/556,393
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
G - PHYSICS G01 - MEASURING G01L - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Salisbury, Curt Michael. Optical based tactile shear and normal load sensor. United States: N. p., 2015. Web.
Salisbury, Curt Michael. Optical based tactile shear and normal load sensor. United States.
Salisbury, Curt Michael. Tue . "Optical based tactile shear and normal load sensor". United States. https://www.osti.gov/servlets/purl/1183925.
@article{osti_1183925,
title = {Optical based tactile shear and normal load sensor},
author = {Salisbury, Curt Michael},
abstractNote = {Various technologies described herein pertain to a tactile sensor that senses normal load and/or shear load. The tactile sensor includes a first layer and an optically transparent layer bonded together. At least a portion of the first layer is made of optically reflective material. The optically transparent layer is made of resilient material (e.g., clear silicone rubber). The tactile sensor includes light emitter/light detector pair(s), which respectively detect either normal load or shear load. Light emitter(s) emit light that traverses through the optically transparent layer and reflects off optically reflective material of the first layer, and light detector(s) detect and measure intensity of reflected light. When a normal load is applied, the optically transparent layer compresses, causing a change in reflected light intensity. When shear load is applied, a boundary between optically reflective material and optically absorptive material is laterally displaced, causing a change in reflected light intensity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {6}
}

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Works referenced in this record:

A robust, low-cost and low-noise artificial skin for human-friendly robots
conference, May 2010


Conformable and scalable tactile sensor skin for curved surfaces
conference, January 2006


Embedded Sensors for Biomimetic Robotics via Shape Deposition Manufacturing
conference, January 2006


Simulation of a sensor array for multiparameter measurements at the prosthetic limb interface
conference, July 2004


Characterization of a novel hybrid silicon three-axial force sensor
journal, September 2005


Embedded flexible optical shear sensor
conference, November 2010


An optical 3D force sensor for biomedical devices
conference, June 2012

  • Lincoln, Lucas Samuel; Quigley, Morgan; Rohrer, Brandon
  • 2012 4th IEEE RAS & EMBS International Conference on Biomedical Robotics and Biomechatronics (BioRob 2012), 2012 4th IEEE RAS & EMBS International Conference on Biomedical Robotics and Biomechatronics (BioRob)
  • https://doi.org/10.1109/BioRob.2012.6290820