Title:
STRESS AND DISPLACEMENT SENSORS AND METHODS OF SENSING
Document Type and Number:
WIPO Patent Application WO/2022/217120
Kind Code:
A3
Abstract:
Sensors include an optical source configured to emit a beam directed to an opposing surface having a reflectance pattern, and an optical detector situated in relation to the optical source to detect a portion of the beam reflected by the opposing surface and to produce an output signal that varies based on (i) a relative displacement between the reflectance pattern and the optical detector and (ii) a spatially variable reflectance resulting from the relative displacement. Reflectance patterns can be spatially variable and/or randomly arranged. Displacements in a compressive or tensile direction can be detected. Methods of operation and fabrication of sensors are also disclosed.
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Inventors:
ONG KEAT GHEE (US)
MCGEEHAN MICHAEL (US)
MCGEEHAN MICHAEL (US)
Application Number:
PCT/US2022/024116
Publication Date:
November 10, 2022
Filing Date:
April 08, 2022
Export Citation:
Assignee:
UNIV OREGON (US)
International Classes:
A61B5/00; G01B11/16; G01D5/34
Foreign References:
| US20090302242A1 | 2009-12-10 | |||
| US7518737B2 | 2009-04-14 | |||
| US20180066937A1 | 2018-03-08 | |||
| US20060192976A1 | 2006-08-31 | |||
| US20100213360A1 | 2010-08-26 | |||
| US20070040107A1 | 2007-02-22 | |||
| EP3693139A1 | 2020-08-12 | |||
| US20180328814A1 | 2018-11-15 | |||
| EP1724652A2 | 2006-11-22 |
Other References:
LUCAS SAMUEL LINCOLN ET AL: "An elastomeric insole for 3-axis ground reaction force measurement", BIOMEDICAL ROBOTICS AND BIOMECHATRONICS (BIOROB), 2012 4TH IEEE RAS&EMBS INTERNATIONAL CONFERENCE ON, IEEE, 24 June 2012 (2012-06-24), pages 1512 - 1517, XP032234101, ISBN: 978-1-4577-1199-2, DOI: 10.1109/BIOROB.2012.6290838
MISSINNE JEROEN ET AL: "Two axis optoelectronic tactile shear stress sensor", SENSORS AND ACTUATORS A: PHYSICAL, vol. 186, 1 October 2012 (2012-10-01), NL, pages 63 - 68, XP055938347, ISSN: 0924-4247, DOI: 10.1016/j.sna.2012.01.038
MISSINNE JEROEN ET AL: "Two axis optoelectronic tactile shear stress sensor", SENSORS AND ACTUATORS A: PHYSICAL, vol. 186, 1 October 2012 (2012-10-01), NL, pages 63 - 68, XP055938347, ISSN: 0924-4247, DOI: 10.1016/j.sna.2012.01.038
Attorney, Agent or Firm:
MCGRATH, Ethan A. et al. (US)
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