WO2012050938A3 - Wearable tactile keypad with stretchable artificial skin - Google Patents

Wearable tactile keypad with stretchable artificial skin Download PDF

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Publication number
WO2012050938A3
WO2012050938A3 PCT/US2011/053803 US2011053803W WO2012050938A3 WO 2012050938 A3 WO2012050938 A3 WO 2012050938A3 US 2011053803 W US2011053803 W US 2011053803W WO 2012050938 A3 WO2012050938 A3 WO 2012050938A3
Authority
WO
WIPO (PCT)
Prior art keywords
keypad
pressure
conductive
microns
change
Prior art date
Application number
PCT/US2011/053803
Other languages
French (fr)
Other versions
WO2012050938A2 (en
Inventor
Carmel S. Majidi
Robert J. Wood
Rebecca K. Kramer
Original Assignee
President And Fellows Of Harvard College
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by President And Fellows Of Harvard College filed Critical President And Fellows Of Harvard College
Publication of WO2012050938A2 publication Critical patent/WO2012050938A2/en
Publication of WO2012050938A3 publication Critical patent/WO2012050938A3/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H29/00—Switches having at least one liquid contact
    • H01H29/02—Details
    • H01H29/04—Contacts; Containers for liquid contacts
    • H01H29/06—Liquid contacts characterised by the material thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/008—Wires
    • H01H2203/01—Woven wire screen

Abstract

A hyper-elastic, thin, transparent pressure sensitive keypad can be fabricated by embedding a silicone rubber film with conductive liquid-filled microchannels. Applying pressure to the surface of the elastomer deforms the cross-section of underlying microchannels and changes the electrical resistance across the affected channels. Intersecting conductive channels form a quasi-planar network within an elastomeric matrix that registers the location, intensity and duration of applied pressure. Pressing channel intersections of the keypad triggers one of twelve keys, allowing the user to input any combination of alphabetic or numeric letters. A 5% change in channel output voltage can be required to trigger a key. In some embodiments, approximately 100 kPa of pressure is necessary to produce a 5% change in voltage across a conductive microchannel that is 20 microns in height and 200 microns in width. The sensitivity of the keypad is adjusted by changing the channel geometry and the choice of elastomeric material.
PCT/US2011/053803 2010-09-29 2011-09-29 Wearable tactile keypad with stretchable artificial skin WO2012050938A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38774010P 2010-09-29 2010-09-29
US61/387,740 2010-09-29

Publications (2)

Publication Number Publication Date
WO2012050938A2 WO2012050938A2 (en) 2012-04-19
WO2012050938A3 true WO2012050938A3 (en) 2012-08-16

Family

ID=45938884

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/053803 WO2012050938A2 (en) 2010-09-29 2011-09-29 Wearable tactile keypad with stretchable artificial skin

Country Status (1)

Country Link
WO (1) WO2012050938A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11590046B2 (en) 2016-03-13 2023-02-28 President And Fellows Of Harvard College Flexible members for anchoring to the body

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* Cited by examiner, † Cited by third party
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WO2012103073A2 (en) 2011-01-24 2012-08-02 President And Fellows Of Harvard College Non-differential elastomer curvature sensor
US9841331B2 (en) 2011-09-24 2017-12-12 President And Fellows Of Harvard College Artificial skin and elastic strain sensor
US9378907B2 (en) 2012-09-10 2016-06-28 Broadcom Corporation Liquid MEMS component responsive to pressure
CN104869969B (en) 2012-09-17 2017-06-09 哈佛大学校长及研究员协会 Soft exterior protector for aiding in human motion
WO2014066300A1 (en) 2012-10-27 2014-05-01 President And Fellows Of Harvard College Multi-axis force sensing soft artificial skin
JP6466420B2 (en) 2013-05-31 2019-02-06 プレジデント アンド フェローズ オブ ハーバード カレッジ A flexible exoskeleton suit to assist human movement
CN105992554A (en) 2013-12-09 2016-10-05 哈佛大学校长及研究员协会 Assistive flexible suits, flexible suit systems, and methods for making and control thereof to assist human mobility
CN104793770B (en) * 2014-01-16 2018-02-09 宏碁股份有限公司 The pattern method of adjustment and electronic installation of touch sensing
US10278883B2 (en) 2014-02-05 2019-05-07 President And Fellows Of Harvard College Systems, methods, and devices for assisting walking for developmentally-delayed toddlers
US10864100B2 (en) 2014-04-10 2020-12-15 President And Fellows Of Harvard College Orthopedic device including protruding members
EP3708079A1 (en) 2014-09-19 2020-09-16 President And Fellows Of Harvard College Soft exosuit for assistance with human motion
WO2016123651A1 (en) * 2015-02-06 2016-08-11 Monash University Deformable sensors and method for their fabrication using ionic liquids
US10104805B2 (en) 2016-05-09 2018-10-16 The United States Of America As Represented By The Secretary Of The Army Self cooling stretchable electrical circuit having a conduit forming an electrical component and containing electrically conductive liquid
US11498203B2 (en) 2016-07-22 2022-11-15 President And Fellows Of Harvard College Controls optimization for wearable systems
US11137867B2 (en) 2016-10-11 2021-10-05 Teveri Llc Fluidic wire touch sensors
US10302460B2 (en) 2016-10-28 2019-05-28 Microsoft Technology Licensing, Llc Liquid metal sensor
US11014804B2 (en) 2017-03-14 2021-05-25 President And Fellows Of Harvard College Systems and methods for fabricating 3D soft microstructures
CN107976273B (en) * 2017-12-29 2023-06-16 厦门大学 Microfluidic flexible sensor for pneumatic pressure measurement and manufacturing method thereof
US11530621B2 (en) 2019-10-16 2022-12-20 General Electric Company Systems and method for use in servicing a machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030014226A (en) * 2000-05-18 2003-02-15 페라테크 리미티드 Flexible switching devices
JP2006318175A (en) * 2005-05-12 2006-11-24 Smk Corp Key input device and remote control transmitter with key input device
JP2009525528A (en) * 2006-02-03 2009-07-09 テンド テック エーエス External keyboard
US20100132476A1 (en) * 2008-11-28 2010-06-03 Ching-Hsiang Cheng Strain sensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030014226A (en) * 2000-05-18 2003-02-15 페라테크 리미티드 Flexible switching devices
JP2006318175A (en) * 2005-05-12 2006-11-24 Smk Corp Key input device and remote control transmitter with key input device
JP2009525528A (en) * 2006-02-03 2009-07-09 テンド テック エーエス External keyboard
US20100132476A1 (en) * 2008-11-28 2010-06-03 Ching-Hsiang Cheng Strain sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11590046B2 (en) 2016-03-13 2023-02-28 President And Fellows Of Harvard College Flexible members for anchoring to the body

Also Published As

Publication number Publication date
WO2012050938A2 (en) 2012-04-19

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