WO2007126716A3 - Multi-zone capacitive force sensing device and method - Google Patents

Multi-zone capacitive force sensing device and method Download PDF

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Publication number
WO2007126716A3
WO2007126716A3 PCT/US2007/007321 US2007007321W WO2007126716A3 WO 2007126716 A3 WO2007126716 A3 WO 2007126716A3 US 2007007321 W US2007007321 W US 2007007321W WO 2007126716 A3 WO2007126716 A3 WO 2007126716A3
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WO
Grant status
Application
Patent type
Prior art keywords
capacitors
conductive surface
multi
method
top plate
Prior art date
Application number
PCT/US2007/007321
Other languages
French (fr)
Other versions
WO2007126716A2 (en )
Inventor
William Dallenback
Divyasimha Harish
John Schultz
King Wong
Original Assignee
William Dallenback
Divyasimha Harish
Loadstar Sensors Inc
John Schultz
King Wong
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

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G7/00Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups
    • G01G7/06Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups by electrostatic action
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G23/00Auxiliary devices for weighing apparatus
    • G01G23/18Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
    • G01G23/36Indicating the weight by electrical means, e.g. using photoelectric cells
    • G01G23/37Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting
    • G01G23/3728Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting with wireless means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G23/00Auxiliary devices for weighing apparatus
    • G01G23/18Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
    • G01G23/36Indicating the weight by electrical means, e.g. using photoelectric cells
    • G01G23/37Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting
    • G01G23/3728Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting with wireless means
    • G01G23/3735Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting with wireless means using a digital network
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00Measuring force or stress in general
    • G01L1/14Measuring force or stress in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators
    • G01L1/142Measuring force or stress in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators using capacitors
    • G01L1/146Measuring force or stress in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators using capacitors for measuring force distributions, e.g. using force arrays
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00Apparatus for, or methods of, measuring force, e.g. due to impact, work, mechanical power, or torque, adapted for special purposes
    • G01L5/0061Force sensors associated with industrial machines or actuators
    • G01L5/0076Force sensors associated with manufacturing machines

Abstract

A multi-zone capacitive force sensing apparatus/method is disclosed. In one embodiment, an apparatus includes one or more capacitors each having an upper conductive surface and a lower conductive surface substantially parallel to the upper conductive surface, a housing with a top plate and a bottom plate to encompass the capacitors, and a sensor in the housing to generate a measurement based on a change in a distance between the upper conductive surface and the lower conductive surface of each of the capacitors when a contact zone of the top plate associated with the each of the plurality of capacitors is deflected by a force applied on the contact zone. The apparatus may also include a comparison module associated with the sensor to generate a signal indicating unevenness of a force applied on the top plate when there is any significant difference between measurements of the capacitors.
PCT/US2007/007321 2006-04-03 2007-03-23 Multi-zone capacitive force sensing device and method WO2007126716A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/397,507 2006-04-03
US11397507 US7343814B2 (en) 2006-04-03 2006-04-03 Multi-zone capacitive force sensing device and methods

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA 2648524 CA2648524A1 (en) 2006-04-03 2007-03-23 Multi-zone capacitive force sensing device and method
CN 200780011717 CN101416021B (en) 2006-04-03 2007-03-23 Multi-zone capacitive force sensing device and method
JP2009504201A JP2009532699A (en) 2006-04-03 2007-03-23 Multi-zone capacitive force detection apparatus and method
EP20070753909 EP2002199A4 (en) 2006-04-03 2007-03-23 Multi-zone capacitive force sensing device and method

Publications (2)

Publication Number Publication Date
WO2007126716A2 true WO2007126716A2 (en) 2007-11-08
WO2007126716A3 true true WO2007126716A3 (en) 2008-06-05

Family

ID=38556908

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/007321 WO2007126716A3 (en) 2006-04-03 2007-03-23 Multi-zone capacitive force sensing device and method

Country Status (7)

Country Link
US (1) US7343814B2 (en)
EP (1) EP2002199A4 (en)
JP (1) JP2009532699A (en)
KR (1) KR20090019779A (en)
CN (1) CN101416021B (en)
CA (1) CA2648524A1 (en)
WO (1) WO2007126716A3 (en)

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US20090120198A1 (en) * 2005-09-28 2009-05-14 Dallenbach William D Gap-change sensing through capacitive techniques
US20060267321A1 (en) * 2005-05-27 2006-11-30 Loadstar Sensors, Inc. On-board vehicle seat capacitive force sensing device and method
WO2007133675A3 (en) * 2006-05-11 2008-10-30 Divyasimha Harish Capacitive force-measuring device based load sensing platform
US7743667B2 (en) * 2007-02-12 2010-06-29 Loadstar Sensors, Inc. Capacitive device and method with an enhanced measurement error correction capability
CN101868705A (en) * 2007-10-16 2010-10-20 西门子公司 Eccentric load compensated load cell
JP5061878B2 (en) * 2007-12-13 2012-10-31 ヤマハ株式会社 Pressure sensor and data input device
US8096196B2 (en) * 2007-12-14 2012-01-17 Siemens Ag Load cell
US20090158856A1 (en) * 2007-12-23 2009-06-25 Divyasimha Harish Capacitive strain gauge system and method
US9222845B2 (en) 2009-08-21 2015-12-29 Regents Of The University Of Minnesota Flexible sensors and related systems for determining forces applied to an object, such as a surgical instrument, and methods for manufacturing same
CN101957168A (en) * 2010-09-26 2011-01-26 苏州瀚瑞微电子有限公司 Method for detecting deformation quantity of object through capacitance
US20140054096A1 (en) * 2010-10-12 2014-02-27 David Carruthers Apparatus capable of measuring load and load movement
JP5149416B2 (en) * 2011-04-06 2013-02-20 ファナック株式会社 Robot system and control method thereof abnormality detection function of the robot
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CN102967394A (en) * 2012-09-15 2013-03-13 华东光电集成器件研究所 Symmetrical capacitor pressure sensor and manufacture method thereof
US9638654B2 (en) 2013-11-25 2017-05-02 Oil States Industries, Inc. Method and system for health monitoring of composite elastomeric flexible elements
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Also Published As

Publication number Publication date Type
WO2007126716A2 (en) 2007-11-08 application
EP2002199A2 (en) 2008-12-17 application
CN101416021B (en) 2011-06-15 grant
EP2002199A4 (en) 2010-09-08 application
KR20090019779A (en) 2009-02-25 application
US20070227257A1 (en) 2007-10-04 application
CA2648524A1 (en) 2007-11-08 application
CN101416021A (en) 2009-04-22 application
JP2009532699A (en) 2009-09-10 application
US7343814B2 (en) 2008-03-18 grant

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