WO2005065090A3 - Techniques for building-scale electrostatic tomography - Google Patents

Techniques for building-scale electrostatic tomography Download PDF

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Publication number
WO2005065090A3
WO2005065090A3 PCT/US2004/038875 US2004038875W WO2005065090A3 WO 2005065090 A3 WO2005065090 A3 WO 2005065090A3 US 2004038875 W US2004038875 W US 2004038875W WO 2005065090 A3 WO2005065090 A3 WO 2005065090A3
Authority
WO
WIPO (PCT)
Prior art keywords
emitter
receiver
electrodes
circuits
techniques
Prior art date
Application number
PCT/US2004/038875
Other languages
French (fr)
Other versions
WO2005065090A2 (en
Inventor
Nicholas C Donnangelo
Original Assignee
Mitre Corp
Nicholas C Donnangelo
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 Mitre Corp, Nicholas C Donnangelo filed Critical Mitre Corp
Publication of WO2005065090A2 publication Critical patent/WO2005065090A2/en
Publication of WO2005065090A3 publication Critical patent/WO2005065090A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/60—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrostatic variables, e.g. electrographic flaw testing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0536—Impedance imaging, e.g. by tomography
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/12—Measuring electrostatic fields or voltage-potential
    • G01R29/14—Measuring field distribution

Abstract

Techniques for imaging a search region 370 to detect a dielectric target 350a, 350b include placing multiple electrodes 310c, 31Od, 310e, 31Of, 310g, 31 Oh outside the search region. At least two electrodes are activated independently of each other. Emitter circuits 387 are connected to corresponding emitter electrodes 386. Each emitter circuit 387 is configured for using its emitter electrode 386 to produce an electric field with wavelength longer than about one hundred meters. Receiver circuits 388 are connected to corresponding receiver electrodes 386. Each receiver circuit 388 is configured for using its receiver electrode to measure a property of an electric fiel produced, at least in part, by an emitter electrode 386. A processor 395 determines a property of a dielectric target 350a, 350b inside the search region 370 based on measurements from the receiver circuits 388 using a subset of the emitter circuits. Among other uses, these techniques allow humans to be detected inside building-size regions 360, even when hidden by visually opaque blocking material of small dielectric constant.
PCT/US2004/038875 2003-12-30 2004-11-22 Techniques for building-scale electrostatic tomography WO2005065090A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53307703P 2003-12-30 2003-12-30
US60/533,077 2003-12-30

Publications (2)

Publication Number Publication Date
WO2005065090A2 WO2005065090A2 (en) 2005-07-21
WO2005065090A3 true WO2005065090A3 (en) 2007-05-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/038875 WO2005065090A2 (en) 2003-12-30 2004-11-22 Techniques for building-scale electrostatic tomography

Country Status (2)

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US (1) US7330032B2 (en)
WO (1) WO2005065090A2 (en)

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US7330032B2 (en) 2008-02-12
US20050167588A1 (en) 2005-08-04
WO2005065090A2 (en) 2005-07-21

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