WO2003048789A3 - Electrodynamic sensors and applications thereof - Google Patents

Electrodynamic sensors and applications thereof Download PDF

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Publication number
WO2003048789A3
WO2003048789A3 PCT/GB2002/005560 GB0205560W WO03048789A3 WO 2003048789 A3 WO2003048789 A3 WO 2003048789A3 GB 0205560 W GB0205560 W GB 0205560W WO 03048789 A3 WO03048789 A3 WO 03048789A3
Authority
WO
WIPO (PCT)
Prior art keywords
electrometer
pair
applications
electrical potentials
small electrical
Prior art date
Application number
PCT/GB2002/005560
Other languages
French (fr)
Other versions
WO2003048789A2 (en
Inventor
Terence D Clark
Robert J Prance
Christopher J Harland
Original Assignee
Terence D Clark
Robert J Prance
Christopher J Harland
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 Terence D Clark, Robert J Prance, Christopher J Harland filed Critical Terence D Clark
Priority to DE60232911T priority Critical patent/DE60232911D1/en
Priority to EP02783308A priority patent/EP1451595B1/en
Priority to AT02783308T priority patent/ATE436026T1/en
Priority to US10/497,813 priority patent/US7885700B2/en
Priority to JP2003549933A priority patent/JP4391823B2/en
Priority to AU2002347374A priority patent/AU2002347374A1/en
Publication of WO2003048789A2 publication Critical patent/WO2003048789A2/en
Publication of WO2003048789A3 publication Critical patent/WO2003048789A3/en
Priority to US13/020,890 priority patent/US8923956B2/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R5/00—Instruments for converting a single current or a single voltage into a mechanical displacement
    • G01R5/28—Electrostatic instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/30—Input circuits therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/30—Input circuits therefor
    • A61B5/307—Input circuits therefor specially adapted for particular uses
    • A61B5/308—Input circuits therefor specially adapted for particular uses for electrocardiography [ECG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/30—Input circuits therefor
    • A61B5/307—Input circuits therefor specially adapted for particular uses
    • A61B5/31—Input circuits therefor specially adapted for particular uses for electroencephalography [EEG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/30—Input circuits therefor
    • A61B5/307—Input circuits therefor specially adapted for particular uses
    • A61B5/313—Input circuits therefor specially adapted for particular uses for electromyography [EMG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/30—Input circuits therefor
    • A61B5/307—Input circuits therefor specially adapted for particular uses
    • A61B5/315—Input circuits therefor specially adapted for particular uses for electrooculography [EOG]; for electroretinography [ERG]
    • 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

Abstract

An electrodynamic sensor comprises a high input impedance electrometer adapted to measure small electrical potentials originating from an object under test and having a pair of input probes, characterised in that at least one of said pair of input probes has no direct electrical contact with said object, wherein the circuit arrangement of said electrometer comprises an amplifier which includes a combination of ancillary circuits cumulatively to increase the sensitivity of said electrometer to said small electrical potentials whilst not perturbing the electrical field associated therewith.
PCT/GB2002/005560 2001-12-07 2002-12-09 Electrodynamic sensors and applications thereof WO2003048789A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE60232911T DE60232911D1 (en) 2001-12-07 2002-12-09 ELECTRODYNAMIC SENSORS AND ITS APPLICATIONS
EP02783308A EP1451595B1 (en) 2001-12-07 2002-12-09 Electrodynamic sensors and applications thereof
AT02783308T ATE436026T1 (en) 2001-12-07 2002-12-09 ELECTRODYNAMIC SENSORS AND THEIR APPLICATIONS
US10/497,813 US7885700B2 (en) 2001-12-07 2002-12-09 Electrodynamic sensors and applications thereof
JP2003549933A JP4391823B2 (en) 2001-12-07 2002-12-09 Electrodynamic sensors and their applications
AU2002347374A AU2002347374A1 (en) 2001-12-07 2002-12-09 Electrodynamic sensors and applications thereof
US13/020,890 US8923956B2 (en) 2001-12-07 2011-02-04 Electrodynamic sensors and applications thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0129390.1A GB0129390D0 (en) 2001-12-07 2001-12-07 Electrodynamic sensors and applications thereof
GB0129390.1 2001-12-07

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/020,890 Continuation-In-Part US8923956B2 (en) 2001-12-07 2011-02-04 Electrodynamic sensors and applications thereof

Publications (2)

Publication Number Publication Date
WO2003048789A2 WO2003048789A2 (en) 2003-06-12
WO2003048789A3 true WO2003048789A3 (en) 2003-11-27

Family

ID=9927243

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/005560 WO2003048789A2 (en) 2001-12-07 2002-12-09 Electrodynamic sensors and applications thereof

Country Status (10)

Country Link
US (1) US7885700B2 (en)
EP (1) EP1451595B1 (en)
JP (1) JP4391823B2 (en)
AT (1) ATE436026T1 (en)
AU (1) AU2002347374A1 (en)
DE (1) DE60232911D1 (en)
ES (1) ES2329773T3 (en)
GB (2) GB0129390D0 (en)
TW (1) TWI308066B (en)
WO (1) WO2003048789A2 (en)

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