WO2013025639A1 - Polarisation de magnétomètre et détecteur d'anomalie - Google Patents

Polarisation de magnétomètre et détecteur d'anomalie Download PDF

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Publication number
WO2013025639A1
WO2013025639A1 PCT/US2012/050646 US2012050646W WO2013025639A1 WO 2013025639 A1 WO2013025639 A1 WO 2013025639A1 US 2012050646 W US2012050646 W US 2012050646W WO 2013025639 A1 WO2013025639 A1 WO 2013025639A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetometer
bias
running sums
calculating
data
Prior art date
Application number
PCT/US2012/050646
Other languages
English (en)
Inventor
William Kerry KEAL
Original Assignee
Invensense, Inc.
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
Priority claimed from US13/572,441 external-priority patent/US8577640B2/en
Application filed by Invensense, Inc. filed Critical Invensense, Inc.
Publication of WO2013025639A1 publication Critical patent/WO2013025639A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/38—Testing, calibrating, or compensating of compasses

Abstract

L'invention concerne un procédé mis en œuvre par ordinateur, un système ou un produit programme d'ordinateur qui comporte la collecte de données de magnétomètre à partir du dispositif, et le calcul du centre d'une forme des données de magnétomètre à la suite d'une minimisation. La minimisation du calcul du centre de la forme comporte en outre le calcul d'une pluralité de sommes cumulatives des données de magnétomètre ; le stockage de la pluralité de sommes cumulatives ; le stockage du compte du nombre de termes dans chacune des sommes cumulatives, et le calcul du centre de la forme et le réglage de la polarisation de magnétomètre estimée au centre de la forme. Le rayon de la sphère est calculé pour assurer une précision de l'estimateur de la polarisation de magnétomètre.
PCT/US2012/050646 2011-08-17 2012-08-13 Polarisation de magnétomètre et détecteur d'anomalie WO2013025639A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201161524703P 2011-08-17 2011-08-17
US61/524,703 2011-08-17
US13/572,441 2012-08-10
US13/572,441 US8577640B2 (en) 2011-08-17 2012-08-10 Magnetometer bias and anomaly detector

Publications (1)

Publication Number Publication Date
WO2013025639A1 true WO2013025639A1 (fr) 2013-02-21

Family

ID=47715421

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/050646 WO2013025639A1 (fr) 2011-08-17 2012-08-13 Polarisation de magnétomètre et détecteur d'anomalie

Country Status (1)

Country Link
WO (1) WO2013025639A1 (fr)

Cited By (11)

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US9443446B2 (en) 2012-10-30 2016-09-13 Trulnject Medical Corp. System for cosmetic and therapeutic training
US9792836B2 (en) 2012-10-30 2017-10-17 Truinject Corp. Injection training apparatus using 3D position sensor
US9922578B2 (en) 2014-01-17 2018-03-20 Truinject Corp. Injection site training system
US10235904B2 (en) 2014-12-01 2019-03-19 Truinject Corp. Injection training tool emitting omnidirectional light
US10269266B2 (en) 2017-01-23 2019-04-23 Truinject Corp. Syringe dose and position measuring apparatus
US10290232B2 (en) 2014-03-13 2019-05-14 Truinject Corp. Automated detection of performance characteristics in an injection training system
US10500340B2 (en) 2015-10-20 2019-12-10 Truinject Corp. Injection system
US10648790B2 (en) 2016-03-02 2020-05-12 Truinject Corp. System for determining a three-dimensional position of a testing tool
US10650703B2 (en) 2017-01-10 2020-05-12 Truinject Corp. Suture technique training system
US10743942B2 (en) 2016-02-29 2020-08-18 Truinject Corp. Cosmetic and therapeutic injection safety systems, methods, and devices
US10849688B2 (en) 2016-03-02 2020-12-01 Truinject Corp. Sensory enhanced environments for injection aid and social training

Citations (6)

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US20040236510A1 (en) * 2002-03-01 2004-11-25 Ockerse Harold C. Electronic compass system
US20070055468A1 (en) * 2005-09-02 2007-03-08 Nokia Corporation Calibration of 3D field sensors
US20090157341A1 (en) * 2007-04-17 2009-06-18 Schlumberger Technology Corporation Methods of Correcting Accelerometer and Magnetometer Measurements
US20100312509A1 (en) * 2009-06-05 2010-12-09 Apple Inc. Calibration techniques for an electronic compass in a portable device
US20110077889A1 (en) * 2009-09-28 2011-03-31 Teledyne Rd Instruments, Inc. System and method of magnetic compass calibration
US20110106477A1 (en) * 2009-11-04 2011-05-05 Qualcomm Incorporated Calibrating multi-dimensional sensor for offset, sensitivity, and non-orthogonality

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040236510A1 (en) * 2002-03-01 2004-11-25 Ockerse Harold C. Electronic compass system
US20070055468A1 (en) * 2005-09-02 2007-03-08 Nokia Corporation Calibration of 3D field sensors
US20090157341A1 (en) * 2007-04-17 2009-06-18 Schlumberger Technology Corporation Methods of Correcting Accelerometer and Magnetometer Measurements
US20100312509A1 (en) * 2009-06-05 2010-12-09 Apple Inc. Calibration techniques for an electronic compass in a portable device
US20110077889A1 (en) * 2009-09-28 2011-03-31 Teledyne Rd Instruments, Inc. System and method of magnetic compass calibration
US20110106477A1 (en) * 2009-11-04 2011-05-05 Qualcomm Incorporated Calibrating multi-dimensional sensor for offset, sensitivity, and non-orthogonality

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10643497B2 (en) 2012-10-30 2020-05-05 Truinject Corp. System for cosmetic and therapeutic training
US9792836B2 (en) 2012-10-30 2017-10-17 Truinject Corp. Injection training apparatus using 3D position sensor
US9443446B2 (en) 2012-10-30 2016-09-13 Trulnject Medical Corp. System for cosmetic and therapeutic training
US11854426B2 (en) 2012-10-30 2023-12-26 Truinject Corp. System for cosmetic and therapeutic training
US10902746B2 (en) 2012-10-30 2021-01-26 Truinject Corp. System for cosmetic and therapeutic training
US11403964B2 (en) 2012-10-30 2022-08-02 Truinject Corp. System for cosmetic and therapeutic training
US9922578B2 (en) 2014-01-17 2018-03-20 Truinject Corp. Injection site training system
US10896627B2 (en) 2014-01-17 2021-01-19 Truinjet Corp. Injection site training system
US10290231B2 (en) 2014-03-13 2019-05-14 Truinject Corp. Automated detection of performance characteristics in an injection training system
US10290232B2 (en) 2014-03-13 2019-05-14 Truinject Corp. Automated detection of performance characteristics in an injection training system
US10235904B2 (en) 2014-12-01 2019-03-19 Truinject Corp. Injection training tool emitting omnidirectional light
US10500340B2 (en) 2015-10-20 2019-12-10 Truinject Corp. Injection system
US10743942B2 (en) 2016-02-29 2020-08-18 Truinject Corp. Cosmetic and therapeutic injection safety systems, methods, and devices
US10849688B2 (en) 2016-03-02 2020-12-01 Truinject Corp. Sensory enhanced environments for injection aid and social training
US10648790B2 (en) 2016-03-02 2020-05-12 Truinject Corp. System for determining a three-dimensional position of a testing tool
US11730543B2 (en) 2016-03-02 2023-08-22 Truinject Corp. Sensory enhanced environments for injection aid and social training
US10650703B2 (en) 2017-01-10 2020-05-12 Truinject Corp. Suture technique training system
US11710424B2 (en) 2017-01-23 2023-07-25 Truinject Corp. Syringe dose and position measuring apparatus
US10269266B2 (en) 2017-01-23 2019-04-23 Truinject Corp. Syringe dose and position measuring apparatus

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