WO2003006922A1 - Appareil pour determiner l'orientation par rapport a un champ magnetique dans un espace tridimensionnel - Google Patents

Appareil pour determiner l'orientation par rapport a un champ magnetique dans un espace tridimensionnel Download PDF

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Publication number
WO2003006922A1
WO2003006922A1 PCT/GB2002/003173 GB0203173W WO03006922A1 WO 2003006922 A1 WO2003006922 A1 WO 2003006922A1 GB 0203173 W GB0203173 W GB 0203173W WO 03006922 A1 WO03006922 A1 WO 03006922A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic field
detecting
operative
output
user
Prior art date
Application number
PCT/GB2002/003173
Other languages
English (en)
Inventor
Emanuel Cohen
Nasr-Eddine Djennati
Rodney Jackson
John Fuller
Original Assignee
Hall Effect Technologies Ltd.
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 Hall Effect Technologies Ltd. filed Critical Hall Effect Technologies Ltd.
Publication of WO2003006922A1 publication Critical patent/WO2003006922A1/fr

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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
    • G01C17/02—Magnetic compasses
    • G01C17/28—Electromagnetic compasses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/0206—Three-component magnetometers

Definitions

  • the present invention relates to apparatus for determining orientation relative to a magnetic field in a three dimensional space.
  • a means for concentrating magnetic field is associated with the means for detecting.
  • the means for concentrating is preferably arranged to concentrate magnetic field flowing in one or more directions and preferably comprises a rod of material of high
  • the means for detecting may be sandwiched
  • Each detector may be associated with a respective means for concentrating
  • One or more of the detectors may comprise a Hall Effect device.
  • Other suitable sensors may comprise a Hall Effect device.
  • detectors or combinations of detectors may, however, be used, including but not limited to
  • detectors Different types may be used to detect the field in different directions.
  • three separate Hall Effect devices are employed each sandwiched between two rods of material of high magnetic permeability.
  • a so-called multi dimensional Hall Effect device is employed capable of
  • the means for processing preferably comprises a microprocessor.
  • an output means operative to convey information
  • the output of the means for detecting a magnetic field preferably comprises three signals, each signal being indicative of the detected magnetic field strength in one of the three directions.
  • Figure 1 shows an exploded perspective view of a Hall Effect device and ferrite rod
  • Figure 2 shows an arrangement of three of the type of assembly illustrated in Figure i;
  • FIG. 3 shows part of an alternative embodiment of the present invention.
  • FIG 4 shows a schematic representation of an electronic circuit suitable for use with either of the arrangements illustrated in Figures 2 or 3.
  • a Hall Effect chip 1 is shown disposed between respective ends of two substantially cylindrical ferrite rods 2.
  • the ferrite rods serve to concentrate
  • the Hall chip includes a number of electrical
  • Figure 2 shows an arrangement of Hall Effect chip and ferrite rod assemblies of the
  • Figure 3 shows an alternative arrangement to that shown in Figure 2. This
  • a body 6 of ferrite material having six arms radiating from a central point the arms being arranged into three pairs, the arms of each pair extending along a
  • Three Hall Effect chips are located in the body and arranged to measure
  • a single multi-dimensional Hall chip is disposed in the body and operative to
  • this output is conducted to a processing means, an embodiment of which is
  • each Hall Effect device 2 is conducted to an amplifier and then to an analog to digital converter and multiplexer 4
  • the microprocessor is connected to an output
  • the microprocessor 5 is operative to determine the orientation of the three Hall Effect devices 2 in three dimensions with respect to a magnetic field.
  • the X, Y and Z directions define three orthogonal planes, the X, Y plane, the X,Z
  • the apparatus is useful, for example, for determining orientation relative to the
  • earth's magnetic field Such information is usual for navigation and positioning of objects.
  • the apparatus may be arranged so that a user may select a particular direction as a reference direction, and then operate to indicate deviation from that direction.
  • a direction may be selected by orienting the means for detecting magnetic field in a chosen direction
  • the processor may then produce an output when the orientation of the means
  • the output may indicate the way in which the orientation of the means for

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

L'invention concerne un appareil permettant de déterminer l'orientation par rapport à un champ magnétique dans un espace tridimensionnel. Cet appareil comprend un dispositif (2) de détection d'un champ magnétique dans chacune des trois directions sensiblement orthogonales, qui produit une sortie correspondant au champ magnétique détecté dans chacune des directions, ainsi qu'un moyen de traitement qui traite la sortie pour déterminer l'orientation du dispositif de détection par rapport au champ magnétique détecté. Le dispositif de détection du champ magnétique peut être associé à un ou plusieurs dispositifs pour concentrer le champ magnétique, par exemple, un bâtonnet en ferrite. Le dispositif de détection du champ magnétique peut comprendre un ou plusieurs dispositifs à effet Hall. Le dispositif de traitement peut comprendre un organe de sortie permettant de transmettre des informations à l'utilisateur et un organe d'entrée permettant à l'utilisateur de saisir les informations ; peut être conçu pour permettre à l'utilisateur de saisir une direction ; et informe ce dernier lorsque dispositif de détection s'écarte de cette direction.
PCT/GB2002/003173 2001-07-10 2002-07-10 Appareil pour determiner l'orientation par rapport a un champ magnetique dans un espace tridimensionnel WO2003006922A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0116757A GB0116757D0 (en) 2001-07-10 2001-07-10 Apparatus for determining orientation relative to a magnetic field in a three dimensional space
GB0116757.6 2001-07-10

Publications (1)

Publication Number Publication Date
WO2003006922A1 true WO2003006922A1 (fr) 2003-01-23

Family

ID=9918180

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/003173 WO2003006922A1 (fr) 2001-07-10 2002-07-10 Appareil pour determiner l'orientation par rapport a un champ magnetique dans un espace tridimensionnel

Country Status (2)

Country Link
GB (1) GB0116757D0 (fr)
WO (1) WO2003006922A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10983019B2 (en) 2019-01-10 2021-04-20 Ka Group Ag Magnetoelastic type torque sensor with temperature dependent error compensation
US11486776B2 (en) 2016-12-12 2022-11-01 Kongsberg Inc. Dual-band magnetoelastic torque sensor
US11821763B2 (en) 2016-05-17 2023-11-21 Kongsberg Inc. System, method and object for high accuracy magnetic position sensing
US12025521B2 (en) 2020-02-11 2024-07-02 Brp Megatech Industries Inc. Magnetoelastic torque sensor with local measurement of ambient magnetic field

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906641A (en) * 1971-09-27 1975-09-23 Metal Marine Pilot Inc Autopilot employing improved hall-effect direction sensor
EP0176633A1 (fr) * 1983-07-09 1986-04-09 British Aerospace Public Limited Company Compas
FR2580817A1 (fr) * 1985-04-22 1986-10-24 Gabriel Leonetout Systeme de balisage et de detecteur de balises magnetiques
US5394029A (en) * 1993-02-17 1995-02-28 Gay; John C. Geomagnetic orientation sensor, means, and system
DE4429832A1 (de) * 1994-08-23 1996-02-29 Itt Ind Gmbh Deutsche Magnetfeldkompaß

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906641A (en) * 1971-09-27 1975-09-23 Metal Marine Pilot Inc Autopilot employing improved hall-effect direction sensor
EP0176633A1 (fr) * 1983-07-09 1986-04-09 British Aerospace Public Limited Company Compas
FR2580817A1 (fr) * 1985-04-22 1986-10-24 Gabriel Leonetout Systeme de balisage et de detecteur de balises magnetiques
US5394029A (en) * 1993-02-17 1995-02-28 Gay; John C. Geomagnetic orientation sensor, means, and system
DE4429832A1 (de) * 1994-08-23 1996-02-29 Itt Ind Gmbh Deutsche Magnetfeldkompaß

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11821763B2 (en) 2016-05-17 2023-11-21 Kongsberg Inc. System, method and object for high accuracy magnetic position sensing
US11486776B2 (en) 2016-12-12 2022-11-01 Kongsberg Inc. Dual-band magnetoelastic torque sensor
US10983019B2 (en) 2019-01-10 2021-04-20 Ka Group Ag Magnetoelastic type torque sensor with temperature dependent error compensation
US12025521B2 (en) 2020-02-11 2024-07-02 Brp Megatech Industries Inc. Magnetoelastic torque sensor with local measurement of ambient magnetic field

Also Published As

Publication number Publication date
GB0116757D0 (en) 2001-08-29

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