GB1168678A - Improvements in or relating to the Determination of the Direction of Magnetic Fields. - Google Patents

Improvements in or relating to the Determination of the Direction of Magnetic Fields.

Info

Publication number
GB1168678A
GB1168678A GB1184067A GB1184067A GB1168678A GB 1168678 A GB1168678 A GB 1168678A GB 1184067 A GB1184067 A GB 1184067A GB 1184067 A GB1184067 A GB 1184067A GB 1168678 A GB1168678 A GB 1168678A
Authority
GB
United Kingdom
Prior art keywords
magnetic field
axis
rotation
field
march
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB1184067A
Inventor
Peter Berners Fellgett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1184067A priority Critical patent/GB1168678A/en
Publication of GB1168678A publication Critical patent/GB1168678A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01R33/028—Electrodynamic magnetometers
    • G01R33/0283—Electrodynamic magnetometers in which a current or voltage is generated due to relative movement of conductor and magnetic field

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

1,168,678. Determining direction of magnetic field. P.B. FELLGETT. March 11, 1968 [March 14, 1967], No. 11840/67. Heading G1N. Apparatus for determining the direction of a magnetic field comprises a slotted cylindrical conductive member 1, Fig. 1 rotated about its longitudinal axis by air thrust at air bearings 3, 4, whereby the member acts as a single turn coil and an induced current flows round the slot to produce an alternating magnetic field which is sensed by surrounding quadrant coils 5a-5d, to produce AC voltage signals which are used to line up the rotation axis with the field direction. The slot 2 is preferably perpendicular to the axis of the rotor 1. The angular position of the rotation axis when the signals in coils 5a-5d have been eliminated, i.e. when it coincides with the direction of the magnetic field, is measured by known means relative to the vertical and North. The rotating member may have a high permeability core surrounded by a coil whose induced c.m.f. is indicative of the angle between the magnetic field and the axis of rotation. The rotating member may alternatively carry an electromagnet or permanent magnet, with a total-field magnetometer on the rotational axis, which senses when the axial total field strength is constant during rotation, indicating coincidence between the axis of rotation and the direction of the external magnetic field.
GB1184067A 1967-03-14 1967-03-14 Improvements in or relating to the Determination of the Direction of Magnetic Fields. Expired GB1168678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1184067A GB1168678A (en) 1967-03-14 1967-03-14 Improvements in or relating to the Determination of the Direction of Magnetic Fields.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1184067A GB1168678A (en) 1967-03-14 1967-03-14 Improvements in or relating to the Determination of the Direction of Magnetic Fields.

Publications (1)

Publication Number Publication Date
GB1168678A true GB1168678A (en) 1969-10-29

Family

ID=9993660

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1184067A Expired GB1168678A (en) 1967-03-14 1967-03-14 Improvements in or relating to the Determination of the Direction of Magnetic Fields.

Country Status (1)

Country Link
GB (1) GB1168678A (en)

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