JPS56147086A - Flux gate type magnetic sensor - Google Patents

Flux gate type magnetic sensor

Info

Publication number
JPS56147086A
JPS56147086A JP5067780A JP5067780A JPS56147086A JP S56147086 A JPS56147086 A JP S56147086A JP 5067780 A JP5067780 A JP 5067780A JP 5067780 A JP5067780 A JP 5067780A JP S56147086 A JPS56147086 A JP S56147086A
Authority
JP
Japan
Prior art keywords
coil
magnetic field
core
current
magnetic sensor
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.)
Pending
Application number
JP5067780A
Other languages
Japanese (ja)
Inventor
Fumio Yamauchi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5067780A priority Critical patent/JPS56147086A/en
Publication of JPS56147086A publication Critical patent/JPS56147086A/en
Pending 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
    • G01R33/04—Measuring direction or magnitude of magnetic fields or magnetic flux using the flux-gate principle
    • G01R33/045—Measuring direction or magnitude of magnetic fields or magnetic flux using the flux-gate principle in single-, or multi-aperture elements

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To increase greatly the range of measurement, by adding a magnetic field compensating coil and then applying the current to the said coil to cancel an external magnetic field which is caused to the core. CONSTITUTION:Both the drive coil 2 and the sensor coil 3 are wound around a ring-shaped core 1, and furthermore the magnetic field compensating coil 4 is wound in the same direction as each coil. Then the AC current is applied to the coil 2 by the oscillator 5, and the output of the coil 2 is applied to the current control circuit 9 via the amplifier 6, BPF7 and amplifier 8. The output of the circuit 9 is applied to the coil 4 to generate the magnetic field in the direction where an external magnetic field of the core 1 is canceled. At the same time, the current value of the coil 4 is read through the meter 11 to measure the magnetic field intensity. With addition of such coil 4, the saturation is avoided for the core 1 to increase greatly the range of measurement.
JP5067780A 1980-04-16 1980-04-16 Flux gate type magnetic sensor Pending JPS56147086A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5067780A JPS56147086A (en) 1980-04-16 1980-04-16 Flux gate type magnetic sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5067780A JPS56147086A (en) 1980-04-16 1980-04-16 Flux gate type magnetic sensor

Publications (1)

Publication Number Publication Date
JPS56147086A true JPS56147086A (en) 1981-11-14

Family

ID=12865561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5067780A Pending JPS56147086A (en) 1980-04-16 1980-04-16 Flux gate type magnetic sensor

Country Status (1)

Country Link
JP (1) JPS56147086A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60168294A (en) * 1984-02-13 1985-08-31 高根　重信 Crime preventor
JPS63113389A (en) * 1986-10-30 1988-05-18 Shimadzu Corp Metal detector
JPH01126576A (en) * 1987-11-11 1989-05-18 Meguro Denki Seizo Kk Magnetic field detector
JPH01135377U (en) * 1988-02-29 1989-09-18
EP2378306A1 (en) * 2010-03-31 2011-10-19 Japan Aviation Electronics Industry Limited Multi-axis fluxgate magnetic sensor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60168294A (en) * 1984-02-13 1985-08-31 高根　重信 Crime preventor
JPS63113389A (en) * 1986-10-30 1988-05-18 Shimadzu Corp Metal detector
JPH01126576A (en) * 1987-11-11 1989-05-18 Meguro Denki Seizo Kk Magnetic field detector
JPH01135377U (en) * 1988-02-29 1989-09-18
EP2378306A1 (en) * 2010-03-31 2011-10-19 Japan Aviation Electronics Industry Limited Multi-axis fluxgate magnetic sensor
US8669763B2 (en) 2010-03-31 2014-03-11 Japan Aviation Electronics Industry Limited Multi-axis fluxgate magnetic sensor

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