JPS57199969A - Magnetic field measuring device - Google Patents

Magnetic field measuring device

Info

Publication number
JPS57199969A
JPS57199969A JP8727481A JP8727481A JPS57199969A JP S57199969 A JPS57199969 A JP S57199969A JP 8727481 A JP8727481 A JP 8727481A JP 8727481 A JP8727481 A JP 8727481A JP S57199969 A JPS57199969 A JP S57199969A
Authority
JP
Japan
Prior art keywords
signal
magnetic field
waveform
circuit
measuring device
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.)
Granted
Application number
JP8727481A
Other languages
Japanese (ja)
Other versions
JPS6331060B2 (en
Inventor
Hisatsugu Ito
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8727481A priority Critical patent/JPS57199969A/en
Publication of JPS57199969A publication Critical patent/JPS57199969A/en
Publication of JPS6331060B2 publication Critical patent/JPS6331060B2/ja
Granted 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

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

PURPOSE:To obtain stable operation and to improve the precision of magnetic field measurement, by composing a phase shifting circuit of a digital circuit. CONSTITUTION:When the signal f0 of an oscillator 6 has a waveform as shown by (a), a frequency dividing circuit 12 divides the frequency of the signal f0 and outputs a signal fR having a waveform as shown by (b). A flio-flop 13 is connected on binary basis, so when the signal fR has a high level and the signal f0 is inputted, the state is inverted to output a waveform fD shown by (c). Thus, the rising phase of the signals f0 and fR coincide with each other, and they never shift owing to fluctuations of temperature, etc. The output of this circuit is supplied as the energizing signal of a magnetic sensor and used as a reference signal for phase detection, thereby obtaining a high-precision magnetic field measuring device which performs stable operation.
JP8727481A 1981-06-03 1981-06-03 Magnetic field measuring device Granted JPS57199969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8727481A JPS57199969A (en) 1981-06-03 1981-06-03 Magnetic field measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8727481A JPS57199969A (en) 1981-06-03 1981-06-03 Magnetic field measuring device

Publications (2)

Publication Number Publication Date
JPS57199969A true JPS57199969A (en) 1982-12-08
JPS6331060B2 JPS6331060B2 (en) 1988-06-22

Family

ID=13910185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8727481A Granted JPS57199969A (en) 1981-06-03 1981-06-03 Magnetic field measuring device

Country Status (1)

Country Link
JP (1) JPS57199969A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013366A1 (en) * 1990-02-28 1991-09-05 Nippon Kokan Kk Method and apparatus for magnetic detection
EP0604809A2 (en) * 1992-12-31 1994-07-06 Alcatel Standard Electrica, S.A. Magnetic field sensor device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013366A1 (en) * 1990-02-28 1991-09-05 Nippon Kokan Kk Method and apparatus for magnetic detection
EP0604809A2 (en) * 1992-12-31 1994-07-06 Alcatel Standard Electrica, S.A. Magnetic field sensor device
EP0604809A3 (en) * 1992-12-31 1995-05-10 Alcatel Standard Electrica Magnetic field sensor device.
US5530349A (en) * 1992-12-31 1996-06-25 Alcatel Standard Electrica, S.A. Magnetic field sensor device using a flux-gate principle

Also Published As

Publication number Publication date
JPS6331060B2 (en) 1988-06-22

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