JPS57127807A - Method and device for correcting output for azimuth detector - Google Patents

Method and device for correcting output for azimuth detector

Info

Publication number
JPS57127807A
JPS57127807A JP1400681A JP1400681A JPS57127807A JP S57127807 A JPS57127807 A JP S57127807A JP 1400681 A JP1400681 A JP 1400681A JP 1400681 A JP1400681 A JP 1400681A JP S57127807 A JPS57127807 A JP S57127807A
Authority
JP
Japan
Prior art keywords
outputs
detection elements
azimuth detector
correction
magnetic
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
JP1400681A
Other languages
Japanese (ja)
Other versions
JPS6230570B2 (en
Inventor
Kazuo Sato
Shiro Kawamura
Ken Kawahashi
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor 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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP1400681A priority Critical patent/JPS57127807A/en
Publication of JPS57127807A publication Critical patent/JPS57127807A/en
Publication of JPS6230570B2 publication Critical patent/JPS6230570B2/ja
Granted legal-status Critical Current

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
    • G01C17/02—Magnetic compasses
    • G01C17/28—Electromagnetic compasses

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To permit simple and accurate correction with respect to magnetic fields other than the earth magnetism by a method wherein a pair of two magnetic detectors for detecting each magnetism with a phase angle of 90 deg. are rotated on a certain plane and outputs therefrom are sampled three times and then processed. CONSTITUTION:An azimuth detector including a pair of two magnetic detection elements adapted to detect earth magnetim with a phase angle of 90 deg. on the same plane is rotated on a certain plane. Based on simultaneous equations with respect to correction amounts Xd, Yd and outputs X1-3, Y1-3 obtained from both the detection elements at the times of arbitrary three samplings, Xd and Yd are determined. For example, outputs X, Y from two magnetic detection elements of an azimuth detector 10 are digitalized through a multiplexer 12 and and A/D converter 13. In an arithmetic unit 14 the following simultaneous equations are solved; (X1-Xd)<2>+(Y1-Yd)<2>=(X2-Xd)<2>+Y2- Yd)<2>, (X2-Xd)<2>+(Y-Yd)<2>=(X3- Xd)<2>+(Y3-Yd)<2>, thereby to determine correction amouns Xd and Yd. The outputs X, Y are processed based on these correction amounts.
JP1400681A 1981-02-02 1981-02-02 Method and device for correcting output for azimuth detector Granted JPS57127807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1400681A JPS57127807A (en) 1981-02-02 1981-02-02 Method and device for correcting output for azimuth detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1400681A JPS57127807A (en) 1981-02-02 1981-02-02 Method and device for correcting output for azimuth detector

Publications (2)

Publication Number Publication Date
JPS57127807A true JPS57127807A (en) 1982-08-09
JPS6230570B2 JPS6230570B2 (en) 1987-07-03

Family

ID=11849120

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1400681A Granted JPS57127807A (en) 1981-02-02 1981-02-02 Method and device for correcting output for azimuth detector

Country Status (1)

Country Link
JP (1) JPS57127807A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5834314A (en) * 1981-08-24 1983-02-28 Nippon Soken Inc Bearing detector
JPS5928679A (en) * 1982-08-11 1984-02-15 Honda Motor Co Ltd Dagausser for vehicle
JPS5985910A (en) * 1982-11-09 1984-05-18 Nippon Telegr & Teleph Corp <Ntt> Magnetic field vector detecting system
US6539639B2 (en) * 2000-12-06 2003-04-01 Honeywell International Inc. Monitoring accuracy of an electronic compass

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116211A (en) * 1981-01-09 1982-07-20 Mitsubishi Electric Corp Measuring device for direction

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116211A (en) * 1981-01-09 1982-07-20 Mitsubishi Electric Corp Measuring device for direction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5834314A (en) * 1981-08-24 1983-02-28 Nippon Soken Inc Bearing detector
JPS5928679A (en) * 1982-08-11 1984-02-15 Honda Motor Co Ltd Dagausser for vehicle
JPS5985910A (en) * 1982-11-09 1984-05-18 Nippon Telegr & Teleph Corp <Ntt> Magnetic field vector detecting system
JPH04201B2 (en) * 1982-11-09 1992-01-06 Nippon Denshin Denwa Kk
US6539639B2 (en) * 2000-12-06 2003-04-01 Honeywell International Inc. Monitoring accuracy of an electronic compass

Also Published As

Publication number Publication date
JPS6230570B2 (en) 1987-07-03

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