JPS5776411A - Method and apparatus for correcting output of azimuth detector - Google Patents

Method and apparatus for correcting output of azimuth detector

Info

Publication number
JPS5776411A
JPS5776411A JP15275180A JP15275180A JPS5776411A JP S5776411 A JPS5776411 A JP S5776411A JP 15275180 A JP15275180 A JP 15275180A JP 15275180 A JP15275180 A JP 15275180A JP S5776411 A JPS5776411 A JP S5776411A
Authority
JP
Japan
Prior art keywords
detector
output
azimuth
corrected
crossing
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
JP15275180A
Other languages
Japanese (ja)
Other versions
JPS6230569B2 (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
Toyota Jidosha Kogyo KK
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, Toyota Jidosha Kogyo KK filed Critical Toyota Motor Corp
Priority to JP15275180A priority Critical patent/JPS5776411A/en
Publication of JPS5776411A publication Critical patent/JPS5776411A/en
Publication of JPS6230569B2 publication Critical patent/JPS6230569B2/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
    • G01C17/30—Earth-inductor compasses

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)
  • Navigation (AREA)

Abstract

PURPOSE:To find accurate azimuth by finding maximum and minimum detection values obtained by horizontally rotating two terrestrial magnetisum detectors crossing at right angles to each other on the same surface to operate corrected outputs. CONSTITUTION:an azimuth detector 10 built in one of two terrestrial magnetism detectors crossing at right angles to each other on the same surface is rotated horizontally at least once and the output from the detector 10 is applied to a maximum/ minimum output detector 11 and an arithmetic device 12. The output detector 11 finds the maximum value Xmax and the minimum value Xmin during the period commanded by a control device 13 and stores these values in a storage device 14. The arithmetic device 12 executes X'=2AX/(Xmax-Xmin) (where, A is standard gain) by inputting the output X of the azimuth detector 10 to find a corrected output X'. The control device 13 controls the operation of each device and updates data in every specifed period. In the other terrestrial magnetisum detector crossing at right angles with the former detector, corrected output Y'=2AY/(Ymax-Ymin) is found in the same manner. Thus, the influences of magnetic substances arranged cloely are erased, obtaining accurate azimuth from these corrected outputs X' and Y'.
JP15275180A 1980-10-29 1980-10-29 Method and apparatus for correcting output of azimuth detector Granted JPS5776411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15275180A JPS5776411A (en) 1980-10-29 1980-10-29 Method and apparatus for correcting output of azimuth detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15275180A JPS5776411A (en) 1980-10-29 1980-10-29 Method and apparatus for correcting output of azimuth detector

Publications (2)

Publication Number Publication Date
JPS5776411A true JPS5776411A (en) 1982-05-13
JPS6230569B2 JPS6230569B2 (en) 1987-07-03

Family

ID=15547361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15275180A Granted JPS5776411A (en) 1980-10-29 1980-10-29 Method and apparatus for correcting output of azimuth detector

Country Status (1)

Country Link
JP (1) JPS5776411A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5917811U (en) * 1982-07-23 1984-02-03 アルプス電気株式会社 Magnetic direction detection device
JPS5985910A (en) * 1982-11-09 1984-05-18 Nippon Telegr & Teleph Corp <Ntt> Magnetic field vector detecting system
JPS59125082A (en) * 1982-12-29 1984-07-19 Alps Electric Co Ltd Magnetic azimuth detecting device
US4616424A (en) * 1984-09-13 1986-10-14 Hitachi Metals, Ltd. Magnetic direction sensor
US4698912A (en) * 1985-12-11 1987-10-13 The Laitram Corporation Magnetic compass calibration

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6035851U (en) * 1983-08-19 1985-03-12 旭フアイバ−グラス株式会社 Indoor assembled soundproof room

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6035851U (en) * 1983-08-19 1985-03-12 旭フアイバ−グラス株式会社 Indoor assembled soundproof room

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5917811U (en) * 1982-07-23 1984-02-03 アルプス電気株式会社 Magnetic direction detection device
JPS5985910A (en) * 1982-11-09 1984-05-18 Nippon Telegr & Teleph Corp <Ntt> Magnetic field vector detecting system
JPS59125082A (en) * 1982-12-29 1984-07-19 Alps Electric Co Ltd Magnetic azimuth detecting device
US4616424A (en) * 1984-09-13 1986-10-14 Hitachi Metals, Ltd. Magnetic direction sensor
US4698912A (en) * 1985-12-11 1987-10-13 The Laitram Corporation Magnetic compass calibration

Also Published As

Publication number Publication date
JPS6230569B2 (en) 1987-07-03

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