DE3120317C2 - - Google Patents

Info

Publication number
DE3120317C2
DE3120317C2 DE3120317A DE3120317A DE3120317C2 DE 3120317 C2 DE3120317 C2 DE 3120317C2 DE 3120317 A DE3120317 A DE 3120317A DE 3120317 A DE3120317 A DE 3120317A DE 3120317 C2 DE3120317 C2 DE 3120317C2
Authority
DE
Germany
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
DE3120317A
Other versions
DE3120317A1 (de
Inventor
Muneaki Okazaki Jp Matsumoto
Akira Oobu Jp Kuno
Koji Toyokawa Jp Numata
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.)
Soken Inc
Original Assignee
Nippon Soken Inc
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 Nippon Soken Inc filed Critical Nippon Soken Inc
Publication of DE3120317A1 publication Critical patent/DE3120317A1/de
Application granted granted Critical
Publication of DE3120317C2 publication Critical patent/DE3120317C2/de
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)
DE19813120317 1980-05-23 1981-05-21 "richtungsanzeiger" Granted DE3120317A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1980071553U JPS6035851Y2 (ja) 1980-05-23 1980-05-23 方位検知装置

Publications (2)

Publication Number Publication Date
DE3120317A1 DE3120317A1 (de) 1982-02-18
DE3120317C2 true DE3120317C2 (de) 1987-03-05

Family

ID=13464033

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813120317 Granted DE3120317A1 (de) 1980-05-23 1981-05-21 "richtungsanzeiger"

Country Status (3)

Country Link
US (1) US4399615A (de)
JP (1) JPS6035851Y2 (de)
DE (1) DE3120317A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5729966A (en) * 1980-07-30 1982-02-18 Nippon Soken Inc Magnetic field measuring device
JPS6212976Y2 (de) * 1980-10-20 1987-04-03
US4497034A (en) * 1981-08-05 1985-01-29 Nippon Soken, Inc. Heading detecting apparatus
JPS5897707A (ja) * 1981-12-07 1983-06-10 Nippon Soken Inc 車両走行の帰路表示装置
JPS5924260A (ja) * 1982-07-31 1984-02-07 Saura Keiki Seisakusho:Kk マグネツトメ−タの設定方向測定方式
JPS59116068A (ja) * 1982-12-22 1984-07-04 Hitachi Metals Ltd 方位センサ−
US4797841A (en) * 1983-11-28 1989-01-10 Magnavox Government And Industrial Electronics Company Method and apparatus for automatic calibration of magnetic compass
US4611293A (en) * 1983-11-28 1986-09-09 Magnavox Government And Industrial Electronics Company Method and apparatus for automatic calibration of magnetic compass
JPH01214710A (ja) * 1988-02-23 1989-08-29 Alps Electric Co Ltd 方位計測方法およびその装置
US5602472A (en) * 1993-01-15 1997-02-11 Hughes Electronics Apparatus and method for determining angular position and rotational speed using a rotating magnet and a directional magnetometer

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2852859A (en) * 1958-09-23 A-axis
US3903610A (en) * 1972-08-18 1975-09-09 North Atlantic Industries Apparatus for measuring magnetic field direction
US3905121A (en) * 1973-02-28 1975-09-16 Tokai Rika Co Ltd Device for indicating a direction on the earth{3 s surface
US3952420A (en) * 1974-08-05 1976-04-27 E-Systems, Inc. Digital solid state compass
DE2651678C2 (de) * 1976-11-12 1986-05-22 Teldix Gmbh, 6900 Heidelberg Kursmeßgerät für ein Fahrzeug
DE2929504C2 (de) * 1978-07-21 1984-05-10 Mitsubishi Denki K.K., Tokio/Tokyo Richtungsweiservorrichtung
JPS5565165A (en) * 1978-11-10 1980-05-16 Mitsubishi Electric Corp Angle sensor
US4277751A (en) * 1978-09-29 1981-07-07 Neil Brown Instruments Systems, Inc. Low-power magnetometer circuit with constant current drive
JPS5562308A (en) * 1978-11-02 1980-05-10 Mitsubishi Electric Corp Direction indicating device
US4267640A (en) * 1979-04-30 1981-05-19 Rca Corporation System for ascertaining magnetic field direction
US4262427A (en) * 1979-08-10 1981-04-21 Sperry Corporation Flux valve compass system

Also Published As

Publication number Publication date
JPS56172710U (de) 1981-12-19
JPS6035851Y2 (ja) 1985-10-24
US4399615A (en) 1983-08-23
DE3120317A1 (de) 1982-02-18

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee