JPS5745408A - Acoustic type azimuth magnet - Google Patents

Acoustic type azimuth magnet

Info

Publication number
JPS5745408A
JPS5745408A JP12198880A JP12198880A JPS5745408A JP S5745408 A JPS5745408 A JP S5745408A JP 12198880 A JP12198880 A JP 12198880A JP 12198880 A JP12198880 A JP 12198880A JP S5745408 A JPS5745408 A JP S5745408A
Authority
JP
Japan
Prior art keywords
directs
azimuth
magnetic field
elements
sound
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
JP12198880A
Other languages
Japanese (ja)
Inventor
Akihiro Fujimura
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP12198880A priority Critical patent/JPS5745408A/en
Publication of JPS5745408A publication Critical patent/JPS5745408A/en
Pending 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)

Abstract

PURPOSE:To produce sound when this magnet directs an assigned azimuth or an azimuth other than the assigned azimuth and to announce the azimuth to the user by sound by detecting the magnetic field of the earth or the magnetic field of a built-inmagnetic needle by means of two pieces of magnetosensitive elements. CONSTITUTION:An outside box 1 is held in such a way that a dial 2 is held roughly level. When the box 1 directs the north, a core 6 directs the northeast and a core 8 directs the northwest. Both are magnetized to the same intensity by the magnetic field of the earth. The magnetic line of force thereof penetrates through a magnetosensitive element 7 receiving applied voltage from a battery from southwest, and through a magnetosensitive element 9 from southeast; the elements 7, 9 generate the output voltages of the same magnitude. When the output voltages of the elements 7, 9 are equal, the output AC of an AC oscillator flows to a speaker, by which sound is produced.
JP12198880A 1980-09-01 1980-09-01 Acoustic type azimuth magnet Pending JPS5745408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12198880A JPS5745408A (en) 1980-09-01 1980-09-01 Acoustic type azimuth magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12198880A JPS5745408A (en) 1980-09-01 1980-09-01 Acoustic type azimuth magnet

Publications (1)

Publication Number Publication Date
JPS5745408A true JPS5745408A (en) 1982-03-15

Family

ID=14824777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12198880A Pending JPS5745408A (en) 1980-09-01 1980-09-01 Acoustic type azimuth magnet

Country Status (1)

Country Link
JP (1) JPS5745408A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6054910U (en) * 1983-09-22 1985-04-17 株式会社　ワコム compass
JPS6054909U (en) * 1983-09-22 1985-04-17 株式会社　ワコム compass
JPS6068414U (en) * 1983-10-19 1985-05-15 株式会社ワコム compass
JPH03272414A (en) * 1990-03-22 1991-12-04 Takashi Ikeda Bearing meter composed of ic to inform of direction by sound

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49123358A (en) * 1973-03-30 1974-11-26
JPS5267665A (en) * 1975-12-03 1977-06-04 Tokyo Keiki Kk Remote setting warning apparatus for needle deflection
JPS53119596A (en) * 1977-03-29 1978-10-19 Tokyo Keiki Co Ltd Deflection warning device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49123358A (en) * 1973-03-30 1974-11-26
JPS5267665A (en) * 1975-12-03 1977-06-04 Tokyo Keiki Kk Remote setting warning apparatus for needle deflection
JPS53119596A (en) * 1977-03-29 1978-10-19 Tokyo Keiki Co Ltd Deflection warning device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6054910U (en) * 1983-09-22 1985-04-17 株式会社　ワコム compass
JPS6054909U (en) * 1983-09-22 1985-04-17 株式会社　ワコム compass
JPS6068414U (en) * 1983-10-19 1985-05-15 株式会社ワコム compass
JPH03272414A (en) * 1990-03-22 1991-12-04 Takashi Ikeda Bearing meter composed of ic to inform of direction by sound

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