JPS5673314A - Direction finder - Google Patents
Direction finderInfo
- Publication number
- JPS5673314A JPS5673314A JP15106379A JP15106379A JPS5673314A JP S5673314 A JPS5673314 A JP S5673314A JP 15106379 A JP15106379 A JP 15106379A JP 15106379 A JP15106379 A JP 15106379A JP S5673314 A JPS5673314 A JP S5673314A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- magnetic body
- coil
- terrestrial magnetism
- constitution
- 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
Links
Abstract
PURPOSE: To improve precision by providing part of a magnetic body piercing through a fixed coil with a combined function of generating a synchronous signal and comparing an electromotive force and the phase of a synchronous signal.
CONSTITUTION: A magnetic body 2 is turned axially, piercing through a coil 4. This magnetic body 2 has a wing part 15, 16 and has the passage of terrestrial magnetism converted from horizontal to vertical component and periodically changed in magnitude and direction. Consequently, in the coil 4, an AC electromotive force (a) of the same period as the rotation of an axis 1 generates. Next, two photoelectric switches 9 are provided being deviated 90° from each other centering around a rotary axis 1. On one of the rotary axis 1, a semicircular optical shutter 7 is fixed. Under this arrangement, rectangular waves (b), (c) having a phase deviated 90° are output. Thanks to this constitution, (a) of signals, (a), (b), (c) has a change in the phase on account of the direction of a horizontal component of terrestrial magnetism, although the (b) and (c) have nothing to do with the direction of terrestrial magnetism. Thus it is possible to enhance precision by comparing the phase of (a) with (b), (c).
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15106379A JPS5673314A (en) | 1979-11-20 | 1979-11-20 | Direction finder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15106379A JPS5673314A (en) | 1979-11-20 | 1979-11-20 | Direction finder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5673314A true JPS5673314A (en) | 1981-06-18 |
Family
ID=15510484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15106379A Pending JPS5673314A (en) | 1979-11-20 | 1979-11-20 | Direction finder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5673314A (en) |
-
1979
- 1979-11-20 JP JP15106379A patent/JPS5673314A/en active Pending
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