JPS5555212A - Magnet compass - Google Patents
Magnet compassInfo
- Publication number
- JPS5555212A JPS5555212A JP12727078A JP12727078A JPS5555212A JP S5555212 A JPS5555212 A JP S5555212A JP 12727078 A JP12727078 A JP 12727078A JP 12727078 A JP12727078 A JP 12727078A JP S5555212 A JPS5555212 A JP S5555212A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- signals
- elements
- synchronous
- detection elements
- 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
Links
Landscapes
- Measuring Magnetic Variables (AREA)
Abstract
PURPOSE: To provide an apparatus with an excellent vibration resistance which allows the lamp indication of direction by a synchronous tuning with a frequency twice as large as the excited wave following a constant-frequency excitation of two magnetic detection elements for earth magnetism and other operations with the two elements arranged parpendicular to each other.
CONSTITUTION: Two magnetic detection elements 1 and 2 are arranged parpendicular to each other. The elements are excited with a constant frequency f and the outputs of the detection element undergo synchronous tunings 10 and 11 with a frequency 2f twice as large as the excited wave. On the other hand, an addition and a substraction processing 13 are given in n stages at least one of the signals between the levels before and after the synchronous tunings thereby obtaining 2n+1 of DC signals in which changes in positive and negative level are caused by π/2n+1 in phase with respect to the angle of rotation of the detection elements between the earth magnetism. The output states numbering 2n+2 previously set are detected on 2n+1 of the signals and one output signal is generated for each terminal connected to corresponding separate direction indicators 17 numbering 2n+2. Thus, lamps of indicators are lighted.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12727078A JPS5555212A (en) | 1978-10-18 | 1978-10-18 | Magnet compass |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12727078A JPS5555212A (en) | 1978-10-18 | 1978-10-18 | Magnet compass |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5555212A true JPS5555212A (en) | 1980-04-23 |
JPS612163B2 JPS612163B2 (en) | 1986-01-23 |
Family
ID=14955841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12727078A Granted JPS5555212A (en) | 1978-10-18 | 1978-10-18 | Magnet compass |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5555212A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5844310A (en) * | 1981-09-10 | 1983-03-15 | Furuno Electric Co Ltd | Repeater device for magnet compass |
JPS60178312A (en) * | 1984-02-25 | 1985-09-12 | Tohoku Metal Ind Ltd | Magnetic compass |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01170106U (en) * | 1988-05-19 | 1989-12-01 |
-
1978
- 1978-10-18 JP JP12727078A patent/JPS5555212A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5844310A (en) * | 1981-09-10 | 1983-03-15 | Furuno Electric Co Ltd | Repeater device for magnet compass |
JPS60178312A (en) * | 1984-02-25 | 1985-09-12 | Tohoku Metal Ind Ltd | Magnetic compass |
Also Published As
Publication number | Publication date |
---|---|
JPS612163B2 (en) | 1986-01-23 |
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