JPS5720606A - Magnetic azimuth meter with magnetic field distortion correction device - Google Patents
Magnetic azimuth meter with magnetic field distortion correction deviceInfo
- Publication number
- JPS5720606A JPS5720606A JP9597280A JP9597280A JPS5720606A JP S5720606 A JPS5720606 A JP S5720606A JP 9597280 A JP9597280 A JP 9597280A JP 9597280 A JP9597280 A JP 9597280A JP S5720606 A JPS5720606 A JP S5720606A
- Authority
- JP
- Japan
- Prior art keywords
- detectors
- magnetic
- correction device
- distortion correction
- terrestrial magnetism
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
PURPOSE:To improve sensitivity, to make the tilted meter mechanically robust, and to perform always correct measurement by using a combination of concentrators and Hall elements as detectors for the terrestrial magnetism. CONSTITUTION:The azimuth meter is constituted of detectors 10 and 20, adjusting circuits 30 and 40, amplifiers 50 and 60, a calculating circuit 70, a changeover switch 80 and an indicator 90. The detectors 10 and 20 are constituted by combining concentrators and Hall elements, and the circuits 30 and 40 both erase disturbing magnetic outputs and output only the outputs by the terrestrial magnetism. The circuit 70 derives the output proportional to the azimuth angle of the terrestrial magnetism and applies this to the indicator 90.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9597280A JPS5720606A (en) | 1980-07-14 | 1980-07-14 | Magnetic azimuth meter with magnetic field distortion correction device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9597280A JPS5720606A (en) | 1980-07-14 | 1980-07-14 | Magnetic azimuth meter with magnetic field distortion correction device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5720606A true JPS5720606A (en) | 1982-02-03 |
Family
ID=14152085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9597280A Pending JPS5720606A (en) | 1980-07-14 | 1980-07-14 | Magnetic azimuth meter with magnetic field distortion correction device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5720606A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62191715A (en) * | 1986-02-19 | 1987-08-22 | Jeco Co Ltd | Method for correcting disturbance of azimuth meter |
US9988217B2 (en) | 2014-11-10 | 2018-06-05 | The Yokohama Rubber Co., Ltd. | Conveyor belt wear monitoring system |
-
1980
- 1980-07-14 JP JP9597280A patent/JPS5720606A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62191715A (en) * | 1986-02-19 | 1987-08-22 | Jeco Co Ltd | Method for correcting disturbance of azimuth meter |
US9988217B2 (en) | 2014-11-10 | 2018-06-05 | The Yokohama Rubber Co., Ltd. | Conveyor belt wear monitoring system |
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