DEVELOPMENT OF ELECTRONIC COMPASS FOR AUTOMOBILE, USING MAGNETORESISTIVE ELEMENTS
These days, a variety of navigation systems have been developed to provide the driver with necessary information such as vehicle location, direction and destination. An electronic compass is being widely used as a component for such navigation systems. Compared with a conventional magnetic compass, an electronic compass has the following advantages: (1) high vibration durability and quick response; (2) easy to calibrate and reliable; and (3) sensor and display units can be separated. The electronic compass, however, is accompanied by two serious subjects: the development of a sensitive geomagnetic sensor, and calibration of direction error due to an unexpectedly magnetized vehicle body. First, a new geomagnetic sensor utilizing magnetoresistive elements (MRE) and magnetic lenses was developed. Next, the magnetic disturbances were clarified and the mechanism of vehicle magnetization defined, thereby establishing a simple calibration technique for such magnetization. As a result, the newly developed electronic compass has been in mass-production since May 1991.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/1560913495
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Supplemental Notes:
- This paper appears in SAE SP-964, "Automotive Display Systems and IVHS".
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Corporate Authors:
Society of Automotive Engineers (SAE)
400 Commonwealth Drive
Warrendale, PA United States 15096 -
Authors:
- Ota, K
- HASHIMOTO, T
- Publication Date: 1993-3
Language
- English
Media Info
- Features: Figures; Photos; References; Tables;
- Pagination: p. 81-89
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Serial:
- SAE Special Publications
- Publisher: Society of Automotive Engineers (SAE)
Subject/Index Terms
- TRT Terms: Automobiles; Calibration; Chemical elements; Compasses; Electromagnetism; Navigation systems; Resistance (Electricity)
- Uncontrolled Terms: Magnetoresistance
- Old TRIS Terms: Geomagnetic sensors
- Subject Areas: Highways; Vehicles and Equipment; I91: Vehicle Design and Safety;
Filing Info
- Accession Number: 00634515
- Record Type: Publication
- ISBN: 1560913495
- Report/Paper Numbers: SAE/SP-93/964, Paper 930455, Paper 930456
- Files: TRIS
- Created Date: Aug 23 1993 12:00AM