发明名称 |
Electronic compass and direction finding method |
摘要 |
An electronic compass and direction finding method includes a geomagnetic direction sensor having two sensor elements for detecting perpendicular components of the Earth's magnetic field vector. A microcomputer is coupled to the geomagnetic direction sensor to compute a heading of a vehicle in software. Even if the electronic compass displays directional errors due to magnetization of the vehicle, a center of an azimuth circle can be immediately corrected by a center calculating means and a relatively accurate heading can be displayed. Later, the center of the azimuth circle can be corrected with a higher accuracy by a least squares calculating means. This frees a vehicle driver from uneasiness due to display of an intelligible direction.
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申请公布号 |
US2006190174(A1) |
申请公布日期 |
2006.08.24 |
申请号 |
US20060359574 |
申请日期 |
2006.02.23 |
申请人 |
AICHI MICRO INTELLIGENT CORPORATION |
发明人 |
LI XUEPING;AOYAMA HITOSHI;HONKURA YOSHINOBU;KAKO EIJI;TSUCHIDA KATSUHIKO |
分类号 |
G01C17/38 |
主分类号 |
G01C17/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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