Title:
移動物体の進行方向の推定方法およびシステム
Document Type and Number:
Japanese Patent JP4170284
Kind Code:
B2
Abstract:
A motion estimation method and system for a mobile body are provided. The method includes: obtaining magnetic field information from compass information of the mobile body; comparing the magnetic field of the mobile body with a predetermined value and determining whether a position of the mobile body belongs to a specific region according to the comparison result; and estimating a direction of the mobile body by determining whether a compass azimuth angle is used for direction estimation of the mobile body according to the determination result. The system, in which a gyro, odometers, and compasses are installed, comprises: a magnetic field calculator calculating the magnitudes of magnetic fields of the mobile body; a magnetic field comparator obtaining differences between the magnitudes of the magnetic fields and the magnitude of the geomagnetic field and comparing the differences with the first threshold value; a geomagnetic region determiner determining whether a position where the mobile body exists belongs to a region where the geomagnetism works according to the comparison result; and a moving direction estimator estimating a moving direction of the mobile body by determining whether or not to use azimuth angles of the compasses for direction estimation of the mobile body according to the determination result.
More Like This:
| JPS5510983 | CARPET FOR PRAYER |
Inventors:
Oo
Roh Kei
Han Yu
Yusuke
Bordilev Sergey
Roh Kei
Han Yu
Yusuke
Bordilev Sergey
Application Number:
JP2004323963A
Publication Date:
October 22, 2008
Filing Date:
November 08, 2004
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO.,LTD.
International Classes:
G01C17/04; G01C17/38; G01C21/00; G01C21/08; G01C21/16; G06F17/10
Domestic Patent References:
| JP11083532A | ||||
| JP61258112A | ||||
| JP4369424A |
Attorney, Agent or Firm:
Morita Suda
Isono Dozo
Isono Dozo