Title: Method of compensating tilt using two-axis geomagnetic sensor and acceleration sensor, and apparatus thereof
Application Number: 200510132830 Application Date: 2005.12.22
Publication Number: 1854763 Publication Date: 2006.11.01
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01V3/00,G01C17/38
Applicant(s) Name: Samsung Electro Mech Address:
Inventor(s) Name: Kwon Oh-jo, Choi Won-tae
Attorney & Agent: li wei
Abstract:
     The present invention relates to a method of compensating tilt using a two-axis geomagnetic sensor (100) and an acceleration sensor (200) and an apparatus. Using the principle where a geomagnetic field value measured in a state where one axis of the two-axis geomagnetic sensor is set up vertically is identical to a Z-axis geomagnetic field value, the Z-axis geomagnetic field value can be evaluated by using two axes of the two-axis geomagnetic sensor. Accordingly, an azimuth angle can be easily calculated, so that the azimuth angle changed by tilt can be compensated. Therefore, there is an effect that a constant azimuth can be always output even though tilt occurs. In addition, when a module of the two-axis geomagnetic sensor and the acceleration sensor is used in a mobile equipment, the two-axis geomagnetic sensor can automatically measure geomagnetic field values of three axes by a simple motion where a user vertically sets up or rotates up and down the mobile equipment. Therefore, there is an effect that a constant azimuth angle can be always output by compensating the azimuth angle changed by tilt.
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