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Geomagnetic sensor and azimuth calculation method thereof

A technology of geomagnetic sensor and acceleration sensor, which is applied in the field of geomagnetic sensor and its azimuth angle calculation method and medium, and can solve the problems of azimuth angle calculation error and poor compensation of azimuth angle, etc.

Inactive Publication Date: 2007-05-30
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology

[0007] Therefore, if an error occurs in the calculated pitch and roll values, the azimuth is not well compensated so that the azimuth itself is calculated incorrectly

Method used

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  • Geomagnetic sensor and azimuth calculation method thereof
  • Geomagnetic sensor and azimuth calculation method thereof
  • Geomagnetic sensor and azimuth calculation method thereof

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Embodiment Construction

[0032] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The exemplary embodiments are described below to explain the present invention by referring to the figures.

[0033] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0034] FIG. 1 is a block diagram showing the configuration of a geomagnetic sensor according to an exemplary embodiment of the present invention. According to FIG. 1 , the geomagnetic sensor 100 includes a geomagnetic measurement module 110 , an inclination measurement module 120 , an inclination calculator 130 and a controller 140 .

[0035] The geomagnetism measurement module 110 outputs a voltage value corresponding to the external geomagnetism. In detail, the geomagnetic measurement module 110 may ...

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Abstract

A geomagnetic sensor with 3-axis acceleration sensors is provided. The geomagnetic sensor a geomagnetic measurement module including flux gates of X, Y and Z axes mutually crossing at right angles, a tilt measurement module including acceleration sensors of X, Y and Z axes mutually crossing at right angles, a tilt calculator primarily calculating a pitch angle and a roll angle using output values of each acceleration sensors of the X and Y axes, and performing second calculation by adjusting at least one of the primarily calculated pitch angle and roll angle using an output value of the acceleration sensor of the Z axis, and a controller calculating an azimuth using the readjusted pitch angle and roll angle and an output value of the geomagnetic measurement module. Accordingly, the pitch angle and roll angle are precisely measured to calculate the azimuth.

Description

technical field [0001] The invention relates to a geomagnetic sensor and its azimuth calculation method and medium. More particularly, the present invention relates to a geomagnetic sensor and its azimuth calculation method and medium, which utilize a 3-axis acceleration sensor to accurately calculate pitch angle and roll angle according to the area, Thus the azimuth angle is calculated. Background technique [0002] A geomagnetic sensor is a device that measures the strength and direction of geomagnetism, which humans cannot feel. More specifically, a sensor that uses a fluxgate to measure geomagnetism is called a fluxgate geomagnetic sensor. [0003] A fluxgate geomagnetic sensor is a device that, by using a high-permeability material such as permalloy as a magnetic core, adds an exciting magnetic field through a coil wound around the magnetic core, and then measures the first magnetic field proportional to the external magnetic field. The second...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/40
CPCG01C17/38G01C17/30
Inventor 李宇钟崔相彦
Owner SAMSUNG ELECTRONICS CO LTD
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