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Geomagnetic sensor for computing azimuth and method thereof

A geomagnetic sensor and azimuth technology, applied in the field of geomagnetic sensors, can solve problems such as difficult azimuth compensation work

Inactive Publication Date: 2007-05-30
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The problem with the above-mentioned conventional geomagnetic sensor is that the geomagnetic sensor is shaken multiple times in different directions to perform azimuth compensation work
For this reason, it is difficult to make the azimuth compensation work more convenient

Method used

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  • Geomagnetic sensor for computing azimuth and method thereof
  • Geomagnetic sensor for computing azimuth and method thereof
  • Geomagnetic sensor for computing azimuth and method thereof

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Embodiment Construction

[0041] Exemplary embodiments of the present invention will now be described in detail, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like parts throughout. The embodiments are described in detail below in order to explain the present invention by referring to the figures.

[0042] FIG. 1 is a block diagram showing a geomagnetic sensor according to an embodiment of the present invention.

[0043] The geomagnetic sensor shown in FIG. 1 includes: a geomagnetic sensor module 110 , an inclination sensor module 120 , an operation module 130 and a control module 140 .

[0044] The geomagnetic sensor module 110 is used to output an electrical signal whose magnitude corresponds to geomagnetism. Specifically, the geomagnetic sensor module 110 may include X-axis, Y-axis and Z-axis fluxgates that are perpendicular to each other. In this case, the geomagnetic sensor module 110 applies the electric signal to each axis fluxgate to ...

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Abstract

A geomagnetic sensor for computing an azimuth and a method thereof. The geomagnetic sensor includes a geomagnetic sensor module, including X, Y and Z axis fluxgates orthogonal to one another, for performing normalization for mapping output values of the X, Y and Z axis fluxgates onto a previously set normalization range using previously set normalization factors, an operation module for performing operation of new normalization factors based on a plurality of normalization values output from the geomagnetic sensor module when the geomagnetic sensor is swung within a previously set range, a tilt sensor module for computing a pitch angle and a roll angle, and a control module for providing the new normalization factors to the geomagnetic sensor module to allow the geomagnetic sensor module to perform renormalization and computing an azimuth using the output values renormalized by the geomagnetic sensor module and the pitch and roll angles computed during the renormalization. Thereby, the azimuth compensatory normalization factors can be calculate easily.

Description

technical field [0001] The present invention relates to a geomagnetic sensor for calculating an azimuth and a method thereof, more particularly, to a geomagnetic sensor for compensating an azimuth and a method thereof for simply calculating a normalization factor to compensate the azimuth. Background technique [0002] The geomagnetic sensor is used to sense the strength of geomagnetism and its direction which cannot be sensed by humans. In particular, a sensor that senses geomagnetism using a fluxgate is called a fluxgate type geomagnetic sensor. [0003] Fluxgate geomagnetic sensors use materials with high magnetic permeability, such as permalloy, as the magnetic core. The fluxgate type geomagnetic sensor generates an excitation magnetic field by winding a driving coil of a magnetic core, and senses the magnitude and direction of the external magnetic field by sensing a secondary high-frequency component proportional to the external magnetic field due to It is caused by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/40
CPCG01C17/38G01R33/04
Inventor 李宇钟崔相彦
Owner SAMSUNG ELECTRONICS CO LTD
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