Geomagnetic sensor for informing users whether detected azimuth angle is acceptable, and a method thereof
First Claim
1. A geomagnetic sensor, comprising:
- a geomagnetism detection module including an X axis fluxgate comprising a first magnetic core and a Y axis fluxgate comprising a second magnetic core and detecting a geomagnetism of the X axis fluxgate when the X axis fluxgate is driven by a first signal and a geomagnetism of the Y axis fluxgate when the Y axis is driven by a second signal;
a signal processing unit for converting signal outputs from the geomagnetism detection module to X axis and Y axis output values; and
a control unit for determining whether the output values of the X and Y axes are distorted, and providing a warning message upon determination that at least one of the output values is distorted.
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Abstract
A geomagnetic sensor which informs a user that information with respect to a distorted azimuth angle may be detected. The geomagnetic sensor includes a geomagnetism detection module including an X axis fluxgate and a Y axis fluxgate orthogonal to each other and detecting a predetermined amount of electrical signals corresponding to a geomagnetism of each of the fluxgates; a signal processing unit for converting the electrical signal output from the geomagnetism detection module to predetermined X axis and Y axis output values and outputting them; a display unit for displaying a predetermined warning message on a screen; and a control unit for determining whether the output values of the X and Y axes are distorted, and controlling the display unit to display the predetermined warning message upon determination that the output values are distorted. Accordingly, the possibility of a distorted azimuth angle may be detected and informed to a user.
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Citations
17 Claims
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1. A geomagnetic sensor, comprising:
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a geomagnetism detection module including an X axis fluxgate comprising a first magnetic core and a Y axis fluxgate comprising a second magnetic core and detecting a geomagnetism of the X axis fluxgate when the X axis fluxgate is driven by a first signal and a geomagnetism of the Y axis fluxgate when the Y axis is driven by a second signal; a signal processing unit for converting signal outputs from the geomagnetism detection module to X axis and Y axis output values; and a control unit for determining whether the output values of the X and Y axes are distorted, and providing a warning message upon determination that at least one of the output values is distorted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for measuring an azimuth angle of a geomagnetic sensor having an X axis fluxgate and a Y axis fluxgate, comprising:
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(a) detecting X axis output values corresponding to a geomagnetism from the X axis fluxgate when the X axis fluxgate is driven by a first signal; (b) determining Y axis output values corresponding to a geomagnetism from the X axis fluxgate when the Y axis fluxgate is driven by a second signal; (c) determining whether the output values of the X and Y axes is distorted; and (d) providing a warning message upon a determination that at least one of the output values of the X and Y axes is distorted. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification