MAGNETIC SENSOR AND SENSITIVITY MEASURING METHOD THEREOF
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United States of America Patent
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Jul 14, 2015
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Mar 23, 2007
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Abstract
The present invention relates to a magnetic sensor with a sensitivity measuring function and a method thereof. Magnetic sensitivity elements detect flux density, and a switching unit extracts magnetic field intensity information of each axis, and inputs it to a sensitivity calculating unit. The sensitivity calculating unit calculates the sensitivity from the magnetic field intensity information about the individual axes from the magnetic sensitivity elements. The sensitivity calculating unit includes an axial component analyzing unit for analyzing the flux density from the magnetic sensitivity elements into magnetic components of the individual axes; a sensitivity decision unit for deciding the sensitivity by comparing the individual axial components of the magnetic field intensity from the axial component analyzing unit with a reference value; and a sensitivity correction unit for carrying out sensitivity correction in accordance with the sensitivity information from the sensitivity decision unit.
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