FeiYu Tech FY-AHRS-2000B - Manual (Page 9)

Guilin Feiyu Electronic Technology Co., Ltd
Guilin Feiyu Electronic Technology Co., Ltd http://www.feiyudz.cn [email protected]
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At the main interface of AHRS testing software, you can configure the output serial baud
rate, the output data refresh rate, the output data content, etc, and you also can set the baseline
calibration and the magnetic field calibration of the sensors inside the FY-AHRS-2000B .
6、Magnetic field calibration
FY-AHRS-2000B will be started magnetic compensation calibration procedures once the
installation finished. The magnetic field compensation process in the module's firmware
determines the magnetic field calibration impact of the installation of platform, so even if the
FY-AHRS-2000B is installed on the steel device (for example, a vehicle), it still can provide
accurate readings. FY-AHRS-2000B has the compensation effect only in a limited interference
range. Range value of magnetometer is between minus 100 and plus 100 m-Teslas which is
approximately twice the magnetic force in middle latitude northern hemisphere, If the
disturbance value of the magnetic field more than plus or minus 50 m-Teslas, the magnetometer
could reach saturation and block compensation.
Magnetic compensation function is semi-automatic. Once started, FY-AHRS-2000B will
collect data automatically from every position of the circumference. After completing this work,
the module will calculate the correction factor to compensate for the near magnetic field
abnormalities, and to store the corrected value in the permanent memory. After the compensation
process, the corrected value will be merged into the subsequent azimuth data.