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Design and Implementation of Electronic Compass Calibrating Method
Author(s): 
Pages: 46-50
Year: Issue:  1
Journal: Ocean Technology

Keyword:  electronic compasscalibrationVC++ProEssentials;
Abstract: Electronic compass is used to provide the real-time position of the wave buoy. A new calibration system is designed to solve the problems of the electronic compass calibration system with Matlab, like poor portability, complex process and low speed. Analog signals received from the wave height data acquisition system by Max194, the 14 serial A/D converter, are converted into digital signals accessing to micro controller which is responsible for controlling the sampling frequency of azimuth data and A/D conversion chip. Then the serial conversion chip is used to convert outputting level signals into RS232 signals, which is processed by computer.The azimuth data processing is implemented by VC ++ which is expert in interface design and data processing.The error is showed directly by Pro Essentials through drawing sampling data comparison chart and error chart.The Pro Essentials is sound in graphics, superior in processing speed and favorable in portability. Experimental tests show that the electronic compass calibration system has good portability, low power consumption, high stability and fast operating speed. The electronic compass calibration method has been widely applied in the production of wave buoys and 3-m buoys.
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