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车用磁电子罗盘的研制
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2009-05-30
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介绍了磁电子罗盘的设计。利用自己生产的磁电阻传感器研制了新型的磁电子罗盘。信号调理电路采用交流放大技术，有效解决了磁阻传感器失调及漂移的影响。采用一周标定法实现电子罗盘的自动校准。对所研制的罗盘进行了室外试验，最大罗差小于1°。
关键词：各向异性磁电阻，磁电阻传感器，电子罗盘
Development of Vehicle Magnetic Electronic Compass Li Xisheng, Liu Hongyi, Guo Xiaoxia, Wang Lijin, Wang Shaochun University of Science and Technology Beijing, Beijing, 100083 Abstract: The design of magnetic electronic compass is introduced. Using magnetoresistive sensor made by ourselves, a novel magnetic electronic compass has been developed. In the portion of signal conditioning circuit, AC amplifying technique is involved so that the error due to null and drift of magnetoresistive sensor is minimized. One-circle calibration method is adopted to realize auto-calibration. The maximum of azimuth error is less than 1° in the outdoor test.
Key words: anisotropic magnetoresistance, magnetoresistive sensor, electronic compass
关键词：各向异性磁电阻，磁电阻传感器，电子罗盘
Development of Vehicle Magnetic Electronic Compass Li Xisheng, Liu Hongyi, Guo Xiaoxia, Wang Lijin, Wang Shaochun University of Science and Technology Beijing, Beijing, 100083 Abstract: The design of magnetic electronic compass is introduced. Using magnetoresistive sensor made by ourselves, a novel magnetic electronic compass has been developed. In the portion of signal conditioning circuit, AC amplifying technique is involved so that the error due to null and drift of magnetoresistive sensor is minimized. One-circle calibration method is adopted to realize auto-calibration. The maximum of azimuth error is less than 1° in the outdoor test.
Key words: anisotropic magnetoresistance, magnetoresistive sensor, electronic compass
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