| 基于HMC1022磁阻传感器的数字电子罗盘的设计与实现 |
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| 引用本文： | 王丽颖,支炜,孙红霞,张伟. 基于HMC1022磁阻传感器的数字电子罗盘的设计与实现[J]. 电子测量技术, 2009, 0(1): 108-111 |
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| 作者姓名： | 王丽颖 支炜 孙红霞 张伟 |
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| 作者单位： | 大连交通大学机械工程学院,大连,116028;大连交通大学机械工程学院,大连,116028;大连交通大学机械工程学院,大连,116028;大连交通大学机械工程学院,大连,116028 |
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| 摘 要： | 基于地磁测量原理设计的数字式电子罗盘由微控制器实现角度换算与输出，具有体积小、启动快、功耗低、成本低等优点。磁阻传感器两轴输出的差分信号转换均由16位A／D直接完成，省去电路中复杂的运算放大器部分。利用磁阻芯片独特的置位复位功能，有效地消除因温度漂移和电路参数漂移等共模信号造成的误差，精度可以精确到1°。
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| 关 键 词： | 地磁场 电子罗盘 磁阻传感器 微控制器 |
Design and realization of digital electronic compass based on magnetoresistance sensors |
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| Wang Liying,Zhi Wei,Sun Hongxia,Zhang Wei. Design and realization of digital electronic compass based on magnetoresistance sensors[J]. Electronic Measurement Technology, 2009, 0(1): 108-111 |
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| Authors: | Wang Liying Zhi Wei Sun Hongxia Zhang Wei |
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| Affiliation: | School of Mechanical Engineering;Dalian Jiaotong University;Dalian 116028 |
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| Abstract: | The digital Electronic compass based on geomagnetism measurement has the characteristics with very small size,low power consumption and starting up quickly.16-bit A/D converter converses directly the differential signal,which from the two-axis of sensor outputs,so it make the complex operational amplifiers in the circuit easy.Moreover,the SET/RESET function of HMC1021can eliminate efficiently offset and temperature effect introduced by the electronics as well as the bridge temperature drift.Accuracy is up t... |
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| Keywords: | geomagnetism electronic compass magnetoresistance sensors microcontroller |
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