传感技术学报Issue(6)：895-899,5.DOI:10.3969/j.issn.1004-1699.2015.06.020
基于隧道磁阻传感器的三维电子罗盘设计∗
Design of a Three-Dimensional Electronic Compass Based on Tunneling Magneto Resistance Sensor
摘要
Abstract
Existing electronic compass is vulnerable to be distracted by the Magnetic Field in external environment, which leads to low accuracy. To solve this problem,a three-dimensional electronic compass is designed based on Tunneling Magneto Resistance sensor and a prototype is made. The error characteristics of compass in a real envi-ronment is studied,and ellipse hypothesis are carried out to compensate the azimuth error after ellipsoid-fitting cor-rection. Through experimental tests,the compensation effect of the ellipse hypothesis method,which compensated az-imuth accuracy of up to 0.85° and effectively reducing 94.81% of the azimuth error. Experimental results show that applying TMR sensor to electronic compass is feasible.关键词
电子罗盘/隧道磁阻传感器/罗差补偿/椭圆拟合Key words
electronic compass/TMR sensor/compensation of magnetic deviation/ellipse fitting分类
信息技术与安全科学引用本文复制引用
王琪,李孟委,王增跃,蒋孝勇,李锡广..基于隧道磁阻传感器的三维电子罗盘设计∗[J].传感技术学报,2015,(6):895-899,5.基金项目
兵科基金项目(622010750516) （622010750516）
总装基金项目(9140A09011313BQ014118) （9140A09011313BQ014118）
山西省攻关项目(20130321014-04) （20130321014-04）
