消化道应用微磁囊定位系统抗地磁干扰的补偿方法  

Suppression of Geomagnetic Field Interference in the Magnet Locating System of the Micro-magnetic Capsule Inside the Alimentary Tract

作　　者：方兴[1] 郑小林[1] 彭承琳[1] 侯文生[1] 吴旭东[1] 梁学领[1] 

机构地区：[1]重庆大学生物工程学院,重庆400030

出　　处：《生物医学工程学杂志》2008年第6期1430-1434,共5页Journal of Biomedical Engineering

基　　金：国家863计划项目资助(2006AA04Z343);国家自然科学基金资助项目(30500120);重庆市科委重点项目资助(CSTC2006BA5005)

摘　　要：本研究介绍了一种应用于消化道微磁囊磁定位中的补偿地磁场干扰的方法。该方法通过设置补偿值来标记地磁场的干扰水平,并且用测量值减去补偿值来达到补偿干扰的目的。通过实验表明,该方法可以准确地确定定位背心所处的地磁场干扰水平;三维跟踪轨迹表明,该方法很大程度提高了微磁囊在消化道中定位的准确度。A method for the suppression of geomagnetic field interference is here-in introduced. It is designed for use in the magnet locating system of the engineering-based microcapsule inside the alimentary tract. This method marks the geomagnetic field interference levels by getting the static value. Then subtracting the static value from the dynamic value. The results of the experiment show that the method can assess the geomagnetic field interference levels around the locating waistcoat accurately. And the three-dimensional tracking trajectory shows that the method has greatly improved the accu- racy of the capsule location inside the alimentary tract.

关 键 词：磁定位 地磁场 补偿干扰 

分 类 号：TH789[机械工程—仪器科学与技术]