基于电磁感应的遥测式三维定位系统  

The Three-dimensional Localization System Based on Electromagnetic Induction

作　　者：郭旭东[1] 颜国正[1] 何文辉[1] 姜萍萍[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《上海交通大学学报》2007年第11期1753-1757,共5页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金(30570485);教育部博士点基金(20040248033);教育部新世纪优秀人才计划(NCET-04-0401)资助项目

摘　　要：为了对全消化道生理参数诊查胶囊在人体内的三维位置进行连续跟踪,提出了基于电磁感应原理的定位新方法.在人的体表布置6个励磁线圈,采用正弦电流分时激励,在空间产生交变磁场,并在诊查胶囊内封装感应线圈.通过获得感应线圈上的感应电动势,结合定位模型和微粒群算法,可反求诊查胶囊的空间方位.实验表明:定位系统工作稳定,获得了较高的定位精度.Implantable micro-capsules can enter into human;s alimentary tract to detect gastrointestinal parameters such as temperature, pressure and pH value. In order to determine the position and orientation of micro-capsule, a novel tracking method based on electromagnetic induction are presented. In this method six excitation coils are mounted on the abdomen of human body. These coils were excited by time-sharing sinusoidal signals to generate alternating fields. Meanwhile, a small induction coil is sealed in the microcapsule to measure the magnitude of the alternating field. According to the localization model and the particle swarm algorithm, the position and orientation can be calculated from the induced electromotive force of the induction coil. The experiments show that the localization system has high precision and good stability.

关 键 词：三维定位 遥测 交流激励 电磁感应 微粒群算法 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置] TM938.82[自动化与计算机技术—控制科学与工程]