基于永磁磁场的电子胶囊定位系统  

Localization System for Electrical Capsule Based on Permanent Magnetic Field

作　　者：王坤东[1] 颜国正[1] 姜萍萍[1] 何文辉[1] 郭旭东[1] 

机构地区：[1]上海交通大学仪器工程系,上海200240

出　　处：《生物医学工程学杂志》2007年第5期1148-1151,共4页Journal of Biomedical Engineering

基　　金：国家高技术研究发展计划资助项目(2004AA404013);国家自然科学基金资助项目(30270382)

摘　　要：为了确定可吞服式电子胶囊在人体内的位置,基于矩形永磁体空间磁场解析式,设计了定位系统,提出了相应的定位算法,并进行了实验。系统中两个三轴磁传感器封装在胶囊内,由胶囊和永磁体的空间位姿关系模型,建立了与传感器输出和胶囊位姿变量相关的一组非线性方程。对方程进行了数值求解,并和期望值进行了比较,结果发现该方法是切实可行的。Localization system was designed based on analytic equation of permanent magnetic field to localize the swallowing electrical capsule in the gastrointestinal. Algorithm was presented and experiment was made. Two three-axis magnetism sensors were mounted in the capsule. The non linear equations set of sensor＇s output and capsule＇s position and attitude was created according to space position and attitude relationship model. The equations set was resolved with numerical method. Comparison between the calculation value and expected value showed that this method was feasible

关 键 词：电子胶囊 定位 永磁磁场 

分 类 号：TH789[机械工程—仪器科学与技术]