title: [Localization system for electrical capsule based on permanent magnetic field].
abstract: 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.
authors.affiliation: Department of Instrument Engineering, Shanghai Jiaotong University, Shanghai 200240, China. kdwang@sjtu.edu.cn
authors.forename: Kundong
authors.initials: K
authors.lastname: Wang
authors.forename: Guozheng
authors.initials: G
authors.lastname: Yan
authors.forename: Pingping
authors.initials: P
authors.lastname: Jiang
authors.forename: Wenhui
authors.initials: W
authors.lastname: He
authors.forename: Xudong
authors.initials: X
authors.lastname: Guo
mesh_terms: D000465:Algorithms; D015374:Biosensing Techniques / Q000295:instrumentation*; D002214:Capsules; D004574:Electromagnetic Fields; D004583:Electrons; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D041981:Gastrointestinal Tract; D006801:Humans
chemical_list: D002214:Capsules