title: [Research on wireless power transmission for gastrointestinal microsystems based on inductive coupling].
abstract: A wireless power transmission method based on electromagnetic coupling was proposed for gastrointestinal microsystems. We analyzed the coupling coefficient, taking coils' misalignments into account by calculating mutual inductance. A power transmission model was built up. And based on this model, the electric parameters of maximizing the received power were deducted under weakly coupling condition. From the transmitting efficiency formula, we found two ways to enhance the efficiency. The transmission power was more than 200mW in our experiments when the receiving coil was located at the center of transmitting coil. This validated the method feasibility.
authors.affiliation: Institute of Precise Engineering and Intelligent Microsystems, Shanghai Jiaotong University, Shanghai 200240, China. maguanying@sjtu.edu.cn
authors.forename: Guanying
authors.initials: G
authors.lastname: Ma
authors.forename: Guozheng
authors.initials: G
authors.lastname: Yan
mesh_terms: D053705:Capsule Endoscopes; D053704:Capsule Endoscopy / Q000379:methods; D011211:Electric Power Supplies; D004574:Electromagnetic Fields; D004867:Equipment Design; D005767:Gastrointestinal Diseases / Q000175:diagnosis; D006801:Humans; D008904:Miniaturization