title: Efficiency optimization of wireless power transmission systems for active capsule endoscopes.
abstract: Multipurpose active capsule endoscopes have drawn considerable attention in recent years, but these devices continue to suffer from energy limitations. A wireless power supply system is regarded as a practical way to overcome the power shortage problem in such devices. This paper focuses on the efficiency optimization of a wireless energy supply system with size and safety constraints. A mathematical programming model in which these constraints are considered is proposed for transmission efficiency, optimal frequency and current, and overall system effectiveness. To verify the feasibility of the proposed method, we use a wireless active capsule endoscope as an illustrative example. The achieved efficiency can be regarded as an index for evaluating the system, and the proposed approach can be used to direct the design of transmitting and receiving coils.
authors.affiliation: Institute of Precise Engineering and Intelligent Microsystems, Shanghai Jiaotong University, Shanghai 200240, People's Republic of China. jiazhiwei@sjtu.edu.cn
authors.forename: Jia
authors.initials: J
authors.lastname: Zhiwei
authors.forename: Yan
authors.initials: Y
authors.lastname: Guozheng
authors.lastname: Jiangpingping
authors.forename: Wang
authors.initials: W
authors.lastname: Zhiwu
authors.forename: Liu
authors.initials: L
authors.lastname: Hua
mesh_terms: D000818:Animals; D053705:Capsule Endoscopes; D053704:Capsule Endoscopy / Q000295:instrumentation* / Q000379:methods*; D003198:Computer Simulation; D017097:Electric Impedance; D004560:Electricity; D006801:Humans; D066298:In Vitro Techniques; D034421:Sus scrofa; D013696:Temperature