Journal
PHYSIOLOGICAL MEASUREMENT
Volume 32, Issue 10, Pages 1561-1573Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0967-3334/32/10/005
Keywords
wireless power transmission; active capsule endoscopy; biological tissue safety; mathematical programming; efficiency optimization
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Funding
- National Natural Science Foundation of China (NSFC) [60875061]
- National High Technology Research and Development Program of China (863) [2007AA04Z234]
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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.
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