Inductive-Based Wireless Power Recharging System for an Innovative Endoscopic Capsule
Abstract
:1. Introduction
2. Objectives
2.1. Endoscopic Capsule Case Study
3. Implementation of the Wireless Recharging System
3.1. Design Overview
Battery Type | Capacity C [mAh] | Max. Continuous discharge current [mA] | Pick current [mA] | Dimensions [mm3] | Weight [g] | Supply [V] | Charge Voltage [V] | Charge Current [mA] | |
---|---|---|---|---|---|---|---|---|---|
VARTA CP 1254 | Rechargeable Lithium button Cells | 50 | 100 mA | 150@2s | 12.1(Ø) × 5.4 | 1.6 | 3.7 | 4.2 | 0.5 C 25mA |
Coil Type | Wire | dout | din | l | Number of Turns | Number of Layers | |
Receiver coil | Multi-layer spiral coil | AWG 29 | 15.5 mm | 13.5 mm | 3 mm | 12 (6 per layer) | 2 |
3.2. Receiver and Transmitter Coil Design
- optimization of the coil geometry with respect to the given constraints;
- external coil geometry;
- type and size of wire used;
- number of turns;
- analysis of the magnetic field generated by the two coils.
Coil Type | Wire | dout | din | l | Number of Turns | Number of Layers | |
Transmitter coil | Planar circular coil | AWG 18 | 42.61 mm | 20.81 mm | - | 10 | Single |
Self-inductance (measured) | Self-inductance (calculated) | Self-inductance (simulated) | |
---|---|---|---|
Transmitter coil | 3.6 µH | 3.95 µH | 3.84 µH |
Receiver coil | 3.3 µH | 3.45 µH | 3.36 µH |
3.3. Overview of Internal and External Circuits
4. System Integration
5. Experimental Results
6. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Tortora, G.; Mulana, F.; Ciuti, G.; Dario, P.; Menciassi, A. Inductive-Based Wireless Power Recharging System for an Innovative Endoscopic Capsule. Energies 2015, 8, 10315-10334. https://doi.org/10.3390/en80910315
Tortora G, Mulana F, Ciuti G, Dario P, Menciassi A. Inductive-Based Wireless Power Recharging System for an Innovative Endoscopic Capsule. Energies. 2015; 8(9):10315-10334. https://doi.org/10.3390/en80910315
Chicago/Turabian StyleTortora, Giuseppe, Francesca Mulana, Gastone Ciuti, Paolo Dario, and Arianna Menciassi. 2015. "Inductive-Based Wireless Power Recharging System for an Innovative Endoscopic Capsule" Energies 8, no. 9: 10315-10334. https://doi.org/10.3390/en80910315