A Smart Cage With Uniform Wireless Power Distribution in 3D for Enabling Long-Term Experiments With Freely Moving Animals

作者：Mirbozorgi S Abdollah^*; Bahrami Hadi; Sawan Mohamad; Gosselin Benoit

来源：IEEE Transactions on Biomedical Circuits and Systems, 2016, 10(2): 424-434.

DOI：10.1109/TBCAS.2015.2414276

• Long-term in-vivo experiments
• multicoil inductive link
• power delivery to the load
• power harvesting
• power localization
• power transfer efficiency
• uniform power distribution in 3D
• wireless power transmission

This paper presents a novel experimental chamber with uniform wireless power distribution in 3D for enabling long-term biomedical experiments with small freely moving animal subjects. The implemented power transmission chamber prototype is based on arrays of parallel resonators and multicoil inductive links, to form a novel and highly efficient wireless power transmission system. The power transmitter unit includes several identical resonators enclosed in a scalable array of overlapping square coils which are connected in parallel to provide uniform power distribution along x and y. Moreover, the proposed chamber uses two arrays of primary resonators, facing each other, and connected in parallel to achieve uniform power distribution along the z axis. Each surface includes 9 overlapped coils connected in parallel and implemented into two layers of FR4 printed circuit board. The chamber features a natural power localization mechanism, which simplifies its implementation and ease its operation by avoiding the need for active detection and control mechanisms. A single power surface based on the proposed approach can provide a power transfer efficiency (PTE) of 69% and a power delivered to the load (PDL) of 120 mW, for a separation distance of 4 cm, whereas the complete chamber prototype provides a uniform PTE of 59% and a PDL of 100 mW in 3D, everywhere inside the chamber with a size of 27 x 27 x 16cm(3).

• 出版日期2016-4