TY - GEN
T1 - Towards a smart experimental arena for long-term electrophysiology experiments
AU - Jow, Uei Ming
AU - Kiani, Mehdi
AU - Huo, Xueliang
AU - Ghovanloo, Maysam
PY - 2011
Y1 - 2011
N2 - Advancements in wireless power and data transmission have raised the prospects of using a variety of low power microelectronic devices such as biosensors, stimulators, and actuators in long-term uninterrupted electrophysiology experiments on small freely behaving animal subjects in large experimental arenas. This paper presents our progress towards developing such a system, called the EnerCage. This system includes a stationary unit for inductive power transmission through a scalable array of overlapping hexagonal coils, which are optimized using an accurate inductive link model and an iterative optimization process. Furthermore, the EnerCage system is equipped with an array of 3-D magnetic sensors and a smart tracking algorithm for non-line-of-sight positioning of the animal subject. EnerCage also has a small mobile unit, which is either attached to or implanted in the subject's body. This unit includes a magnetic tracer and an efficient power management block, which is capable of closed-loop regulated inductive power delivery to the experimental device(s) of interest. An early prototype of the EnerCage system with six coils has been presented here. The coil array achieves a power efficiency of 17.8% at the worst-case horizontal misalignment of 42 mm (half of the coil radius) at a coupling distance of 70 mm with the mobile unit coil of 20 mm in radius.
AB - Advancements in wireless power and data transmission have raised the prospects of using a variety of low power microelectronic devices such as biosensors, stimulators, and actuators in long-term uninterrupted electrophysiology experiments on small freely behaving animal subjects in large experimental arenas. This paper presents our progress towards developing such a system, called the EnerCage. This system includes a stationary unit for inductive power transmission through a scalable array of overlapping hexagonal coils, which are optimized using an accurate inductive link model and an iterative optimization process. Furthermore, the EnerCage system is equipped with an array of 3-D magnetic sensors and a smart tracking algorithm for non-line-of-sight positioning of the animal subject. EnerCage also has a small mobile unit, which is either attached to or implanted in the subject's body. This unit includes a magnetic tracer and an efficient power management block, which is capable of closed-loop regulated inductive power delivery to the experimental device(s) of interest. An early prototype of the EnerCage system with six coils has been presented here. The coil array achieves a power efficiency of 17.8% at the worst-case horizontal misalignment of 42 mm (half of the coil radius) at a coupling distance of 70 mm with the mobile unit coil of 20 mm in radius.
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U2 - 10.1109/BioCAS.2011.6107742
DO - 10.1109/BioCAS.2011.6107742
M3 - Conference contribution
AN - SCOPUS:84855653651
SN - 9781457714696
T3 - 2011 IEEE Biomedical Circuits and Systems Conference, BioCAS 2011
SP - 121
EP - 124
BT - 2011 IEEE Biomedical Circuits and Systems Conference, BioCAS 2011
T2 - 2011 IEEE Biomedical Circuits and Systems Conference, BioCAS 2011
Y2 - 10 November 2011 through 12 November 2011
ER -