A Smart Wirelessly Powered Homecage for Long-Term High-Throughput Behavioral Experiments
A Smart Wirelessly Powered Homecage for Long-Term High-Throughput Behavioral Experiments
复制标题
DOI：
10.1109/jsen.2015.2430859
复制
发表时间：
2015-09-01
影响因子：
4.3
通讯作者：
Ghovanloo, Maysam
中科院分区：
文献类型：
--
作者：
Lee, Byunghun;Kiani, Mehdi;Ghovanloo, Maysam
一个无线供电的家庭系统，称为EnerCage-HC，配备了多线圈无线功率传输，闭环功率控制，光学行为跟踪，和一个图形用户界面，纵向电生理学和行为神经科学实验。EnerCage-HC系统可以为附着在小动物主体上的移动的单元无线供电，并且还可以实时跟踪它的行为，因为它被安置在标准的家庭笼内。EnerCage-HC系统配备了一个中心和四个重叠的倾斜绕线线圈，具有最佳几何形状，可在13.56 MHz下运行时形成三线圈和四线圈电力传输链路。与传统的双线圈链路相比，利用多线圈链路提高了功率传输效率（PTE），并且还将功率放大器的数量减少到仅一个，这显著降低了系统复杂性、成本和散热。安装在家庭笼上方90 cm处的Microsoft Kinect可以定位动物的位置和方向，精度为1.6 cm。此外，功率管理ASIC，包括一个高效率的有源整流器和自动线圈谐振调谐，在0.35 μ m的4 M2 P标准CMOS工艺制造的移动的单元。EnergeCage-HC在标称高度7 cm处实现了36.3%/16.1%的最大/最小PTE。通过在标准家庭笼内连续向移动的单元输送24 mW> 7小时，对自由行为的大鼠进行体内实验。
A wirelessly powered homecage system, called the EnerCage-HC, that is equipped with multicoil wireless power transfer, closed-loop power control, optical behavioral tracking, and a graphic user interface is presented for longitudinal electrophysiology and behavioral neuroscience experiments. The EnerCage-HC system can wirelessly power a mobile unit attached to a small animal subject and also track its behavior in real-time as it is housed inside a standard homecage. The EnerCage-HC system is equipped with one central and four overlapping slanted wire-wound coils with optimal geometries to form three-and four-coil power transmission links while operating at 13.56 MHz. Utilizing multicoil links increases the power transfer efficiency (PTE) compared with conventional two-coil links and also reduces the number of power amplifiers to only one, which significantly reduces the system complexity, cost, and heat dissipation. A Microsoft Kinect installed 90 cm above the homecage localizes the animal position and orientation with 1.6-cm accuracy. Moreover, a power management ASIC, including a high efficiency active rectifier and automatic coil resonance tuning, was fabricated in a 0.35-mu m 4M2P standard CMOS process for the mobile unit. The EnerCage-HC achieves a max/min PTE of 36.3%/16.1% at the nominal height of 7 cm. In vivo experiments were conducted on freely behaving rats by continuously delivering 24 mW to the mobile unit for > 7 h inside a standard homecage.