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Updated: May 24, 2025

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容量电准静态人体供电的生物物理建模

Lingke Ding, Arunashish Datta, Shreyas Sen

IEEE transactions on bio-medical engineering

|March 4, 2025

概括

电容电半静电人体供电 (EQS-HBP) 增强了可穿戴设备的无线电源. 这项研究优化了EQS-HBP的最大接收功率,通过将身体建模为阻抗线,并在接收器中使用连续共振.

科学领域:

生物医学工程生物医学工程
电气工程电气工程
可穿戴技术可穿戴技术

背景情况:

可穿戴设备需要高效的无线电源解决方案.
电容电准静电人体供电 (EQS-HBP) 为体内设备提供全身覆盖.
EQS-HBP最大化了接收的功率,与EQS人体通信 (EQS-HBC) 不同.

研究的目的:

为EQS-HBP开发一个针对较低终端阻抗优化的生物物理模型.
调查车身尺寸和接触阻抗对接收功率的影响.
提出电路技术,以最大限度地提高EQS-HBP系统的接收功率.

主要方法:

有限元方法 (FEM) 和分布式电路建模用于身体通道表征.
在体外实验中验证模拟结果的实验.
开发一个集成电路模型,以封装关键参数并优化接收器设计.

主要成果:

身体阻抗是由尺寸决定的;接触阻抗与接触面积相反相关.
较小的车身截面可以减少负载后的电压恢复.
与平行共振相比,在地面浮动接收器中的串行共振显著降低了输入阻抗,并改善了接收功率.

结论:

使用串联共振的优化接收器设计最大化了EQS-HBP的接收功率.
提出了一种方法来近似最佳的负载阻抗.
洞察力为先进的可穿戴应用程序提供更高的机身无线功率传输.

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