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Magnetic Levitation Coupled with Portable Imaging and Analysis for Disease Diagnostics
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一个完全无线和无电池定位系统,具有50微米的运动检测能力和适应式发射器功率控制,用于临床生物医疗应用.

Arkaprova Ray, Iman Habibagahi, Aydin Babakhani

    IEEE transactions on biomedical circuits and systems
    |June 26, 2023
    PubMed
    概括

    这项研究介绍了用于生物医学应用的无线,无电池的2D定位系统. 这种新型系统实现了高精度和运动传感能力,没有功率限制,增强了持续的健康监测.

    科学领域:

    • 生物医学工程 生物医学工程
    • 无线通信无线通信
    • 可植入的设备可以植入设备.

    背景情况:

    • 生物医学应用的现有本地化系统依赖于电池,造成泄漏和寿命有限等风险.
    • 持续的健康监测需要可靠的,长期的本地化解决方案,而无需电源依赖.
    • 目前的系统面临着小型化和in-vivo应用的功耗挑战.

    研究的目的:

    • 开发和验证一个完全无线和无电池的2D定位系统,用于生物医学.
    • 解决电池驱动定位系统在持续健康监测中的局限性.
    • 为了创建一个小型的,低功耗的定位器,具有运动感应能力.

    主要方法:

    • 一个无线和无电池的2D定位系统,使用40.68MHz的射频电源 (2W) 在4厘米的距离.
    • 一个集成电路 (IC) 无线传输一个锁定的亚 13.56 MHz 信号,消除了对一个饥渴的振荡器的需求.
    • 在猪肠模型中进行ex vivo测试,以评估定位精度和运动检测.

    主要成果:

    • 在ex vivo猪肠道测量中,获得了不到5毫米的局部精度.
    • 已经证明了对于50微米的运动和每分钟高达10次的运动速度的运动传感能力.
    • 该定位器具有紧的外形 (17毫米×12毫米×0.2毫米),平均功耗仅为6微瓦.

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  • 测量延迟记录在11.3毫秒.

    • 结论:

    • 拟议的无线,无电池的2D定位系统为持续的生物医学监测提供了安全和方便的解决方案.
    • 该系统检测细运动的能力扩展其实用到生理运动监测,如隔膜运动.
    • 这项技术为医疗保健中的先进,可植入和长期本地化解决方案铺平了道路.