论文标题
能量中性设备：混合RF声学信号可以指出它们吗？
Energy Neutral Devices: Can Hybrid RF Acoustic Signals Point Them Out?
论文作者
论文摘要
我们提出了一种混合信号传导方法，以定位能量中性设备。我们的方法结合了两个世界中最好的：通信和能量传递的即时RF信号，以及较慢的传播声波以进行准确的距离测量。我们通过波束形成的RF信号引入了“ e-buffer”的先进能量负载。我们方法的科学贡献是双重的，可以提高定位性能和能量收获效率。一方面，我们克服了基于RF反向散射的室内定位中的当前距离限制。另一方面，它通过使用计算出的位置并将更高量的有向RF能量的射击到移动节点中增强了能量收集。我们为系统两侧提供功能架构，并提供概念验证。代表性用例中的实际测量结果显示，在868MHz频段的监管限制内，每小时10个位置的更新速率最高为4.5 m。制定了能源和功率模型，以提供对性能权衡的见解。
We present a hybrid signaling approach to position energy-neutral devices. Our method combines the best of two worlds: instant RF signals for both communication and energy transfer, and slower propagating acoustic waves for accurate distance measurements. We introduce advanced energy loading of an 'E-buffer' through beamformed RF signals. The scientific contribution of our approach is twofold, advancing both the positioning performance and the energy harvesting efficiency. On the one hand, we overcome current distance limitations in RF backscattering-based indoor localization. On the other hand, it enhances the energy harvesting by using the calculated position and beamforming a higher amount of directed RF energy into the mobile node. We provide a functional architecture for both sides of the system and present a proof-of-concept. Practical measurements in representative use cases show an update rate of 10 positions per hour within the regulatory constraints in the 868MHz band for distances up to 4.5 m. An energy and power model are drawn up to provide insights into the performance trade-offs.
