载波频移分集多点无线能量传输有效性的实验验证
Experiments Validating the Effectiveness of Multi-point Wireless Energy Transmission with Carrier Shift Diversity
摘要：
提出了一种无线传感器网络能量供应区域无缝扩展的方法，利用多点方案克服路径损耗衰减，引入载波频移分集技术减轻多波源间干扰的影响，使传感器从电线和电池中解放出来。由于我们关注的是能量传输部分，因此传感器或通信方案不在本文的范围内。为了验证所提出的无线能量传输的有效性，本文进行了室内实验，我们比较了不同的能量传输方案，包括传统的单点，简单的多点和我们提出的多点方案的功率分布和覆盖性能。为了方便地观察由多径和多波源之间的干扰引起的驻波的影响，在空房间中进行3D测量。我们的实验结果与模拟，假设一个类似的天线设置在自由空间环境中的结果表明，单点和多点无线能量传输的覆盖范围没有载波移位分集的路径损耗，驻波多路径和多波源之间的干扰。另一方面，所提出的方案可以克服由于路径损耗以及多径和多波源之间的干扰所产生的驻波的影响而导致的功率衰减。
英文摘要：
This paper presents a method to seamlessly extend the coverage of energy supply field for wireless sensor networks in order to free sensors from wires and batteries, where the multi-point scheme is employed to overcome path-loss attenuation, while the carrier shift diversity is introduced to mitigate the effect of interference between multiple wave sources. As we focus on the energy transmission part, sensor or communication schemes are out of scope of this paper. To verify the effectiveness of the proposed wireless energy transmission, this paper conducts indoor experiments in which we compare the power distribution and the coverage performance of different energy transmission schemes including conventional single-point, simple multi-point and our proposed multi-point scheme. To easily observe the effect of the standing-wave caused by multipath and interference between multiple wave sources, 3D measurements are performed in an empty room. The results of our experiments together with those of a simulation that assumes a similar antenna setting in free space environment show that the coverage of single-point and multi-point wireless energy transmission without carrier shift diversity are limited by path-loss, standing-wave created by multipath and interference between multiple wave sources. On the other hand, the proposed scheme can overcome power attenuation due to the path-loss as well as the effect of standing-wave created by multipath and interference between multiple wave sources.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
