Chi Zhang, Kaihang Zhang, Jiaqi Lu, Liangquan Xu, Jianhui Wu, Jie Li, Shuting Liu, Weipeng Xuan, Jinkai Chen, Hao Jin, Shurong Dong, Jikui Luo
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引用次数: 0
摘要
自供电无线传感系统无需外部电源，因此特别适合应用于智能制造、智能医疗等领域。三电纳米发电机（TENG）是一种新兴的能量收集器，可用于为自供电无线传感器供电。该领域的最新成果是瞬时自供电无线传感器，TENG 产生的电能直接注入电感器-电容器（LC）谐振器，产生带有编码传感信息的衰减振荡信号。然而，由于近场磁耦合的限制，其频率较低（通常为 5 MHz），信号传输距离较短（3 m），限制了其广泛应用。在这项研究中，我们提出了一种自供电远距离无线传感平台，该平台利用基于声表面波（SAW）谐振器的射频振荡器将 TENG 能量转换为带有传感信息编码的高频信号。有了这个系统，传感信号就可以很容易地通过天线进行远距离传输。我们设计了一个优化系统，并充分研究了条件影响因素。结果表明，这种自供电无线传感器系统可以在 50 米的距离内对力、温度和振动进行无线传感。
A triboelectric nanogenerator-based self-powered long-distance wireless sensing platform for industries and environment monitoring
Self-powered wireless sensing system is particularly suitable for applications in intelligent manufacturing, smart healthcare etc. as it does not require an external power source. Triboelectric nanogenerator (TENG) is an emerging energy harvester that can be used to power self-powered wireless sensors. The latest achievement in this area is the instantaneous self-powered wireless sensor, where the electric energy generated by the TENG is injected directly into the inductor-capacitor (LC) resonator to generate a decaying oscillating signal with encoded sensing information. However, the frequency is lower (typically < 5 MHz) and the signal transmission distance is short (< 3 m) limited by the near-field magnetic coupling, restricting its widespread applications. In this research, we propose a self-powered long-distance wireless sensing platform which utilizes a surface acoustic wave (SAW) resonator based radio-frequency oscillator to convert TENG energy into a high frequency signal with sensing information encoded. With this system, the sensing signal can be easily transmitted through the antenna for long distance. An optimized system is designed and conditional influences are fully investigated. Results show this self-powered wireless sensor system can perform wireless sensing for force, temperature and vibration at a distance up to 50 m.
期刊介绍：
Nano Research is a peer-reviewed, international and interdisciplinary research journal that focuses on all aspects of nanoscience and nanotechnology. It solicits submissions in various topical areas, from basic aspects of nanoscale materials to practical applications. The journal publishes articles on synthesis, characterization, and manipulation of nanomaterials; nanoscale physics, electrical transport, and quantum physics; scanning probe microscopy and spectroscopy; nanofluidics; nanosensors; nanoelectronics and molecular electronics; nano-optics, nano-optoelectronics, and nano-photonics; nanomagnetics; nanobiotechnology and nanomedicine; and nanoscale modeling and simulations. Nano Research offers readers a combination of authoritative and comprehensive Reviews, original cutting-edge research in Communication and Full Paper formats. The journal also prioritizes rapid review to ensure prompt publication.
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