具有高能量密度的海浪能量采集与自供电监测系统。
Ocean wave energy harvesting with high energy density and self-powered monitoring system.
作者信息
Lu Ze-Qi, Zhao Long, Fu Hai-Ling, Yeatman Eric, Ding Hu, Chen Li-Qun
机构信息
Shanghai Institute of Applied Mathematics and Mechanics, Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai Frontier Science Center of Mechanoinformatics, School of Mechanics and Engineering Science, Shanghai University, Shanghai, China.
School of Microelectronics, Shanghai University, Shanghai, China.
出版信息
Nat Commun. 2024 Aug 2;15(1):6513. doi: 10.1038/s41467-024-50926-5.
Constructing a ocean Internet of Things requires an essential ocean environment monitoring system. However, the widely distributed existing ocean monitoring sensors make it impractical to provide power and transmit monitored information through cables. Therefore, ocean environment monitoring systems particularly need a continuous power supply and wireless transmission capability for monitoring information. Consequently, a high-strength, environmentally multi-compatible, floatable metamaterial energy harvesting device has been designed through integrated dynamic matching optimization of materials, structures, and signal transmission. The self-powered monitoring system breaks through the limitations of cables and batteries in the ultra-low-frequency wave environment (1 to 2 Hz), enabling real-time monitoring of various ocean parameters and wirelessly transmitting the data to the cloud for post-processing. Compared with solar and wind energy in the ocean environment, the energy harvesting device based on the defective state characteristics of metamaterials achieves a high-energy density (99 W/m). For the first time, a stable power supply for the monitoring system has been realized in various weather conditions (24 h).
构建海洋物联网需要一个必不可少的海洋环境监测系统。然而，现有的海洋监测传感器分布广泛，通过电缆提供电力并传输监测信息是不切实际的。因此，海洋环境监测系统特别需要具备持续供电和监测信息无线传输的能力。为此，通过对材料、结构和信号传输进行集成动态匹配优化，设计出了一种高强度、环境多兼容、可漂浮的超材料能量收集装置。该自供电监测系统突破了超低频波环境（1至2赫兹）中电缆和电池的限制，能够实时监测各种海洋参数，并将数据无线传输至云端进行后期处理。与海洋环境中的太阳能和风能相比，基于超材料缺陷状态特性的能量收集装置实现了高能量密度（99瓦/平方米）。首次在各种天气条件下（24小时）实现了监测系统的稳定供电。
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