Guan Xiang, Yao Yongming, Wang Kuankuan, Liu Yixin, Pan Zhipeng, Wang Zhihong, Yu Yang, Li Tianyu
School of mechanical and Aerospace Engineering, Jilin University, Changchun 130022, P. R. China.
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, P. R. China.
ACS Appl Mater Interfaces. 2024 Sep 4;16(35):46516-46526. doi: 10.1021/acsami.4c07890. Epub 2024 Aug 20.
Real-time monitoring of UAV motor speed is crucial for enhancing control performance and ensuring flight safety. However, this task faces challenges such as difficult sensor installation and high costs. This study introduces a wireless rotational speed sensing system based on a UAV-rotary triboelectric nanogenerator (UR-TENG). By employing a carefully designed structure with soft contact and a freestanding-triboelectric-layer mode, UR-TENG exhibits characteristics like low friction, affordability, ease of production, and self-powering capability. This eliminates the need for an external power source and addresses the complexity of installation in the limited space of UAVs. Experimental findings demonstrate that UR-TENG possesses high sensitivity and stability, maintaining the structural integrity of the UAV. The goodness of fit is notably high at 0.99959, with a maximum error rate of only 0.014 within a range of 6270 rpm. Moreover, UR-TENG integrates with a microcontroller unit (MCU) and external circuitry to form a monitoring system. This system transmits electrical signals to a PC via a Wi-Fi module, facilitating real-time rotational speed sensing and anomaly detection. Finally, a practical application demonstration on a UAV validates the adaptability of UR-TENG to complex operational environments. This study presents a promising approach for online rotation monitoring of UAV motors, with potential for commercialization, and introduces new avenues for TENG application in UAV technology.
无人机电机转速的实时监测对于提高控制性能和确保飞行安全至关重要。然而，这项任务面临着诸如传感器安装困难和成本高等挑战。本研究介绍了一种基于无人机旋转摩擦纳米发电机（UR-TENG）的无线转速传感系统。通过采用精心设计的软接触和独立摩擦电层模式结构，UR-TENG具有低摩擦、成本低、易于生产和自供电能力等特点。这消除了对外部电源的需求，并解决了在无人机有限空间内安装的复杂性问题。实验结果表明，UR-TENG具有高灵敏度和稳定性，保持了无人机的结构完整性。拟合优度高达0.99959，在6270转/分钟范围内最大误差率仅为0.014。此外，UR-TENG与微控制器单元（MCU）和外部电路集成，形成一个监测系统。该系统通过Wi-Fi模块将电信号传输到PC，便于实时转速传感和异常检测。最后，在无人机上的实际应用演示验证了UR-TENG对复杂操作环境的适应性。本研究为无人机电机的在线旋转监测提供了一种有前景的方法，具有商业化潜力，并为摩擦纳米发电机在无人机技术中的应用开辟了新途径。
