Vortex is one of the most common natural phenomena. However, its monitoring and measurement has always been difficult in both research and water conservancy projects. A multifunctional device is designed to detect the vortex based on the capability of a triboelectric nanogenerator (TENG), utilizing the relative motion principle of a conveyor transmission structure that is driven by the relative motion of upper and lower parts to generate electrical signals. The TENG based on a conveyor belt structure (CB‐TENG) having three electrodes can monitor the vortex in real time and measure the rotating speed of the vortex. The output time domain of different electrodes corresponds to different rotation directions; therefore, the vortex direction can be determined according to electrical signal characteristics. Additionally, the wheel speed sensor (accuracy up to 98.11%) and wind speed sensor based on CB‐TENG are fabricated and tested, which proves the feasibility and high efficiency of the scheme and demonstrates the wide application of CB‐TENG.

中文翻译：

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基于传送带结构的多功能摩擦电纳米发电机，用于高精度涡旋检测

涡旋是最常见的自然现象之一。但是，无论是在研究项目还是在水利项目中，其监测和测量一直很困难。多功能设备被设计为利用摩擦电纳米发电机（TENG）的能力来检测涡流，它利用由上部和下部的相对运动驱动的输送机传输结构的相对运动原理来产生电信号。基于具有三个电极的传送带结构（CB-TENG）的TENG可以实时监控旋涡并测量旋涡的旋转速度。不同电极的输出时域对应不同的旋转方向。因此，可以根据电信号特性确定涡旋方向。另外，