Du Taili, Zuo Xusheng, Dong Fangyang, Li Shunqi, Mtui Anaeli Elibariki, Zou Yongjiu, Zhang Peng, Zhao Junhao, Zhang Yuewen, Sun Peiting, Xu Minyi
Marine Engineering College, Dalian Maritime University, Dalian 116026, China.
Collaborative Innovation Research Institute of Autonomous Ship, Dalian Maritime University, Dalian 116026, China.
Micromachines (Basel). 2021 Feb 21;12(2):218. doi: 10.3390/mi12020218.
With the development of intelligent ship, types of advanced sensors are in great demand for monitoring the work conditions of ship machinery. In the present work, a self-powered and highly accurate vibration sensor based on bouncing-ball triboelectric nanogenerator (BB-TENG) is proposed and investigated. The BB-TENG sensor consists of two copper electrode layers and one 3D-printed frame filled with polytetrafluoroethylene (PTFE) balls. When the sensor is installed on a vibration exciter, the PTFE balls will continuously bounce between the two electrodes, generating a periodically fluctuating electrical signals whose frequency can be easily measured through fast Fourier transform. Experiments have demonstrated that the BB-TENG sensor has a high signal-to-noise ratio of 34.5 dB with mean error less than 0.05% at the vibration frequency of 10 Hz to 50 Hz which covers the most vibration range of the machinery on ship. In addition, the BB-TENG can power 30 LEDs and a temperature sensor by converting vibration energy into electricity. Therefore, the BB-TENG sensor can be utilized as a self-powered and highly accurate vibration sensor for condition monitoring of intelligent ship machinery.
随着智能船舶的发展，对用于监测船舶机械工作状态的先进传感器的需求大增。在当前工作中，提出并研究了一种基于弹跳球摩擦电纳米发电机（BB-TENG）的自供电且高精度的振动传感器。该BB-TENG传感器由两个铜电极层和一个填充有聚四氟乙烯（PTFE）球的3D打印框架组成。当传感器安装在振动激励器上时，PTFE球会在两个电极之间不断弹跳，产生周期性波动的电信号，其频率可通过快速傅里叶变换轻松测量。实验表明，BB-TENG传感器在10 Hz至50 Hz的振动频率范围内具有34.5 dB的高信噪比，平均误差小于0.05%，该频率范围涵盖了船舶上机械的大部分振动范围。此外，BB-TENG可通过将振动能量转化为电能为30个发光二极管和一个温度传感器供电。因此，BB-TENG传感器可作为一种自供电且高精度的振动传感器，用于智能船舶机械的状态监测。
