Kim Inkyum, Cho Hyunwoo, Kim Daewon
Department of Electronics and Information Convergence Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin 17104, Republic of Korea.
Department of Electronic Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin 17104, Republic of Korea.
Micromachines (Basel). 2024 Aug 26;15(9):1079. doi: 10.3390/mi15091079.
The proliferation of small electronic devices has significantly increased the demand for self-powered sensors. This study introduces a triboelectric frequency sensor (TFS) that combines the frequency-responsive characteristics of triboelectric nanogenerators with a simple one-dimensional structure for sustainable vibration measurement. This sensor is specifically designed to aid in the tuning of string instruments, capable of detecting frequency responses up to 330 Hz generated by string vibrations. Structural optimization was achieved by setting a non-contact mode with a gap distance of 3 mm and utilizing perfluoroalkoxy alkane (PFA) as the contact dielectric material. The TFS exhibits dynamic response characteristics by varying the vibrating frequency and the tension of the string, facilitated by a custom-built testing setup. Frequency data captured by the sensor can be visualized on a monitor through the integration of a microcontroller unit (MCU) and dedicated coding. The practical applicability and effectiveness of this sensor in real-world scenarios are demonstrated experimentally. This innovation represents a significant step forward in the development of self-sustaining sensing technologies for precision instrument tuning.
小型电子设备的激增显著增加了对自供电传感器的需求。本研究介绍了一种摩擦电频率传感器（TFS），它将摩擦纳米发电机的频率响应特性与简单的一维结构相结合，用于可持续振动测量。该传感器专门设计用于辅助弦乐器的调音，能够检测弦振动产生的高达330 Hz的频率响应。通过设置3 mm的间隙距离的非接触模式并使用全氟烷氧基烷烃（PFA）作为接触介电材料实现了结构优化。通过定制的测试装置，TFS通过改变振动频率和弦的张力展现出动态响应特性。通过集成微控制器单元（MCU）和专用编码，传感器捕获的频率数据可以在监视器上可视化。实验证明了该传感器在实际场景中的实际适用性和有效性。这一创新代表了用于精密仪器调音的自维持传感技术发展的重要一步。
