【摘要】 针对自行车等旋转机械场景下的能量收集需求，设计并研究了一种基于非接触式磁力耦合的压电发电装置。阐述了该压电发电装置的结构设计、磁耦合工作原理及理论模型；随后，通过系统的实验研究，分析了装置在变转速条件下的输出特性、阻抗匹配特性及储能性能；最后，通过为温湿度传感器供电以及通过收集自行车车轮的旋转机械能为发光二极管灯组持续供电的应用实验，验证了该装置为实际低功耗电子设备提供持续、稳定能源的可行性与有效性，为解决中低速旋转环境下的能量自主供给问题提供了可靠的技术方案，在旋转机械状态监测、智能轮胎系统等自供能应用领域前景广阔。更多还原

【Abstract】 In response to the energy harvesting requirements for rotating machinery scenarios such as bicycles, a piezoelectric power generation device based on non-contact magnetic coupling was designed and investigated.This paper elaborates on the structural design, working principle of magnetic coupling, and theoretical model of the piezoelectric power generation device.Subsequently, through systematic experimental studies, the output characteristics under varying rotational speeds, impedance matching properties, and energy storage performance of the device were analyzed.Finally, application experiments involving powering a temperature and humidity sensor and continuously supplying energy to an Light-Emitting Diode light set by harvesting rotational mechanical energy from bicycle wheels demonstrated the feasibility and effectiveness of the device in providing sustained and stable power for practical low-power electronic devices.This study offers a reliable technical solution for addressing the challenge of autonomous energy supply in low-to medium-speed rotational environments, showing broad application prospects in self-powered fields such as condition monitoring of rotating machinery and smart tire systems.更多还原