引信用气流驱动振动摩擦发电机

Airflow-driven Friction Generator for Fuze

针对基于涡街效应的气流驱动摩擦发电机存在高速下输出电能降低或不工作的问题,提出气流驱动振动摩擦发电机。该种发电机以两块平行设置的电路板为上下电极,一片聚四氟乙烯薄膜为中间振动膜,气流通过上下电极一排斜置进气孔,驱动聚四氟乙烯薄膜在上下电极之间振动产生静电感应而发电。仿真与吹风实验结果表明,该种发电机不仅可克服基于涡街效应的气流驱动摩擦发电机存在高速下输出电能降低的问题,而且还可提高气流驱动摩擦发电机的输出性能。输出电压峰值可达20 V以上,能满足微功耗电引信对电能的需求。

In view of the problem that the output power of air flow driven friction generator based on vortex street effect was reduced or did not work at high speed,a vibration friction generator driven by air flow was proposed.The generator took two parallel circuit boards as the upper and lower electrodes and a piece of polytetrafluoroethylene film as the middle vibrating film.The air flew through a row of inclined air inlet holes of the upper and lower electrodes to drive the polytetrafluoroethylene film to vibrate between the upper and lower electrodes to generate electrostatic induction and generated electricity.The results of simulation and air blowing test showed that the generator could not only overcome the problem of low output power of air driven friction generator based on vortex street effect at high speed,but also improved the output performance of air driven friction generator;the peak output voltage could reach more than 20 V,which could meet the power demand of micro power consumption fuze.