基于反射式光纤传感的弹丸测速方法

摘要

For traditional proj ectile velocity measuring method had the problems of test sensitivity was poor un-der strong electromagnetic interference and measuring device structure was complex,an proj ectile velocity meas-uring method based on reflective optical fiber sensor was designed.The method used optical fiber as the trigger signal transmission medium,which could work stably under the strong electromagnetic environment.FPGA was used as main control unit to realize intelligent measurement and real-time display of the proj ectile.Multiple measurement tests showed that the proj ectile velocity measuring method based on reflective optical fiber sensor had the characteristics of simple structure,high measurement precision,reliability.%针对传统弹丸测速方法在强电磁干扰下测试灵敏度低、测量装置结构复杂等问题，提出了基于反射式光纤传感的弹丸测速方法。该方法采用光纤作为触发信号传输介质，可以稳定地工作在强电磁环境下，采用FPGA作为主控单元，实现了弹丸飞行速度的智能测量与实时显示。多次测量试验表明：基于反射式光纤传感的弹丸测速方法具有结构简单、测量精度高、可靠性强等特点。