战斗部破片光电测速系统设计

Design of Photoelectric Velocity Measurement System for Warhead Fragment

战斗部破片的飞行速度是体现其性能指标的重要参数;针对目前在战斗部破片速度参数测试中存在对测试环境要求高,测试面积小,设备结构易被破片误击而损坏,成本昂贵等问题,设计了非接触式战斗部破片光电测速系统,包含原向反射膜、反射式光电探测装置、光电转换电路、信号处理电路及测速装置;阐述了系统结构组成和测速原理,通过反射式光电探测装置与光电转换电路,将得到的光信号转换为电信号,利用集成信号处理电路对电信号滤波放大,比较整形处理,由FPGA,STM32及其他外设组成的测速装置自动处理数据输出并显示战斗部破片的飞行速度结果;实验结果表明:该系统能够可靠,稳定地完成战斗部破片速度的测量任务;与传统测速系统相比,具有不受限于环境,测试区域大,易维护,低成本,操作简单等优势。

The flight speed of warhead fragments is an important parameter to reflect its performance index.Aiming at the problems in warhead fragment velocity parameter tests,such as high test environment requirement,small test area,equipment structure easy to be damaged by fragment mishit,and high cost,a contactless warhead fragment photoelectric velocity measurement system is designed,which includes the original reflection film,reflection photoelectric detection device,photoelectric conversion circuit,signal processing circuit,and velocity measurement device.This paper describes the system structure and velocity measurement principle,the obtained light signal is converted into the electrical signal through the reflective photoelectric detection device and photoelectric conversion circuit.The integrated signal processing circuit is used to filter,amplify,compare,and process the electrical signal.The speed measuring device is composed of FPGA,STM32,and other peripherals,which automatically processes the data output and displays the flight speed results of warhead fragments.The experimental results show that the system can reliably and stably complete the measurement task of warhead fragmentation velocity.Compared with traditional speed measurement systems,it has the advantages of not limitation to environments,large test area,easy maintenance,low cost,simple operation and so on.