CAJ | 학술논문

针对二级轻气炮毫米级弹丸的速度测量存在干扰大、误差大问题，设计并实现一种利用激光光幕测量弹丸飞行速度的测试系统。系统采用红光半导体激光器作光源，多个光电二极管并联平行排布作为光电探测器，形成双幕光幕靶。通过信号处理电路对弹丸信号进行处理，然后基于PCI总线的数据采集卡对输出信号进行采集，并设计了上位机控制软件，实现了对信号的高速数据采集和实现图形显示等功能。现场实验结果表明：该系统具有采样速度快精度高、抗干扰能力强、易于操作等特点。
침대이급경기포호미급탄환적속도측량존재간우대、오차대문제，설계병실현일충이용격광광막측량탄환비행속도적측시계통。계통채용홍광반도체격광기작광원，다개광전이겁관병련평행배포작위광전탐측기，형성쌍막광막파。통과신호처리전로대탄환신호진행처리，연후기우PCI총선적수거채집잡대수출신호진행채집，병설계료상위궤공제연건，실현료대신호적고속수거채집화실현도형현시등공능。현장실험결과표명：해계통구유채양속도쾌정도고、항간우능력강、역우조작등특점。
The two-stage light gas gun millimeter level projectile velocity measurement has interference and er-rors.This paper developes a prototype system using laser screen to measure the projectile velocity.The system used semiconductor laser of red light as the light source, and several photodiodes arranged in parallel as a photo-electric detector which formed a double light screen.Projectile signal was processed by the signal processing cir-cuit.Then the output signal was collected by the data acquisition card based on the PCI bus.PC control software was designed to achieve high-speed data acquisition and signal graphics display.Experimental results show that the designed system has the characteristics of fast reaction, high precision, anti-interference ability and easy op-eration.