基于高速摄影图像的轻气炮弹速测量研究  

Study on Velocity Measurement of Light Gas projectile Based on High Speed Photographic Images

作　　者：赵奇峰[1] 李进[1] 李运良[1] 张向荣[1] 朱玉荣[1] 谭书舜[1] ZHAO Qifeng;LI Jin;LI Yunliang;ZHANG Xiangrong;ZHU Yurong;TAN Shushun(Northwest Institute of Nuclear Technology,Xi'an 710024,China)

机构地区：[1]西北核技术研究所,西安710024

出　　处：《计算机测量与控制》2021年第11期132-136,共5页Computer Measurement &Control

基　　金：国家自然科学基金(11872318)。

摘　　要：目前对轻气炮弹丸测量的方法通常采用磁测速、激光遮断测速两种方法,这两种方法受到弹丸材质、尺寸、弹前激波等影响时易导致测量结果失效;针对此类问题,提出了一种可靠性更高的基于高速摄影图像模板匹配的轻气炮弹丸速度测量方法;利用高速摄影相机、辅助光源、刻度标尺等组成高速弹丸摄影系统,设置高速弹丸拍摄方案,得到轻气炮弹丸在观察室运动过程的高速摄影结果;采用弹丸目标模板匹配的方法对摄影结果进行计算,得到弹丸运动过程中的位置信息从而得到弹丸速度;将计算结果与激光遮断测速方法得到的速度值进行了对比,满足试验要求,证明了该方法既能可独立作为轻气炮发射弹丸测速手段,也可为现有测试手段提供有效校核。At present,magnetic velocimetry and laser blocking velocimetry are commonly used in the measurement of light gas projectile.These methods are affected by the projectile material,size and shock wave before the projectile,which leads to the failure of the measurement results.To solve this problem,a more reliable method for measuring the velocity of light-gas projectile based on the matching of high-speed photographic image template is proposed.High-speed projectile photography system is made up of high-speed camera,auxiliary light source and scale ruler,and high-speed projectile shooting scheme is set up to obtain the high-speed photography results of light-gas projectile moving in the observation room.The target template matching method is used to calculate the photographic results,and the position information during the projectile movement is obtained to obtain the projectile velocity.The results are compared with those obtained by laser blocking velocity measurement method and meet the test requirements.It is proved that the method can be used independently as a means of measuring the velocity of light gas gun projectile and can provide an effective check for existing test segments.

关 键 词：轻气炮弹丸 测速 高速摄影 模板匹配 

分 类 号：TJ3[兵器科学与技术—火炮、自动武器与弹药工程]