摘要
野外使用的光电探测靶易受外界环境的干扰而产生假弹丸信号,引起仪器误触发,导致测量仪器工作异常。利用光电探测靶的探测幕厚特征与实际弹丸飞行速度,分析弹丸与其他假弹丸作用于光幕产生的信号脉宽差异,剔除干扰信号;根据信号脉宽特征,设计弹丸信号识别与提取的逻辑电路,并结合实际测量的多光幕系统,利用各光幕间的信号逻辑关系,达到消除假弹丸信号的目的。
The photoelectric detection target used in the open field is often interfered by external environment, which may generate fake projectile signals that can make equipment trigger mistakenly and measurement system work abnormally. The feature of detection screen thickness and the real velocity of projectile were used to analyze the signal difference of the real and fake projectile when they passing the screen, and calculate the pulse width generated by the real projectile and fake projectile. A logic circuit for identifying and extracting projectile signal was designed according to the feature of the pulse width. The fake projectile signals were finally eliminated by use of the logical relationship of the signals between each screen based on the real multi-screen system.
出处
《电光与控制》
北大核心
2010年第3期75-79,共5页
Electronics Optics & Control
基金
陕西省教育厅基金项目(2006K05-G15)
关键词
光电探测靶
弹丸信号
消除
幕厚
photoelectric detection target
projectile signal
elimination
screen thickness
