红外天幕靶信号采集及调理电路设计

The Design of Signal Collection and Adjustment Circuit of Infrared Sky Screen

介绍了红外天幕靶的光电探测系统及信号处理电路。当弹丸穿过天幕时,光电探测系统能够成功获取弹丸过靶信号,实现对弹丸运动的研究,同时以CPLD为载体设计了数字滤波电路,有效地剔除了干扰信号。通过实弹测试表明红外天幕靶有效靶区大、灵敏度高、抗干扰能力强以及使用灵活方便等优点,适用于多种口径弹丸速度测量,也可用作其它设备(如狭缝相机等)的触发信号源。

In the paper ; photoelectric detection system and its signal processing circuit of the infrared sky screen were designed. This system can capture the signal as the projectile flies across the sky screen and the digital filter circuit were designed based on CPLD. So. the noise was removed. The experiment result indicates that the infrared sky screen has the advantages of large effective screen area,- flexibility, high sensitivity and strong anti-interference ability. The system can be utilized to measure the velocity of the several projectiles and trig the other pertinent equipments.