用于弹道测量的实时测速同步触发仪设计

A synchronous trigger system capable of getting the velocity of current firing used in ballistic trajectory measurement

介绍了一种实时获取当发弹丸速度的同步触发系统。采用两台天幕靶和测时电路实时测量当发弹丸的速度,根据测得的速度和事先确定的靶距,计算输出测试仪器触发需要的延时值。同时,设计了滤除蚊虫、飞鸟等外界环境干扰的电路,确保输出的触发信号稳定可靠。详细介绍了系统组成、工作原理与逻辑电路的设计。设计的系统经过实弹射击试验验证,工作稳定、可靠。介绍的触发系统可用于外弹道测试领域,大大地提高了触发系统的可靠性。

In order to improve both the projectile capture rate and the reliability of the external trajectory measurement instruments,a kind of synchronous trigger instrument which can get the velocity of current firing is put forward.The instrument can measure the velocity of flying projectile by the means of two sky screens and the time measuring circuit at real time,and the demanding delay time of the measurement system can be calculated according to both the current velocity and the preset distance between two sky screens.The filter circuits are designed to filter disturbed signals such as mosquitoes,flying birds,etc.The stability and reliability of the instrument is enhanced.The composition of the system,work principle and the design on the logic circuit are introduced.This synchronous trigger system can be used in external projectile measurement.