改进JYJ-90型天幕靶用于XX产品初速测试

为改进一套JYJ-90型天幕靶用于测试XX产品弹丸的飞行速度，以光电转换原理为基础，采用光电子技术形成弹丸空间坐标的无形光幕，同时由光电传感器与多路测试仪结合测每发弹的初速，全部数据由计算机采集和处理。完成了一套用于上述目的的测试系统。这种集光、机、电、计算机多种先进技术为一体的先进测试设备可以完全有效地用于XX产品弹丸的初速测试。

Improving Type JYJ-90 Skyscreens to Test XX Product's Initial Velocity

To improve a kind of JYJ-90 skyscreens which is applied to measure the initial velocity,based on the principle of the apparatus which forming a sensor wall on the sky called skyscreens,by using of photoelectronical testing techniques,the paper introduces the method to sense the initial velocity of bullets.All data are processed by a desk-top computer.One set of such a system with the required functions has been produced.With high-tech and advantage over original device,the new one will make the product's initial velocity measured more effectively.