双缝光幕靶设计

针对动力源火工品速度测试，设计了一种双缝光幕靶，实现对低速运动的火工品零件测速。与常规的单缝光幕靶不同，文中设计的双缝光幕靶将2个发射和接收装置融进一个单体结构，形成2个光幕。2台双缝光幕靶安装在同一个带有滑轨的固定架上，靶距可以任意调节。设计的双缝光幕靶可以替代传统的铜片测速方法，有效地提高了测量精度和实现了测量自动化。经过实弹射击和火工品试验验证，设计的双缝光幕靶测试系统可靠，测试数据准确。

Design on double-slit light screens

In order to achieve the velocity measurement for initiating explosive device, a new double-slit light screen was designed to realize low speed measurement for the part in initiating explosive device. The light screens designed are different from the traditional single-slit light screens. Two transmitters and receivers were installed into a common mechanical frame so that two screens were formed, which detected the moving objects going through their sensing area. Two identical devices designed are fixed on one mechanical frame with sliding rail. The distance between two devices can be easily adjusted by operator. The device can be used to measure the momentum of initiating explosive device. Compared to the traditional method with two pieces of copper as the sensor, this method improves the precision of measurement. The experiment with gas gun and real product proves that the double-slit light screen device is reliable and the result of measurement data is accurate.