高速物体速度测量反射式光幕光电性能研究  

Research on photoelectric properties of reflective light screen used for velocity measurement of high-speed object

作　　者：蔡怀宇[1] 王文涛[1] 孙秋实[1] 黄战华[1] 

机构地区：[1]天津大学精密仪器及光电子工程学院光电信息技术科学教育部重点实验室,天津300072

出　　处：《传感器与微系统》2011年第5期27-29,33,共4页Transducer and Microsystem Technologies

摘　　要：在使用区截装置的测速系统中,为了扩大靶面面积,适用于大口径的高速飞行物体的速度测量,系统采用没有反射装置的光幕做为靶面。通过理论分析了光幕探测距离的影响因素,并通过实验验证系统的实际探测性能,系统在距离镜头1 300 mm处,形成一个半径为400 mm的圆形有效探测区域,面积为0.502m2。在这个范围内,直径大于等于40 mm的物体通过时都可以被系统检测到。最后对其指标的改进根据不同的影响参数提出相应的解决方案。光幕靶在完成过靶目标探测的同时,简化了机械结构,易于调节,大大缩小了体积,减轻了质量,同时降低了成本,更加方便于野外实际应用。In order to expand the target area,and to suit for the velocity measurement of large-caliber and high-speed flying objects,this system uses light curtain without refective devise as the target.The influence factors of detective distance are analyzed,and the actual detective performance of the system is verified through experiment.The system forms a circle field of view,an area of 0.502 mm^2,with a radius of 400 mm generally at a distance of 1 300 mm from the lens.In this field of view,object of diameter greater than or equal to 40 mm can be detected when it pass through the light curtain.The related solution on index improvement is brought forward depending on the impact parameters.This system can not only detect the target,but also optimizes of the mechanical structure,easy to regulate and greatly reduces the volume.So it is more convenient to use in the wild environment.

关 键 词：反射式光幕 速度测量 探测距离 光电传感器 

分 类 号：TJ760.6[兵器科学与技术—武器系统与运用工程]