Analysis and amendment on the sensitivity of large target area light screen

Yuan Yun; Tian Hui

doi:10.3788/IRLA201847.0617004

In order to solve the problem of unevenness in sensitivity distribution of 10 m10 m large target area detection in indoors, the sensitivity distribution of the lens light-screen detection sensor was studied. According to the theory of lens photometry, the main factors influencing the sensitivity of light-screen detection were analyzed. The mathematical model of detection sensitivity was established, and the change trend of the amplitude of the projectile signal in different positions of the light-screen was obtained. Finally, the sensitivity correction scheme was proposed, and the evenly sensitivity distribution of the detection screen was realized by changing the luminous brightness of the light source at different positions. Using the air gun to verify the modified detection light-screen shows that the sensitivity to meet the evenly requirements of large target area sensitivity.

Analysis and amendment on the sensitivity of large target area light screen

1. School of Optoelectronic Engineering,Xi'an Technological University,Xi'an 710021,China

Received Date: 2018-01-05

Rev Recd Date: 2018-02-15

Publish Date: 2018-06-25

Key words:

velocity measurement of projectile /
large target area detection light screen /
L-shaped light source /
sensitivity correction

Abstract: In order to solve the problem of unevenness in sensitivity distribution of 10 m10 m large target area detection in indoors, the sensitivity distribution of the lens light-screen detection sensor was studied. According to the theory of lens photometry, the main factors influencing the sensitivity of light-screen detection were analyzed. The mathematical model of detection sensitivity was established, and the change trend of the amplitude of the projectile signal in different positions of the light-screen was obtained. Finally, the sensitivity correction scheme was proposed, and the evenly sensitivity distribution of the detection screen was realized by changing the luminous brightness of the light source at different positions. Using the air gun to verify the modified detection light-screen shows that the sensitivity to meet the evenly requirements of large target area sensitivity.

HTML

Reference (12)

[1]	Ni Jinping, Cai Rongli, Tian Hui. Velocity measuring technology for 30 mm caliber flying projectiles based on large area light screens[J]. Journal of Test and Measurement Technology, 2008, 22(1):17-25. (in Chinese)倪晋平, 蔡荣立, 田会. 基于大靶面光幕靶30 mm口径弹丸测速技术[J]. 测试技术学报, 2008, 22(1):17-25.
[2]	Wang Changming. Practical Ballistics[M]. Beijing:Ordnance Industry Press, 1994. (in Chinese)王昌明. 实用弹道学[M]. 北京:兵器工业出版社,1994.
[3]	Jiang Ming, Li Hanshan. Analysis to optical system performance of the sky screens[J]. Journal of Xi'an Technological University, 2006, 26(2):127-130. (in Chinese)江铭, 李翰山. 天幕靶光学系统性能分析[J]. 西安工业大学学报, 2006, 26(2):127-130.
[4]	Zhao Dong'e, Zhou Hanchang. Projectile velocity measurement technology based on large effective area laser screen[J]. Journal of Test and Measurement Technology, 2005, 19(4):416-419. (in Chinese)赵冬娥, 周汉昌. 基于大面积激光光幕的弹丸速度测试技术研究[J]. 测试技术学报, 2005, 19(4):416-419.
[5]	Ni Jinping, An Ying, Cai Rongli. Large area light screen:China, 200410073341.8[P]. 2005-05-11. (in Chinese)倪晋平, 安莹, 蔡荣立. 大靶面光幕靶:中国, 200410073341.8[P]. 2005-05-11.
[6]	Wei Jiankai. Study on sensitivity limit mechanism of sky screen[D]. Xi'an:Xi'an Technological University, 2012. (in Chinese)魏建凯. 天幕靶灵敏度极限机理研究[D]. 西安:西安工业大学, 2012.
[7]	Gao Fen, Ni Jinping, Tian Hui, et al. Design on the large sensor area light screen for velocity measurement of the flying projectile indoor[J]. Optical Technique, 2012, 38(2):175-179. (in Chinese)高芬, 倪晋平, 田会, 等. 室内超大面积探测区域测速光幕设计[J]. 光学技术, 2012, 38(2):175-179.
[8]	Wang Jianping. Development of LED type large light screen measuring system[D]. Xi'an:Xi'an Technological University.2015. (in Chinese)王建平. LED型大靶面光幕测量系统的研制[D]. 西安:西安工业大学, 2015.
[9]	Ni Jinping, Zhao Jingyuan, Gao Fen. Sensitivity analysis of arc light lens-style light screen[J]. Journal of Applied Optics, 2013, 34(2):295-299. (in Chinese)倪晋平, 赵静远, 高芬. 弧形光源镜头式光幕灵敏度分布研究[J]. 应用光学, 2013, 34(2):295-299.
[10]	Tian Hui, Ni Jinping, Jiao Mingxing. Research on detction sensitivity distribution regularity of lens-light-screen.[J]. Acta Aemamentarll, 2016, 37(2):325-331. (in Chinese)田会, 倪晋平, 焦明星. 镜头式光幕探测灵敏度分布规律研究[J]. 兵工学报, 2016, 37(2):325-331.
[11]	Hao Yunxiang, Chen Xiaju, Zhang Baozhou. Photomentry[M]. Beijing:China Metrology Press, 2010. (in Chinese)郝允祥, 陈遐举, 张保洲. 光度学[M]. 北京:中国计量出版社, 2010.
[12]	Liu Hui, Yang Chenzhu. Photometric Measurement Technique[M]. Beijing:China Metrology Press, 2011. (in Chinese)刘慧, 杨臣铸. 光度测量技术[M]. 北京:中国计量出版社, 2011.

Analysis and amendment on the sensitivity of large target area light screen

doi: 10.3788/IRLA201847.0617004

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Related

Proportional views