重频脉冲X射线分幅成像仪的研制
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摘要
为研究和科学评价轻武器的损伤效应,基于X射线透射成像技术和离轴分幅技术,研制了一台5通道10分幅脉冲X射线成像仪。该成像仪主要包括X射线转换屏、离轴分幅镜头、5通道ICCD相机、同步信号发生器和图像采集与控制软件。同步信号发生器在外部信号触发下产生同步输出信号,触发脉冲X射线源产生脉冲X射线;脉冲X射线透过测试物体后,经X射线转换屏转换成可见光图像;可见光图像经过5个离轴设计的镜头成像后,被对应的5套ICCD相机同步循环记录,可获得测试物体内部的序列图像。概述了离轴分幅镜头、ICCD相机、同步信号发生器及X射线转换屏等关键技术。该成像仪的像素分辨率为1 024×1 024,成像视场为300mm×300mm,可获取10幅序列图像,重复频率取决于脉冲X射线源的频率。
To study and scientifically evaluate the damage effects of light weapons,a 5-channel10-frame pulsed X-ray imaging instrument was developed based on X-ray transmission imaging technology and off-axis frame splitting technique.The instrument mainly includes an X-ray conversion screen,off-axis optical lens,5-channel ICCD camera,a synchronous signal generator,and an image acquisition and control software.The synchronous signal generator generates synchronous output signals triggered by external signal,synchronous output signal triggers pulsed X-ray source to produce X-ray pulse,and X-ray pulse passes through the test object,and it is converted into visible images by the X-ray conversion screen.The visible images are produced by 5 off-axis lens,and recorded by 5 corresponding ICCD cameras,and the sequence images within the test object can be obtained.The key technologies are summarized,such as off-axis framing lens,ICCD camera,synchronous signal generator,and X-ray conversion screen.The pixel resolution of the imaging instrument is 1 024×1 024,the imaging field is 300 mm×300 mm,and the repetition rate depends on the frequency of the pulsed X-ray source.
To study and scientifically evaluate the damage effects of light weapons,a 5-channel10-frame pulsed X-ray imaging instrument was developed based on X-ray transmission imaging technology and off-axis frame splitting technique.The instrument mainly includes an X-ray conversion screen,off-axis optical lens,5-channel ICCD camera,a synchronous signal generator,and an image acquisition and control software.The synchronous signal generator generates synchronous output signals triggered by external signal,synchronous output signal triggers pulsed X-ray source to produce X-ray pulse,and X-ray pulse passes through the test object,and it is converted into visible images by the X-ray conversion screen.The visible images are produced by 5 off-axis lens,and recorded by 5 corresponding ICCD cameras,and the sequence images within the test object can be obtained.The key technologies are summarized,such as off-axis framing lens,ICCD camera,synchronous signal generator,and X-ray conversion screen.The pixel resolution of the imaging instrument is 1 024×1 024,the imaging field is 300 mm×300 mm,and the repetition rate depends on the frequency of the pulsed X-ray source.
引文
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[12]郭明安,杨少华,罗通顶,等.用于高速成像的紧凑式像增强器门控脉冲发生器[J].现代应用物理,2016,7(4):041203.(GUO Ming-an,YANG Shao-hua,LUO Tongding,et al.A compact image intensifier gate pulse generator for high speed imaging[J].Modern Applied Physics,2016,7(4):041203.)
[13]罗通顶,杨少华,郭明安.高精度CCD相机的远程光纤传输系统[J].光通信技术,2017(10):53-56.(LUO Tong-ding,YANG Shao-hua,GUO Ming-an.Remote optical fiber transmission system for high precision CCD camera[J].Optical Communication Technology[J].2017(10):53-56.)
[14]罗通顶,郭明安,杜继业,等.远程控制高时间分辨多通道脉冲发生器设计[J].计算机测量与控制,2015,23(8):2 921-2 923.(LUO Tong-ding,GUO Min-gan,DU Ji-ye.Design of a long-distance controlled high time resolution multi-channel pulse generator[J].Computer Measurement&Control,2015,23(8):2 921-2 923.)
[2]王正国.常规杀伤武器及其致伤特点[M].上海:上海科学技术出版社,1981.(WANG Zheng-guo.Conventional Destruction Weapons and Their Injury Characteristics[M].Shanghai:Shanghai Scientific&Technical Phblishers,1981.)
[3]郭明安,冯兵,罗剑辉,等.基于CCD的脉冲X射线实时成像系统[J].传感器技术,2004,23(9):84-85.(GUO Mingan,FENG Bing,LUO Jian-hui.Pulsed X-ray real-time imaging system based on CCD[J].Journal of Transducer Technology,2004,23(9):84-85.)
[4]谢洪波,祝世民,龚艳霞,等.应用于数字高速成像的离轴光学系统设计[J].应用光学,2015,36(2):194-198.(XIEHong-bo,ZHU Shi-min,GONG Yan-xia,et al.Design of off-axis optical system applied for digital high-speed imaging[J].Journal of Applied Optics,2015,36(2):194-198.)
[5]吴侃,邵冲,李新碗.用雪崩三极管电路生成高压负脉冲技术研究[J].电子技术,2009,46(5):75-77.(WU Kan,SHAO Chong,LI Xin-wan.Research on the generation of negative high-voltage pulse using avalanche transistor[J].Electronic Technology,2009,46(5):75-77.)
[6]蔡厚智,刘进元.超快脉冲电路的研制及应用[J].深圳大学学报:理工版,2010,27(1):33-36.(Cai Hou-zhi,Liu Jinyuan.Investigation and application of ultrafast pulse circuitry[J].Journal of Shenzhen University Science and Engineering,2010,27(1):33-36.)
[7]杜继业,董静然,宋顾周.一种脉宽可调的高压脉冲发生器的研究与设计[J].核电子学与探测,2010,30(8):1 046-1 049.(DU Ji-ye,DONG Jing-ran,SONG Gu-zhou.Investigation and design on the high voltage pulse generator with tunable pulse width[J].Nuclear Electronics&Detection Technology,2010,30(8):1 046-1 049.)
[8]杜继业,宋岩,罗通顶,等.像增强器高速选通脉冲发生器[J].现代应用物理,2013,4(3):299-302.(DU Ji-ye,SONG yan,LUO Tong-ding,et al.Design of a high-speed gate pulse generator for image intensifiers[J].Modern Applied Physics,2013,4(3):299-302.)
[9]刘春平,李爽,李景镇.一种用于高速摄影仪的快门脉冲发生器[J].深圳大学学报:理工版,2013,30(2):133-137.(LIU Chun-ping,LI Shuang,LI Jing-zhen.A shutter pulse generator for high speed camera[J].Journal of Shenzhen University Science and Engineering,2013,30(2):133-137.)
[10]BAKER R J,JOHNSON B P.A 500 V nanosecond pulse generator using cascade-connected power MOSFETS[J].Measurement Scirnce&Technology,1992,3(8):775-777.
[11]DREW C,JASON H.A compact high voltage nanosecond pulse generator[C]//Proc ESA Annual Meeting on Electrostatics,2008.
[12]郭明安,杨少华,罗通顶,等.用于高速成像的紧凑式像增强器门控脉冲发生器[J].现代应用物理,2016,7(4):041203.(GUO Ming-an,YANG Shao-hua,LUO Tongding,et al.A compact image intensifier gate pulse generator for high speed imaging[J].Modern Applied Physics,2016,7(4):041203.)
[13]罗通顶,杨少华,郭明安.高精度CCD相机的远程光纤传输系统[J].光通信技术,2017(10):53-56.(LUO Tong-ding,YANG Shao-hua,GUO Ming-an.Remote optical fiber transmission system for high precision CCD camera[J].Optical Communication Technology[J].2017(10):53-56.)
[14]罗通顶,郭明安,杜继业,等.远程控制高时间分辨多通道脉冲发生器设计[J].计算机测量与控制,2015,23(8):2 921-2 923.(LUO Tong-ding,GUO Min-gan,DU Ji-ye.Design of a long-distance controlled high time resolution multi-channel pulse generator[J].Computer Measurement&Control,2015,23(8):2 921-2 923.)
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