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基于CCD电极直接驱动控制的双脉冲发光图像高速曝光技术原理研究

江孝国 杨兴林 杨国君 张小丁 李一丁 李洪 蒋薇 魏涛

江孝国, 杨兴林, 杨国君, 等. 基于CCD电极直接驱动控制的双脉冲发光图像高速曝光技术原理研究[J]. 强激光与粒子束, 2020, 32: 071001. doi: 10.11884/HPLPB202032.200012
引用本文: 江孝国, 杨兴林, 杨国君, 等. 基于CCD电极直接驱动控制的双脉冲发光图像高速曝光技术原理研究[J]. 强激光与粒子束, 2020, 32: 071001. doi: 10.11884/HPLPB202032.200012
Jiang Xiaoguo, Yang Xinglin, Yang Guojun, et al. Principle study on exposure technique for double pulse high speed imaging based on direct control of CCD driving electrodes[J]. High Power Laser and Particle Beams, 2020, 32: 071001. doi: 10.11884/HPLPB202032.200012
Citation: Jiang Xiaoguo, Yang Xinglin, Yang Guojun, et al. Principle study on exposure technique for double pulse high speed imaging based on direct control of CCD driving electrodes[J]. High Power Laser and Particle Beams, 2020, 32: 071001. doi: 10.11884/HPLPB202032.200012

基于CCD电极直接驱动控制的双脉冲发光图像高速曝光技术原理研究

doi: 10.11884/HPLPB202032.200012
基金项目: 国家自然科学基金项目(11475157,11405162,11375162);中国工程物理研究物院基金项目(2014A0402016)
详细信息
    作者简介:

    江孝国(1968—),男,硕士,研究员,主要从事CCD测量系统设计及应用、强流加速器电子束参数时间分辨测量研究; J_xg_caep@sina.com

  • 中图分类号: O463

Principle study on exposure technique for double pulse high speed imaging based on direct control of CCD driving electrodes

  • 摘要: 电荷耦合器件(CCD)是一类高性能的光电成像器件,具有成像阵列大、图像质量好的特点。但由于正常工作驱动时序复杂,工作帧频一般较低,无法满足较高成像帧频的要求。针对一种双脉冲发光图像的高速高分辨高质量成像要求,根据CCD信号电荷收集及转移的电极驱动特性,选择合适的CCD类型,以电荷转移时序为时间分隔界限,设计了一种电极直接进行控制的时序,实现了两个光脉冲图像的分离积分及信号转移、读出等,完成了双脉冲发光图像的等效高帧频曝光的原理验证,在保持CCD原有高成像质量的情况下获得了μs级间隔的两幅图像可分辨的能力,并实现了一种二分幅相机系统。
  • 图  1  CSNS双脉冲质子束的时间结构示意

    Figure  1.  Time structure of double proton beam pulse of CSNS

    图  2  CCD的主要驱动方式示意

    Figure  2.  Main driving modes for CCD

    图  3  行间转移CCD的驱动电极宏观结构示意

    Figure  3.  Macro_structure of CCD driving electrode for interline mode

    图  4  实现双脉冲曝光的主要时序设计示意

    Figure  4.  Main time schedule design for double pulse exposure

    图  5  双脉冲曝光模式下的信号电荷包的生成及转移示意

    Figure  5.  Production and transfers of signal charge packages in CCD

    图  6  双脉冲发光图像的高速曝光验证实验的系统构成情况示意

    Figure  6.  Schematic of validation experiment system for double pulse high speed imaging

    图  7  双脉冲发光图像的时间关系的调节示意

    Figure  7.  Adjustment of time relationship between double pulse images

    图  8  双脉冲发光图像的高速曝光效果示意

    Figure  8.  Experimental results under different overlap time for double pulse high speed imaging

    图  9  交叠时间对图像灰度的影响

    Figure  9.  Influence of overlap time of two pulses on image gray

    图  10  快门控制曝光与隔离曝光模式间的差异

    Figure  10.  Difference between shutter controlled exposure mode and separated exposure mode

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出版历程
  • 收稿日期:  2020-01-10
  • 修回日期:  2020-05-11
  • 刊出日期:  2020-06-24

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