留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

640×512帧转移EMCCD相机时序设计

沈吉 那启跃 徐建东 常维静 张伟 简云飞

沈吉, 那启跃, 徐建东, 常维静, 张伟, 简云飞. 640×512帧转移EMCCD相机时序设计[J]. 红外技术, 2023, 45(5): 548-552.
引用本文: 沈吉, 那启跃, 徐建东, 常维静, 张伟, 简云飞. 640×512帧转移EMCCD相机时序设计[J]. 红外技术, 2023, 45(5): 548-552.
SHEN Ji, NA Qiyue, XU Jiandong, CHANG Weijing, ZHANG Wei, JIAN Yunfei. 640×512 Frame Transfer EMCCD Camera Timing Sequence Design[J]. Infrared Technology , 2023, 45(5): 548-552.
Citation: SHEN Ji, NA Qiyue, XU Jiandong, CHANG Weijing, ZHANG Wei, JIAN Yunfei. 640×512 Frame Transfer EMCCD Camera Timing Sequence Design[J]. Infrared Technology , 2023, 45(5): 548-552.

640×512帧转移EMCCD相机时序设计

基金项目: 

科技创新2030-“新一代人工智能”重大项目 2018AAA0103100

详细信息
    作者简介:

    沈吉(1988-),男,江苏海门人,硕士,高级工程师,从事光电器件与组件科研开发。E-mail:njustshenji@126.com

  • 中图分类号: TN223

640×512 Frame Transfer EMCCD Camera Timing Sequence Design

  • 摘要: 为了实现640×512分辨率的EMCCD(Electron-Multiplying CCD)在1×10-3 lx照度条件下25 fps连续动态成像,设计了对应的相机。搭建了相机硬件平台,分析了EMCCD工作时序、AFE工作时序、BT.656编码和Camera Link编码时序。利用硬件描述语言在FPGA中产生了相应的驱动时序。实现了EMCCD曝光和读出控制,AFE相关双采样和光学暗电平钳位,模拟视频信号逐行变隔行和插值拉伸以及Camera Link协议的并串转换。通过实际测量和分析,相机在模拟夜天光1×10-3 lx照度,EMCCD增益1000倍,镜头焦距25 mm,F1.4的条件下,能同时输出模拟视频和数字视频,成像帧率25 fps,信噪比21.8 dB。
  • 图  1  EMCCD器件结构

    Figure  1.  EMCCD device structure

    图  2  EMCCD工作时序

    Figure  2.  EMCCD work timing

    图  3  SHP、SHD信号以及数字信号的流水线输出延迟

    Figure  3.  SHP、SHD signal and data bus pipeline delay

    图  4  相机实物与模拟、数字视频输出

    Figure  4.  Camera analog and digital output video

    图  5  成像选定区域的信噪比

    Figure  5.  Selected region mean SD and SNR value

    表  1  PAL视频帧的格式定义

    Table  1.   PAL frame definition

    Lines Line Description
    1~22 Field1-First Vertical Blanking(Top)
    23~310 Field1-Active Video
    311~312 Field1-Second Vertical Blanking(Bottom)
    313~335 Field2-First Vertical Blanking(Top)
    336~623 Field2-Active Video
    624~625 Field2-Second Vertical Blanking(Bottom)
    下载: 导出CSV

    表  2  每行的数据结构

    Table  2.   Line data structure

    EAV code Blanking Video SAV code Active Video
    FF 0 0 EAV Cb Y Cr Y 255 0 0 SAV Cb Y Cr Y
    4 bytes 280 bytes 4 bytes 1440 bytes
    下载: 导出CSV

    表  3  Camera Link位分配

    Table  3.   Camera Link Bit Assignment

    Tx Input Signal Name Pin Name
    LVAL TX/RX 24
    FVAL TX/RX 25
    DVAL TX/RX 26
    Spare TX/RX 23
    Port A0 TX/RX 0
    Port A1 TX/RX 1
    Port A2 TX/RX 2
    Port A3 TX/RX 3
    Port A4 TX/RX 4
    Port A5 TX/RX 6
    Port A6 TX/RX 27
    Port A7 TX/RX 5
    Port B0 TX/RX 7
    Port B1 TX/RX 8
    Port B2 TX/RX 9
    Port B3 TX/RX 12
    下载: 导出CSV
  • [1] Hynecek J. Impactron-a new solid state image intensifier[J]. IEEE Transactions on Electron Devices, 2001, 48(10): 2238-2241. doi:  10.1109/16.954460
    [2] Jerram P. The LLCCD: low-light imaging without the need for an intensifier[C]//Proc SPIE, 2001, 4306: 178-186.
    [3] Hainsworth A H, Lee S, Foot P, et al. Super‐resolution imaging of subcortical white matter using stochastic optical reconstruction microscopy (STORM) and super‐resolution optical fluctuation imaging (SOFI)[J]. Neuropathology and Applied Neurobiology, 2018, 44(4): 417-426. doi:  10.1111/nan.12426
    [4] WANG Z, LU Y, LI W, et al. Single image super-resolution with attention-based densely connected module[J]. Neurocomputing, 2021, 453: 876-884. doi:  10.1016/j.neucom.2020.08.070
    [5] QIU D, ZHENG L, ZHU J, et al. Multiple improved residual networks for medical image super-resolution[J]. Future Generation Computer Systems, 2021, 116: 200-208. doi:  10.1016/j.future.2020.11.001
    [6] Chaurasiya K R, Dame R T. Single Molecule FRET Analysis of DNA Binding Proteins[M]//Single Molecule Analysis. Humana Press, New York, NY, 2018: 217-239.
    [7] WANG R, ZHANG G, LIU H. DNA-templated nanofabrication[J]. Current Opinion in Colloid & Interface Science, 2018, 38: 88-99.
    [8] Shriver R, Veatch S. A Hands-on freshman seminar course in DNA origami[J]. Biophysical Journal, 2017, 112(3): 464a. http://www.onacademic.com/detail/journal_1000039866432810_11e3.html
    [9] Chakraborty S, Hasan G. Spontaneous Ca2+ influx in drosophila pupal neurons is modulated by IP3-receptor function and influences maturation of the flight circuit[J]. Frontiers in Molecular Neuroscience, 2017, 10: 111. doi:  10.3389/fnmol.2017.00111
    [10] Montecchi R, Schwob E. Long-term imaging of DNA damage and cell cycle progression in budding yeast using spinning disk confocal microscopy[M]//New York: Genome Instability. Humana Press, 2018: 527-536.
    [11] Schubeis T, Le Marchand T, Andreas L B, et al. 1H magic-angle spinning NMR evolves as a powerful new tool for membrane proteins[J]. Journal of Magnetic Resonance, 2018, 287: 140-152. doi:  10.1016/j.jmr.2017.11.014
    [12] LEE J, FENG X, CHEN O, et al. Stable, small, specific, low-valency quantum dots for single-molecule imaging[J]. Nanoscale, 2018, 10(9): 4406-4414. doi:  10.1039/C7NR08673C
    [13] Enomoto T, Kubota H, Mori K, et al. Absolute bioluminescence imaging at the single-cell level with a light signal at the Attowatt level[J]. BioTechniques, 2018, 64(6): 270-274. doi:  10.2144/btn-2018-0043
    [14] Feinendegen L E, Cuttler J M. Biological effects from low doses and dose rates of ionizing radiation: science in the service of protecting humans, a synopsis[J]. Health Physics, 2018, 114(6): 623-626. doi:  10.1097/HP.0000000000000833
    [15] 刘智超, 樊桂花, 郭惠超, 等. 基于EMCCD的激光主动成像参数分析[J]. 激光与红外, 2016, 46(3): 271-274. doi:  10.3969/j.issn.1001-5078.2016.03.005

    Liu Zhichao, Fan Guihua, Guo Huichao et al. Analysis of laser active imaging parameters based on EMCCD[J]. Laser & Infrared, 2016, 46(3): 271-274. doi:  10.3969/j.issn.1001-5078.2016.03.005
    [16] 龚德铸, 王立, 卢欣. 微光探测EMCCD在高灵敏度星敏感器中的应用研究[J]. 红外与激光工程, 2007(z2): 534-539. doi:  10.3969/j.issn.1007-2276.2007.z2.139

    Gong Dezhu, Wang Li, Lu Xin. Detection of faint light EMCCD based on star sensor[J]. Infrared and Laser Engineering, 2007(z2): 534-539. doi:  10.3969/j.issn.1007-2276.2007.z2.139
    [17] 米本和也, 陈榕庭, 彭美桂. CCD/CMOS图像传感器基础与应用[M]. 北京: 科学出版社, 2006: 98-100.

    Mibenheye, Chen Rongting, Peng Meigui. Fundamentals and Applications of CCD/CMOS image sensor[M].Beijing: Science Press, 2006: 98-100.
    [18] Automated Imaging Association. Specifications of the Camera Link Interface Standard for Digital Cameras and Frame Grabbers, Version 1.1[Z/OL]. Automated Imaging Association, 2000, http://edge.rit.edu/content/P10662/public/old/Specs/CameraLink%20Specs.pdf.
  • 加载中
图(5) / 表(3)
计量
  • 文章访问数:  105
  • HTML全文浏览量:  102
  • PDF下载量:  28
  • 被引次数: 0
出版历程
  • 收稿日期:  2021-10-27
  • 修回日期:  2022-06-23
  • 刊出日期:  2023-05-20

目录

    /

    返回文章
    返回