科学级CCD远程图像采集系统设计

罗通顶; 李斌康; 郭明安; 杨少华; 周鸣

doi:10.3788/OPE.20132102.0496

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科学级CCD远程图像采集系统设计

信息科学 | 更新时间：2020-08-12

- 科学级CCD远程图像采集系统设计
- Remote image acquisition system with scientific grade CCD
- 光学精密工程 2013年21卷第2期页码：496-502
- 作者机构：
  
  西北核技术研究所西安,710024
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(No.91023049)
- DOI：10.3788/OPE.20132102.0496
  中图分类号： TN386.5;TB853.9
- 收稿日期：2012-05-30，
  
  修回日期：2012-11-29，
  
  网络出版日期：2013-02-23，
  
  纸质出版日期：2013-02-15
- 稿件说明：
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罗通顶李斌康郭明安杨少华周鸣. 科学级CCD远程图像采集系统设计[J]. 光学精密工程, 2013,21(2): 496-502

LUO Tong-ding LI Bin-kang GUO Ming-an YANG Shao-hua ZHOU Ming. Remote image acquisition system with scientific grade CCD[J]. Editorial Office of Optics and Precision Engineering, 2013,21(2): 496-502
罗通顶李斌康郭明安杨少华周鸣. 科学级CCD远程图像采集系统设计[J]. 光学精密工程, 2013,21(2): 496-502 DOI： 10.3788/OPE.20132102.0496.

LUO Tong-ding LI Bin-kang GUO Ming-an YANG Shao-hua ZHOU Ming. Remote image acquisition system with scientific grade CCD[J]. Editorial Office of Optics and Precision Engineering, 2013,21(2): 496-502 DOI： 10.3788/OPE.20132102.0496.

摘要

介绍了一种基于高分辨率超感光度（EXview）CCD的光纤远程传输采集系统的设计方法。该系统利用专用集成芯片实现其时序驱动；双复杂可编程逻辑器件(CPLD)完成系统的逻辑控制；采用带相关双采样的16位高精度模数变换器(ADC)对模拟视频进行数字化，从而提高系统动态范围。为满足其极端实验环境的应用，基于TLK1501进行大容量视频数据的远程传输；利用USB接口实现了计算机终端采集。最后，实验测试了系统的两个重要的评价参数：动态范围和系统灵敏度。该系统具有140万像素、16位高精度数字化位数、30 km以上的远程传输能力

其动态范围为1000~1500倍、灵敏度为2.34 ADU/e-左右，暗电流约为6 e-/pixel·s-1[>32 ℃]。实验显示该系统适用于对分辨率、灵敏度、安全性等要求高的科学研究中。

Abstract

The design method of a fiber transmission remote image acquisition system based on a high resolution EXview CCD is presented and the main units in the system are introduced in detail. The system utilizes a special IC to achieve time driving and takes double Complex Programmable Logic Devices(CPLDs ) to complete the logic control. In order to improve dynamic ranges

it uses a 16 bit high resolution Digital to Analog Converter(ADC) to digitalize video signals. Furthermore

the system can transfer mass video data in long-distances based on the TLK1501

and can perform data terminal collection with a computer by a USB. Finally

two important parameters: dynamic range and the system gain are estimated in an experiment. The system offers its specifications are a resolution of 1.4 million pixels

digitizer type of 16 bits

and remote transmission less than 30 km. Moreover

its dynamic range is 60-65 dB

system gain is 2.34 ADU/e-. Experiments show that designed system is fit for the science research which demands for the best quality mentioned above.

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references

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