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Low Noise CCD System Design and Implementation Based on Thermoelectric Refrigerating Unit

机译:基于热电制冷机组的低噪声CCD系统设计与实现

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By the research on the characteristics of CCD temperature - noise, this paper designs a cooling CCD which uses a miniaturized refrigeration technique in order to meet the request of obtaining high-quality image in the dim light conditions. The design uses thermoelectric cooling technology and accomplishes the cooling design and optimization of refrigeration cavity with the assistance of Qfin. The CCD temperature control is implemented by the incremental temperature control algorithm. The experimental results show that the system can low the operating temperature of CCD by 40??? with the ±0.1??? temperature accuracy, the quality of the image which is obtained by CCD in low temperature has obviously improved.
机译:通过对CCD温度噪声特性的研究,设计了一种采用小型制冷技术的冷却CCD,以满足在弱光条件下获得高质量图像的要求。该设计采用热电冷却技术,并在Qfin的帮助下完成了制冷腔的冷却设计和优化。 CCD温度控制是通过增量温度控制算法实现的。实验结果表明,该系统可将CCD的工作温度降低40℃。与±0.1 ???在温度精确度方面,通过CCD在低温下获得的图像质量有了明显提高。

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