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Design and implementation of cooling system for focal plane assembly of observation camera in astronomical satellite
Cheng, Pan1,2; Qu, Youshan1; Li, Huijuan1,2; Tan, Jiahai1
2011
会议名称2011 International Conference on Electronics, Communications and Control, ICECC 2011
会议录名称2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings
卷号vol.5
页码2615-2619
会议日期September 9, 2011 - September 11, 2011
会议地点Ningbo, China
出版地IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
会议主办者Ningbo University
出版者IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
产权排序1
摘要

In order to observe dim astronomical objects, the imaging sensor of the Astronomical Observation Camera (AOC) in the satellite needs to work at 65C to suppress its dark current noise. To achieve the low temperature environment, a cooling system on Thermoelectric Cooler (TEC) was designed. The cooling system adopted a Single Chip Microprocessor as its control computing platform and its software used self-adaptive digital PID control algorithm was developed. The data of the real-time temperatures, captured by the acquiring circuits from the temperature sensors which were mounted at the back surface of the imaging sensor, were used to be the input of the self-adaptive digital PID control algorithm, and the output calculated by the algorithm was applied to adjusted the control current of the driver circuit for the TEC, and then the temperature of Focal Plane Assembly (FPA) was cooled down or warmed up to satisfy the working requirements. Experimental results show that the designed system can control the temperature gradient of the FPA less than 1C and reach its normal working temperature 65C quickly. Its control accuracy is 2C. The practical experiment results displayed the imaging performance of the FPA was stable and the designed cooling system suppressed the dark current noise effectively to get high Signal-to-Noise Ratio images, and the designed cooling system worked stable.

关键词Focal plane assembly Thermoelectric cooler (TEC) Peliter effect Digital PID algorithm
学科领域计算机应用其他学科(含图像处理)
作者部门瞬态光学技术国家重点实验室
收录类别EI
ISBN号9781457703218
语种英语
文献类型会议论文
条目标识符http://ir.opt.ac.cn/handle/181661/14428
专题瞬态光学研究室
作者单位1.Xi'An Institute of Optics and Precision Mechanics, CAS, Xi'an, China
2.Graduate University, Chinese Academy of Sciences, Beijing, China
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GB/T 7714
Cheng, Pan,Qu, Youshan,Li, Huijuan,et al. Design and implementation of cooling system for focal plane assembly of observation camera in astronomical satellite[C]. IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States,2011:2615-2619.
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