非均匀温度场下红外热成像仪温控系统设计
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摘要
为降低外界环境温度和内部发热元件形成的非均匀温度场对红外热成像仪的成像性能影响。通过Proe和Ansys ICEPARK建立红外热成像仪的有限元模型,在红外镜头表面进行黑色阳极氧化、喷砂处理增强辐射换热,以及安装风扇增强对流换热保证高温环境时的散热,低温环境时采用热电阻进行温升设计,并仿真分析红外热成像仪在不同温度环境下整机内部温度分布和红外镜头温度分布情况,并利用在高低温箱的红外热成像仪来观察平行光管中的靶标图的成像质量,验证温控设计的高效性。结果表明:所采用温度控制电路板对风扇与热电阻能进行温度控制,当环境温度下降至0℃和升高至30℃时,启动温控系统使红外热成像仪光学系统温度正常,保证红外热成像仪的成像质量。
In order to reduce the ambient temperature and the non-uniform temperature field formed by the internal heating elements, the imaging performance of the infrared thermal imager was affected. The finite element model of the infrared thermal imager was established by Proe and Ansys ICEPARK. The black anodizing and blasting treatment on the surface of the infrared lens enhanced the radiation heat transfer, and the fan was used to enhance the convection heat transfer to ensure the heat dissipation in the high temperature environment. The thermal resistance was designed for temperature rise, and the internal temperature distribution and infrared lens temperature distribution of the infrared thermal imager under different temperature environments were simulated and analyzed. The infrared thermal imager in thehigh and low temperature chamber was used to observe the target in the collimator. The image quality of the graph verified the efficiency of the temperature control design. The results show that the temperature control circuit board can control the temperature of the fan and the thermal resistance. When the ambient temperature drops to 0 ℃ and rises to 30 ℃, The temperature control system is activated to make the temperature of the infrared thermal imager optical system normal, and the imaging quality of the infrared thermal imager is ensured.
In order to reduce the ambient temperature and the non-uniform temperature field formed by the internal heating elements, the imaging performance of the infrared thermal imager was affected. The finite element model of the infrared thermal imager was established by Proe and Ansys ICEPARK. The black anodizing and blasting treatment on the surface of the infrared lens enhanced the radiation heat transfer, and the fan was used to enhance the convection heat transfer to ensure the heat dissipation in the high temperature environment. The thermal resistance was designed for temperature rise, and the internal temperature distribution and infrared lens temperature distribution of the infrared thermal imager under different temperature environments were simulated and analyzed. The infrared thermal imager in thehigh and low temperature chamber was used to observe the target in the collimator. The image quality of the graph verified the efficiency of the temperature control design. The results show that the temperature control circuit board can control the temperature of the fan and the thermal resistance. When the ambient temperature drops to 0 ℃ and rises to 30 ℃, The temperature control system is activated to make the temperature of the infrared thermal imager optical system normal, and the imaging quality of the infrared thermal imager is ensured.
引文
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[10] Liu Huibin, Zou Songhua. Stud y on the process of black thermal control coating on anodic oxidation of aluminum alloy[J]. Electroplating and Finishing, 2016, 38(8):35-38.(in Chinese)刘会彬,邹松华.铝合金阳极氧化着黑色热控涂层工艺研究[J].电镀与精饰, 2016, 38(8):35-38.
[11] Li Guozhang, Jiang Wentao, Ren Guoquan, et al. Study on the influence of temperature and pressure on imaging quality of vehicle optical system[J]. Laser&Infrared, 2016, 46(9):1113-1118.(in Chinese)李国璋,姜文韬,任国全,等.温度和气压对车载光学系统成像质量的影响研究[J].激光与红外, 2016, 46(9):1113-1118.
[2] Yu Shanmeng, Liu Ju, Yang Jinsong, et al. Thermal design and simulation of off-axis space optical remote sensor[J].Infrared and Laser Engineering, 2011, 40(8):1521-1525.(in Chinese)于善猛,刘巨,杨近松,等.离轴式空间光学遥感器的热设计与仿真[J].红外与激光工程, 2011, 40(8):1521-1525.
[3] Song Xin. Research on thermal control technology of ultraviolet imaging spectrometer[D]. Changchun:Graduate School of Chinese Academy of Sciences(Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences), 2014.(in Chinese)宋昕.紫外临边成像光谱仪的热控制技术研究[D].长春:中国科学院研究生院(中国科学院长春光学精密机械与物理研究所), 2014.
[4] Liu Yan, Qian Hongliang, Fan Feng. Non-uniform temperature field characteristics of sunlight in a giant radio telescope[J].Journal of Architecture and Civil Engineering, 2015, 32(3):81-88.(in Chinese)刘岩,钱宏亮,范峰.巨型射电望远镜结构日照非均匀温度场特性[J].建筑科学与工程学报, 2015, 32(3):81-88.
[5] Zhu Chengxi. Thermal integration analysis and heat dissipation design of infrared imaging system[D]. Shanghai:Graduate School of Chinese Academy of Sciences(Shanghai Institute of Technical Physics, Chinese Academy of Sciences), 2014.(in Chinese)朱承希.红外成像系统的光机热集成分析及散热设计[D].上海:中国科学院研究生院(中国科学院上海技术物理研究所), 2014.
[6] Wang Huajie, Chen You, Qian Hongliang, et al. Non-uniform temperature field test of grid model in sunshine[J]. Journal of Harbin Institute of Technology, 2018, 50(1):191-198.(in Chinese)王化杰,陈友,钱宏亮,等.网架模型日照非均匀温度场试验[J].哈尔滨工业大学学报, 2018, 50(1):191-198.
[7] Qian Hongliang, Liu Ye, Fan Feng, et al. Non-uniform temperature field of Shanghai 65 m radio telescope and its effect[J]. Optics and Precision Engineering, 2014, 22(4):970-978.(in Chinese)钱宏亮,柳叶,范峰,等.上海65 m射电望远镜非均匀温度场及其效应[J].光学精密工程, 2014, 22(4):970-978.
[8] Zeng Zhengming. Manuals of Mechanical Engineering Materials:Metallic Materials[M]. Beijing:Machinery Industry Press, 2003.(in Chinese)曾正明.机械工程材料手册:金属材料[M].北京:机械工业出版社, 2003.
[9] Zhao Honggang. Study on heat transfer characteristics of highlevel waste disposal repository and stability of disposal chamber-taking Beishan pre-selection area in Gansu as an example[D]. Beijing:Beijing Institute of Geology, Nuclear Industry, 2009.(in Chinese)赵宏刚.高放废物处置库热传导特性及处置硐室稳定性研究-以甘肃北山预选区为例[D].北京:核工业北京地质研究院, 2009.
[10] Liu Huibin, Zou Songhua. Stud y on the process of black thermal control coating on anodic oxidation of aluminum alloy[J]. Electroplating and Finishing, 2016, 38(8):35-38.(in Chinese)刘会彬,邹松华.铝合金阳极氧化着黑色热控涂层工艺研究[J].电镀与精饰, 2016, 38(8):35-38.
[11] Li Guozhang, Jiang Wentao, Ren Guoquan, et al. Study on the influence of temperature and pressure on imaging quality of vehicle optical system[J]. Laser&Infrared, 2016, 46(9):1113-1118.(in Chinese)李国璋,姜文韬,任国全,等.温度和气压对车载光学系统成像质量的影响研究[J].激光与红外, 2016, 46(9):1113-1118.
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