TDI-CMOS焦面组件传热路径优化设计  

Optimization Design of the Heat Transfer Path for a TDI-CMOS Focal Plane Assembly

作　　者：王建超 柏添 孔林 姜峰 张雷 WANG Jianchao;BAI Tian;KONG Lin;JIANG Feng;ZHANG Lei(Chang Guang Satellite Technology CO.,LTD.,Changchun 130033,China)

机构地区：[1]长光卫星技术股份有限公司,长春130033

出　　处：《航天返回与遥感》2024年第2期92-101,共10页Spacecraft Recovery & Remote Sensing

摘　　要：为解决TDI-CMOS传感器在轨温漂问题,利用相变储能装置对焦面组件传热路径进行优化设计,以更好的控制传感器芯片在轨成像期间的温升,进一步提高空间相机成像品质。首先根据轨道热流环境及焦面组件工作特性确定仿真及试验边界条件;接着利用现有焦面组件结构进行建模仿真分析并开展热试验,得到优化前各部分温度结果;再根据现有结构进行热控优化设计,研究不同的传热路径对CMOS传感器温度的提升效果,确定出辅以相变储能装置的焦面组件热设计方案;最后开展焦面组件热光学试验,验证设计方案的正确性。试验结果表明,采用针脚散热方案与侧面散热相组合的强化传热方式能够满足CMOS传感器在工作期间5℃以内温升要求,且DN值变化小于0.2%,优化方案有效提高了成像品质。In order to solve the on-orbit temperature drift problem of TDI-CMOS sensors and further improve the imaging quality of the space camera,it is necessary to control the temperature rise of the sensor chip during on orbit imaging,and optimize the heat transfer path of the focal plane assembly by using a phase change energy storage device.Firstly,the simulation and experimental boundary conditions are determined based on the thermal flow environment of the track and the working characteristics of the focal plane assembly.The existing focal plane assembly structure is used for modeling,simulation analysis and thermal testing to obtain the temperature results of each part before optimization.Then,based on the existing structure,thermal control optimization design is carried out to study the effect of different heat transfer paths on the temperature improvement of CMOS sensors,and a thermal design scheme of the focal plane assembly supplemented by a phase change energy storage device is determined,Finally,the thermal equilibrium test of the focal plane assembly is carried out to verify the correctness of the design scheme.The experimental results show that the enhanced heat transfer method combining the pin heat dissipation scheme and side heat dissipation can meet the temperature rise requirements of CMOS sensors within 5℃during operation,and the DN value change is less than 0.2%.The optimized scheme effectively improves the imaging quality.

关 键 词：焦面组件 热控优化 相变储能 试验验证 空间遥感相机 

分 类 号：TN386.5[电子电信—物理电子学] V443.5[航空宇航科学与技术—飞行器设计]