高精度星敏感器温度测量系统设计与实现  

Design and implementation of temperature measuring and controlling system for high-precision star sensor

作　　者：李平[1,2] 魏仲慧[1] 何昕[1] 何家维[1,2] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院研究生院,北京100039

出　　处：《电子技术应用》2012年第9期82-84,88,共4页Application of Electronic Technique

摘　　要：针对环境温度对高精度星敏感器测量精度的影响,设计了基于FPGA和AD7416的星敏感器温度测量控制系统。以FPGA作为主控制器,通过I2C总线控制温度传感器AD7416采集温度并控制制冷系统对星敏感器进行制冷,使其工作在-20℃-0℃范围内。实验结果表明,该系统测量速度快,测量精度高,提高了星敏感器的成像质量和测量精度,可满足星敏感器系统要求。For the impact of ambient temperature to the high-precision star sensor, it designed temperature measuring and controlling system based on FPGA and AD7416. FPGA dominates the temperature sensor AD7416 to extract temperature and control refrigeration system cooling star sensor by I2C bus, and ensure temperature in the range of -20℃～0℃ to star sensor. Experiments show that the system can improve the imaging quality and measuring precision of star sensor with rapidly measuring and high precise and meet the requirements of star sensor system.

关 键 词：星敏感器 温度测量 I2C FPGA AD7416 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]