光电信号处理系统单粒子锁定的解锁控制电路设计及试验验证  

Design and test verification of SEL control circuit for photoelectric signal processing system

作　　者：张旭辉[1] 李强[1] 王殿中[1] 郭刚[2] ZHANG Xuhui;LI Qiang;WANG Dianzhong;GUO Gang(Key Laboratory for Optical Remote Sensor Technology of CAST,Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China;Institute of Nuclear Physics,China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]北京空间机电研究所中国空间技术研究院空间光学遥感器技术核心专业实验室,北京100094 [2]中国原子能科学研究院核物理研究所,北京102413

出　　处：《航天器环境工程》2020年第5期503-510,共8页Spacecraft Environment Engineering

摘　　要：针对CCD视频信号处理器件单粒子锁定引起的系统功能中断,开发了光学遥感器光电信号处理系统单粒子锁定解锁控制电路。利用器件单粒子锁定时电流突增的特征,通过系统自动判别锁定—断电解锁—上电恢复的工作模式,进行了解锁控制电路与系统电路融合嵌入式设计与试验,在工程上实现了器件发生单粒子锁定时光电信号处理系统的自动解锁控制。利用重离子辐照进行的系统成像验证试验表明,解锁控制电路能够有效可靠判别单粒子锁定是否发生,并自动快速有效解除锁定,恢复器件及光电信号处理系统功能,系统功能恢复时间<5 s。To deal with the problem of the system function interruption caused by the single event latch-up(SEL)of the CCD video device,a control circuit is developed to restore the system function from the latch-up state for the photoelectric signal processing system.By tracing the signal of the sudden increase of the current during the SEL,we set up a working mode of the power on/off for the system to identify automatically the occurrence of the SEL,and respond with a short time-delayed cutting-off of the input power,then turn on the power again to restore the circuit chip’s function.The self-recovery is realized with the embedded engineering fusion design of the control circuit and the system circuit.The validation test by the heavy-ion shows that the control circuit works effectively,and the auto-resumption of the system functions takes less than five seconds.

关 键 词：视频信号处理器 单粒子锁定 解锁控制电路 试验验证 

分 类 号：TN432[电子电信—微电子学与固体电子学] TN702