张旭辉, 李强, 王殿中, 等. 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[J]. 航天器环境工程, 2020, 37(5): 503-510 DOI: 10.12126/see.2020.05.014
引用本文: 张旭辉, 李强, 王殿中, 等. 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[J]. 航天器环境工程, 2020, 37(5): 503-510 DOI: 10.12126/see.2020.05.014
ZHANG X H, LI Q, WANG D Z, et al. Design and test verification of SEL control circuit for photoelectric signal processing system[J]. Spacecraft Environment Engineering, 2020, 37(5): 503-510 DOI: 10.12126/see.2020.05.014
Citation: ZHANG X H, LI Q, WANG D Z, et al. Design and test verification of SEL control circuit for photoelectric signal processing system[J]. Spacecraft Environment Engineering, 2020, 37(5): 503-510 DOI: 10.12126/see.2020.05.014

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

  • 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。

     

    Abstract: 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.

     

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