激光告警DSP加载系统的可靠性设计  

Reliable design of laser warning DSP bootloading system

作　　者：杨晓[1] 陈媛媛[1,2] 王志斌[1,2] 韩枫[1] 陈光威 

机构地区：[1]中北大学山西省光电信息与仪器工程技术研究中心,山西太原030051 [2]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《电子技术应用》2015年第10期17-19,23,共4页Application of Electronic Technique

基　　金：国家自然科学基金仪器专项基金(61127015);国际科技合作项目(2012DFA10680;2013DFR10150);山西省基础研究项目(2013021028-1)

摘　　要：基于SRAM的DSP芯片对空间粒子辐射敏感,针对相干型衍射光栅激光告警系统处于空间环境中时所产生空间粒子效应会影响激光信号的判别甚至使程序无法正常工作的问题,提出在软硬件方面对元件进行抗单粒子翻转设计。通过看门狗电路、三模冗余程序加固和差错检验校正的方法防止故障出现。该方法提高了系统运行的可靠性,保证程序正确执行。The DSP chip based on SRAM is sensitive about the space particle radiation, when the laser warning system is working in the space environment, the space particle effect will influence the discrimination of the laser signals and the work of the program. In view of this phenomenon, we come up with a method in the aspect of hardware and software components for single particle reverse design. The article puts forward a plan by taking the watchdog circuit, the triple modular redundancy and error checking to prevent such failures. This method improves the reliability of system operation, ensures the correct implementation of the program.

关 键 词：激光告警 上电自举 三模冗余 差错检验 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]