CAJ | 학술논문

高空核爆电磁脉冲（HEMP）对电子和电气设备构成严重威胁，但是目前针对军队急救医疗卫生装备的电磁脉冲（EMP）耦合效应及防护研究还比较薄弱。因此以某款当前军队医院所使用的便携式监护仪为研究对象，利用有界波电磁脉冲模拟器模拟产生HEMP进行辐射试验，评估HEMP对监护仪的辐射效应，在各种试验条件下测量干扰场强阈值，分析HEMP对监护仪的作用机理。试验表明：HEMP辐射场对监护仪的工作状态会造成严重干扰，上升时间短、持续时间短的电磁脉冲对设备的干扰能力更强。结合监护仪结构、辐射试验结果、HEMP对监护仪的作用机理可得出以下结论：①场线耦合是引入电磁脉冲干扰的主要途径，当导联线与入射电场方向平行时耦合效应增强，导联线的屏蔽层结构对屏蔽效能有显著的影响；②监护仪外壳的屏蔽效能较差，电磁脉冲可由显示屏和空隙直接渗透至监护仪内部形成干扰，加强导联线和外壳的屏蔽效能将有效提高监护仪抗HEMP的能力。
고공핵폭전자맥충（HEMP）대전자화전기설비구성엄중위협，단시목전침대군대급구의료위생장비적전자맥충（EMP）우합효응급방호연구환비교박약。인차이모관당전군대의원소사용적편휴식감호의위연구대상，이용유계파전자맥충모의기모의산생HEMP진행복사시험，평고HEMP대감호의적복사효응，재각충시험조건하측량간우장강역치，분석HEMP대감호의적작용궤리。시험표명：HEMP복사장대감호의적공작상태회조성엄중간우，상승시간단、지속시간단적전자맥충대설비적간우능력경강。결합감호의결구、복사시험결과、HEMP대감호의적작용궤리가득출이하결론：①장선우합시인입전자맥충간우적주요도경，당도련선여입사전장방향평행시우합효응증강，도련선적병폐층결구대병폐효능유현저적영향；②감호의외각적병폐효능교차，전자맥충가유현시병화공극직접삼투지감호의내부형성간우，가강도련선화외각적병폐효능장유효제고감호의항HEMP적능력。
We experimentally simulated the high-altitude electromagnetic pulse （HEMP） acting on a portable monitor, in which the interference thresholds Under different test conditions were set out and the controlling rules of HEMP coupling effect on monitor were obtained. The experimental results show that HEMP radiant field will remarkably cause the interference to the operating state of monitor. The EMP with shorter risetime and duration is also much easier to disturb the state of monitor. After synthetically analyzing the factors, such as the structure of monitor, the results of radiation experiment, and the effecting mechanism of HEMP on monitor, the conclusions can be drawn as follows. Firstly, field-line coupling is the major interference approach. When the lead cables are parallel to the incident electric field, the coupling effect enhances. The shielding effect of lead cable depends on the configuration of shielding layer. Secondly, the ~hielding effect of the monitor＇s shell is too poor to prevent that HEMP radiant field penetrates through the monitor. Some reinforcement technologies should be taken to improve the shielding effect of lead cables and the shell of monitor.