CAJ | 학술논문

不同种类光电耦合器件(光耦)结构工艺对空间总剂量辐射的敏感性存在较大差异,故对其在航天器的使用应区别对待.文章分别对组成常见光耦的LED部分、光电耦合部分以及集成放大电路部分受电离总剂量辐射和位移损伤效应的影响进行分析,比较了光耦各个组成部分和不同工艺的光耦对辐射的敏感度.在地面辐照测试数据基础上,以 3 种典型光耦为原型,设计在轨验证电路,对器件在辐射环境下的长期工作情况进行了试验验证.结果表明,在适当的参数选择和合理的电路设计下,这些光耦能够满足低地球轨道航天领域的应用需求.
불동충류광전우합기건(광우)결구공예대공간총제량복사적민감성존재교대차이,고대기재항천기적사용응구별대대.문장분별대조성상견광우적LED부분、광전우합부분이급집성방대전로부분수전리총제량복사화위이손상효응적영향진행분석,비교료광우각개조성부분화불동공예적광우대복사적민감도.재지면복조측시수거기출상,이 3 충전형광우위원형,설계재궤험증전로,대기건재복사배경하적장기공작정황진행료시험험증.결과표명,재괄당적삼수선택화합리적전로설계하,저사광우능구만족저지구궤도항천영역적응용수구.
The difference of sensitivity among different optocoupler techniques under the total dose degradation and the displacement damage should be duly considered when using these components in LEO spacecrafts. This paper analyzes the radiation effect of the LED part, the photodetector and the amplifier stage inside the optocouplers under both the total dose and the displacement radiation environments, and makes a sensitivity comparison of different parts and technologies. Based on the ground radiation test results, the on-orbit verification circuits are designed, and experiments of three kinds of typical optocouplers under low earth orbit are conducted. The experiment results indicate that these optocouplers could meet the requirements of low earth orbit applications under suitable parameters and with appropriate electric circuit design.