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为了使航天器在在轨管理工作中,更加快速、准确地定位并处理多路电子开关失效故障,以在轨航天器遥测为背景,提出了一种多路电子开关(CD4067芯片)失效下的故障模式并根据航天器模拟量遥测采集的典型电路进行了硬件实验和软件仿真。通过实验总结出了CD4067芯片的失效特性,为遥测多路开关故障处理提供了客观依据。实验结果表明,通过计算遥测数据的变化可以定位故障遥测链路。
In order to enable spacecraft to locate and process multiple electronic switch failure more quickly and accurately in on-orbit management, and put forward a multi-channel electronic switch (CD4067 chip) failure under the background of on-orbit spacecraft telemetry Fault mode and based on spacecraft analog telemetry acquisition of the typical circuit hardware experiments and software simulation. The failure characteristics of the CD4067 chip are summarized through experiments, which provides an objective basis for the telemetry multiplexer troubleshooting. The experimental results show that the fault telemetry link can be located by calculating the change of telemetry data.