基于多路开关的遥测故障分析与验证  

Analysis and verification of telemetry failure based on analog multiplexers

作　　者：王烁[1] 郑鹏 吴雨翔[1] 赵慧卓[1] 

机构地区：[1]中国空间技术研究院通信卫星事业部,北京100094 [2]山东航天电子技术研究所,烟台264003

出　　处：《国外电子测量技术》2013年第2期13-16,共4页Foreign Electronic Measurement Technology

摘　　要：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。Aiming at locate and solve the failure caused by the breakdown of analog multiplexer happens in space, this arti- cle indicated a failure mode caused by the breakdown of analog multiplexer （CD4067 CMOS chip） , introduce the hardware test and software simulation based on the typical circuit of the spacecraft analog telemetry. According the experiments, conclude CD4067 chip＇s failure characteristics and provide an objective basis for telemetry multiplexer troubleshooting. The test results show that we can locate the fault telemetry link by calculating the change of the telemetry data.

关 键 词：遥测 多路电子开关 CD4067 

分 类 号：V441[航空宇航科学与技术—飞行器设计]