CINRAD/SA雷达发射机主控板芯片级故障诊断技术  

A Chip Level Fault Diagnosis Technique for CINRAD/SA Radar Transmitter Main Control Board

作　　者：刘洁[1] 邵楠[1] 陈玉宝[1] LIU Jie;SHAO Nan;CHEN Yubao(Meteorological Observation Center of CMA,Beijing 100081,China)

机构地区：[1]中国气象局气象探测中心,北京100081

出　　处：《成都信息工程大学学报》2022年第6期668-673,共6页Journal of Chengdu University of Information Technology

摘　　要：主控板是发射机关键组件,是发射机控制保护中心,是影响发射机正常工作和稳定的关键。根据主控板线路图,总结主控板信号流程,在此基础上,依据实际测试的发射机主控板关键点波形或电平,研究规范化的主控板芯片级故障诊断技术,依据主控板芯片级故障诊断技术,解决主控板光耦芯片损坏导致发射机充电过压报虚警,引起发射机无法加高压故障,以及修复主控板充电脉冲信号差分接收芯片故障导致发射机加高压后人工线无电压故障。主控板故障维修效果表明:主控板芯片级故障诊断技术可以快速定位主控板故障点到芯片,方法简洁、操作规范,雷达技术保障人员容易掌握,能满足国家级、省级雷达测试维修平台和雷达站器件(芯片)级维修需求,为发射机主控板智能故障诊断提供借鉴,可有效缩短雷达故障维修时间,提高雷达业务运行可用性指标。The main control board is the key component of the transmitter,the control and protection center of the transmitter,and the key to the normal operation and stability of the transmitter.According to the main control board wiring diagram,sums up the main control board signal process,on this basis,according to the actual test transmitter master key waveforms or level,research the standardization of the main control board chip level fault diagnosis technology.According to the chip level fault diagnosis technology of the main control board,the fault that the transmitter cannot add high voltage caused by the damage of the optocoupler chip of the main control board is solved,and the fault that the transmitter cannot add high voltage caused by the differential receiving chip of the charge pulse signal of the main control board is repaired.The maintenance effect of main control board fault shows that:Main control board chip level fault diagnosis technology can quickly locate the master board fault point to chip,method is simple and operation specification,radar technical support personnel easy to master,can meet the national and provincial radar test maintenance platform and the radar station device(chips)level maintenance requirements,as the transmitter main control board to provide reference for intelligent fault diagnosis,which can effectively shorten the radar fault maintenance time,Improve radar operational availability indicators.

关 键 词：新一代天气雷达 主控板 信号流程 芯片级故障诊断技术 

分 类 号：TN957.3[电子电信—信号与信息处理]