摘要
充电开关组件是发射机回扫充电电路关键组件,通过充电变压器完成对人工线的充电,它直接决定了人工线高压的稳定性和准确性,是影响发射机输出功率大小和稳定的关键因素之一。根据改进后开关组件线路图,总结出充电开关组件主通道、充电控制信号、故障监控信号流程和与此相关的故障树图。在此基础上,依据实际测试的发射机充电开关组件关键点波形或电平,研究出规范化的充电开关组件芯片级故障诊断流程,列举了依据充电开关组件芯片级故障诊断流程,解决了充电开关组件主通道充电赋能驱动电路芯片损坏导致无充电脉冲信号,引起无人工线高压和发射机输出功率故障,以及修复充电控制电路的充电电流传感器故障导致人工线电压过高,发射机束流报警。充电开关组件故障维修效果表明:充电开关组件芯片级故障诊断流程可以快速定位充电开关组件故障点到芯片,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,为发射机人工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 charging switch component is a key component of the transmitter retrace scanning-back charging circuit.The charging of artificial line is completed by the charging transformer,which directly determines the stability and accuracy of the artificial line high voltage,and is a key factor affecting the value and stability of the transmitter output power.According to the improved circuit diagram of switch components,this paper summarizes the main channel of the charging switch component,the charging control signal,the fault monitoring signal flow and the fault tree diagram.Then,based on the measured key point waveform and electrical level of the transmitter charging switch component,the standardized chip-level fault diagnosis process of the charging switch component is obtained.The problem that the damage of driving circuit chip of the main circuit of the charging switch component leads to no artificial line high voltage and transmitter output power failure is solved.Besides,the problem that repairing the fault of the charging current sensor in the charging current control circuit causes the artificial line voltage to be too high and the transmitter beam to alarm is solved as well.The fault repair effect of the charging switch component indicates that the chip-level fault diagnosis process of the charging switch component can quickly locate the fault point of the charging switch component to the chip.The method is simple and the operation is standardized,which can be easily grasped by the radar technical support workers and can meet the requirements of the national and provincial radar test and maintenance.In a word,the chip-level fault diagnosis process can provide references for the transmitter artificial intelligence fault diagnosis,and can effectively shorten the repair time of radar fault and improve the availability index of radar operation.
作者
潘新民
杨奇
杜云东
李传柱
崔炳俭
Pan Xinmin;Yang Qi;Du Yundong;Li Chuanzhu;Cui Bingjian(Henan Meteorological Observation Data Center,Zhengzhou 450003,China;Beijing Metstar Radar Co. Limited,Beijing 100094,China;Xinyang Meteorological Office,Xinyang 464000,China;Zhengzhou Meteorological Office,Zhengzhou 450000,China)
出处
《气象与环境科学》
2020年第3期124-133,共10页
Meteorological and Environmental Sciences
基金
国家重点研发计划(2018YFC1506101)。
关键词
新一代天气雷达
充电开关组件
故障诊断技术
故障树
芯片级故障诊断流程
new generation weather radar
charging switch component
fault diagnosis technology
fault tree
chip-level fault diagnosis process
