厦门地铁3号线列车乘客信息系统动态地图黑屏故障分析  

Fault Analysis of Dynamic Map Black Screen of Passenger Information System of Xiamen Metro Line 3

作　　者：胡斌 Hu Bin(Vehicle Center,Xiamen Rail Transit Group Co.,Ltd.,Xiamen,Fujian 361000,China)

机构地区：[1]厦门轨道交通集团有限公司车辆中心,福建厦门361000

出　　处：《机电工程技术》2021年第12期337-340,共4页Mechanical & Electrical Engineering Technology

摘　　要：阐述了地铁列车乘客信息系统功能及模块组成,重点介绍了地铁列车乘客信息系统LCD动态地图作用、组成及工作原理,针对厦门地铁3号线列车动态地图黑屏故障进行深入地排查与分析,发现原HTY型升压板ZD1稳压二极管热击穿后Q2三极管截止工作,使得升压板的IC-U1芯片没有正常工作,输出电压异常,从而导致动态地图黑屏故障。针对此故障原因提出了在原有HTY升压板(芯片使用电压8~28 V)的基础上去除ZD1稳压二极管对升压板电路输出电压是否有影响,经在不同电压、去留ZD1稳压二极管等工况下进行对比试验测试,发现在不同电压工况下去除ZD1稳压二极管对原HTY升压板电路输出电压无影响,并进行了现场整改及跟踪验证,列车动态地图显示状态良好,表明提出的思路及应对措施是有效可行的。The functions and module composition of the subway passenger information system were expounded,and the function,composition and working principle of the LCD dynamic map of the subway passenger information system were introduced.In view of the black screen fault of the train dynamic map of Xiamen Metro Line 3,it was found that the Q2 triode was cut off after the thermal breakdown of the ZD1 zener diode of the original HTY booster plate,the IC-U1 chip of the booster board does not work normally and the output voltage was abnormal,resulting in the black screen fault of the dynamic map.Aiming at the cause of this fault,whether the ZD1 zener diode had an impact on the circuit output voltage of the boost board was put forward on the basis of the original HTY boost board(the chip use voltage is 8~28 V).Through comparative test under different voltages,removal and retention of ZD1 zener diode and other working conditions,it was found that the removal of ZD1 zener diode under different voltage conditions had no impact on the output voltage of the original HTY booster board circuit,and the on-site rectification and tracking verification were carried out.The display state of the train dynamic map is good,indicating that the ideas and countermeasures proposed are effective and feasible.

关 键 词：PIS系统 动态地图 升压板 稳压二极管 

分 类 号：U231.7[交通运输工程—道路与铁道工程]