基于电磁铁回路电流值标准差的站台门自保持电磁锁系统故障诊断及预测方法
赵晗1尹恩华2孙奎2
Fault Diagnosis and Prediction Method for Platform Door Self-holding Electromagnetic Lock System Based on Standard Deviation of Electromagnetic Circuit Current Value
ZHAO Han1YIN Enhua2SUN Kui2
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作者信息:1.郑州地铁集团有限公司， 450047， 郑州
2.中船海为高科技有限公司， 450052， 郑州
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Affiliation:1.Zhengzhou Metro Group Co., Ltd., 450047, Zhengzhou, China
2.China Shipbuilding Haiwei High Tech Co., Ltd.,450052, Zhengzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.04.046
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中图分类号/CLCN:U291.1+2
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栏目/Col:应用技术
摘要:
［目的］站台门电磁锁是城市轨道交通车站站台门的关键部件之一。电磁锁发生故障将直接影响线路的行车安全及乘客在站台的正常通行。在设备智能运维的发展趋势下，需要对站台门电磁锁的故障诊断及预测方法进行深入研究。［方法］简述了站台门自保持电磁锁系统工作原理，对自保持电磁锁3个故障种类下的8个子故障对正常运营的影响程度进行了分析。研究了电磁铁动作时的电流特性及故障时的电流特性，进一步对铁心卡滞、铁心未落到位、铁心吸合不到位3种故障工况进行研究。通过对不同故障工况下采集的电磁铁电流与正常状态下采集的电磁铁电流进行对比，进而得到该故障工况下电磁铁电流的特性。将故障工况下的电磁铁电路曲线与正常电磁铁标准曲线的标准差进行对比，从而实现对自保持电磁锁系统的故障诊断及预测。［结果及结论］故障工况下电磁铁电路曲线与正常电磁铁标准曲线的标准差越大，电磁铁发生故障的可能就越大。当采集得到的电磁铁电流与正常状态下电磁铁电流的标准差大于预警值时，可对该套门锁发出故障预警。
Abstracts:
［Objective］ Platform door EL (electromagnetic lock) is one of the key components of platform doors in urban rail transit station. EL malfunctioning shall directly affect line operation safety and the normal passage of passengers on the platform. In the development trend of equipment intelligent operation-maintenance, it is necessary to conduct in-depth research on fault diagnosis and prediction methods of platform door EL. ［Method］ The working principle of platform door self-holding EL system is briefly described, and the impact degree of eight sub-type faults in three main-category faults on the normal operation of self-holding EL is analyzed. The current characteristics during electromagnetic action and faults are studied. The three fault conditions of core stuck, core not falling in place, and core suction displacement are further investigated. By comparing the electromagnetic current collected under various fault conditions with that collected under normal condition, the characteristics of the electromagnetic current under this fault condition are obtained. By comparing the standard deviation of the electromagnetic circuit curve under fault conditions with that under normal condition, the fault diagnosis and prediction of the self-holding EL system are realized. ［Result & Conclusion］ The larger the standard deviation between the electromagnetic circuit curve under fault conditions and the normal electromagnetic standard curve, the greater the possibility of electromagnetic failure occurring. When the standard deviation between the collected electromagnetic current and the normal electromagnetic current is greater than the early-warning value, a fault early-warning can be issued to the door lock set.
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