上海轨道交通2号线车站无线接入点信号强度分布问题研究
吴磊1邵跃堂2杨明来1
Research on Wireless AP Signal Intensity Distribution at Stations on Shanghai Metro Line 2
WU LeiSHAO YuetangYANG Minglai
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作者信息:1.上海应用技术大学轨道交通学院，201418，上海；
2.上海工程技术大学电子电气工程学院，201620，上海
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Affiliation:School of Railway Transportation, Shanghai Institute of Technology, 201418, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2019.03.025
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中图分类号/CLCN:U231.7
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栏目/Col:研究报告
摘要:
针对上海轨道交通2号线车站内易出现无线接入点(AP)信号故障的情况，选取该线路张江高科站和金科路站作为研究对象，对AP信号强度分布进行了分析，并找出产生通信故障的原因，并提出解决措施。采用专业软件建立车站模型，通过分析得到仿真数据和实测数据相吻合,验证了模型的正确性。利用模型仿真场强分布，分析了车站内AP信号随距离变化的分布特点。分析了AP在有车和无车时的信号强度变化情况以及两车站内AP信号强度分布的相似性。同时根据理论分析得到AP信号受干扰的原因，并从降低干扰源、切断干扰路径等方面提出一系列解决措施，以保障良好的通信质量。可为其他车站的AP信号强度分析和通信故障分析提供参考。
Abstracts:
Aiming at the occurrence of AP (access point) signal failures at stations on Shanghai metro Line 2 , based on the cases of Zhangjiang High-tech Station and Jinke Road Station , the distribution of AP signal intensity is analyzed to identify the communication failure and propose correct solutions. Then, a station model is established by using professional software, and an analysis shows that the simulation data are in good agreement with the measured data, thus confirming the correctness of the model. Next, the model is used to simulate the distribution of field strength, and analyzed the distribution characteristics of AP signal with distance variation at the stations. The similarity of AP signal strength changes when trains stop or not stop at station , and the similarity of AP signal intensity distribution between two stations are analyzed, the reasons for AP signal interference are detected by theoretical analysis, thus a series of measures are proposed to ensure the communication quality by reducing the interference sources and cutting off the interference path. This research provides a reference for AP communication failure analysis at other metro stations.
引文 / Ref:
吴磊，邵跃堂，杨明来.上海轨道交通2号线车站无线接入点信号强度分布问题研究[J].城市轨道交通研究，2019，22（3）：106.
WU Lei，SHAO Yuetang，YANG Minglai.Research on Wireless AP Signal Intensity Distribution at Stations on Shanghai Metro Line 2[J].Urban mass transit，2019，22（3）：106.
WU Lei，SHAO Yuetang，YANG Minglai.Research on Wireless AP Signal Intensity Distribution at Stations on Shanghai Metro Line 2[J].Urban mass transit，2019，22（3）：106.
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