上海城市轨道交通线路级时间系统优化研究
王清婵
Optimization Study of Shanghai Urban Rail Transit Line-level Time System
WANG Qingchan
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作者信息:上海地铁维护保障有限公司通号分公司， 200235， 上海
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Affiliation:Telecom & Signaling Branch, Shanghai Metro Maintenance Support Co., Ltd., 200235, 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.2021.11.015
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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:
简述了上海轨道交通线路级时间系统的架构和现状。对时间系统设备的故障进行分析后发现，二级母钟设备的故障数量最高、存在的问题最多。为了进一步提高上海轨道交通线路级时间系统的稳定性、时间同步的有效性，提出了上海轨道交通线路级时间系统的优化方案，即：删去弱电系统的车站时间同步主机这一层级设备，利用既有传输端口、时间系统主机端口，通过新增交换机的方式来实现车站的时间同步从机直接与系统主机申请校时。经分析，该优化方案能进一步提升时间系统的功能、消除设备安全隐患、降低建设成本、减少设备运维的用工成本，可为城市轨道交通的新线建设、旧线改造提供指导性建议。
Abstracts:
The structure and current status of Shanghai rail transit line-level time system are briefly introduced. After analyzing the faults of time system equipment, it is found that the secondary master clock equipment has the highest amount of faults and existing problems. In order to further improve the stability of the line-level time system of Shanghai rail transit and the effectiveness of time synchronization, an optimization plan for the line-level time system of Shanghai rail transit is proposed, namely: to remove weak current system equipment at the level of station time synchronization host, and by making use of existing transmission port and time system host port; to realize time synchronization of the station by adding a new switch, and the secondary machine directly applies time calibration to the system host. From analysis, the optimization plan can further improve the function of the time system, eliminate hidden equipment safety hazards, reduce construction costs, and reduce equipment operation and maintenance labor costs, while providing guiding suggestions for the construction of new lines and the transformation of old lines of urban rail transit.
引文 / Ref:
王清婵.上海城市轨道交通线路级时间系统优化研究[J].城市轨道交通研究，2021，24(11):65.
WANG Qingchan.Optimization study of Shanghai urban rail transit line-level time system[J].Urban Mass Transit，2021，24(11)：65.
WANG Qingchan.Optimization study of Shanghai urban rail transit line-level time system[J].Urban Mass Transit，2021，24(11)：65.
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