城市轨道交通车载综合里程同步系统高精度里程赋值的关键技术
李洋1俞璞涵2麻全周2
Key Technologies for Highprecision Mileage Assignment in Urban Rail Transit Onboard Integrated Mileage Synchronization System
LI YangYU PuhanMA Quanzhou
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作者信息:1.中国铁道科学研究院集团有限公司城市轨道交通中心， 100081， 北京
2.天津智能轨道交通研究院有限公司， 301700， 天津
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Affiliation:Urban Rail Transit Center, China Academy of Railway Sciences Group Co., Ltd., 100081, Beijing, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2023.10.023
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中图分类号/CLCN:U216.63
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栏目/Col:应用技术
摘要:
目的：鉴于当前城市轨道交通综合检测车的里程定位能力，难以满足多类检测系统的数据分析以及系统间数据耦合分析的需要，因此设计了一种车载综合里程同步系统，并对该系统高精度里程赋值技术进行研究。方法：介绍了车载综合里程同步系统的架构，包括轨枕计数模块、时空同步模块和车载综合管控系统内部的数据处理模块。简述了该系统的工作流程。从多源里程定位技术、里程信号优先级、里程修正和校准算法及里程赋值技术等方面阐述了该系统的关键技术。结果及结论：城市轨道交通车载综合里程同步系统实现了里程高精度校准和赋值功能，提升了综合检测车的采集数据在里程维度下关联分析的可靠性，同时辅助病害的精确定位，进而避免因病害定位精度不足而导致检修人员工作效率低、重复检修等情况，有效节省了城市轨道交通基础设施运维成本。
Abstracts:
Objective: In view of the mileage positioning capabilities of current urban rail transit comprehensive inspection vehicles, the need of data analysis from various detection systems and intersystem data coupling analysis cannot be met, thus an OIMS (onboard integrated mileage synchronization system) is developed, and the highprecision mileage assignment technology of this system is studied. Method: The architecture of the OIMS is presented, encompassing rail sleeper counting module, spacetime synchronization module, and data processing module within the OIMS. The operational workflow of the system is briefly outlined. The key technologies of the system are elucidated, including multisource mileage positioning, mileage signal priority, mileage correction and calibration algorithms, and mileage assignment techniques. Result & Conclusion: The urban rail transit OIMS achieves highprecision mileage calibration and assignment functionality, enhancing the reliability of data association analysis collected by comprehensive inspection vehicles in mileage dimension. It assists in precise defect localization, thus avoiding issues like low work efficiency and repetitive maintenance tasks due to inadequate defect positioning accuracy, and effectively reduces the operationmaintenance costs of urban rail infrastructure.
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