Research And Implementation On The Data Standardization Of Guangzhou Urban Rail Network

At present, The eight Lines of Guangzhou Metro use " linear control " mode to operation.Their information is mutually unintelligible, which leads to " information islands ". Withincreasing of urban rail lines, the rail traffic construction need to change to mesh network, themanagement of rail traffic network needs to develop to achieve comprehensive deployment,mergency treatment and generating value-added services. To this end, Guangzhou Metrodeveloped the study of " Conductor Platform Architecture Of Guangzhou Rail Line NetworkData Center (referred TCC)" should be buildt. However, each line has data nameheterogeneous phenomenon, data type heterogeneous phenomenon, storage formatsheterogeneous phenomenon etc, the building of urban rail traffic network data center facesmultiple challenges, the research and implementation on the data standardization ofGuangzhou urban rail transit network bear the brunt.Around the research and implementation on the data standardization of rail transitnetwork, the paper researched abroad status of urban rail traffic network standard, gatheredthe literature data of research methods of data standards in all areas, analysed data standardsand isomers mode of the existing urban rail line. At last, the paper proposed a program of railtraffic network data standardization and implemented the program based on the AFCbusiness.Guangzhou rail traffic network data standardization program included the business layer,technology layer and the data element layer. The business layer mainly involved businessmodeling and resource collections metadata standardization. Business modeling includedbusiness division, business processes, business information,it was used for the analysis ofbusiness and isolating of resource collection and the extraction of data elements; Resourcecollection metadata standardization included resource collection core metadata and metadatarules, it was to reach cognitive consensus of resources. Technology layer mainly involveddata set metadata standardization and data table metadata standardization. They achieved astandardized description of each line’s database. Data element layer undertaked the businessand technical levels and were their follow-up, it mainly involved the extraction of data elements, metadata standardization of data elements and coding standardization. Theextraction of data elements extracted data element from the business level and the technicallevel and unified the data element; Metadata standardization of data elements achievedstandardization description of data elements; Coding standardization put forward a proposalfor the systematic data coding of urban rail transit network.In the paper, the implementation process of AFC data standardization included threeaspects. First, analysis urban rail business in a top-down approach; The second was to refineAFC business, and achieve business modeling of AFC; The third was separating the dataelements from business modeling and point table, achieving coding and data element layerstandardization.The paper was the fundamentals of urban rail transit network data center’s infrastructure,it would lay the foundation for data integration and data processing, provide a reference for allother professional standardization of Guangzhou urban rail transit network.