??? ?????? ?????? ?? ??? ?? ?? ?? ?? (A Study on Improvement of Collected Data Performance in Real-time Railway Safety Supervisory Platform)

?? ???? ?? ? ??? ?? ??? ?? ??? ??? ?????? ??? ???? ?? ??¡¤?? ??? ?? ??? ???? ??. ??, ??, ?? ? ???? ??? ?? ???? ??? ????, ??? ??? ??? ??? ?? ??? ??? ?? ????? ?????. ???, ?? ?? ??? ???? ????? ?? ??? ?? ??? ???? ??? ?? ?? ??? ????? ?? ??? ???? ??? ????. ???? ?????? ?? 20? ??? ??? ??? ?????? LAB ?? ????? ??? ?? ???? ????. ? ????? ?? ??? ??? ?? ??? ????? ?? ???? ??? ?????, ?? ??? ?? ???? ?? ????? ????? ??? ??? DDS ??? ???? ????? ?????. ? ?? ???? ??? ??? ?? ???? ???? ? 30.4? ???? ?????. ?? ??? ???? ?? ??¡¤??? ???? ??? ???? ??? ??? ??? ????? ????.

Recently, integrated railway safety monitoring and control system, which is a convergence system based on data distribution service for railway safety monitoring and control, is under development. It collects safety data of vehicle, signal, power and safety monitoring facilities in real time and adopts communication middleware based on distributed service for mass data processing. However, in the case of a server device used as an existing control server, the performance of the distributed service middleware can not be exhibited due to low hardware performance due to safety reasons. In the safety control system, 200,000 packets per second were set as the transmission target, but the performance test of the LAB was not satisfied. In this paper, we analyze the characteristics of railway data to improve the data collection performance of existing equipment and apply DDS-based streaming transmission method to the data model of signal facilities and vehicle facilities with large packet amount according to the analysis result. As a result, it was confirmed that the throughput was improved about 30.4 times when the hardware performance was the same. We plan to improve the data processing performance by applying it to real-time railway safety integrated monitoring and control system in the future.