트랜스폰더 태그 난반사로 인한 위치 미검지 개선 방안

Abstract

CBTC system of railroad signal, RF (Radio Frequency) is used for detecting a transponder. RF interference is caused by the external environment, diffused reflection, absorption, scattering and etc. Especially the elevated rail system is more affected by missing a tag and early detection of a tag due to the diffused reflection under external environment, heavy rain, heat wave, heavy snow and etc. during revenue service. To resolve this issue the Difussed reflection protection frame is installed and showed excellent recognition rate. CBTC system utilizing transponder, recognizes a necessity of protect RF diffused reflection and applies the improvement. It should be helpful for improving RF signal loss due to diffused reflection and increasing the rate of detecting a transponder. This action would improve loosing train position, alignment, PSD mismatch and etc. Also it would maximize the reliability and maintainability of the train system and provide more safe train service.