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PTI(车-地通信)系统在我国城市轨道交通中应用较为广泛,它实现了列车数据从列车到地面控制中心的传输,提高了城市轨道交通的安全程度。本文系统的介绍了PTI的功能、构成及基本工作原理。
PTI system is widely used in urban rail transit in our country. It realizes the transmission of train data from train to ground control center and improves the safety of urban rail transit. This article systematically introduces the function, composition and basic working principle of PTI.