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分析了影响现有机车信号主体化的主要原因,包括轨道电路传输信息存在邻线干扰、牵引回流干扰、同频干扰、半边侵入等多种影响;站内轨道电路电码化常出现发码时间滞后、码型奇变、侧线岔区无信号、移频轨道电路与交流计数轨道电路结合部易出现掉码等现象。为此,提出采用无线方式实现我国机车信号主体化。采用无线信道传输信息具有数字信号传输可靠性高,误码率低,信号稳定;车-地之间双向传输,信息闭环确认;列车无论在任何区段上机车信号连续显示等优点。本文针对自动闭塞和半自动闭塞行车方式提出了无线机车信号主体化的两种方案,阐述了方案的基本结构,并对方案的先进性、可行性及系统的可靠性和安全性进行了分析。
The main reasons that affect the signalization of the existing locomotive signals are analyzed, including the influence of adjacent line interference, traction return interference, co-channel interference and half-intrusion on the transmission information of the track circuit; the time delay of the code of the track circuit in the station often appears, The pattern of odd changes, no signal on the side of the fork zone, frequency track circuit and the exchange of counting track circuit with easy to appear out of code and other phenomena. To this end, proposed the use of wireless means to achieve the locomotive signal of our country. The use of wireless channel transmission of information with digital signal transmission, high reliability, low bit error rate, the signal is stable; car - between the two-way transmission, the closed-loop information confirmation; train no matter in any section of the locomotive signal continuous display advantages. In this paper, two schemes of signalization of wireless locomotive are put forward for automatic blockage and semi-automatic blockage. The basic structure of the scheme is expounded. And the advanced and feasibility of the scheme and the reliability and safety of the system are analyzed.