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沈阳铁路局管内所有半自动闭塞区段车站和接近区段均采用微电子交流计数电码化制式。在实际运营中,特别是采用不可靠交流电源(市电、矿电、农电、交流发电机)的车站,机车信号瞬间闪白灯现象尤其突出,严重地干扰了行车秩序。经过深入调研发现,原发码电源盒存在许多设计上的不足,
Shenyang Railway Bureau tube all the semi-automatic block section of the station and close to the section are used micro-electronic exchange count code system. In actual operation, especially at stations that use unreliable AC power (municipal, mining, agricultural, and alternator), the phenomenon of instantaneous flashing of the locomotive signal is particularly prominent, seriously disturbing the traffic order. After in-depth research found that the original code power box there are many design deficiencies,