A rail automatic block signal system based on the field bus technology is introduced, and its reliability design is explained specially.
介绍一种基于现场总线技术的铁路自动闭塞系统，并就其可靠性设计作了重点阐述。
The foundation of automatic block and cab signal is track circuit.
自动闭塞和机车信号的基础是轨道电路。
The paper gives solutions to the problems with lighting circuit of permissive aspect of block signal of existing automatic block section according to relevant specifications.
通过对现有自动闭塞区间通过信号机容许信号点灯电路存在问题的分析，根据相关规范，提出解决办法。
Signal demodulation of automatic block with audio frequency shift modulated track circuits was implemented with phase-locked loop (PLL) technique and a singe chip microcomputer.
利用锁相环(LL)窄带跟踪特性，与单片机结合，实现自动闭塞系统移频信号解调。
The article analyses the frequency security & stability of signal generator circuit of dispatching equipment of automatic block with frequency shift, and an optimum design scheme is concluded.
本文对移频自动闭塞发送设备信息源电路的频率安全性及稳定性进行了分析，并总结出最佳设计方案。
The article analyses the frequency security & stability of signal generator circuit of dispatching equipment of automatic block with frequency shift, and an optimum design scheme is concluded.
本文对移频自动闭塞发送设备信息源电路的频率安全性及稳定性进行了分析，并总结出最佳设计方案。
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