铁路道口无人值守安全控制系统

Unmanned Safe-control System for Railroad Junction

用数字电路的方法设计了一个铁路道口无人值守安全控制系统。该系统能在无人管理的情况下,在火车到达之前,自动检测到火车到来信号并自动启动执行装置关闭铁路两边的栅门,火车开出后再自动开启。文中,从如何设计实用数字电路,完成自动控制功能的角度,描述了电路的设计方法和步骤。

In the essay,an unmanned safe-control system for railroad junction is introduced,by the way of figure election circuit . No person being on guard,the system can check the arrival signal of trains,start automatically the operating unit to close the fencegate at the sides of the railroad,and open it upon the leave of the trains. From the respect that how to design the practical figure circuit and complete the automatic control,the designing method and procedure of the electric circuit are described in the essay.