当设备异常或检测装置发出事故信号时，PC按程序进行异常事故显示、报警和处理。
PC will give a unusual accident display, alarming and treatment as programmed in case that the conveyer is out of normal order or any accident occurs in the detecting system.
最终查出造成机组事故的根本原因是可控硅励磁装置供电电源无工作状态监视信号及故障报警信号；
The final basic cause that resulted in the failure is no working state monitoring signal and failure warning signal of power supply source of controlled silicon excitation device.
交通信号机作为一种重要交通信号装置，对于提高道路通行能力，减少交通事故有明显效果。
The traffic signal control machine, as a kind traffic signal equipment, plays a important role in improving the traffic capacity of the road and cutting down a traffic accident.
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