signal relay system的意思|示意

The system takes the monolithic computer AT89C2051 as the control kernel, and the tone and contacts of relay as the signal output.

系统控制核心采用AT 89 C 2051单片机，信号输出为音响和多组继电器开、闭触点。

Relay protection is one of device to respond the fault and abnormal circulate situation of electric power system, to make the breaker action and to send out the signal.

继电保护装置是一种反应电力系统故障和不正常运行状念，并动作于断路器跳闸和发出信号的设备。

The clock signal provided by Global Positioning System(GPS)is widely used in electric power system for relay protection, SOE (Sequence of Events), fault locating, synchronous sampling and so on.

GPS同步时钟信号已在电力系统的继电保护、事件顺序记录、故障测距、同步采样等诸多领域获得重要运用。

Multi-jump connection radio communication system and source station, relay station, destination station and control signal.

多跳连接无线通信系统及源站，中继站，目的站和控制信号。

In addition the system not only can test time of the time relay, but also can test the signal frequency.

该系统除了能够测量时间继电器时间段外，还可以测试信号的频率等。

Therefore it is necessary to perfect the existing relay equipment based on the rule of fault-safety in order to achieve the function of railway signal computer-based interlocking control system.

操作表示机是计算机联锁系统中关键的人机界面设备，硬件上利用继电器组成的逻辑电路，实现双机热备的倒机逻辑控制和设备接口电缆的动态切换。