The design and realization of the network are based on an advanced electric wirecommunication system.
设计并实现了利用较先进的电力线通信系统构成的公用数据采集网。
2
It is difficult to maintenance the wirecommunication device in the pit because the ground is wet, cable corrosion is serious and sign al is bad.
由于煤矿井下地面潮湿,电缆腐蚀严重,信号不好,有线通信装置维护困难。
3
However, the SCADA system used mostly nowadays use wirecommunication. Due to damageable and high cost, it is hard to expand and give steady maintenance to the wind-solar hybrid streetlight.