arth-Wire-Bus (地线通信总线).pptVIP

宝鸡协同通讯网络有限公司 The underground space Communication System Earth-Wire-Bus Underground space features Emergency ?accident structural lineation , limited space, power concentration large?passenger?volumes?and ?internal?space?relative?close At present, the underground space communication is based on the wired communication (Wireless network is the base station cable network) , When wire?rope?damage command?and?control?would have?broken?down. Underground space development 　　 　　 Underground engineering space, Once the Fire and explosion accident，geological?hazards, Water?seeping?through?underground, it will make it more difficulties to the fire?fighting?command?and?communication?. When wire?rope?damage command?and?control?would have?broken?down. Human living space continuously extend, such as the underground?emporium, underground?garage, the subway, railway tunnel, it?will?cause?serious?casualties?and?property?damage Underground space technology Underground Earth-Wire-Bus Communication The earth-wire-bus communication never affected by?sing short, Double Short, sing earthing ,Double Earthing , Single Disconne and environmental damage, and then to transmission Non-fading signal between the earth wire and ground. The?three?major?advantages Green, reliable, flexible. The earth-wire-bus communication line neither be dynamited nor be break off , it is the most reliable communication line in the world. Supply the gap between wire and wireless is call E-Wire Bus technology (Earth-wire-Bus). 　　　　 One distinctive feature is the possibility of using only one earth wires, earth wire and ground. This earth wire is the steel rail, steel pipe, steel truss, drill pipe and so on, a iron communication. Iron communication network 　　Once central switch be burned the star network will breaks down. Earth-wire-bus system use a steel pipe, rail, cables as a Token Ring network architecture communication no central switch .? 　　The laying without excavating surf