TIME SERVICE AND POSITIONING NETWORK SYSTEM FOR UNDERGROUND CHAIN-SHAPED LARGE SPACE IN COAL MINE

The present disclosure discloses a time service and positioning network systern for an undeigtound chain-shaped large space in a coal mine. The system adopts a base station-level network internal time synchronization method which takes an optical fiber time service as a main part and takes a satelli...

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Bibliographische Detailangaben
Hauptverfasser:	WANG, CHUANSONG, LIU, DONGRUN, HAN, LIANFENG, WANG, SHUDONG, LIU, XIN, ZHU, ZHENCAI, ZHANG, CHUANSHENG, JIANG, FAN, LI, LIZHENG, LIU, NIANSHENG, WANG, TAO, ZHOU, GONGBO, GU, DUIFANG, WANG, LIBING, SHI, FUXING
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	EARTH DRILLING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FIXED CONSTRUCTIONS MINING SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:	The present disclosure discloses a time service and positioning network systern for an undeigtound chain-shaped large space in a coal mine. The system adopts a base station-level network internal time synchronization method which takes an optical fiber time service as a main part and takes a satellite time service as an auxiliary part to construct a time service and positioning network system with an unified time within the ad-hoc network base stations, based on the ad-hoc network base stations linearly arranged in the underground chain-shaped large space in the coal mine. Through the network construction, the network stabilization and the network application, the system unifies the time reference of the base station-level network and improves the positioning accuracy of the network application by utilization of the base station-level network internal time synchronization method.