Internet of Things-Based Positioning of Coalmine Personnel and Monitoring of Emergency State

Nowadays, following an accident in coalmines, what affects emergent rescue efficiency is mainly attributable to the uncertain positions and physiological state of coalmine ersonnel. In view of such problem, the wireless communication network and its node structure were designed for coalmines with the aid of the emerging ZigBee technique. With this system, the information on the coalmine personnel is collected by the portable terminal node placed in the miners' lamp cap. Then, the data is transmitted via the underground wireless network to the emergency rescue center on the surface, which helps to reaLize positioning of personnel and monitoring of emergency state and provide assistance for effectively conducting emergency rescue.