All source mine positioning: a new paradigm for intelligent coal mine positioning service

Mine moving target positioning system provides location-based services for intelligent construction of coal mines. However, most of the traditional mine positioning systems use single or combined communication technologies between positioning beacons and positioning tags with inflexible structure, limited coverage, low robustness and limited positioning accuracy. Using single or combined ranging technology, the optimal ranging technology cannot be selected adaptively according to different usage scenarios. For the position solution algorithm is fixed, the optimal solution algorithm cannot be selected adaptively according to different usage scenarios and signal changes. Hence, a new paradigm for all source mine positioning service is proposed, which can dynamically select the optimal combination of devices that meets current needs from all available positioning signal measurement devices according to the changes of the positioning environment and the target bearing platform. The paradigm can select the optimal combination of algorithms from the available ranging algorithms, positioning solving algorithms and result optimization algorithms adaptively to calculate the optimal position of the target node. In this study, all source mine positioning system architecture is designed, the available positioning signal measurement devices in mines and the types of measurement attribute values that can be used for positioning are discussed, and the functional differences of positioning servers between single mine positioning and all source mine positioning are compared. This paper discusses three key technologies in all source mine positioning service: unified positioning framework technology, which aims to meet the modular, combined and expandable needs of all source positioning; all source positioning information fusion technology, which organizes the measured attribute values to improve positioning accuracy; communication and positioning integration technology, which simplifies the design of all source mine positioning system and improves positioning accuracy through the positioning capability of wireless communication network itself. This paper proposes the implementation architecture of a terminal-edge-cloud based all source mine positioning system in order to fit in with the mainstream construction mode of intelligent coal mine and reduce the implementation difficulty and system cost significantly.