Design of personnel positioning system for fully mechanized coal face with low power consumption

Most of the existing accurate positioning systems for underground personnel adopt UWB positioning technology, which is based on the layout mode of personnel positioning card + positioning substation to achieve centimeter-level high precision positioning. However, the existing models ignore the complexity of the working face environment, the influence of the change of the location of the base station installed with hydraulic support on the positioning accuracy, as well as the difficulty of field installation and other factors. To solve the above problems, a low power consumption positioning system for fully mechanized mining face is designed, which adopts Bluetooth positioning and LoRa wireless technology. The locator is used as a beacon and powered by battery, which can be installed in any position of the working face. Personnel positioning card integrates Bluetooth positioning and LoRa wireless technology, and integrates with mining lamp to form information mining lamp; the substation fusion LoRa wireless module is installed at both ends of the fully mechanized face to collect and transmit location information. The system can be compatible with the existing personnel accurate positioning system, and avoid the problems that the existing technology is difficult to solve in the positioning of fully mechanized mining face. It has the advantages of convenient installation, low cost and easy maintenance.