The construction environment of coal mines is harsh, accidents are frequent, and management is complicated. Coal construction companies are facing huge personnel positioning and management problems, and an accurate and efficient personnel positioning solution is urgently needed.
According to the needs of customers, 95power has launched a coal mine personnel positioning solution that meets the new coal safety standards. UWB positioning technology is adopted. UWB positioning base stations are installed and deployed in the areas where the tunnel needs to be located, and UWB is equipped for construction personnel or machinery and equipment. The positioning tag can obtain the precise location of the construction personnel in real time, with a positioning accuracy of up to 10 cm.
Through the coal mine personnel positioning solution, coal mine construction companies can grasp the real-time position of construction personnel in the coal mine tunnel, historical activity trajectory, and the distribution of personnel in the tunnel construction area at any time, and can provide timely emergency rescue in emergency situations to improve the overall coal construction enterprise Production efficiency and management level ensure the safety of construction personnel.
In similar scenarios, UWB positioning technology can also be used for personnel positioning in tunnels, pipe corridors, and underground rail transit.
In the coal mine UWB positioning solution, the UWB tag worn by the construction worker emits its own signal through the ultra-wideband pulse signal, the UWB base station receives the signal, and the distance between the UWB positioning tag and the base station is measured through the flight time of the signal, and then the positioning engine collects different UWBs Locating the distance between the base station and the tag, so as to calculate the current location of the UWB positioning tag, and display it in real time on the large display screen (as shown in the figure below).
Coal mine personnel positioning generally adopts one-dimensional positioning in UWB positioning
1. The positioning of coal mine personnel can generally be achieved by one-dimensional positioning;
2. Install and deploy a UWB base station at intervals of 400 meters to 1000 meters in the mine tunnel of the coal mine, with a positioning accuracy of less than 30 cm;
3. Where there are bends or turns in the mine road, UWB base stations need to be appropriately added for positioning compensation.
New Coal Safety standard coal mine personnel positioning solution consists of: display terminal, UWB positioning engine, UWB positioning base station, UWB positioning tag.
(1) Display terminal: The positioning label coordinates calculated by the UWB positioning engine must be displayed on the display terminal (PC, tablet, mobile phone).
(2) UWB positioning engine: The UWB positioning base station in the tunnel positioning area sends the original position data to the UWB positioning engine through the network in real time, and then the UWB positioning engine runs the positioning algorithm to calculate the coordinate position of the person wearing the UWB positioning tag in real time.
(3) UWB positioning base station: The UWB positioning base station communicates with the positioning tag through the UWB signal, and then solves it through the back-end server-side positioning engine to realize the precise positioning function of the UWB positioning tag.
(4) UWB positioning tags: UWB positioning tags are provided on the personnel and equipment to be located, and the positioning tags emit UWB signals and communicate with the UWB positioning base station so that the tags themselves can be located. The UWB location tag can be a wristband type, a work card type, a module type fixed on a helmet, or a vehicle-mounted type fixed on equipment materials.
(1) Accurate real-time positioning of construction personnel and equipment;
(2) Statistics and management of construction personnel;
(3) Construction personnel or equipment movement track playback;
(4) Electronic fence;
(5) One-click call for help in dangerous SOS;
(6) Early warning/alarm: mainly includes real-time early warning, multiple types of early warning (SOS, low power, offline, stay overtime, fence), multiple early warning methods, hierarchical early warning management, early warning data recording and analysis, etc.
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