The coal industry has contributed 92.5 billion tons of coal products to the economic and social development during the 70 years of load operation, but it has also brought a series of serious problems during the rapid development. Some coal mines often have high load or even super capacity production and safety production accidents. With the release of General Technical Conditions for Underground personnel positioning System in Coal Mines, the establishment of coal personnel positioning system through uwb ultra-wideband indoor positioning module has become a mandatory industry standard for major coal mining enterprises. Through the implementation of this standard, the intelligent development of coal mine can be realized, the underground safety accidents can be reduced, and the output of coal mine can be increased.

In order to achieve the goal of intelligent coal mine construction, strengthen the deep integration of new generation information technology and coal mine production process, through digital construction. Informatization, intelligent coal mine personnel positioning system safety production control platform, can use the coal mine personnel positioning system "high-tech" is easy to solve many safety problems under the traditional production mode. In the construction process, the collection of location data is an important basis for the platform to realize various application functions. The realization of many applications must rely on the location information. The application of uwb ultra-broadband indoor positioning module technology has turned this dream into a reality.

Why choose coal mine personnel positioning system? UWB technology? Coal mine personnel positioning system is one of the key technologies of intelligent coal mine. In order to curb underground overbooked production and avoid or reduce the occurrence of major accidents in coal mines, the state requires coal mines to be equipped with mine personnel positioning system.

In fact, there is no restriction on the use of specific wireless positioning technology in the newly promulgated General Technical Conditions for Personnel Positioning System in Underground Coal Mines. However, in the main technical indicators of the personnel positioning system standard in coal mine, considering the requirements of comprehensive positioning accuracy and the stability and reliability of coal mine scene positioning, uwb UWB indoor positioning module positioning technology has become the most desirable positioning technology in coal mine positioning system.

At present, UWB, Bluetooth, Zigbee and RFID are widely used in the field of coal mine positioning, and their basic performance is as follows: Therefore, based on the actual data and combined with the information in the above table, it is not difficult to find that compared with other technologies, UWB is more suitable for the AQ standard of coal mine personnel positioning system. UWB has high positioning accuracy, low power consumption, long coverage distance and strong anti-interference ability, which is the only technology in the current mainstream positioning technology in the market that can meet the accuracy requirements. It is very in line with the high requirements of positioning technology in complex mine environment.

UWB coal mine personnel positioning system high-precision positioning system, uwb ultra-broadband indoor positioning module UWB mainly uses three positioning methods: TOA/TOF, TDOA and AOA. Each of the three positioning methods has its advantages and disadvantages. Based on this UWB wireless positioning system is generally made of positioning label, positioning base station and calculation software. By arranging a reasonable number of positioning base stations in a specific area, personnel and vehicles are constantly collected. Positioning labels on assets and tools return the spatio-temporal coordinate data of each element to realize real-time accurate positioning, monitoring, guidance, early warning and other functions of indoor space.

Intelligent personnel positioning system of coal mine is the core technology support for the high quality development of coal industry. Artificial intelligence is the deep integration of artificial intelligence, industrial Internet of Things, cloud computing, big data, robots, intelligent devices and modern coal development and utilization, forming comprehensive perception, real-time interconnection, analysis and decision making, autonomous learning, dynamic prediction, intelligent system collaborative control. It is of great significance to realize the intelligent operation of coal mine development, mining (stripping), transportation, ventilation, washing, security, operation and management, so as to improve the safety level of coal mine production and ensure the stability of coal supply.

High-precision and high-precision UWB coal mine positioning system, in practical application, the precision of up to 10cm coal mine personnel positioning system has strong anti-interference ability and stability, can easily use the complex underground environment of coal mine, help coal mine enterprises to realize intelligence as soon as possible. Digital transformation.

uwb ultra-broadband indoor positioning module coal mine personnel positioning system centimeter-level personnel positioning management, "safety first, prevention first". Coal mine personnel positioning system is an important part of the "six systems" of coal mine underground safety avoidance. At present, underground personnel positioning technology is developing from regional positioning to high-precision positioning, including UWB positioning technology is widely used in coal mine personnel positioning system, forming a safety early warning system, which can realize safety early warning, alarm and environmental monitoring functions according to the real-time trajectory of personnel, to ensure the safety of underground personnel.

The UWB positioning technology of coal mine personnel positioning system is the choice. Due to the limited and irregular space of underground roadway, there are many noises affecting the positioning accuracy, among which the non-line-of-sight error caused by occlusion has the greatest influence. UWB technology has high time resolution, high ranging accuracy, strong penetration, and can theoretically provide centimeter-level or higher positioning accuracy. It has great potential in solving the problem of underground accurate positioning, and has become the first choice for accurate positioning in non-line-of-sight environment. The accuracy of coal mine personnel positioning system can reach 10cm, explosion-proof positioning base station, positioning label, engine software and other core modules, to establish accurate positioning system ecology for coal mine personnel.

Coal mine personnel positioning system UWB positioning principle, coal mine personnel positioning system by the ground supervisor positioning system by the main computer of the ground monitoring center through the data transmission interface and communication optical/cable laid along the roadway regularly installed UWB positioning base station for data inspection and information collection, positioning base station will automatically collect effective identification UWB label information within the effective identification distance. According to the system instruction, the relevant data is transmitted to the ground central station through the transmission network. After analyzing and processing the data information of uwb ultra-wideband indoor positioning module, the personnel (or moving targets such as locomotives) can be dynamically distributed and reflected in real time on the main computer interface to achieve the purpose of digital management of mine safety status.

uwb ultra wideband indoor positioning module personnel positioning system main functions:

1. Real-time monitoring: accurate step by step monitoring of downhole personnel.

2. Find the current position of the person: Input any person's name or number, can immediately display the exact position of the person in the form of a graph.

3. Underground personnel tracking: real-time dynamic display of their whereabouts on the underground roadway map.

4. Statistical query of personnel entering special areas: Query some special areas underground at any time, and list the personnel entering and leaving the area, personnel and entry time.

5. Attendance function: Personnel positioning system provides complete personnel output and well entry record data to achieve attendance function.

6. Two-way alarm and call function: in case of underground emergency, the card personnel can press and hold the alarm button of the sign card to proactively notify the ground system and take emergency rescue plan.

7. Identification card power alarm: when the identification card power supply is too low (the remaining power is less than 3 days), the alarm reminds to replace the battery or charge it in time.

8. System management function: The system management software can assign multiple users with different permissions, so that each user can run the software on the network terminal at the same time. It provides perfect interface and application business logic call for fast business software development.

The personnel positioning system of coal mine is the functional application of uwb UWB indoor positioning module technology in personnel positioning. It is of great significance to solve the problem of safety production of underground personnel, and it is worth protecting the safety production of coal mine, non-ferrous metal mine and other mining companies.