Comparison of the difference between coal mine UWB module personnel positioning technology and traditional positioning, coal mine UWB module personnel positioning technology functions of underground staff positioning system and precautions for use, underground operation is a very dangerous operation, if an underground accident occurs, positioning, emergency rescue is a very difficult thing. In order to meet the underground safety requirements of industries such as coal mines, a personnel positioning system has been developed, which can help enterprises ensure the safety of underground personnel and provide emergency rescue for accidents.
What are the basic functions of the coal mine UWB module underground personnel positioning system? In order to meet the needs of coal mine underground safety production, the mine underground wireless tracking and positioning system should be able to provide coal mine managers with real-time monitoring, access restrictions, attendance operations, real-time communication and other information. Coal mine underground personnel positioning system can locate and monitor the location and status of underground personnel in real time, accurately display the detailed positioning information of underground personnel in real time, and make two-way calls with underground personnel to support underground personnel attendance, query and playback of historical tracks.
The underground wireless monitoring subsystem of the coal mine underground personnel positioning system is mainly composed of a wireless monitoring base station and a mobile station. The mobile station contains employee data, and the base station (BS) communicates with the mobile station (MS) to read the personnel information stored in the mobile station.
1. Functions of UWB module underground personnel positioning system base station (BS):
a. Completing the wireless communication between the base station (BS) and the mobile station (MS) requires the base station to have wireless transceiver functions.
b. Completing the communication between the base station (BS) and the ground data processing center requires the base station to have a serial communication function.
c. To complete the communication control of the mobile station, the base station is required to have a certain data processing capability and data storage function.
2. Functions of mobile station (MS):
a. To complete the wireless communication between the mobile station (MS) and the base station (BS), the mobile station is required to have wireless transceiver functions.
b. Completing the data operation of the base station (BS) command requires the base station to have certain data processing and data storage functions.
Precautions for the use of UWB module personnel positioning system in coal mines:
The design and construction of the coal mine personnel positioning management system can guarantee the life safety of the coal mine personnel, improve the accident handling ability and emergency rescue ability of the coal mine system personnel, and realize the comprehensive improvement of the safety guarantee ability of the coal mine production system.
1. Set up the identification card detection device.
At the exit and entrance of personnel, a device must be installed to detect the normal operation and sexuality of the identification card, and can correctly prompt the card-carrying personnel and related personnel. The prompt information for the normal operation of the identification card shall include (but not limited to): name, card number, type of work and personal avatar information.
It is recommended that large and medium-sized mine detection devices adopt shielded passages (shielded rooms are set up at the wellhead) to ensure that one person can pass through with an identification card. Coal mining enterprises can use single-channel or multi-channel line mode according to the number of people entering the well.
For mines that install the personnel positioning system or plan to upgrade the system, biometric identification (such as face recognition) or other advanced technologies should be used for sexual testing to ensure that the identification card corresponds to the person carrying the card one by one.
2. Strengthen the management of identification card carrying.
When using identification cards (including coal mine leaders and personnel), they must be numbered uniformly, installed in a prominent position, and fixed firmly (for example, fixed on the miner's lamp rope with special tools). Improve the identification card management system and implement one person, one card management. Strengthen daily supervision and assessment, and conduct strict inspections.
UWB (UltraWideband) is a carrier-free communication technology that transmits data using nanosecond to microsecond non-sinusoidal narrow pulses. Some people call it a revolutionary development in the field of radio, and believe that it will become the mainstream technology for short-range wireless communication in the future. Do you know the difference between it and the traditional positioning system, and what is the positioning algorithm for indoor use? Come and see it with me!
Compared with the traditional positioning technology of UWB module positioning technology, UWB ultra-wideband technology is very different from traditional communication technology. It does not require the use of carrier waves in traditional communication systems, but transmits data by sending and receiving extremely narrow pulses in the sub-nanosecond range, resulting in a bandwidth on the order of GHz. Ultra-broadband indoor positioning can be used for indoor precise positioning and navigation in various fields, including people and large items, such as storage of valuables, mine personnel positioning, robot motion tracking, car basement parking, etc.
Compared with the traditional narrowband system, the UWB module ultra-wideband system has the advantages of strong penetration, low power consumption, good anti-multipath effect, high security, low system complexity, and it can provide precise positioning accuracy. Therefore, UWB technology can be applied to the positioning tracking and navigation of indoor static or moving objects and people, and can provide very precise positioning accuracy.
Commonly used wireless positioning measurement methods in indoor environments:
A positioning algorithm based on AOA (Angle of Arriva, Angle of Arrival positioning).
Based on TOA (TimeofArriva, time of arrival positioning) positioning algorithm.
Based on TDOA (TimeDifferenceofArriva, time difference of arrival positioning) positioning algorithm.
A positioning algorithm based on RSS (ReceivedSignalStrength, received signal strength positioning).
Mixed positioning, different algorithms, different positioning accuracy. In order to improve the positioning accuracy, a combination of various technologies can also be used.
