Strix first launches the wireless ring network communication system solution for coal mining face
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With the increase in communication requirements of coal mines, the existing wired communication can no longer meet the needs of coal mine development. Due to the complex working environment in coal mines, the wired monitoring system is difficult to deal with gas, coal dust, fires, and ground pressure due to its own limitations. The comprehensive, effective and flexible monitoring of mine environmental parameters such as temperature, wind speed, etc. that have an important impact on the safety of mine production will inevitably leave a large number of hidden safety hazards. The establishment of a mine wireless communication system can be very effective in areas that are difficult to monitor by wired monitoring systems. Effective, real-time and flexible monitoring, and further combining wired and wireless systems to construct a unified, optimized, and shared comprehensive mine safety information system will greatly improve the safety production level of the entire mine.
The mine wireless communication system is “ready to use”. It can build a mobile communication network in the mine anytime and anywhere to facilitate mobile access. The monitoring data can be sent to the ground monitoring center in real time, which greatly improves the efficiency of scheduling and monitoring; and in the event of a mine disaster In emergency communication, even if the existing communication system is damaged, wireless communication equipment can be used to quickly network, receive and transmit monitoring data, dynamically grasp the distribution of underground personnel and equipment operation, and ensure the ground command center and underground rescue work surface. Real-time communication improves the efficiency of rescue and rescue, safety and rescue, and the effect of search and rescue. At present, mine wireless communication systems mainly include ultra-low frequency through-the-earth communication, intermediate frequency induction communication, VHF leakage communication and other systems, as well as mine honeycomb WIFI broadband wireless communication systems. Due to the poor underground environment, many roadways, and many interference signal sources, most mines currently lack an advanced and feasible mine wireless integrated communication network to meet the high-quality communication requirements in the complex and harsh environment of the mine. However, the long-term use of Shenhua and China Coal Group in many of their open-pit mines and mines has proved that Strix Mesh wireless mesh network can provide mines with a high-performance, multi-service communication platform.
Strix adopts the industry’s original “multi-hop wireless Mesh networking” technology. The common Wi-FiMesh technology in the industry can only achieve wireless networking within 3 hops, and the Strix communication substation can achieve a maximum of 15 hops for Mesh networking, with 10 hops. After the bandwidth can reach more than 10M, the wireless mining area can be realized: in the system layout of the mining area and the mining surface, the sub-stations are completely networked through wireless Mesh technology, without the need to erect optical cables, which facilitates the installation, movement and maintenance of the equipment, especially It is suitable for mining face and tunneling roadway.
Wireless Mesh Ring Network
The Strix wireless Mesh network uses 2.4G+ dual 5.8GHz three-frequency WiFi-Mesh technology, which can realize a 12-hop full wireless Mesh self-healing network. It can be deployed in harsh environments, tunneling roadways, and mining tunnels, and at the same time. In the wireless “grid network”, any single point of failure will not affect the overall operation of the system. The reliability, convenience and mobility of the system are greatly enhanced.
Strix wireless Mesh network is a new type of self-organizing network. It has outstanding advantages such as easy configuration, flexibility to shrink or expand wireless coverage, high bandwidth, and mobility. It can be implemented flexibly in dynamic, harsh, unfamiliar, and unexplored environments. Reliable networking, Strix communication sub-station adopts the industry’s original “wireless/fiber-optic mutual backup” technology, and optical fiber ring network communication can be used as the main link between sub-stations. After the optical fiber link is interrupted, it will automatically switch to wireless The benefits of the Mesh backup link are: dual-link backup makes it possible to ensure the transmission of the communication link in the event of a disaster-induced multi-point fiber failure or multi-point base station failure in the ring network, which further improves the system Disaster redundancy performance. Due to the gap transmission and spatial transmission characteristics of WLAN wireless communication, wireless communication in the disaster scenarios such as roof collapse and water penetration is still possible, and the system’s redundant communication capabilities are further improved.
Wireless/optical fiber as backup for each other
Strix communication substation has industrial Ethernet ring network communication function, multi-hop wireless Mesh function, wireless/fiber mutual backup function, and each communication substation has a built-in backup battery, and can be connected to intrinsically safe wired dispatching telephones, making this The disaster redundancy performance and reliability of the system have been greatly improved. Used in conjunction with the escape capsule, it solves the shortcomings of the existing escape capsule communication system (only fixed line, once the line is damaged, it will become a “blind spot”). The system supports multi-ring and multi-route network redundancy, and supports mutual backup of optical fiber and wireless links. It has powerful system emergency communication and escape capsule communication functions.
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