Application of Strix Mesh Technology in Benxi Digital Mine

The trend of domestic digital mines has become more and more obvious. Following the successful operation of the GPS vehicle intelligent dispatch system in open pit mines, Benxi Iron and Steel Group also used Strix Wireless MESH to build a GPS vehicle intelligent dispatch system. This scheduling system mainly provides intelligent production management and control based on precise positioning, data acquisition, and real-time voice communication for production facilities on the mine to achieve cost reduction, production efficiency improvement, safety and management.

Strix's revolutionary Mesh technology provides high-speed mobile and fast roaming switching capabilities that meet the needs of large-scale wireless networking in open pit mining. Strix Access/One Wireless Mesh Network is a multi-service platform. The network has features such as self-organization, automatic configuration, automatic performance adjustment, and automatic link repair. It supports load balancing and redundant backup functions for high throughput. Voice, video, and other data with low-latency communication features provide a stable and reliable carrier platform.

There are two mining areas in the Shantoushan mining area of ​​Benxi Iron and Steel, and three rock-laying yards. The ore in the mining area is mainly transported by railways. The wireless MESH network mainly covers the mining area and the railway.

The quality of the wireless network determines the performance of the entire system. Therefore, the corresponding performance indicators are proposed for the wireless network in the early stage of the project. For the application environment of the open-pit mine, the wireless device must support multiple hops in the case of 10 hops. Only 40% return throughput is lost. In order to ensure GPS data in real-time, accurate positioning, and voice call effects, from the in-vehicle device ping the central server, the delay of the 32 byte packet is only 15 ms, and the delay of the 1400 byte packet is 25 ms.

In view of the cold and bad weather characteristics of the northeast, in this wireless network design, Strix's new generation of industrial wide temperature equipment MWS series products, such as the MWS100-HSX25, are equipped with two radio frequency cards, including four radio frequency The module, two 802.11A radios and two 802.11G radios, together with the sector antenna can ensure sufficient coverage density and avoid blind spots. HSX25 also has good resistance to impact and shock resistance, and the equipment complies with the ETI 300-192-4 specification T41. E Class 4M3, and Mil-STD-810 standard, the equipment can still work normally in the environment where the power shovel shakes violently. The most prominent performance of this equipment is that it can work normally and stably in the range from minus 45 degrees to a high temperature of plus 75 degrees.

In order to ensure fast switching of vehicles between wireless MESH base stations, this vehicle terminal adopts MWS100-RWOD vehicle-mounted equipment, and MWS100-RWOD achieves rapid switching through dynamic real-time wireless background scanning (Background Scanning). Scan to obtain the uplink link information in the wireless environment, including indicators such as signal strength, signal-to-noise ratio, link performance, and load of the MESH node. The weighted average of the above indicators is used by the MWS to obtain a comprehensive index for each link. , In order to select the main link and the alternative link; when the system detects that the main link is less than the value of the candidate link indicator, the MWS vehicle equipment performs the switching operation and the data link is switched from the main link to the standby Select the link. MWS100-RWOD adopts Strix DMA two-layer MESH protocol, equipment link selection and fast switching only need 50-100ms to complete, the switch between networks is transparent to the end user, and the ability to seamlessly switch is achieved.

The high-quality, high-reliability, low-latency wireless transmission channel of the Strix wireless MESH equipment framework provides a powerful guarantee for the successful operation of the entire GPS vehicle intelligent transmission system and ensures the high-quality operation of the entire system.