Full
Outline
Aiming at the problem of difficult multi-protocol wireless access caused by the heterogeneous protocols of underground intelligent mine equipment and the harsh communication environments, a VxLAN over 5G multi-protocol transparent access scheme suitable for mine scenarios was proposed based on the special channel constraints and 5G private network transmission technology in underground mines. A unified two-layer virtual tunnel was constructed over the 5G network to directly encapsulate and transmit raw Ethernet frames of mainstream industrial protocols such as EtherCAT and PROFINET, without secondary modification to the protocol stacks of existing mine equipment, which greatly reduces the cost of upgrading and reconstructing underground communication networks. The actual verification was carried out by building a simulated mine underground 5G private network test platform. The results show that the end-to-end average latency of EtherCAT protocol data is 22.508 ms, and the maximum latency is 44.794 ms. The average latency of PROFINET protocol data is 21.007 ms and the maximum latency is 44.477 ms. The latency of both protocol data can stably meet the real-time requirements for scenarios such as condition monitoring of fixed underground mine equipment (latency≤100 ms) and conventional remote control of auxiliary operation robots (latency≤50 ms). However, for strong real-time control scenarios such as mining faces that require millisecond-level synchronization accuracy (latency≤1 ms), the current scheme cannot support it, and needs to be further optimized in combination with 5G URLLC enhancement features. The research results can provide a feasible technical path with low transformation cost and high versatility for the wireless access of multi-protocol heterogeneous equipment in non-coal mines, and provide engineering reference for the refined service bearer of 5G private network in intelligent mines.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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