CCTEG China Coal Research Institute
Engineering Research Center for Technology Equipment of Emergency Refuge in Coal Mine
Beijing Engineering and Research Center of Mine Safe

矿用5G为智能矿山建设提供了高速信息传输通道，基于5G的矿用装备远程控制应用是实现少人化、无人化矿井生产的关键手段。分析了矿用4G、WiFi6应用于矿用装备远程控制中的不足，指出5G技术是实现矿用装备远程控制的必要支撑手段。运用信息物理系统架构研究方法构建了基于5G的矿用装备远程控制应用系统参考架构。以5G+采煤机远程控制为例，研究了5G传输链路的关键技术，梳理了监视监测数据与远程控制数据的信息流。当前5G网络为层三通信方式，而矿用装备远程控制的控制系统与受控设备之间需要进行点对点层二通信，针对该问题，研究了层二隧道构建方法和5G LAN技术，建立了远程控制信息传输的稳定通道。针对现场监视数据的大带宽传输需求与远程控制数据的低时延传输需求，提出了资源预调度与请求调度灵活适配的空口资源分配机制。现场测试结果表明：通过层二隧道共传输数据包13 328个，未出现丢包或接收不成功的现象；端到端时延为11.5～23.8 ms，能够满足矿用装备远程控制的传输需求；RSRP（参考信号接收功率）分布在−93～−53 dB·m之间，SINR（信号与干扰加噪声比）分布在10～38 dB之间，无线覆盖情况良好。矿用5G无线通信系统的可靠性、端到端时延及无线覆盖情况能够满足采煤机远程控制的传输需求。

Mining 5G provides a high-speed information transmission channel for the construction of intelligent mines. The remote control application of mining equipment based on 5G is a key means to achieve less human and unmanned mine production. The paper analyzes the shortcomings of using 4G and WiFi6 in remote control of mining equipment, and points out that 5G technology is a necessary support method for achieving remote control of mining equipment. A reference architecture for remote control application system of mining equipment based on 5G is constructed using the research method of information physics system architecture. Taking 5G+coal mining machine remote control as an example, the key technologies of 5G transmission link are studied. The information flow between monitoring data and remote control data is sorted out. The current 5G network adopts a layer three communication method, and point-to-point layer two communication is required between the control system of remote control of mining equipment and the controlled equipment. In order to solve this problem, a layer two tunnel construction method and 5G LAN technology have been studied, and a stable channel for remote control information transmission has been established. In order to address the high bandwidth transmission requirements of on-site monitoring data and the low latency transmission requirements of remote control data, a flexible and adaptable over the air bandwidth allocation mechanism for resource pre-scheduling and request scheduling is proposed. The on-site test results show that a total of 13 328 data packets are transmitted through the layer two tunnel, without any packet loss or unsuccessful reception. The end-to-end delay is 11.5-23.8 ms, which can meet the transmission requirements of remote control of mining equipment. The RSRP(reference signal receiving power) distribution is between −93 dB·m and −53 dB·m, and the SINR(signal to interference plus noise ratio) distribution is between 10 dB and 38 dB, indicating good wireless coverage. The reliability, end-to-end delay, and wireless coverage of the mining 5G wireless communication system can meet the transmission requirements of remote control of shearers.

天地科技股份有限公司科技创新创业资金专项（2023-TD-ZD005-001，2022-TD-ZD001，2022-2-TD-ZD001）。

李晨鑫. 基于5G的矿用装备远程控制技术研究[J]. 工矿自动化，2023，49（9）：90-97.

LI Chenxin. Research on remote control technology of mining equipment based on 5G[J]. Journal of Mine Automation，2023，49（9）：90-97.