Research and implementation of remote-control signal transmission methods in tunnel construction

YOU Yusong; YANG Qinghai; JING Liujie; SHEN Zhong

doi:10.11860/j.issn.1673-0291.20240067

Abstract：Addressing the challenges of high communication latency,low reliability,and poor stability in current remote-control signal transmission,this study proposes a multi-link communication architec-ture with low correlation among links.First,the sensing signals and control signals are spectrally sepa-rated according to the characteristics of radio wave propagation,and the attenuation laws of radio waves in different frequency bands under the tunnel scenario are analyzed.Second,for control signal transmission,leveraging finite blocklength coding theory and Little's theorem,the relationships among signal-to-noise ratio,achievable rate,and information frame length under a fixed bit error rate are derived.A low-latency transmission communication model for tunnels is established,and a frame structure tailored for control signal transmission is designed to enable a low-latency communication transceiver.Third,regarding sensing signal transmission,the propagation characteristics of ultra-high-frequency radio waves in tunnels and the correlation between signal strength and communication band-width are used.By referencing a lookup table based on bandwidth requirements,an appropriate signal strength range for sensing signal transmission is determined.Finally,experiments simulating remote-control operations in a factory environment are conducted with a focus on low-latency remote-control signal transmission.Experimental results indicate that the average communication delay of control sig-nal transmission is 0.75 ms,while the communication delay for sensing signal transmission is 200 ms,thereby validating the effectiveness and reliability of the proposed communication architecture and associated technologies for remote-control signal transmission in tunnel construction.