Navigation positioning and collaborative operation of intelligent safety inspection robots in coal mines
LI Lifeng
NIE Weixiong
YANG Hongfei
SUN Zhenjun
SHANG Shaoyong
YANG Wenbo
WANG Yonggang
HAO Ming
JING Yuan
LIU Xiong
SUN Shiling
QIN Wei
HU Shiqiang
WU Xuping
Abstract：Safety inspection of coal mine shafts is the core link of coal mine safety checks,which is of great significance for achiev-ing safe production in coal mines and ensuring the personal safety of miners.Aiming at the deficiencies of intelligent safety inspec-tion robots in coal mines in terms of positioning accuracy and multi-robot collaboration,a fusion positioning and collaborative opera-tion model for inspection robots based on multi-source positioning information fusion and navigation-following control method is proposed.To address the issues of unstable positioning signals and low positioning accuracy in underground mines,this study ad-opts three positioning systems,namely inertial navigation system,liDAR positioning system and ultra-wideband positioning system,for underground positioning.The data information of the three positioning systems is fused through the extended Kalman filter and weighted fusion to perform the navigation and positioning of inspection robots.In the long and complex underground environment,the inspection of a single robot is extremely difficult and time-consuming.Safety inspections often need to be carried out through the collaborative operation of multiple robots.To achieve more efficient and coordinated multi-robot collaborative operations,the re-search adopts the navigation-following control method for multi-robot formation and improves the navigation-following control method by using the graph theory method based on directed graphs,obtaining an improved navigation-following control algorithm based on graph theory for robot collaborative operation formation.In the simulation experiment,it was proposed that the maximum root mean square error value of the trajectory obtained by the model in the x direction was 0.578 m,the average root mean square er-ror value was 0.295 m,and the maximum root mean square error value in the y direction was 0.155 m.Both had relatively small er-rors,indicating that the proposed model had high positioning accuracy.In the experimental results of different scenarios,the mean maximum value of the x-component position error of the robot using the model proposed in the research in the L-shaped roadway is 0.380 m,and the mean maximum value of the x-component position error in the connecting roadway is 0.442 m.It still has a relat-ively small error,further verifying that the model has superior positioning performance.Furthermore,the research results indicate that after adding obstacles,the maximum offset of the four follower robots in obstacle avoidance is within 1.025 meters,with a relat-ively small error.After obstacle avoidance,the follower robot quickly converges to the ideal trajectory.Both the obstacle avoidance and recovery time are approximately 20 seconds,demonstrating a relatively fast convergence speed.
Keywords：inspection robotnavigation-following control methodmulti-source information fusionnavigation positioningcollab-orative operation
Publication Date：2025-12-20
Online Publishing Date：2025-12-29(First online date of this platform, not the publication date of the document)
Pages：8( 41-48 )