Application of Vehicular Mounted Ground Penetrating Radar Technology in Subway Tunnel Detection
Vehicle mounted ground penetrating radar technology is used to detect and analyze the characteristics of subway tunnels by the emission and reception of electromagnetic waves,and it plays an important role in ensuring the safety and reliability of subway tunnels.In order to accurately detect the subway tunnel defects and improve the detection efficiency,an on-mounted radar detection system based on Yolov5 model is proposed.Firstly,the signal and image were first denoised through the methods of modifying the ze-ro time,removing direct current(DC),background removal and image gain adjustment.Then,based on Yolov5 object detection mod-el,the SPP-Bottleneck module and feature network pyramid are introduced to improve the performance of the system,the anchor box is adopted to detect the image of the target.The results show that the improved Yolov5 model has a higher F1 value compared to the original model under the same confidence level.In practical applications,the F1,accuracy,and recall average values of the vehicle mounted ground penetrating radar detection system based on the Yolov5 model are 88.4％,87.3％,and 89.5％,respectively.The Yolov5 object detection model has a detection time of 0.3 s,and its efficiency improves by 93.75％,84.2％,and 50.0％compared to the other three detection models,respectively,which has more practical application value.This study solves the problems existing in traditional vehicle mounted ground penetrating radar technology,and it is of great significance for the operation and maintenance of subways.
万方数据
维普
