Structure Design And Energy Consumption Analysis Of Tunnel Laser Deicing Inspection Device

With the rapid improvement of infrastructure construction capacity,the railway and highway industries have ushered in the peak period of development.At present,the total amount of tunnel construction in our country has exceeded more than 50000,and due to the aging of the tunnel top resulting in water seepage occurs frequently,under the condition of the low temperature in the tunnel,extremely easy to form ice cones,which will continue to increase and increase with water seepage,a serious threat to the normal safe operation of equipment and vehicles in the tunnel.Therefore,the removal of the ice pick on the tunnel top wall becomes the primary task of daily maintenance.In this paper,a non-contact laser deicing inspection device is designed,which can automatically inspect,identify and remove the ice pick on the tunnel top wall on the track of the tunnel side wall.By using Solid Works software,the overall structure of the tunnel laser deicing inspection device is designed modularized,which are respectively track module,basic platform and working module.The device is compact and reliable,covers an area of small,high inspection efficiency,the whole device is driven by motor,rack and pinion drive,equipped with anticollision device,lighting and display screen,the movement state of the device and the tunnel environment for real-time monitoring.Based on binocular vision technology,the target identification and positioning technology of laser deicing inspection device in tunnel was studied,so as to realize the effective recognition and three-dimensional positioning of the ice pick on the tunnel roof wall.The binocular stereo vision system was built,the target image was partition by K-means clustering algorithm,and various edge feature extraction methods were compared.The ice pick was recognized by external contour feature recognition method.Based on the spatial positioning principle of binocular camera,the ice pick target was located by SURF algorithm.The process of laser deicing is simulated and analyzed by combining the function of laser on object and the basic theory of heat transfer.The concrete wall irradiated by 40 W laser under special circumstances is analyzed to ensure that the tunnel wall will not be damaged in the process of laser heating deicing.The melting penetration depth and time of 200 s icicle irradiated by laser were simulated when the initial temperature of icicle was different,the distance between laser and icicle was different and the ambient wind speed was different,and the deicing energy consumption was calculated.A test prototype of tunnel laser deicing inspection device was built.When the initial icicle temperature,the distance between laser and icicle and the ambient wind speed were changed respectively,the deicing energy consumption of tunnel laser deicing inspection device was tested and compared with the simulation results.It was found that the lower the temperature,the farther the distance between the two and the greater the wind speed,the longer the time it took to melt through the quantitative volume of ice.The more energy required,the higher the deicing energy.The laser deicing inspection device designed in this paper provides a certain theoretical basis for the application and development of intelligent deicing equipment in tunnel.