【Commentary】Wearing a pair of black-framed glasses and a simple ponytail, on June 19th, in the Chengdu South Railway Station Public Works Complex, the "post-95" girl Wan Xin was sorting out the drone equipment and packing up what he needed to go out for shooting that day equipment.
Wan Xin, who had just graduated in 2017, entered the Chengdu Nanqiao Road workshop of the Chengdu High Speed Rail Engineering Section. At the end of 2019, she was selected as the first batch of high-speed rail "flight team" members and began to receive knowledge training on drone flight, system operation, and data information analysis.
After everything is ready, Wan Xin and her colleagues will set off for Chengya K20 section for data collection. As long as they go out to shoot, they will carry more than 20 pounds of UAV equipment, carrying nearly 10 pounds of mobile batteries in the surrounding high-speed rail section of the complex environment to find a suitable location for the drone to take off.
[Same period] (Wan Xin, a member of the "Flight Team" in the workshop of Chengdu Nanqiao Road, Chengdu High Speed Rail Engineering Section)
We are now here at Chengya k20, probably located at Jinma River (nearby). We are now mainly measuring the dangerous trees and dangerous bamboos. There are many tall trees around here, mainly to measure the height of the trees. See if it will Will not fall online. Including (high-speed rail) subgrade, bridge piers, including whether the water will flood the bridge, we have to take a preliminary shot, and then form a photo for analysis.
[Explanation] Wan Xin said that when going out to collect data, the drone's take-off location needs to be selected in an open, open, and flat area. However, due to the unique topographic and climate characteristics of the southwest region, the trees are lush, so find a suitable drone to take off. The environment often needs to go far. Every time they go out, they are faced with the problems of traveling with weight, heat, snakes and insects.
[Same period] (Wan Xin, a member of the "Flight Team" in the workshop of Chengdu Nanqiao Road, Chengdu High Speed Rail Engineering Section)
Walking in the mountains, including the usual homework to climb the mountains, girls must have some inconveniences, these need to be overcome. In addition, there are more mosquitoes in the mountains in summer, and it will be very cold in winter, and the weather needs to be overcome.
[Commentary] After the shooting is completed, Wanxin will send the data back to the background, use the captured pictures to complete 3D modeling, and perform data analysis. Wan Xin said that after 3D modeling, the accuracy can reach 0.01 meters. The images taken by the drone can be transmitted back to the background system for 10 minutes to generate a panoramic image.
As China's high-speed rail lines increase in number and coverage, their safety inspections and routine maintenance are a major and difficult task. Liu Kaixiong, secretary of the party branch of the Chengdu High-speed Railway Engineering Section, said that compared with the traditional manual inspection, the use of drones can carry out all-round inspections around the high-speed rail to provide safety guarantee for the high-speed rail.
[Same period] (Liu Kaixiong, Secretary of Party Branch of Chengdu High-speed Railway Engineering Section)
Within the jurisdiction of our high-speed railway section, there are many mountainous areas. In the routine maintenance process, we have many inaccessible areas, and our workers cannot go. During the inspection process, it is difficult for them to effectively find these hidden safety hazards. , UAV can overcome some of these deficiencies in our inspection.
[Commentary] At present, there are four "pilots" in Chengdu's high-speed rail engineering section who have both flight and data analysis capabilities. They are called "flight teams" on the high-speed rail line and "security inspectors" on the high-speed rail line. As the "flight team" and data analysis team become more and more mature, in the future, more high-speed rail "pilots" will be trained.
He Meikun reports from Chengdu, Sichuan
Editor in charge: [Li Ji]