Guardian of "thousand mile eye" in rain
"Tonight, we will focus on whether the TEDS equipment box is rusty and whether the camera is soaked in rain." At 0:10 on July 14, in the waiting room of Chengdu east railway station, Cheng Zhongde, leader of TEDS maintenance team of Chengdu EMU Depot, was arranging maintenance tasks for four members that night.
TEDS equipment, fully known as EMU operation fault dynamic detection system, is mainly used to capture images of EMU Bogies and vehicle bottom components on the line through high-speed camera, and send them back to TEDS monitoring center in real time. The monitoring center personnel can remotely check the operation status of EMU through comparison and analysis of images. Therefore, the equipment is called "thousand miles" of EMU safety Eyes ". At present, the section is equipped with 4 sets of TEDS equipment, which are located on the lines 2 km to 3 km away from Chengdu east railway station, including Chengdu Chongqing line, Chengdu Guiyang line, Xicheng line and Shanghai Chengdu line.
Due to the fact that five high-speed image acquisition cameras at the bottom of EMU captured by TEDS equipment are located in the caisson in the middle of turnout, the surface parts of caisson shell, bracket and column are easily affected by continuous rainfall, which may lead to paint dropping, corrosion and other phenomena, thus losing the protection of cameras. Especially after the rainstorm, if the ballast drainage is not smooth and the lines in the caisson are immersed in the rainwater for a long time, the camera collection effect will be affected, and the electrical components in the caisson will be short circuited, making the whole TEDS equipment failure. In order to ensure the normal operation of the equipment, TEDS maintenance team of this section uses the "skylight" point twice a week to maintain the equipment.
Cheng Zhongde and his team members walked cautiously with a flashlight, wearing yellow vest and relying on the dim light of the flashlight. At about 1:00, they arrived at the work site and began to inspect the high-speed image acquisition camera inside the caisson. Cheng Zhongde and his partner bent down on the track to remove rust and stains on the surface of the caisson, and then slowly open the protective cover of the caisson to check the drainage status of the caisson, check whether the motor in the caisson is running normally, and fasten the electrical circuit, and clean the protective cover and lens of the high-speed image acquisition camera. During this period, the on-site protection personnel shall make a call with the station liaison officer every 3-5 minutes to confirm the running status of the line and do a good job of safety protection.
Rainwater makes the parts of caisson smoother, which increases the difficulty for the original tense and meticulous work. At about 2:00, Cheng Zhongde completed the inspection of the high-speed image acquisition camera in the caisson. He stood up slowly. He couldn't tell whether it was rain or sweat on his body and forehead, and his hands and feet became numb because of the same movement for a long time. However, due to the lack of time, he only stopped for a moment and began to inspect the wheel sensor, junction box and other rail side equipment.
At about 4:00, the work was over, and the staff counted the tools and returned to Chengdu east railway station. Unconsciously, they have been working on the line for more than three hours. In this sleepless night, the guardians of "thousand mile eye" have built up "safety fortress" of EMU Operation with their own actions in a place where the spotlight can't shine, and silently escort passengers to travel safely during the summer vacation.