Colorful Guizhou Network News "Through the EMU health diagnosis system screen, you can see at a glance the data running in Guiguang, Shanghai-Kunming, Guinan and other high-speed rail EMUs in the process of operation, this year's ice and snow freezing weather is more, the "new" winter driving model can effectively carry out special monitoring and control, to ensure the safety of the EMU winter driving. Lian Guofu, an emergency worker from the emergency command platform of the Guiyang depot of China Railway Chengdu Bureau Group Company, said.
With the opening of the Spring Festival in 2024, Guizhou has entered the freezing weather of ice and snow, and the temperature has reached a minimum of -73. A new low in the past ten years, due to the rugged mountain roads in Guizhou, facing the influence of harsh environmental factors such as extreme cold and low temperature, snowfall and freezing, it is easy to have problems such as abnormal functional status caused by foreign objects hitting or icing on the EMU body and components.
The EMU dispatcher is using the EMU health management system to analyze and check the EMU operation status (Figure: Song Zhaoqiang).
In January 2024, Guiyang Depot will apply winter driving safety technology to the EMU Fault** and Health Management (PHM) system for the first time to ensure the safety of high-speed rail EMUs in spring. The EMU fault and health management system is based on the circuit principle and network collection logic collection variables, through the train-to-ground signal to convert the variables into data upload, the use of computer "big data analysis" function, can be 24 hours to achieve remote real-time monitoring, fault diagnosis and big data analysis of the EMU, timely grasp the abnormal changes in the data during the operation of the EMU, to achieve the EMU fault early warning, convenient for early troubleshooting. On this basis, this year's new "winter driving model" built to ensure the safety of the winter operation of the EMU can effectively reduce the impact of failures such as pantograph arcing, foreign body strike, battery feeding, and abnormal heating of air conditioning during the winter driving process.
It is reported that the system is monitored and controlled by the three major technical departments of the emergency station, the technical room and the research group in real time, and accurately diagnoses the "health" status of the real-time operation of the EMU. The monitoring center can clearly display the national high-speed rail and intercity railway route maps distributed on the map of China through the screen, and display a plurality of dynamic operation points on each line, each point represents a train of EMUs, and when the signal at each point occurs green, yellow, red and other different color changes, representing the different safety status of the EMU.
Emergency command desk personnel and EMU dispatchers are using the EMU health management system to monitor the status of EMUs (Photo: Song Zhaoqiang).
Before the model was introduced, he had to strengthen the monitoring and control of the pantograph, the running department, the battery and other important components of the winter driving in the freezing weather, and strictly prevent the EMU from having problems in the ice and snow section, after the introduction of the module, he only needs to strengthen the observation of the screen display data and signal changes, he can quickly judge the EMU running state, and can quickly provide scientific and effective remote technical guidance to the EMU on-board mechanic when encountering abnormalities.
Vehicle safety is an important part of railway transportation safety, and the update of EMU failure and health management system has built several safety lines for EMUs, making full use of technology to add a safety and warmth to passengers' Spring Festival homecoming.
Correspondents: Li Jinwei, Song Meiyi.
First trial: Luo Yanan Shao Mengyang.
Second trial: Li Baishan.
Third trial: Li Bei.