On December 30, 2017, the Beijing Yanfang Line subway train developed by CRRC Changke Co., Ltd. was officially put into operation. This is the first batch of subway vehicles in China that have reached the world’s highest automation level. It can realize unattended driving functions, and the key system components are independently produced by China. It has completely independent intellectual property rights and represents China’s mechanical, electrical and network control technologies. The highest level in rail vehicle applications.
According to reports, the maximum speed of the train is 80 kilometers per hour, not only fast, but also has a clever “mind”. The train adopts the highest level (GOA4) in the international automation standard (IEC62267) for R&D and design. It can realize automatic wake-up, automatic detection, automatic departure, up and down, accurate stop at the station without the intervention of drivers and crew.
A full set of operations such as automatic opening and closing of the door, even after completing the operational tasks, can also “bath” themselves, maximizing the function of automatic driving. In order to ensure the safety of driving, the train sets multiple “protective nets” to monitor the running status of the trains.
For example, the bogie of the train is equipped with a number of sensors, which can monitor the axle box and the force of the motor in real time, and comprehensively analyze the operational safety of the key components of the bogie. What is more worth mentioning is that the train is loaded with the obstacle detection and derailment detection system independently developed by China. With it, the train can “observe” the situation ahead of the track in advance and carry out targeted operations according to the monitoring results. This is the first time that China has mastered this technology independently, breaking the long-term technological monopoly of foreign companies.