The train is equipped with "eye" seconds to identify obstacles, "virtual formation" technology to shorten passenger waiting time, and snow elements in the carriage highlight the atmosphere of the Winter Olympics... Since the trial operation of the western section of Beijing Metro Line 11 (Winter Olympic Games Line), it has made its debut with science and technology. Behind the train that undertook the "special" traffic service task for the Beijing Winter Olympics, a set of urban rail transit signal system played an important role. Gao Chunhai, the leader of the signal system research and development team and chairman of Traffic Control Technology Co., LTD., talked about the scientific and technological innovation and talent force behind Beijing Metro Line 11.

On December 8, 2021, TCT obtained the pilot operation authorization certificate of the new generation of "Vehicle-Vehicle communication + autonomous sensing system", providing a better solution for the urban rail transit industry to build new lines and transform existing lines. Gao Chunhai introduced that the "vehicle-vehicle communication" is upgraded from the "vehicle-ground-vehicle" communication, which streamlines the circulation link of communication data from the train to the ground and then to the middle of the train. This means that the train's location, speed, movement authorization and other information no longer need to be forwarded through the ground, each train can become its own "conductor".

The autonomous perception system uses radar and machine vision to perceive and identify the surrounding environment, including trains, personnel and obstacles in the track area ahead, with high reliability, so as to realize clearance detection without driver participation in the case of failure, and ensure driving safety to the maximum extent. Gao Chunhai gave an image example: the autonomous perception system can see an obstacle within 300 meters in front of it with one "eye".

"In our previous experiments, we simulated a breakdown in the roof of the tunnel ahead of the train. The autonomous sensing system immediately detected this anomaly, gave an early warning and controlled the vehicle to brake."

What can these high-tech enabled intelligent systems bring to the industry and passengers? "It can further improve the level of operational safety, improve transportation efficiency, improve the quality of passenger service and reduce operating costs." Gao Chunhai said.

As a "safety officer" of the train, the autonomous sensing system can tirelessly "observe" the surrounding environment in an all-round way in the case of unmanned driving, which will greatly reduce the safety risks caused by foreign body intrusion in the track area, the encroachment of operating vehicles, and the degradation of the signal system.

On the basis of vehicle-vehicle communication, the train will also achieve "virtual grouping" in the future, that is, the front and back trains are not physically connected, but the trains are virtually connected together, making the operation more flexible and effectively optimizing the travel experience of passengers.

"Trains can be separated and combined online according to demand. During peak hours, trains can be formed into virtual marshalling to provide high capacity. During peak hours, trains can be automatically unmarshalled and small marshalling runs at low intervals to reduce passenger waiting time." Gao Chunhai explained that such a design can also effectively reduce operating costs and reduce energy consumption.

It is reported that Beijing Line 11, as the Beijing Winter Olympics branch line, is also the first national smart subway demonstration project responsible for Beijing Infrastructure Investment Co., LTD.

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