(Original title: Northern Jiaotong University's technology assists the Yanfang line driverless four insurance to ensure traffic safety)
North Jiaotong University Technology Helps Yanfang Line "Driving Without Drivers"
"Four Insurances" to Ensure the Safety of Yanyan Line
(Reporter Zhang Hang) The Beijing Metro Yanfang Line officially entered passenger carrier operation yesterday. This is the first fully automated operation system for rail transit with complete independent intellectual property rights in China. The reporter learned that the scientific research achievements of Beijing Jiaotong University have played an important role in ensuring the signal control and comprehensive monitoring of the Yanfang Line. The Yanfang Line has set 41 kinds of operating scenarios, and at most “four insurances†to ensure the safety of driving, departure intervals. It can be shortened to a minimum of 2 minutes, and the acceleration and deceleration are more gentle, giving passengers a quick and steady experience.
According to reports, Beijing Jiaotong University launched the research and development of a communication-based automatic train control system more than ten years ago. The system has reached the standards and requirements consistent with international manufacturers in terms of functions and safety. The school has established a scientific research transformation company - Controlling Technology Co., Ltd. The opening of the Yanyan line, the total integration of the signal system and integrated monitoring system is the control of technology companies.
As Beijing's first "driving without driver" subway, traffic safety is the most concern for the majority of passengers. Wang Wei, Vice President of Traffic Control Technology, said that each car in the Yanfang line has two dead-end cameras. When four cars are in operation, they will upload more than 10,000 data in real time. Once there are exceptions, they will be discovered at any time. Lv Aiguo, the company's Yanfang line project manager, told reporters that they designed 18 normal operation scenarios and 23 abnormal scenes such as fire and obstacle collisions for the train's "driverless" system of the Yanfang line to ensure that the trains respond to various sudden changes. The situation was more than adequate. "The entire system is deeply integrated. The system of the train control center has even achieved the 'four insurance'." Lu Aiguo said that even if all three systems fail, they will seamlessly connect to the fourth system to complete. task.
The "unmanned" Yanfang line is not only safe and secure, but also very efficient. Lu Aiguo said that after the opening of the Yanfang line, the current departure interval is 8 minutes at peak level and 5 minutes at peak time. However, according to their design, the minimum length of the Yanfang line can achieve a 2-minute departure interval. Not only that, because it is "driving without a driver", ordinary subways start at a station from closing the doors to the start of the vehicle, manual operation takes about 15 seconds, and the subway automatically takes only one or two seconds. Accumulation of all stations can significantly save operating time, and therefore also reduce the total number of vehicle inputs, maintenance costs and power consumption. "In operation, automatic driving also avoids artificial emergency braking and other factors. The train operation of the Yanyan line will be more stable."
The reporter learned from the Beijing Jiaotong University that as a featured university in the rail transit industry, the school has effectively served the construction of the capital rail transit. Song Guohua, deputy director of the deputy director of the Science and Technology Department of the school, said that the very common crossroads of subway lines in big cities have very high requirements for the safety of crossing. The safety assessment of more than 80% of subway lines in the Beijing Subway is at the National University of Communications. In addition, Jiaotong University’s rail transit shock absorption and noise reduction technology has also been widely used in rail transit construction in Beijing, Shanghai, and Guangzhou. Text diagram
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