移动闭塞的原理、系统结构及功能（The principle, system structure and function of moving block system）.docVIP

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移动闭塞的原理、系统结构及功能（The principle, system structure and function of moving block system）.doc

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移动闭塞的原理、系统结构及功能（The principle, system structure and function of moving block system）

移动闭塞的原理、系统结构及功能（The principle, system structure and function of moving block system） The principle of moving block technology is expounded. The system architecture of a typical mobile block system based on wireless communication is introduced. The advantages of moving block relative to traditional block system are analyzed. It is pointed out that the train control based on communication will be the development direction of the future train control technology. Keywords mobile block, data communication, on-board controller, area controller Communication based mobile block (MB) technology is the most advanced signal product recognized by the railway and rail traffic signal community worldwide. Represented by Sel2 Trac, the technology has been used for nearly 20 years, and has brought good economic and social benefits to operators. This paper will start with the principle of moving block technology and analyze its system structure and advantages for reference by domestic colleagues. The principle of 1 moving block technology 1.1 subway signal and train automatic protection system In order to ensure the safety of train running, it is necessary to make sure the trains run at certain safe intervals. In the early days, people usually divided the lines into several block partitions, indicating whether the partition or front partition was occupied by train or not, and the train was displayed according to the signal. No matter what kind of signal display system is adopted, there must be a certain number of free partitions for the train safety interval. The signal principle of the subway is also based on this. However, due to the special conditions of the subway, the requirements for safety are more stringent, so the automatic train protection (A TP) system must be equipped. A TP ensures safe and smooth operation of trains by means of safety intervals, overspeed protection and door control. In a partitioned partition, each partition has the maximum speed limit. If the train ent