Safety protection method of CBTC (Communication Based Train Control) system during crossing control area

Abstract

The invention provides a safety protection method of a CBTC system during crossing a control area, which comprises the steps: S1: when the train enters the boundary areas of a first and a second ground ATP systems, the first and the second ground ATP systems mutually transmit the information of access roads R1 and R2 of respective control areas; S2: the first ATP calculates first moving authorization information according to the information of the access roads R1 and R2 and transmits the information to a vehicle-mounted ATP; S3: when the train passes through the boundary point of the boundary area and enters the control area of the second ATP, the vehicle-mounted ATP transmits chain-scission request information to the first ground ATP system and transmits chain-building request information to the second ground ATP system; and S4: the second ground ATP system responses the chain-building request information, calculates second moving authorization information according to the information of the access road R2 and transmits the second moving authorization information to the vehicle-mounted ATP. The invention can ensure that the arrangement of the access road R2 in the boundary point can not be limited; the vehicle-missing phenomenon can not appear when the train breaks down in OB zones; and the cost of the system can be simultaneously reduced.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a safety protection method for trains crossing the boundary of a control area in a CBTC system. Background technique [0002] The urban rail transit train operation control system is a key system to realize traffic command and train operation automation and improve transportation efficiency. In recent years, with the advancement of technology, the system is gradually developing towards a communication based train control (CBTC) system. In the CBTC system, the train crossing the border of the control area is a key safety link for train control. Once a loophole occurs in the control strategy, it will affect the train operation of the entire line and even cause a safety accident. At present, for the processing of this link, CBTC system equipment providers generally adopt such figure 1 The method shown: the route R1 needs to extend a distance OB at the boundary point O, t...

AI Technical Summary

Problems solved by technology

[0004] 1. The setting of the route R2 at the boundary point is limited: it must extend a certain distance to the right at the boundary point; without this distance, it cannot be guaranteed that the train will have enough time to establish a link with the ground ATP2 system; this makes the system There are specific requirements for on-site line conditions, which is not conducive to project implementation;

[0005] 2. Once the train breaks down in the OB section, since the train has not established a link with the ground ATP2 system at this time, the train will be neither controlled by the ground ATP1 system nor the ground ATP2 system, resulting in the phenomenon of "lost train". Dangerous consequences such as subsequent train rear-end collisions occur;

Images