Train control right switching method and device under CBTC system

Abstract

The embodiment of the invention provides a train control right switching method and device under a CBTC system. The method comprises the steps that when a handover ZC movement authorization terminal point reaches a handover boundary, a handover ZC sends train information to a takeover ZC; the takeover ZC calculates own mobile authorization and sends the own mobile authorization to the handover ZC;the takeover ZC splices own mobile authorization with the mobile authorization sent by the handover ZC into a first mobile authorization and sends the first mobile authorization to a CBTC train; thehandover ZC splices own mobile authorization with the mobile authorization sent by the takeover ZC into a second mobile authorization and sends the second mobile authorization to the CBTC train; the CBTC train calculates the sending time of the first mobile authorization according to the message serial number, and calculates the sending time of the second mobile authorization according to the message serial number and ZC-ZC communication delay time; and when the maximum safety front end of the train drives out of the handover ZC control range, or the maximum safety front end of the train returns to the handover ZC control range, control right switching is carried out by using the movement authorization with the latest sending time. According to the embodiment of the invention, the securityrisk caused by communication delay between ZCs can be eliminated.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of rail traffic control, in particular to a method and device for switching train control rights under a CBTC system. Background technique [0002] In the current CBTC (Communication Based Train Control, communication-based train control) system, multiple ZCs (Zone Controllers) are generally set in the main line area according to the length of the line. Each ZC has a certain control range, and there is an overlapping area between the control ranges of each ZC, and the dividing point of the control range is called the handover boundary. When a CBTC train enters another ZC control range from one ZC control range, it needs to switch the control right. Among them, the control ZC where the CBTC train is about to leave the area is called the handover ZC, and the control ZC where the train is about to enter the area is called the takeover ZC. [0003] Such as figure 1 As shown, the firs...

AI Technical Summary

Problems solved by technology

In the existing CBTC train control switching process, when the CBTC train judges the mobile authorization used according to its own location, if the CBTC train has already started to use the mobile authorization to take over the ZC, and then the mobile authorization to take over the ZC is retracted, the CBTC train receives and uses The retracted mobile authorization is used for security protection; if the CBTC train reverses / rolls back or the security envelope retracts, the CBTC train restarts using the mobile authorization of the handover ZC, because there is communication between the handover ZC and the takeover ZC Delayed, the movement authorization sent by the handover ZC to the CBTC train has not been retracted, and the CBTC train may pass the actual retracted movement authorization end point when performing security protection based on this, posing a security risk

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