A method for unlocking a protected section based on improved safe operation

Abstract

The embodiment of the invention provides a method for unlocking a protected section based on improved safe operation. The unlocking method comprises the following steps: if the ZC receives an unlocking request for the protected area section sent by the CI, obtaining the train position information; determining the position of the train according to the train position information by the ZC; if the ZC judges that the position is located on the axle counting section of the route terminal and does not enter the protected section, withdrawing the MA to the beginning of the protected section, and transmitting a first response message for the unlocking request to the CI; wherein the first response message is a message allowing the unlocking of the protected area segment. The unlocking method of the protected area section based on the improved safe operation provided by the embodiment of the invention can optimize the unlocking method of the protected area section and further improve the safe operation of the train.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of rail transit, and in particular to a method for unlocking a protection zone based on improving safe operation. Background technique [0002] With the rapid development of communication technology and urban rail transit, communication-based train control system (CBTC system) has become the direction of modern transportation technology research and development, which improves the automation level of train control and reduces the running interval of trains. [0003] In order to ensure the safe operation of the train and avoid accidents caused by the train not being able to stop at the signal machine for some reason, factors such as the braking distance and the line of the train are fully considered, and a protection zone is set after the stop point, that is, the terminal One or two sections behind the signal are protected sections. When the train stop is close to the terminal signa...

AI Technical Summary

Problems solved by technology

[0004] The current CI processing measures are to unlock the protection zone immediately after receiving the stop or the countdown is satisfied, and there will be the following two defects: (1) The CBTC train enters the platform rail or return track, and CI detects that the platform rail or return When the track is occupied, it will trigger the CI to unlock the protection section, and the CI will start counting down. At this time, the movement authorization of the CBTC train will be sent to the terminal of the locked protection section of the route. After the countdown arrives, if the CBTC The train needs to jump forward when the platform is under the mark. If the wheel slips during the jump, the train cannot respond to the brake and cannot stop before the beginning of the protection zone. The train may enter the protection zone, and the train’s first The wheel set has not yet entered but may subsequently enter the protection zone

If the stop information received by CI is incorrect, the train has not actually stopped, but still has speed, and at the same time, VOBC thinks that the end point of MA is still at the end of the protection zone. Considering that the communication delay time between ZC and VOBC is at most 6S, The train may intrude into the unlocked protection zone within 6 seconds, and there is a danger of the train derailing and overturning due to the pull of the switch

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