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A Tracking Method of Urban Rail Train Based on Speed ​​Tracking

An urban rail train and speed technology, which is applied in railway car body components, railway signal and safety, railway traffic management, etc., can solve the problems of unsatisfactory tracking effect of preceding and following vehicles, improve efficiency and reduce time spent and distance, the effect of increasing the efficiency of pit stops

Active Publication Date: 2020-04-28
TIANJIN JINHANG COMP TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in fact, the front car may not be stationary, and it is impossible for the front car to change from a moving state to a static state in an instant. The tracking effect of the front car and the rear car is not ideal.

Method used

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  • A Tracking Method of Urban Rail Train Based on Speed ​​Tracking
  • A Tracking Method of Urban Rail Train Based on Speed ​​Tracking
  • A Tracking Method of Urban Rail Train Based on Speed ​​Tracking

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Experimental program
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Effect test

Embodiment 1

[0078] Compared with the position-based tracking scheme, the speed-based tracking scheme can effectively improve the efficiency of interval tracking and pit stop efficiency.

[0079] For interval tracking efficiency, suppose a simplified version of the train tracking model, assuming that there are two cars A and B on the line, A car is the front car, B is the rear car, and the speed of A car received by B car at time T is V A , the speed of car B is V B , the maximum deceleration of the vehicle is a 1 , the maximum deceleration of ATO controlled vehicle is a 2 , the communication processing delay between the two workshops is t 1 , the brake application time is t 2 .

[0080] At this time, car B calculates the parking distance of car A as:

[0081]

[0082] The parking distance of car B is:

[0083]

[0084] At this time, the position uncertainty value of car A is P A , the position uncertainty value of car B is P B , when parking, consider the safety margin of th...

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Abstract

The invention relates to a method for tracking urban rail trains based on speed tracking. The method is mainly used in urban rail transit, adding the speed information of the preceding vehicle in vehicle-to-ground communication / vehicle-vehicle communication, and recalculating the movement speed based on the speed tracking scheme. Authorization, according to calculation and analysis, when tracking in the interval, the tracking interval of vehicles based on speed tracking is significantly shorter than that based on position tracking, and the tracking interval can be shortened by 20% to 30% when the speed of the front and rear vehicles is the same. In the process of entering the station, the following vehicle can start to decelerate later under the speed tracking method, which reduces the time and distance spent from the start of deceleration to a complete stop, and increases the efficiency of entering the station. According to the analysis, the efficiency can be increased by about 8%. .

Description

technical field [0001] The invention belongs to the technical field of urban rail train tracking, and in particular relates to an urban rail train tracking method based on speed tracking. Background technique [0002] In rail transit, in order to ensure the safety of trains, it is necessary to ensure that the trains run at a certain safe interval, so the blocking technology is used. Signal occlusion is basically divided into three categories, namely fixed occlusion, quasi-mobile occlusion and mobile occlusion. In the fixed block system, the system cannot know the specific position of the train in the zone, so the starting point and end point of the train braking are always at the boundary of a certain zone. Quasi-moving block uses the track circuit to judge the zone occupancy and transmit information. The starting point of train braking can be extended to the place where it can be safely braked, but the maximum target braking point of the rear vehicle must still be outside ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61L27/00B61L27/04
CPCB61L27/04B61L27/20B61L27/40
Inventor 袁通刘帅孙寿龙付观华安志凯
Owner TIANJIN JINHANG COMP TECH RES INST
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