Patent ID: 11926356
Assignee: CHINA ACADEMY OF RAILWAY SCIENCES CORPORATION LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A multi-train operation trend deduction method, comprising:
step S1: receive, on a wireless device, temporary speed limit information, scheduling information, line information, and train status information;
step S2: calculate a train traction parameter, determine an area of space-time scope comprising one or more locations and one or more time periods which is subject to a temporary speed limit, determine a coupling relationship between the train traction parameter and the area of space-time scope which is under the temporary speed limit, and calculate a time saving driving strategy of a first train within a time domain, comprising calculating multi-train operation trend information of a plurality of trains; to determine acceleration, speed, and passing time of each train in a respective interval;
Step S3: according to a running position and speed of the first train, establish a multi-train operation tracking model under a plurality of different block systems;
wherein, in step S3, the multi-train operation tracking model under different block systems includes:
a calculation formula of, x
  
   
    g
    +
    1
   
   ,
   τ
  
  EOA
 

 and, v
  
   
    g
    +
    1
   
   ,
   τ
  
  EOA
 

 under quasi moving block is:, {
     
      
       
        
         
          x
          
           
            g
            +
            1
           
           ,
           τ
          
          EOA
         
         =
         
          
           x
           
            g
            ,
            
             τ
             -
             1
            
           
          
          -
          
           L
           train
          
          -
          
           L
           block
          
          -
          
           L
           safe
          
         
        
       
      
      
       
        
         
          v
          
           
            g
            +
            1
           
           ,
           τ
          
          EOA
         
         =
         0
        
       
      
     
    
   
   
    
     (
     1
     )
    
   
  
 

a calculation formula of, x
  
   
    g
    +
    1
   
   ,
   τ
  
  EOA
 

 and, v
  
   
    g
    +
    1
   
   ,
   τ
  
  EOA
 

 under moving block-absolute braking is:, {
     
      
       
        
         
          x
          
           
            g
            +
            1
           
           ,
           τ
          
          EOA
         
         =
         
          
           x
           
            g
            ,
            
             τ
             -
             1
            
           
          
          -
          
           L
           train
          
          -
          
           L
           safe
          
         
        
       
      
      
       
        
         
          v
          
           
            g
            +
            1
           
           ,
           τ
          
          EOA
         
         =
         0
        
       
      
     
    
   
   
    
     (
     2
     )
    
   
  
 

a calculation formula of, x
  
   
    g
    +
    1
   
   ,
   τ
  
  EOA
 

 and, v
  
   
    g
    +
    1
   
   ,
   τ
  
  EOA
 

 under moving block-relative braking is:, {
     
      
       
        
         
          x
          
           
            g
            +
            1
           
           ,
           τ
          
          EOA
         
         =
         
          
           x
           
            g
            ,
            τ
           
          
          -
          
           L
           train
          
          -
          
           L
           safe
          
         
        
       
      
      
       
        
         
          v
          
           
            g
            +
            1
           
           ,
           τ
          
          EOA
         
         =
         0
        
       
      
     
    
   
   
    
     (
     3
     )
    
   
  
 

a calculation formula of, x
  
   
    g
    +
    1
   
   ,
   τ
  
  EOA
 

 and, v
  
   
    g
    +
    1
   
   ,
   τ
  
  EOA
 

 under virtual marshalling is:, {
     
      
       
        
         
          x
          
           
            g
            +
            1
           
           ,
           τ
          
          EOA
         
         =
         
          
           x
           
            g
            ,
            τ
           
          
          -
          
           L
           train
          
          -
          
           L
           safe
          
         
        
       
      
      
       
        
         
          v
          
           
            g
            +
            1
           
           ,
           τ
          
          EOA
         
         =
         
          v
          
           g
           ,
           τ
          
          EOA
         
        
       
      
     
    
   
   
    
     (
     4
     )
    
   
  
 

wherein, x
  
   
    g
    +
    1
   
   ,
   τ
  
  EOA
 

 and, v
  
   
    g
    +
    1
   
   ,
   τ
  
  EOA
 

 represent an end of authority position (EOA) and a speed at a position of the EOA of a respective train g+1 in the plurality of trains at a current moment τ respectively,, v
  
   g
   ,
   τ
  
  EOA
 

 represents a speed at the position of the EOA of a train g in the plurality of trains at a current moment τ, xg,τ represents the position of the train g in the plurality of trains at the current moment τ, xg,τ-1 represents the position of the train g in the plurality of trains at a moment τ−1, Lsafe is a distance of safety protection, Lblock is a distance from the train g in the plurality of trains ahead to a nearest block district, and Ltrain is the length of the train g in the plurality of trains;
step S4: according to the temporary speed limit information, determine a driving strategy for each tracking train in the plurality of trains that is following the first train, and calculate operations of the plurality of trains based on the driving strategy; and
step S5: send a multi-train operation trend to a driving scheduling platform and control, with the driving scheduling platform, the operations of the plurality of trains according to the multi-train operation trend by imposing an operation constraint on each of the plurality of trains, wherein the operation constraint is configured to limit each of the plurality of trains to a predetermined degree of adjustment of a driving strategy provided by a target speed curve.