Modular train system

Abstract

Provided is a method of operating a modular train system. The method comprises determining that an approaching train is within a trigger distance from a first train segment. The train has a first velocity in a first direction along a track. The method further comprises causing the first train segment to accelerate to approximately the first velocity. The method further comprises coupling the train segment to a front end of the train while the first train segment and the train are in motion at approximately the first velocity.

What is claimed is: 
     
         1 . A method comprising:
 determining, by a processor, that a train has approached to within a trigger distance from a first train segment, the train having a first velocity in a first direction along a track;   causing the first train segment to accelerate to approximately the first velocity; and   coupling the first train segment to a front end of the train, wherein the coupling is performed while the first train segment and the train are in motion at approximately the first velocity.   
     
     
         2 . The method of  claim 1 , the method further comprising:
 determining that a second train segment is at a rear end of the train;   determining that the train has approached to within a threshold distance away from a next station;   decoupling the second train segment from the rear end of the train; and   causing the second train segment to decelerate such that it comes to a stop at the next station.   
     
     
         3 . The method of  claim 2 , wherein causing the second train segment to decelerate includes sending a deceleration signal to a motor controller to control an electronic motor of the second train segment. 
     
     
         4 . The method of  claim 1 , wherein causing the first train segment to accelerate includes sending an acceleration signal to a motor controller to control an electronic motor of the first train segment. 
     
     
         5 . The method of  claim 1 , further comprising:
 causing doors of the first train segment to close prior to causing the first train segment to accelerate, wherein causing the doors of the first train segment to close includes sending a closing signal to a motor controller to control an electronic motor on the first train segment.   
     
     
         6 . The method of  claim 5 , wherein causing the doors of the first train segment to close further includes sending the closing signal to the motor controller in response to the train approaching within a door trigger distance from the first train segment. 
     
     
         7 . The method of  claim 1 , further comprising:
 calculating the trigger distance based on at least one of the speed of the train and a safe acceleration speed of the first train segment.