Study of vehicle communication-based train control (VBTC)

Author: Ying Lin
Co-authors: Yuemiao Wang, Xiaoliang Wang, Chunming He
Day: Aspect Day Two
Session: Innovation and Future Development (1)

Vehicle-Communication-Based Train Control System (VBTC) is one
of the next generation train control systems based on the vehicleto-
vehicle communication. Unlick the traditional centralized train
control systems which are based on the bidirectional
communications between the on-board controller and wayside
controller, the VBTC system is a decentralized train control system
where train operation is self-disciplined by the on-board
controllers. Based on the operation plan scheduled by the ATS,
the on-board controller of a VBTC system obtains and calculates
essential information, such as the train moving direction, speed
and position data, and movement authority (MA), protecting the
safety movements of train. Limited by the communication
capacity of the radio communication system, communication with
all the other on-board controllers in the network at the same time
is unachievable. Therefore, we propose a vehicle-vehiclecommunication
model which divides all the trains into Direct
Relation Trains (DRT), Indirect Relation Trains (IRT) and None
Relation Trains (NRT), according to their relative positions on the
network. Each train on the network can distinguish its DRTs,
IRTs, and NRTs by the proposed model so that it can
communicate directly with its DRTs, communicate with its IRTs
via its DRTs, and not communicate with its NRTs. As a result, a
train can at least acquire information of two trains in one direction
on the network without overloading the radio communication
system. The vehicle-to-vehicle communication model is verified on
our engineering prototype of a VBTC system. The verification
results indicate that the model can resolve the challenging of the
vehicle-to-vehicle communication in the VBTC system.