On-Board Optical Data Communications Network for Train Control

Recently, electronic control equipment has begun to be installed in trains. This equipment is being used to communicate control and status information to allow trains to be operated more efficiently and reliably. However, the use of such equipment causes an increase in the amount of control and monitor information generated on a train, which in turn causes an increase in the amount of wiring required to carry the information. Until now, monitor equipment data have been multiplexed, and metal wire cables have been used, to reduce the amount and weight of wiring used [1].