Notes

Write a note in this arABSTRACT
The objective of this paper is to provide
an automatic railway gate control at a level
crossing and track switching at a junction. It
deals with two things. Firstly, it deals with the
reduction of time for which the gate is being
kept closed. And secondly ,to provide safety to
the road users and the trains by reducing the
accidents.
By the presently existing system once the
train leaves the station, the stationmaster
informs the gatekeeper about the arrival of the
train through the telephone. Once the gatekeeper
receives the information, he closes the gate
depending on the timing at which the train
arrives. Hence, if the train is late due to certain
reasons, then gate remains closed for a long time
causing traffic near the gates.
By employing the automatic railway gate
control at the level crossing, the gate is closed
automatically whenever the train comes and gate
is opened after the train leaves the level
crossing. The arrival of train in either direction
can be identified using sensors placed on either
side of the track. Use of embedded technology
makes this closed loop feedback control system
efficient and reliable. Micro controller
(AT89C51) allows dynamic and faster control.
Liquid crystal display (LCD) makes the system
user-friendly. In case of track switching, two
sensors are placed at the either sides of the
junction where the track switches. If there¶s a
train approaching from the other side, then
another sensor placed along that direction gets
activated and will send an interrupt to the
controller. The interrupt service routine switches
the track.
As the system is completely automated, it
avoids manual errors and thus provides ultimate
safety to road users. The mechanism works on a
simple principle and there is not much of
complexity needed in the circuit.
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