|
We
read news papers very often about the railway accidents happening
at un attanded railway gates. Present project is designed to avoid
such accidents if emplemented in spirit.
this project utilises two powerful
ir transmitter and two receivers ,one pair of transmitter
and receiver is fixed at up side (from the train comes) at a level
higher than human beeing in exact alignment and similarly other
pair is fixed at down side of the train direction
sensor activation time is so adjusted by calculating the
time taken at a certain speed to cross
at least one compartment of standard minimum size of the
indian railway. I have considered 5 seconds for this project
sensors are fixed at 1000 miters on both sides of the gate we call
fore side sensor pair for commong towards gate train and aft
sidesensors for the train just crosse the gate when foreside
receiver get activated, gate
motor is turned on in one direction and gate is closed and stay
closed till train crosses the gate and reaches aft side sensors
when aftside receiver get activated
motor turns in opposite direction and gate opens and motor
stops . Buzzer will immidiately
sound at the fore side receiver activation and gate will
close after 5 seconds so giving time to drivers to clear gate area
in order to avoid trapping between gate. And stop sound after the
train has crossed. Two other indications are provided for station
master to know the status of gate
in case the gate is not closed due to any reason
a red signalling light fixed well before gate is enough to
alarm the train driver to stop the train . The project is simple
emplementation and subject to further improvement.
Based on atmel 89c51 microcontroller.
|
