Friday, 19 December 2014
HIGH SENSITIVE IR BASED UNMANNED RAILWAY GATE CONTROL USING AT89C51 MICROCONTROLLER
HIGH SENSITIVE IR BASED UNMANNED RAILWAY
GATE CONTROL USING AT89C51 MICROCONTROLLER
ABSTRACT:
Aim of this project is control the unmanned rail
gate automatically using embedded platform. Today often we see news papers very
often about the railway accidents happening
at un- attended railway gates. Present project is designed to avoid such
accidents if implemented in spirit. This project utilizes two powerful IR
transmitter and two receivers, one pair of
transmitter and receiver is fixed at upside (from the train comes) at a level higher
than human being 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, normally 5 seconds.
The sensors are fixed at 1000 meters on both
sides of the gate, we call fore side sensor pair for common towards gate train,
and aft side sensors for the train just
Crosses the gate. When train cross the fore side sensor it gives signal to the gate receiver to close the gate. The buzzer is
activated to clear the gate area for drivers about 5seconds. 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 aft side receiver get activated
motor turns in
opposite direction and gate opens and motor stops .If there is any problem in
the gate means it will operate red signal on both side fro the driver
indication. Train arrival and departure sensing can be achieved by means of
Relay techniques. When the wheels of the
train moves over, both tracks are shorted to ground and this acts as a signal to microcontroller (89C51) indicating train
arrival. RED signal appears for the road user,
once the train cuts the relay sensor placed before the 5Kms before the gate .A buzzer is made on as a
pre cautionary measure for the road users
This
project uses regulated 5V, 750mA power supply. 7805 three terminal voltage
regulator is used for voltage regulation. Bridge type full wave rectifier is
used to rectify the ac output of secondary of 230/18V step down transformer
ADVANTAGES:
1. avoid
man power
2. reducing
train accident
3. more
economic
APPLICATIONS:
1.
control stations
2.
industries
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