30-09-2010, 02:58 PM
track railway gate controlling using 8051 microcontroller
abstract
the project designed for single track railway gate controlling using 8051 microcontroller to avoid railway accidents happening at unattended railway gates. This project utilizes two powerful IR transmitters and two receivers; one pair of transmitter and receiver is fixed at side from where the train comes at a level higher than a human being in exact alignment and similarly the 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. We have considered 5 seconds for this project. Sensors are fixed at 1km on both sides of the gate. We call the sensor along the train direction as ‘sensor1’ and the other as ‘sensor2’. When sensor1 gets activated, the gate motor is turned on in one direction and the gate is closed and stays closed until the train crosses the gate and reaches sensor2. When sensor2 gets activated motor turns in opposite direction and gate opens and motor stops. A red indicator light glows immediately after the sensor1 gets activated & the gate remains closed till the train reaches the sensor2.Then the gate opens & a green light glows as an indication for the motor drivers to cross the gate without the fear of train accidents.
