Automatic Railway Level Crossing

AUTOMATED UNMANNED RAILWAY LEVEL CROSSING Abstract: In the rapidly flourishing country like ours, accidents in the unmanned level crossings are increasing day by day. No fruitful steps have been taken so far in these areas. The objective of our project is to provide an automatic railway gate at a level-crossing replacing the gates operated by the gatekeeper. It deals with two things. Firstly, it deals with the reduction of time for which the gate is being kept closed. And secondly, it provides safety to the road users by reducing the accidents.
By employing the automatic railway gate control at the level crossing the arrival of the train is detected by the sensors placed near to the gate and transmits the information to the gate controller via wired or wireless. Hence, the time for which it is closed is less compared to the manually operated gates. The operation is automatic i. e. , error due to manual operation is prevented. By employing the automatic railway gate control at the level crossing the arrival of train is detected by the sensor placed on either side of the gate at about 3km from the level crossing.
Hence, the time for which it is closed is less compared to the manually operated gates and also reduces the human labour. This type of gates can be employed in an unmanned level crossing where the chances of accidents are higher and reliable operation is required. Since, the operation is automatic error due to manual operation will be prevented. Once the arrival of the train is sensed, the sensed signal is sent to the microcontroller via, wired or wireless transmission and it checks for possible presence of vehicle between the gates.

Subsequently, buzzer indication and light signals on either side are provided to the road users indicating the closure of gates. Once, no vehicle is sensed in between the gate the motor is activated and the gates are closed. But, for the worst case if any obstacle is sensed it is indicated to the train driver by signals (RED) placed at about 1km, so as to bring it to halt well before the level crossing. When no obstacle is sensed GREEN light is indicated, and the train is to free to move. The departure of the train is detected by sensors placed at about 1km from the ate. The signal about the departure is sent to the microcontroller, which in turn operates the motor in reverse way and opens the gate. Thus, the time for which the gate is closed is less compared to the manually operated gates. Also reliability is high as it is not subjected to manual errors. Components : IR sensors or Vibration sensors, Microcontroller, L293D(driver IC), Stepper motor, Wireless Transmitter and Receiver, power supply. HARDWARE IMPLEMENTATION Micro Controller Totally 40-pin DIP package manufactured with
CMOS Technology. L293D (motor driver IC) Racially L293D 16DIP /ULN 2003 IC is used to drive the stepper motor. STEPPER MOTOR This is used to open and close the gates automatically when it is rotated clock wise or anticlockwise direction. Stepper motor requires 500m amps current, so use the L293D drivers to drive the stepper motor. SOFTWARE IMPLEMENTATION Keil By 1. B. BHARATH KUMAR REDDY – 113004045 2. P SAMBASIVA RAO – 113004161 3. T. RANGA VINOD KUMAR – 113004207 4. T. SIVA NARAYANA REDDY – 113004205

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