Four IR Sensor Based Automatic Control of Railway Gate using Microcontroller

International Journal of Trend in Scientific Research and Development (IJTSRD)
Volume 3 Issue 5, August 2019 Available Online: www.ijtsrd.com e-ISSN: 2456 – 6470
@ IJTSRD | Unique Paper ID – IJTSRD26634 | Volume – 3 | Issue – 5 | July - August 2019 Page 1109
Four IR Sensor Based Automatic Control of
Railway Gate using Microcontroller
Hay Man Oo1, Ni Ni San Hlaing2, Thin Thin Oo1
1Lecturer, Department of Electronic Engineering, Technological University, Meiktila, Myanmar
2Lecturer, Department of Electronic Engineering, Technological University, Kyaukse, Myanmar
How to cite this paper: Hay Man Oo | Ni
Ni San Hlaing | Thin Thin Oo "Four IR
Sensor Based Automatic Control of
Railway Gate using Microcontroller"
Published in
International
Journal of Trend in
Scientific Research
and Development
(ijtsrd), ISSN: 2456-
6470, Volume-3 |
Issue-5, August
2019, pp.1109-1113,
https://doi.org/10.31142/ijtsrd26634
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ABSTRACT
This paper investigates based on four IR sensor automatic control of railway
gate using a microcontroller system. There are so many railway accidents
happening due to the carelessness in manual operations or lack of worker. So,
this paper describes four IR sensor-based automatic control of railway gate
system for saving precious human lives and preventing major disasters in
railway track. Railway gate may be saved for the road users to prevent
accidents in terms of train speed at a level crossing. Automatic railway gate
control system is an innovative circuit which automatically controls the
operation of railway gates detecting the arrival and departure of train at the
gate. This automatic system can be replaced by the gates operated by the
gatekeeper. The operation using Arduino UNO that integrated with other
circuits involved such as power supply,IRsensors,lightindicators, buzzer, and
gate motors. The servo motor is used to control the open and close status of
the railway crossing gate. The four IR sensors are placed ontherailwaytracks.
The gate is closed when the first one senses the train and is opened when the
second one senses the train. This operation is performed when the train is
coming from the left side of the gate. When the train is coming from the right
side, the third and fourth sensors is performed in the same operation. The red
LED is HIGH when the gate is closed and the green LED is HIGH when the gate
is opened. This system is based on software programming to operate the
hardware structure. Program for four IR sensor-based automatic control of
railway gate system is based on Arduino UNO with C++ language. The main
function of the design is Arduino UNO.
KEYWORDS: Arduino UNO, Servo motor, IR sensor, LED, Buzzer
I. INTRODUCTION
In the rapidly flourishing countries accidents in the
unmanned level crossing and due to obstacle on track are
increasing day by day. No fruitful have been taken in this
area. Generally, there aremanualgate controlsystemswhich
are maintained by the person. As vehicles are increasingday
by day, it has become more difficult to control the gate
manually. The main problem around railway crossingisthat
the motorists drive the crossing the gates while they are
down. So, more efforts are required for railway crossing
safety. To avoid the accidents at railway crossing, automatic
and independent railway gate system is the most suitable
and convenient. In many places, train collisions happened.
So, there were many negative effectson notonlythefinances
of the country but also losses of the people lives. Therefore
more convenient ways for the railway gate control system
are needed so that train collisions never occur anymore.
II. System Block Diagram
To solve the problem, these four IR sensor-based automatic
control of railway gate using a microcontroller system is
very convenient. The system for this paper is constructed
with the IR sensor for the input section and servo motor for
the railway gate. The input section involves four IR sensors.
The 5 V DC power supports the Arduino. When the train
passes the sensors, the signal is reached to the
microcontroller. That causes the functions of the red LED,
the green LED, buzzer and servo motor. This output section
involves two servo motors for the railway gate, red and
green LED for the light indicator and buzzer. When the train
crosses the first sensor, the red LED and buzzer are ON and
the gate is closed. And then, that crosses the second sensor,
the green LED is ON and the gate is opened. This operation is
performed when the train is coming from the left sightof the
gate. The third and fourth sensorsare performed in thesame
operation when the train is coming from the right sight.
Fig1: Overall Block Diagram of The System
IJTSRD26634

International Journal of Trend in Scientific Research and Development (IJTSRD) @ www.ijtsrd.com eISSN: 2456-6470
The flowchart shown in Fig.2 is for the operation of the
system. In this system, Arduino UNO is used as the control
system consists of
Step 1 : Start
Step 2 : Initialize the two servo motors are 90º
Step 3 : Initialize the four IR sensors
Step 4 : Initialize green LEDs in the light indicators are
HIGH
Step 5 : Check 1st and 3rd IR sensors. If 1st and 3rd IR sensors
are LOW, red LEDs are HIGH and green LEDs are
LOW in the light indicators. Then, Buzzer is ON and
the two servo motors are 0º.
Step 6 : Check 2nd and 4th IR sensors. If 2nd and 4th IR sensors
are LOW, green LEDs are HIGH and red LEDs are
LOW in the light indicators. Then, Buzzer is OFF and
the two servo motors are 90º.
Step 7 : Exit
Fig 2: Overall System Flowchart
III. Implementation
A. Software Implementation
The software implementation is the Arduino IDE based
software environment. A program written with the Arduino
IDE is called a sketch. Sketches are saved on the
development computer as text files with the file extension
.ino. Arduino Software (IDE) saved sketches with the
extension .pde. A minimal Arduino C/C++ program consists
of only two functions: setup (): This function is called once
when a sketch starts after power-up or reset. It is used to
initialize variables, input and output pin modes, and other
libraries needed in the sketch. Loop (): After setup ()
function exits (ends), the loop () function is executed
repeatedly in the main program. It controls the board until
the board is powered off or is reset.
Software Implementation for IR Sensor
The software programming language for the IR sensor is
very simple. The setup function followsthedeclarationof the
LED pin is output and the IR pin is input by using to set
pinMode. Besides, it is also declared to begin serial to show
the result on the serial monitor.
pinMode (ledPin, OUTPUT);
pinMode (irPin, INPUT);
Serial.begin (9600);
The loop function includes the code to be executed
continuously reading the IR pin and triggering the LED pin.
While the LED pin is HIGH, the result shows “Object
Detected” on the serial monitor.
digitalWrite (ledPin, HIGH);
Serial.println ("Object detected!");
But the result is showed as “No Object” while the LED pin is
LOW.
digitalWrite (ledPin, LOW);
Serial.println ("NO Object");
Software Implementation for Servo Motor
The programming language is written as the simplest form
so that it is nothing to have any problem to understand. The
setup function for the servo motor is declaredtheorange pin
of the motor is input by using myservo. attach and also
declared begin serial to show the result on the serial
monitor.
myservo.attach (10);
Serial.begin (9600);
The loop function for the servo motor includes reading the
input pin and triggering the output by using myservo.write.
While myservo.write is 0º, the result show “0” on the serial
monitor and the result is showed “90” while myservo.write
is 90º. And the delay time is one second.
myservo.write (0);
Serial.println ("0");
delay (1000);
myservo.write (90);
Serial.println ("90");
delay (1000)
Software Implementation for the System
The software programming for the operation is mainly used
if statement. The setup function for the system is declared

the four IR sensors are the input and the two light indicators
and buzzer are the output by using pinMode. And the two
servo motors are declared by using servo. attach language.
The loop function for this operation includes reading the
input sensor by using digitalRead and triggering the output
by using digitalWrite. For the servo motor, servo. write a
language is used. And the delay time is also included.
f=digitalRead (firstsensor);
s=digitalRead (secondsensor);
t=digitalRead (thirdsensor);
u=digitalRead (fourthsensor);
Software Implementation for the First and Second
Sensors
The loop function for the first sensor is LOW and the second
sensor is HIGH that means the train is sensed by the first
sensor is declared the red LEDs in the light indicators are
HIGH by using digitalWrite. And also declared buzzer which
is the warning alarm for the road users is HIGH and the gate
is closed.
digitalWrite (buzzer, HIGH);
servo1.write (90);
servo2.write (90);
And the loop function for the train is sensed by the second
sensor is declared the green LEDs in the light indicators are
HIGH by using programming language digitalWrite. The
buzzer is LOW and the gate is opened again.
digitalWrite (buzzer, LOW);
servo1.write (0);
servo2.write (0);
Software Implementation for the Third and Fourth
Sensors
The loop function is declared the same operation of the first
sensor is sensed for the third sensor is LOW and the fourth
sensor is HIGH with the programminglanguagedigitalWrite.
digitalWrite (gled1, LOW);
digitalWrite (gled2, LOW);
digitalWrite (rled1, HIGH);
digitalWrite (rled2, HIGH);
When the fourth sensor has sensed the train, the loop
function includes the green LEDs in the light indicators are
HIGH and the red is LOW. And buzzer is also LOW, thegateis
opened again. This is the same operation when the second
sensor is LOW.
digitalWrite (gled1,HIGH);
digitalWrite (gled2,HIGH);
digitalWrite (rled1,LOW);
digitalWrite (rled2,LOW);
Software Implementation for Normal Situation
When no train is coming, all the four IR sensors are HIGH.
The loop function is declared the green LEDs are HIGH and
the red LEDs are LOW. The buzzer is also LOW and the gate
is opened. The use of programming language is digitalWrite
and servo.write.
servo1.write (0);
servo2.write (0);
B. Implementation by Hardware
Fig3: Overall Circuit Diagram of the System
This circuit is constructed with three mainsections. Thefirst
section is IR sensors which are the input section. Thesecond
one is servo motors which are the output section. And the
last one is the microcontroller Arduino UNO. The first and
third IR sensors are placed together at the left side of the
gate and the second and fourth IR sensors are also placed
together at the right side of the gate. But the first sensor is
connected to digital pin 2 and the third sensor is connected
to digital pin 11 of the Arduino board for the gate is closed.
Also again, the second is connected to digital pin3 and the
fourth is connected to digital pin 12 of the Arduino board for
the gate is opened.
The two servo motors are used for the railway gate in this
operation. These are connected to digital pin 9 and 10 of the
Arduino board. And then, the whole system is based on
software programming to operate the hardware structure.
Program for the railway gate control system is based on
Arduino UNO with C++ language. The main function of
design is Arduino UNO. When the train is coming from the
left side of the gate, the first sensor senses this train. This
sensor sends the signal to the microcontroller. The redLEDs
of the light indicators are HIGH at once. Afteronesecond, the
servo motors change 90º that means the gate is closed and
the buzzer is HIGH. This buzzer is the additional operation
for the road users’ safety. And then, the train is crossing in
front of the second sensor again. The signal arrives at the
microcontroller so green LEDs of the light indicators are
HIGH and the servo motors change 0º again that means the
gate is opened. When the train is coming from the right side
of the gate, the third and fourth sensors are performed the
same operation as the first and second ones. The green and
red LEDs in the first light indicator are connected to digital
pin 4 and 5 of the microcontroller and in the next one are
connected to digital pin 6 and 7. Besidestheoutputpin of the
buzzer is connected to digital pin 8 of the Arduino UNO
board.

IV. Results
The operation is constructed with four IR sensors. The first
and third IR sensors are placed together atthe leftsideofthe
gate and the second and fourth IR sensors are also placed
together at the right side of the gate. But the first and third
sensors are connected to digital pin 2 of the Arduino board
for the gate is closed. Also again, the second and fourth
sensors are connected to digital pin 3 of the Arduino board
for the gate is opened. The two servo motors areusedforthe
railway gate in this operation. These are connected todigital
pin 9 and 10 of the Arduino board. The two light indicators
are placed on each other side of the railway gate. The first
indicator is connected to the digital pins 4 and 5. Another
one is connected to the digital pins 6 and 7 of the Arduino
UNO board. The buzzer is connected to the digital pin 8 as
the additional operation.
Result for the First and Second IR Sensors
If the train is coming from the left side of the gate, the
operation is performed according to the first and the second
sensors. At the first, the train is crossed in front of the first
sensor, the loop function declared the two light indicators
show the red LEDs, the buzzer is HIGH and the servo motor
is 90º that means the gate is closed. And then the train is
crossed in front of the second sensor, the loop function
declared the two light indicators show the green LEDs, the
buzzer in LOW and the servo motor is 0º that meansthegate
is opened.
Fig4: Result for the First IR Sensor
Fig5: Result for the Second IR Sensor
Result for the Third and Fourth IR Sensors
If the train is coming from the right side of the gate, the
operation is performed according to the third and thefourth
sensors. The loop function for the third IR sensor LOW is the
same for the first IR sensor. Besides the loop function forthe
fourth IR sensor LOW is the same for the second IR sensor.
Fig6: Result for the Third IR Sensor
Fig7: Result for the Fourth IR Sensors
Result for the Normal Situation
If the nothing train is coming situation, the if the statement
includes the green LEDs are HIGH and the red LEDsareLOW
in the two light indicators, the buzzer is LOW and the servo
motor is 0º that means the gate is opened. This situation is
generally the same as the operation of the second and fourth
sensors.
Fig8: Result for the Normal Situation
V. Conclusion
Four IR sensor-based automaticcontrolof railwaygateusing
a microcontroller system is centered on the idea of reducing
human involvement for closing and openingtherailwaygate
which allows and prevents accidents near the level crossing.
The railway gate is a cause of many deaths and accidents.
Hence, automating the gate can bring about a ring of surety
to controlling the gates. So, automating this process reduces
the chances of the gate failures and reduces the errors made
by the gatekeepers. The accidents are avoided at the place
where there is no person to manage the railway crossing

gates. So, this control system offers an effective way to
reduce the occurrence of railway accidents.Andthiscanalso
contribute a lot of benefits either to the road users or to the
railway management. Since the design is completely
automated it can be used in remote villageswhereno station
master or lineman is present. IR sensors are placed at the
two sides of the gate. It is used to sense the arrival and
departure of the train. This system uses the servo motors to
open and close the gates automatically.
VI. REFERENCES
[1] Dwarakanath S K, Sanjay S B, Soumya G B, Arjun V,
Vivek R: Arduino Based AutomaticRailwayGateControl
and Obstacle Detection System,Volume-5,Issue-5,May-
2016.
[2] Harshul Balani, Charu Gupta, Kratika Sukhwal:
Advanced Safety Application for Railway Crossing,
Volume-3, Issue-12, December-2015.
[3] Joseph Henry: Buzzer, 22-May-2015.
[4] Sankaraiah Siaah, Miza Sajid Ali Baig, Narsappa Reddy:
Automatic Railway Gate Control System Using IR and
Pressure Sensors with Voice Announcement, Volume-3,
Issue-3, July-2015.
[5] Tarun Agarwal: Servo Motor: Basic, Theory and
Working Principle, 2015.
[6] Acy M. Kottalil, Abhijith S, Ajmal MM,AbhilashL J,Ajith
Babu: Automatic Railway Gate Control System,Volume-
3, Issue-2, February-2014.
[7] Allison M. Okamura, Stanford University: Arduino
Programming Language, 2014.
[8] Fakrul Syazwan: Arduino Infrared Collision Avoidance,
28-Mar-2012.
[9] Ahmad Hafizi Bin Mohamad: Automatic Railway Gate
Control By Using Microcontroller, May-2011.
[10] Brian W. Evans: Arduino Programming Notebook, First
Edition, 2007.
[11] Vijay Kumar Peddinti, Light Emitting Diodes, 2006.

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