Published July 15, 2020 © CERN-OHL

In and out automatic door sensor

PIR Sensor and Arduino, which automatically opens and closes the door by detecting a person or object.

IntermediateWork in progress22,922

Things used in this project

Hardware components

PIR Sensor, 7 m

SG90 Micro-servo motor

RGB LCD Shield Kit, 16x2 Character Display

Rotary potentiometer (generic)

Arduino UNO

Resistor 220 ohm

5 mm LED: Red

Hand tools and fabrication machines

Soldering iron (generic)

Solder Wire, Lead Free

Solder Flux, Soldering

Story

About the project :-

In the Automatic Door Opening System, the main component or hardware is the sensor which detects the persons (well, the motion of the person in our case). For this purpose, we will be using the PIR Motion Detector Sensor.

When you step on the mat, the sensors send a signal to the automatic doors that tells them to open. Other automatic doors operate on optic or motion sensors.... When these optic or motion sensors sense motion nearby, they trigger the automatic doors to open and then close.

All project managers need to make decisions, but good decisions usually come from the use of a logical and rational process. I make this project to enhance my knowledge.

working :-

The servos are the automatic gate which opens without touch and the first PIR sensor is for counting the number of people who entered and the second PIR sensor is for counting the number of people who left the room, at a time only 5 people can enter the room, the lcd display is for displaying the number of people in the room and arduino uno controls the whole gate system.

Materials:

PIR sensor, 2pics,

Servo, 2pics,

Lcd display, 1pics,

Potential meter, 1pics,

Arduino uno, 1pics,

220 ohm resistor, 3pics,

LED(any colour), 2pics,

Project link:

https://www.tinkercad.com/things/017IFDwnJY8-corona-fighter-project/editel

In and out automatic door sensor code

#include <LiquidCrystal.h>
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);
#include <Servo.h>
Servo rservo;
int a=0;
int b=0;
int c=9;
int d=0;
int e=11;
int f=0;
void setup() 
{
  lcd.begin(16, 2);
  Serial.begin(9600);
  rservo.attach(8);
  pinMode(13, OUTPUT);
  pinMode(9, INPUT);
  pinMode(12, OUTPUT);
  pinMode(11, INPUT);
}

void loop() 
{ 
 d=digitalRead(c);
 f=digitalRead(e);  
if(d==1)
{
 f==0;
 delay(2000);

}
 else if(f==1)
{
 d==0;
 delay(2000);
 
}  
  if(a==0)
{
 lcd.setCursor(1,0);
 lcd.print("0 Person"); 
 rservo.write(0);   
 a=1;
 b=0;    
}
 else if((d==1)&&(a==1))
{
 lcd.setCursor(1,0);
 lcd.print("1 Person");  
 rservo.write(45);   
 delay(2500);   
 rservo.write(0); 
 digitalWrite(12, HIGH);
 delay(1000);
 digitalWrite(12, LOW);   
 a=2; 
 b=4;  
}
 else if((d==1)&&(a==2))
{  
 lcd.setCursor(1,0);
 lcd.print("2 Person");  
 rservo.write(45);   
 delay(2500);   
 rservo.write(0);
 digitalWrite(12, HIGH);
 delay(1000);
 digitalWrite(12, LOW);   
 a=3; 
 b=3;
}
else if((d==1)&&(a==3))
{ 
 lcd.setCursor(1,0);
 lcd.print("3 Person");  
 rservo.write(45);   
 delay(2500);   
 rservo.write(0); 
 digitalWrite(12, HIGH);
 delay(1000);
 digitalWrite(12, LOW);      
 a=4;    
 b=2;  
}  
 else if((d==1)&&(a==4))
{
 lcd.setCursor(1,0);
 lcd.print("4 Person");  
 rservo.write(45);   
 delay(2500);   
 rservo.write(0);   
 digitalWrite(12, HIGH);
 delay(1000);
 digitalWrite(12, LOW);      
 a=5; 
 b=1;  
} 
 else if((d==1)&&(a==5))
{
 digitalWrite(12, HIGH);
 delay(1000);
 digitalWrite(12, LOW);       
 lcd.setCursor(1,0);
 lcd.print("5 Person");
 delay(2500);   
 rservo.write(45);   
 delay(2500);   
 rservo.write(0);  
 lcd.setCursor(1,0);
 a=6;
 b=0;  
}  
else if((d==1)&&(a==6))
{
 rservo.write(0);
 lcd.setCursor(1,0);
 lcd.print("Full Capacity");
 delay(2500);   
 lcd.setCursor(1,0);
 lcd.print("                 "); 
 delay(2500);     
 digitalWrite(12, HIGH);
 delay(1000);
 digitalWrite(12, LOW);
  lcd.print("Full Capacity");
 delay(2500);   
 lcd.setCursor(1,0);
 lcd.print("                 "); 
 delay(2500);    
}    
 else if((f==1)&&(b==0))
{ 
 lcd.setCursor(1,0);
 lcd.print("                 "); 
 lcd.setCursor(1,0);
 lcd.print("4 Person");  
 rservo.write(45);   
 delay(2500);   
 rservo.write(0); 
 digitalWrite(13, HIGH);
 delay(1000);
 digitalWrite(13, LOW);     
 b=1; 
 a=4;  
}
 else if((f==1)&&(b==1))
{  
 lcd.setCursor(1,0);
 lcd.print("3 Person");  
 rservo.write(45);   
 delay(2500);   
 rservo.write(0); 
 digitalWrite(13, HIGH);
 delay(1000);
 digitalWrite(13, LOW);      
 b=2; 
 a=3;  
}
else if((f==1)&&(b==2))
{ 
 lcd.setCursor(1,0);
 lcd.print("2 Person");  
 rservo.write(45);   
 delay(2500);   
 rservo.write(0);
 digitalWrite(13, HIGH);
 delay(1000);
 digitalWrite(13, LOW);     
 b=3; 
 a=2; 
}  
 else if((f==1)&&(b==3))
{
 lcd.setCursor(1,0);
 lcd.print("1 Person");  
 rservo.write(45);   
 delay(2500);   
 rservo.write(0); 
 digitalWrite(13, HIGH);
 delay(1000);
 digitalWrite(13, LOW);  
 b=4;
 a=1;  
} 
 else if((f==1)&&(b==4))
{
 lcd.setCursor(1,0);
 lcd.print("0 Person");  
 rservo.write(45);   
 delay(2500);   
 rservo.write(0); 
 digitalWrite(13, HIGH);
 delay(1000);
 digitalWrite(13, LOW);  
 b=5;  
 a=0;  
}
else if((f==1)&&(b==5))
{
 rservo.write(0);
 digitalWrite(13, HIGH);    
} 
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);   
  //Serial.print(a);
  //Serial.print(b);
  //Serial.print(c);
  //Serial.print(d);
  //Serial.print(e);
  //Serial.print(f);
  
  lcd.setCursor(1,1);
  lcd.print("                ");
  delay(100);
  lcd.setCursor(1,1);
  lcd.print("Limit 5 Person");
  delay(1000);
  lcd.setCursor(1,1);
  lcd.print("                ");
  delay(100);
  lcd.setCursor(1,1);
  lcd.print("Stay Home");
  delay(1000);  
  lcd.setCursor(1,1);
  lcd.print("                ");
  delay(100);
  lcd.setCursor(1,1);
  lcd.print("Stay Safe");
  delay(1000);  
}

Credits

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