Bidirectional Visitor Counter

This project can be used to count and display the limited number of visitors entering in the room or crowded stores.

IntermediateShowcase (no instructions)10 hours2,009

Things used in this project

Hardware components

Buzzer

Software apps and online services

Arduino IDE

Story

Aim

Our aim is to allow the limited number of passenger getting in the boat so that no extra passenger allowed.

Objective

Sometime it is heard about drowning of boat due to overload of passenger. Our aim is to allow the limited number of passenger getting in the boat so that no extra passenger allowed and the boat is safe from drowning.

Working Principle

In this project there are two IR sensors. Those are: I) entry point IR sensor and II) exit point IR sensor.

Entry point IR sensor works when a person pass through the entrance of gate to get into boat it senses the person and increase the count by 1.

Exit point IR sensor works when the person pass through the exit side of the gate. It sense the person and decrease the value by 1.

But after passing limited number of people through the gate the boat will become full then a warning massage will be displayed on the screen and the buzzer will continuously start beeping.

Code

bham.ino

#include<LiquidCrystal.h>
LiquidCrystal lcd(4, 5, 6, 7, 8, 9);
int in = A1;
int out = A0;
int speaker = A2;
int buzzer = 0;
int count=0;
int led= A4;

void setup()
{
  lcd.begin(16,2);
  lcd.setCursor(1,0);
  lcd.print("!!! WELCOME !!");
  delay(3000);
  lcd.setCursor(1,0);
  lcd.print("BIDIRECTIONAL");
  lcd.setCursor(0,1);
  lcd.print("VISITOR COUNTER");
  delay(5000);
  if(count>=10){  
   lcd.clear();
   lcd.print("!!! WARNING !!!");
   delay(100);
   lcd.setCursor(0,1);
   lcd.print("  BOAT IS FULL");
   delay(200);
   }
  pinMode(in, INPUT);
  pinMode(out, INPUT);
  pinMode(speaker, OUTPUT);
  pinMode(buzzer, OUTPUT);
}
void loop()
{  
  int i;
  if(digitalRead(in) == LOW){
    count++;
    for(i=0;i<2;i++){
      digitalWrite(buzzer, HIGH);
      delay(80);
      digitalWrite(buzzer, LOW);
      delay(80);
    }
    if(count>=10)
    {
    
      count=10;
  
    digitalWrite(buzzer, HIGH);
   
      }
    lcd.clear();
    lcd.print("PASSENGER IN");
    lcd.setCursor(0,1);
    lcd.print("BOAT:  ");
    lcd.print(count);
    delay(800);
  }
  if(digitalRead(out) == LOW){
    count--;
    for(i=0;i<2;i++){
      digitalWrite(buzzer, HIGH);
      delay(80);
      digitalWrite(buzzer, LOW);
      delay(80);
    }
    if(count<=0)
    {
      count=0;
      }
    lcd.clear();
    lcd.print("PASSENGER IN ");
    lcd.setCursor(0,1);
    lcd.print("BOAT:  ");
    lcd.print(count);
    delay(1000);
  }
  
  if(count<=0)
  {
    lcd.clear();
    digitalWrite(speaker, LOW);
    lcd.clear();
    lcd.print("NO PASSENGER IN THE BOAT");
    lcd.setCursor(0,1);
    lcd.print(" BOAT ");
    delay(200);
  }
   if(count>=10){  
   lcd.clear();
   lcd.print("!!! WARNING !!!");
   delay(100);
   lcd.setCursor(0,1);
   lcd.print("  BOAT IS FULL");
   delay(200);
   }
  else
  
    digitalWrite(speaker, HIGH);
  
}

Credits

Shubham Kumar

Posted by

Soumyadeep Saha

Thanks to SOUMYADEEP SAHA,SUBRATA SAHA,NILADITYA.

Bidirectional Visitor Counter