Fire detection using Arduino and flame sensor Leave a comment

Flame sensor is interfaced to arduino to detect Flame. Led and buzzer are interfaced to arduino to indicate the flame.

Hardware components required:-

   1) Flame sensor (Analogue Output)

   2)Arduino

  3)Breadboard

  4)LED

  5)Buzzer

  6)Connecting wires

Step 1: Hard ware connections

• Flame sensor interfacing to Arduino
  • Flame sensor to Arduino
  • vcc -> vcc
  • gnd -> gnd
  • A0 -> A0

• Led interfacing to Arduino
  • LED +ve is connected to 9th pin of Arduino
  • LED -ve is connected to gnd pin of arduino
• Buzzer interfacing to Arduino
  • Buzzer +ve is connected to 12th pin of Arduino
  • Buzzer -ve is connected to GND pin of Arduino

Step 2: Programming

#include<SoftwareSerial.h>
int sensorPin = A0; // select the input pin for the LDR
int sensorValue = 0; // variable to store the value coming from the sensor
int led = 9; // Output pin for LED
int buzzer = 12; // Output pin for Buzzer
void setup() {
// declare the ledPin and buzzer as an OUTPUT:
pinMode(led, OUTPUT);
pinMode(buzzer,OUTPUT);
Serial.begin(9600);
}
void loop()
{
Serial.println(“Welcome to TechPonder Flame Sensor Tutorial”);
sensorValue = analogRead(sensorPin);
Serial.println(sensorValue);
if (sensorValue < 100)
{
Serial.println(“Fire Detected”);
Serial.println(“LED on”);
digitalWrite(led,HIGH);
digitalWrite(buzzer,HIGH);
delay(1000);
}
digitalWrite(led,LOW);
digitalWrite(buzzer,LOW);
delay(sensorValue);
}

Results are displayed on the serial window.

When there is Flame the LED and Buzzer automatically ON and when there is no flame amount Arduino automatically turns off LED and Buzzer.

Here based on our room condition the threshold value we took was 100 for the Flame sensor.

When we place a Flame Near Flame Sensor Arduino automatically turns on the LED and Buzzer. When we remove Flame from the flame sensor Arduino automatically Turns Off LED and buzzer.