Ashad Ahmed
Published © GPL3+

Forest Fire Monitoring & Detection System (with SMS Alerts)

In this project, a forest fire detection system is built with the help of Arduino UNO and GSM Shield for SMS alerts.

IntermediateFull instructions provided2 hours7,484
Forest Fire Monitoring & Detection System (with SMS Alerts)

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Schematics

Flow chart of working of the project

Code

Receiver and Transmitter Side Arduino Module Codes

Python
This code configures the receiving side Arduino Module for Temperature and Humidity Monitoring, If the values exceed a threshold an SMS is sent to the base station alerting them about the same. If there is a value rise at transmitter side node then this is communicated through RF-Transmitter module on transmitter side Arduino Uno to the RF-Receiver module on Receiving side Arduino Uno. NOTE that the code below consists of two parts one for "Receiver side arduino" and the other for "Transmitter side arduino"
########( PART-1  )######  Receiver Side Arduino CODE ##########################
// Include RadioHead Amplitude Shift Keying Library
#include <SoftwareSerial.h>
#include <RH_ASK.h>
// Include dependant SPI Library 
#include <SPI.h> 

#include <DHT.h>

SoftwareSerial mySerial(4, 3);
 
//Constants
#define DHTPIN 2     // what pin we're connected to
#define DHTTYPE DHT11   // DHT11

int smokeA0 = A5;
// Your threshold value
int sensorThres = 400; 
// Define Variables

DHT dht(DHTPIN, DHTTYPE); // Initialize DHT sensor for normal 16mhz Arduino

//Variables
float hum;  //Stores humidity value
float temp; //Stores temperature value
 
// Define output strings
 
String str_humid;
String str_temp;
String str_smk;
String str_out;
 
// Create Amplitude Shift Keying Object
RH_ASK rf_driver;


void setup()
{
    pinMode(smokeA0, INPUT);
    dht.begin();  
    // Initialize ASK Object
    rf_driver.init();
    // Setup Serial Monitor
    Serial.begin(9600);
    mySerial.begin(115200);
}
 
void loop()
{   
    delay(2000);
    hum = dht.readHumidity();
    temp= dht.readTemperature();
    Serial.print("Reciever Humidity = ");
    Serial.print(hum);
    Serial.print('\n');
    Serial.print("Reciever Temperature = ");
    Serial.println(temp);

    int analogSensor = analogRead(smokeA0);
    String smk;
    // Checks if it has reached the threshold value
    if (analogSensor > sensorThres)
    {
      Serial.print("Smoke at Reciever");
      Serial.print('\n');
      smk = "Smoke";
    }
    else
    {
      Serial.print("Clean at Reciever");
      Serial.print('\n');
      smk = "Clean";
    }
  
    // Set buffer to size of expected message
    uint8_t buf[20];
    uint8_t buflen = sizeof(buf);
    // Check if received packet is correct size
   if (rf_driver.recv(buf, &buflen))
   {
     str_out = String((char*)buf);
     for (int i = 0; i < str_out.length(); i++)
     {
      if (str_out.substring(i, i+1) == ",")
        {
        str_humid = str_out.substring(0, i);
        str_temp = str_out.substring(i+1, i+6);
        str_smk = str_out.substring(i+7,i+12 );
        break;
        }
      }
    }
      
      // Print values to Serial Monitor
      Serial.print("Humidity: ");
      Serial.print(str_humid);
      Serial.print("  - Temperature: ");
      Serial.println(str_temp);
      Serial.print("  - Air Quality: ");
      Serial.println(str_smk);


      if( hum >= 60 && temp >= 25 )
      {
      Serial.print("Fire Detected at Reciever ");
      mySerial.println("AT+CMGF=1");    //Sets the GSM Module in Text Mode
      delay(1000);  // Delay of 1000 milli seconds or 1 second
      mySerial.println("AT+CMGS=\"+918744984131\"\r"); // Replace x with mobile number
      delay(1000);
      mySerial.println("    FIRE ALERT  !! ");
      Serial.println('\n');
      mySerial.println("Fire at Reciever Node ");
      Serial.println('\n');
      mySerial.println("Temperature : " + String(temp));
      Serial.print('\n');
      mySerial.println("Humidity : " + String(hum));
      Serial.print('\n');
      mySerial.println("Air Quality : " + smk);
      delay(100);
      mySerial.println((char)26);// ASCII code of CTRL+Z
      delay(1000); 
      }
      if( str_humid.toInt() >= 60 && str_temp.toInt() >= 25 )
      {
      Serial.print("Fire Detected at Transmitter ");
      mySerial.println("AT+CMGF=1");    //Sets the GSM Module in Text Mode
      delay(1000);
      mySerial.println("AT+CMGS=\"+918744984131\"\r"); // Replace x with mobile number
      delay(1000);
      mySerial.println("    FIRE ALERT !! ");
      Serial.println('\n');
      mySerial.println("Fire at Transmitter Node ");
      Serial.println('\n');
      mySerial.println("Temperature : " + str_temp);
      Serial.print('\n');
      mySerial.println("Humidity : " + str_humid);
      Serial.print('\n');
      mySerial.println("Air Quality : " + String(str_smk));
      delay(100);
      mySerial.println((char)26);// ASCII code of CTRL+Z
      delay(1000); 
      }
      
}

#######(  PART-2   )############  Transmitter Side Arduino Code ############
############################################################################

#include <RH_ASK.h> 
#include <SPI.h> 
#include <DHT.h>

//Constants
#define DHTPIN 2     // what pin we're connected to
#define DHTTYPE DHT11   // DHT11

DHT dht(DHTPIN, DHTTYPE); // Initialize DHT sensor for normal 16mhz Arduino

int smokeA0 = A5;
// Your threshold value
int sensorThres = 400; 
// Define Variables
 
float hum;    // Stores humidity value in percent
float temp;   // Stores temperature value in Celcius
float smk;
 
// Define output strings
 
String str_humid;
String str_temp;
String str_smk;
String str_out;


 
// Create Amplitude Shift Keying Object
RH_ASK rf_driver;
 
// Initialize DHT sensor for normal 16mhz Arduino
 
void setup() {
  dht.begin(); 
  pinMode(smokeA0, INPUT);
  // Initialize ASK Object
  rf_driver.init();
 
}
 
void loop()
{
 
    delay(2000);  // Delay so DHT-22 sensor can stabalize
   
    hum = dht.readHumidity();  // Get Humidity value
    temp= dht.readTemperature();  // Get Temperature value
    
    // Convert Humidity to string
    str_humid = String(hum);
    Serial.print(hum);
    // Convert Temperature to string
    str_temp = String(temp);
    Serial.print(temp);
    int analogSensor = analogRead(smokeA0);
    // Checks if it has reached the threshold value
    if (analogSensor > sensorThres)
    {
      str_smk = "1";
    }
    else
    {
      str_smk = "0";
    }
 
    // Combine Humidity and Temperature
    if(str_smk == "1")
    {
    str_out = str_humid + "," + str_temp + "," + "Smoke";
    }
    if(str_smk == "0")
    {
    str_out = str_humid + "," + str_temp+ "," + "Clean";  
    }
    // Compose output character
    const char *msg = str_out.c_str();
    
    rf_driver.send((uint8_t *)msg, strlen(msg));
    rf_driver.waitPacketSent();
  
}

Credits

Ashad Ahmed

Ashad Ahmed

4 projects • 7 followers
Electronics and communication engineering student at Amity University Noida, India. I love working on self guided electronic projects.

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