Fire Alarm Working Sample Based On IoT

Introduction

 

This article demonstrates how to make a fire alarm working sample based on IoT using Pushetta Service, working with MQ2 Gas Sensor. The MQ-2 Gas Sensor module detects a gas leak in the home and industry. They are sensitive to a range of gases and are used indoors at room temperature. The output is an analog signal and can be read with an analog input of the Raspberry Pi. 

 

Pushetta 

 

Pushetta is made to make it simple to broadcast communications to groups of subscribers. It works in a really simple way: As a publisher, you create a thematic group and every user that subscribes to this group receives a notification every time you push a message. It can be compared to SMS with many advantages.

 

Installation

 

You can learn Raspberry Pi installation from my previous article.

 

Pin Diagram 

 

 

 

Step 1

 

First, go to the Pushetta website "http://www.pushetta.com/my/dashboard " and then log into this site to get the API.

 

 

 

After that, create a new channel for subscribers. This channel is used to identify my API. I have already created and subscribed to my channel "RaviIoT".

 

 

 

Step 2

 

Next, go to install the mobile app "https://play.google.com/store/apps/details?id=com.gumino.pushetta". Go to the search bar to search for the channel name and click the subscribe button.

 

 

 

Step 3

 

Open the python IDE 3.0, File >> New save the name as gas.py, then follow the given code.

 

Syntax 

 

 {

sendNotification ("Your API","Channel Name","Alert Message")

 }

sendNotification("7230ffbdd10f0db0a740a6b3865f9082105e58d7", "RaviIoT", "Ravi your home leaked out the LPG Gas be alert !!!!!")

Full Package Code

import RPi.GPIO as GPIO
import time
import urllib2
import json

GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)

GPIO.setup(26, GPIO.IN)
#GPIO.setup(3, GPIO.OUT)

def sendNotification(token, channel, message):
 data = {
  "body" : message,
  "message_type" : "text/plain"
 }

 req = urllib2.Request('http://api.pushetta.com/api/pushes/{0}/'.format(channel))

 req.add_header('Content-Type', 'application/json')
 req.add_header('Authorization', 'Token {0}'.format(token))

 response = urllib2.urlopen(req, json.dumps(data))

while True:

            i=GPIO.input(26)
            if i==0:                 #When output from LPG sensor is LOW
                print("No Gas Leakage Detected",i)
                #GPIO.output(3, 0)  #Turn OFF LED
                time.sleep(0.5)
            elif i==1:               #When output from LPG sensor is HIGH
                #print("Intruder detected",i)
                print("LPG Detect",i)
                sendNotification("7230ffbdd10f0db0a740a6b3865f9082105e58d7", "RaviIoT", "Ravi your home leaked out the LPG Gas be alert!)
                #GPIO.ocdutput(3, 1)  #Turn ON LED
                time.sleep(0.5)

Raspberry Pi and Mq2 Sensor Connection

 

 

 

Step 4

 

Next, we need to update the Raspberry Pi. So, install the latest packages. You can do that using the following commands.

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install python3

Run the program,

sudo python Program/gas/gas.py

 

When the sensor is detected immediately send the alert notification to channel subscribers.

 

 

Output 

 

Get alert notifications. The alert message is Ravi your home leaked out the LPG Gas be alert !!! 

 

 

Summary

 

Finally, we have successfully sent a notification for an mq2 gas sensor detection using Pushetta.