INTRODUCTION
HOW IT WORKS
DEMONSTRATION VIDEO
1. Hardware Setup
2. Set Bolt Device On and get API key and Device ID
3. Create Twilio Account
4 Download UBUNTU- VMware
5. Write Python Code

Published July 6, 2020

Fire_Alert_System

The device which alert us when fire is detected and sends a alert message.

BeginnerFull instructions provided1.5 hours382

Things used in this project

Hardware components

Bolt IoT Bolt WiFi Module

Temperature Sensor

Buzzer

5 mm LED: Red

5 mm LED: Green

Male/Female Jumper Wires

Male/Male Jumper Wires

Breadboard (generic)

Resistor 10k ohm

USB-A to Mini-USB Cable

Software apps and online services

Bolt IoT Android App

Bolt IoT Bolt Cloud

Twilio SMS Messaging API

Ubuntu VMware

Story

INTRODUCTION

Fire Alarm System is designed to alert us to an emergency so that we can take action to protect general public. Fire alarms are found in offices, factories, and public buildings, they are a part of our everyday routine but are often overlooked until there is an emergency at which point, they might just save our lives. Alerts can be send to office staff, building people, factory workers and also direct to fire department. After detecting fire, we can immediately call fire brigade or now a fire extinguisher is almost present everywhere. Till fire brigade come and take control public can use extinguisher to reduce property loss to some extend.

But, there are some old buildings like mine which does not have any such facilities. So here is the FIRE ALERT SYSTEM for my house to be safe which sends SMS on mobile when fire detected.

HOW IT WORKS?

Now you will think, how this device works? Here is the answer.

When you power on this device Green LED gets ON which gives us a signal that everything is fine and no need to worry. A certain threshold for temperature is set to know whether fire is there or not. If temperature sensor detects very high temperature and beyond threshold Green LED gets OFF and Red LED and buzzer gets ON and it sends alert text message on your mobile phone. This continues till situation gets clear. As situation gets clear again, red LED and buzzer gets OFF and green LED gets ON. The device reads value after every 10 secs.

DEMONSTRATION VIDEO

1. Hardware Setup:

Connect LM35 on breadboard. It has 3 legs, hold it in the position such that its flat side faces you and identify the pins of the sensor as VCC, Output and Ground from your left to right.
Connect VCC to 5V on bolt module, Output to A0 analog pin on bolt module and Ground pin to Gnd pin on bolt module using male-male jumper wires.
Connect red and green LED on breadboard and connect a resistor to longer leg of both LED. Connect longer leg of red LED to GPIO pin 1 on bolt module and longer leg of green LED to GPIO pin 0 on bolt module using male-male jumper wires. Connect short leg of both LEDS to ground using wires.
Connect longer leg of buzzer to GPIO pin 2 on bolt module and short leg to ground.

2. Set Bolt Device On and get API key and Device ID

2.1Set Your Bolt Device On

To power on Bolt device on use USB cable by connecting it directly to PC or adaptor. Set up your bolt by creating bolt account. Follow the steps given in the link to set bolt device https://cloud.boltiot.com/docs. Check if both blue and green lights are on bolt device.

2.2 Get your API KEY and DEVICE ID

Login to your bolt could account http://cloud.boltiot.com/.
Copy your Device ID.

Go to API section and copy your API KEY.

3. Create Twilio Account

Twilio is the third party SMS functionality provider. It allows developers to send and receive text messages and calls.

Open Twilio https://www.twilio.com/.
Click on 'Sign Up' to create account. Enter firstname, lastname, your E-mail Id and your password and accept its terms and condition. Click on 'Start your free trial'.
Verify your Email Id and Mobile No. to proceed. Go to your dashboard.
To get trial No. click on 'Get a Trial Number'.

Click on 'Choose this Number' to get your trial number.

You will get your trial no and click on 'Done'. Copy your Account SID and AUTH TOKEN and Trial Number which is underlined. Click on show button to view your Auth Token no.

4 Download UBUNTU- VMware

Here for this project I have used VMware software for writing python code. You can use any other software for it.
Download software from link https://my.vmware.com/web/vmware/free#desktop_end_user_computing/vmware_workstation_player/12_0
Also download Ubuntu Server ISO. http://releases.ubuntu.com/16.04/ubuntu- 16.04.6-server-i386.iso
After downloading the software, instakk VMware with default setting and accepting their terms and condition.
Open VMware, click on 'Create a new Virtual Machine'.

In Installer disc image file, select the location of ubuntu server iso which we have downloaded with VMware software by clicking on browse and click on next.

Enter your fullname, username, and password. Remember this username and password as you will need it to login in to your server. CLick on next. When asked for disc size, select 10GB and select 'store virtual disc as single file'.
Finsh the process and it will take some time for installation.
After installation completes, open ubuntu server, login in your machine and install all the python libraries.

To update packages- Execute below command on server.

sudo apt-get -y update

To install python3 pip3- Execute below command.

sudo apt install python3-pip

To install boltiot library - Execute below command.

sudo pip3 install boltiot

5. Write Python Code

Open your VMware workstation, login in to your server.
Create a new file to store all Twilio credentials and bolt API key and device id by executing below command and save the file by pressing Ctrl+X

sudo nano conf.py

Now create a new file to write our python code to send alert.

sudo nano fire_alert_system.py

Code

import conf                                 #import credential file
from boltiot import Sms, Bolt
import json
import time

mybolt = Bolt(conf.API_KEY, conf.DEVICE_ID) #to connect to bolt device.

sms = Sms(conf.SID, conf.AUTH_TOKEN, conf.TO_NUMBER, conf.FROM_NUMBER)  # to send SMS using this info

green_led=mybolt.digitalWrite('0','HIGH')  #To ON green LED, as no fire.

#loop to fetch and detect whether fire or not after every 10 secs 

while True: 
  print ("Reading sensor value")
  response = mybolt.analogRead('A0')   #Get sensor value from bolt device
  data = json.loads(response)
  #loop to compare the temperature if matching with fire's
  try: 
    sensor_value=int(data['value'])
    temperature=(100*sensor_value)/1024             #converting raw temperature      reading to degree Celsius.
    print("Sensor value is: " + str(temperature))
    if temperature>conf.THRESHOLD_VALUE: 
      green_led=mybolt.digitalWrite('0','LOW')   #OFF green LED
      buzzer=mybolt.digitalWrite('2','HIGH')     #ON buzzer
      red_led=mybolt.digitalWrite('1','HIGH')    #ON red LED
      print("FIRE! Making request to send SMS")
      response=sms.send_sms("FIRE!FIRE! GET OUT OF YOUR HOUSE.")       #sending sms
      print("status of sms  is:"str(response.status))
    
    else:
      green_led=mybolt.digitalWrite('0','HIGH')      #ON green LED
      red_led=mybolt.digitalWrite('1','LOW')         #OFF red LED
      buzzer=mybolt.digitalWrite('2','LOW')          #OFF buzzer
  except Expection as e:
    print("error accured:below are the details")
    print(e)
    time.sleep(10)     # time delay of 10 secs

SID = 'ACecXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'#You can find SID in your Twilio Dashboard 
AUTH_TOKEN ='a528XXXXXXXXXXXXXXXXXXXXXXXXXXXX' #You can find  on your Twilio Dashboard        
FROM_NUMBER ='+120XXXXXXX' #This is the no. generated by Twilio. You can find this on your Twilio Dashboard
TO_NUMBER ='+91810XXXXXXX' #This is your number. Make sure you are adding +91 in beginning
API_KEY ='bf0eaXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX' #This is your Bolt Cloud accout API key       
DEVICE_ID ='BOLTXXXXXXX' #This is the ID of your Bolt device 
THRESHOLD_VALUE=40

Credits

Chetashri Mahajan

1 project • 0 followers