Created May 4, 2019

Temptor System

This is a temperature monitoring system which sends email alerts once the temperature crosses a particular level.

Intermediate1 hour28

Things used in this project

Hardware components

Temperature Sensor

Bolt IoT Bolt WiFi Module

USB-A to Micro-USB Cable

Female/Female Jumper Wires

Solderless Breadboard Half Size

Software apps and online services

Bolt IoT Bolt Cloud

Story

INTRODUCTION

Temperature monitoring systems are incredibly useful tools to monitor and manage your heat levels at all of your remote telecom sites. While "too much heat" is the most common problem when dealing with computer systems, "too cold" is also a very real problem in some climates, as you'll learn.

A temperature monitoring system will help you to avoid heat buildup at your telecom locations, like huts and other network nodes. Temperature monitoring is also important at less industrial "IT" locations like server rooms and data centers. The right temperature monitoring system will enable you to keep track of critical temperatures at all of your sites that contain important computer gear.

Steps to build Temperature Monitoring and Alert System:

1. Set the Bolt Wifi module and make the Hardware connections using the LM35, wires,Bolt Wifi module and breadboard.

2.Even if you don't have the breadboard the connections can still be made!!

3.Connect pin 1 of LM35 to 5V, pin 2 to GND and last pin to A0 (analog input pin)

4.For software work, make an account on Digital Ocean and create a droplet .

First, click on Create button and choose Droplet from the drop-down menu and the 'Create droplet' screen will appear. At the time of this writing, the 64-bit Ubuntu 18.10 image is selected by default and we will use the same version for this training.
In this step we will choose the size of the droplet i.e. the amount of RAM and storage space it should have.Choose India as the data centre region and once we have selected our options, click Create.

5. After creating a droplet you will receive the login details in your mail id.Install putty in your laptop and enter the login details that you got in your mail id.At the blank space of "Host name" enter your IP address which can be copied from Digital Ocean dashboard.

6. Setting the Bolt Cloud

Make sure that the red light you see in the screenshot is green after you connect your module to your PC using a USB cable.
After the connections are done make sure that both blue and green led of the bolt module is ON

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Generating API key for Bolt module is very important.Below screenshot shows you from where you can get the Bolt API key.

7. Mailgun Setup

This platform is used to send an email as an alert system.We will be using the mailgun API key to connect it to our server.Visit https://www.mailgun.com to create an account .While creating an account make sure to uncheck the payment option.

Make sure to enter your correct phone number so that you can complete the account verification process.

After verification is complete,click on Domains option and then on the "sandbox url".Below is what you will see on your computer screen.This data is very important and should not be shared with anyone.

Image for reference purpose only

8.Coding

Make the same circuit connections as described before.
Once you are done with that, log in to digital Ocean droplet and create a new folder to hold the files for this topic.
Create a configurations file for this project, using the following command.

sudo nano conf.py

After the editor is open, type in the following configuration parameters

Refer the steps mentioned here

9. Output Setup

I placed the circuit inside the refrigerator, since I was not having a power bank I used this way!!

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OUTPUT OBTAINED

Once I executed my code I was able to get the email alert of the temperature once it went below the minimum value set before!! Also if it goes above the set limit we receive an email alert for that too!!

After increase of temp values

VIDEO OF THE PROJECT

linkk for the video

https://drive.google.com/file/d/1RQWxc-05N5FLJG5ETDCZhR3a3__hhdI7/view?usp=sharing

Temperature Monitoring System

import conf, json, time,math,statistics
from boltiot  import Bolt,Email
minimum_limit=100
maximum_limit=400
def compute_bounds(history_data,frame_size,factor):
  if len(history_data)<frame_size:
    return None
  if len(history_data)>frame_size:
    del history_data[0:len(history_data)-frame_size]
  Mn=statistics.mean(history_data)
  Variance=0
  for data in history_data:
    Variance+=math.pow((data-Mn),2)
  Zn=factor*math.sqrt(Variance/frame_size)
  High_bound=history_data[frame_size-1]+Zn
  Low_bound=history_data[frame_size-1]-Zn
  return [High_bound,Low_bound]

mybolt=Bolt(conf.API_KEY,conf.DEVICE_ID)
mailer =Email(conf.MAILGUN_API_KEY, conf.SANDBOX_URL,conf.SENDER_EMAIL,conf.RECIPIENT_EMAIL)
history_data=[]

while True:
 print("reading sensor value")
 response= mybolt.analogRead('A0')

 data=json.loads(response)
 if data['success']!='1':
   print("error while recieving data")
   print("this is the error"+data['value'])
   time.sleep(10)
   continue
 sensor_value=int(data['value'])
 sensor_value1=sensor_value/10.24
 print("current refrigerator temperature is:"+str(sensor_value))
 # print("making request to mailgun to send email")
 # response = mailer.send_email("alert","current temp value is"+str(sensor_value))
 sensor_value=0
 try:
 sensor_value=int(data['value'])
    if sensor_value> maximum_limit or sensor_value<minimum_limit:
        print("making request to mailgun")
        response=mailer.send_email("alert","current temp value is:"+str(sensor_value))
        response_text=json.loads(response.text)
        print("response recieved from mailgun")
 except Exception as  e:
    print("There was an error while parsing the response:",e)
    continue
 bound=compute_bounds(history_data,conf.FRAME_SIZE,conf.MUL_FACTOR)
 if not bound:
   required_data_count=conf.FRAME_SIZE-len(history_data)
   print("more data needed")
   history_data.append(int(data['value']))
   time.sleep(10)
   continue
 try:
     if sensor_value>bound[0]:
       sensor_value1=sensor_value/10.24
       print("The temperature value has increased")
 response=mailer.send_email("Alert","Someone opened the fridge door")
       print("email response is:",response)
     history_data.append(sensor_value1);
 except Exception as e:
   print("error",e)
 time.sleep(10)

Credits

Komal Monga

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Temptor System

Things used in this project

Hardware components

Software apps and online services

Story

Code

Temperature Monitoring System

Credits

Komal Monga

Comments

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Temptor System

Temptor System

Things used in this project

Hardware components

Software apps and online services

Story

Code

Temperature Monitoring System

Credits

Komal Monga

Comments