Dhruvajit Ghosh
Published

Temperature Sensor and Anomaly Detector

Well sometimes the fridge remains open due to negligence, which could spoil food. Through IoT technology we are going to solve our problem.

IntermediateFull instructions provided3 hours509
Temperature Sensor and Anomaly Detector

Things used in this project

Hardware components

Jumper wires (generic)
Jumper wires (generic)
×3
Bolt WiFi Module
Bolt IoT Bolt WiFi Module
×1
Temperature Sensor
Temperature Sensor
×1
USB-A to Mini-USB Cable
USB-A to Mini-USB Cable
×1
Breadboard (generic)
Breadboard (generic)
×1

Software apps and online services

Bolt Cloud
Bolt IoT Bolt Cloud
Bolt IoT Android App
Bolt IoT Android App
SMS Messaging API
Twilio SMS Messaging API

Story

Read more

Schematics

The Connection

Temperature Sensor and Bolt

Code

Anomaly Detection

Python
This has the whole cod needed to create the project
import conf, json,time, requests, statistics, math
from boltiot import Sms, Bolt

def data_get(hdata1, frame, factor):

    if len(hdata)<frame :
       return None
    if len(hdata)>frame :
       del hdata[0:len(hdata)-frame]

    Mean = statistics.mean(hdata)

    Variance= 0

    for data in hdata :
       Varianace= Variance + math.pow((data-Mean),2)

    zn = factor * math.sqrt(Variance/frame)

    hbound = hdata[frame-1]+zn
    lbound = hdata[frame-1]-zn
    return[hbound,lbound]

minlimit = 5
maxlimit = 11


mybolt = Bolt(conf.api, conf.id)
sms = Sms(conf.ssid, conf.token, conf.ton, conf.fromn)
hdata=[]

while True:
    response = mybolt.analogRead('A0')
    data = json.loads(response)
    print ("THE DATA INCOMING", data)
    if data['success'] != 1:
         print("There was an error while retriving the data.")
         print("This is the error:" +data['value'])
         time.sleep(10)
         continue

    print ("The value is "+data['value'])
    sensor=0
    try:
         sensor = int(data['value'])
    except Exception as e:
         print("Error. Try again",  e)
         continue

    bound = data_get(hdata, conf.frame, conf.factor)
    if not bound :
         reqbound= conf.frame -len(hdata)
         print ("No. of more points needed is" , reqbound )
         hdata.append(int (data['value']))
         time.sleep(10)
         continue

 try :

         temp = sensor/10.24
         if temp > maxlimit:

            print ("The Temperature value increased suddenly.Somebody opened the fridge. Sending sms.")
            print ("The Current temperature is: "+str(temp)+" °C")
            response = sms.send_sms("Alert ! Someone has opened the fridge door. The temperature is :"+ str(temp)+ "°C")
            print("This is the response ",response)

         elif temp > minlimit or temp < maxlimit:
            print("The fridge is cooling and tablet is safe")

            print (" The Current temperature is:" +str(temp)+ "°C")
            response = sms.send_sms("The fridge is cooling and tablet is safe")
            print("This is the response",response)
         hdata.append(sensor)

  except Exception as e:
           print ("Error",e)
    time.sleep(10)

Regression Graph

Python
Bolt Cloud
setChartLibrary('google-chart');
setChartTitle('Polynomial Regression');
setChartType('predictionGraph');
setAxisName('time_stamp','temp');
mul(0.0977);
plotChart('time_stamp','temp');

Configuration file

Python
Basic stuff
SID = 'You can find SID in your Twilio Dashboard' 
AUTH_TOKEN = 'You can find  on your Twilio Dashboard' 
FROM_NUMBER = 'This is the no. generated by Twilio. You can find this on your Twilio Dashboard'
TO_NUMBER = 'This is your number. Make sure you are adding +91 in beginning
API_KEY = 'This is your Bolt Cloud accout API key'
DEVICE_ID = 'This is the ID of your Bolt device' 

Credits

Dhruvajit Ghosh

Dhruvajit Ghosh

9 projects • 1 follower

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