Security System Using Raspberry Pi

We have seen how to build home security system with email notification in the tutorial with out using Camera. In my previous posts we have also seen other IoT Projects with raspberry Pi and how to use Cayenne to create triggers. Here we will be extending home security email alert system using raspberry pi to the next level. We will add Raspberry Pi Camera in to our setup to capture the image and send to the email when the intruder is detected. The project will be using Python script to capture the image from the camera and send in email when detecting any trespassers movement

The Internet of Things (IoT) is the network of things (physical devices, vehicles, home appliances, and other items embedded with electronics, software, sensors, actuators) connected through internet which enables these things to exchange data. This creates opportunities for more direct integration of the physical world into computer-based systems, resulting in efficiency improvements, economic benefits, and reduced human exertions.

In simple terms we can say IoT is a system of things integrated with sensors, softwares, electronics which are connected to each other & can exchange data or Information with other connected devices.

The Sensors & devices can be like temperature sensor, motion sensor, camera, GPS etc. and to connect these devices each others there should be a medium like Internet ( WiFi), Bluetooth, satellite, Cellular etc. And last the data send between the devices need to be stored & analyzed like in cloud, data analytics software etc.

Connection:

First you need to Set up the Raspberry Pi 3 for the project. For setting up the raspberry pi with operating system follow my tutorial. Download the image and install it on the SD card, Connect to WIFI or ethernet cable.a

Program 1 : This is the extended version which I used for normal email alert when motion detected.

import RPi.GPIO as GPIO

import picamera

from picamera import PiCamera

import time

import smtplib

from email.MIMEMultipart import MIMEMultipart

from email.MIMEText import MIMEText

from email.MIMEBase import MIMEBase

from email import encoders

from email.mime.image import MIMEImage

fromaddr = "your email address" # change the email address accordingly

toaddr = "To email address" # change the email address accordingly

mail = MIMEMultipart()

mail['From'] = fromaddr

mail['To'] = toaddr

mail['Subject'] = "Intruder Alert!, Motion detected!"

body = "Find the attached for the intruder picture"

PIRSensor = 4

GPIO.setmode(GPIO.BCM)

GPIO.setup(PIRSensor, GPIO.IN, GPIO.PUD_DOWN)

camera = PiCamera()

def capture_image():

data= time.strftime("%d_%b_%Y|%H:%M:%S")

camera.start_preview()

time.sleep(5)

print data

camera.capture('/home/pi/Pictures/img%s.png'%data)

img= '/home/pi/Pictures/img%s.png'%data

camera.stop_preview()

time.sleep(1)

Current_State = 0

Previous_State = 0

try:

print "Waiting for PIR to settle..."

• Loop until PIR output is 0

while GPIO.input(PIRSensor)==1:

Current_State = 0

print " Ready"

• Loop until users quits with CTRL-C

while True :

• Read PIR state

Current_State = GPIO.input(PIRSensor)

if Current_State==1 and Previous_State==0:

• PIR is triggered

print " Intruder Alert!, Motion detected!"

#Capture Image

capture_image()

#Send mail

mail.attach(MIMEText(body, 'plain'))

attachment = open(img, 'rb')

image=MIMEImage(attachment.read())

attachment.close()

mail.attach(image)

server = smtplib.SMTP('smtp.gmail.com', 587)

server.starttls()

server.login(fromaddr, "your password")

text = mail.as_string()

server.sendmail(fromaddr, toaddr, text)

server.quit()

• Record previous state

Previous_State=1

elif Current_State==0 and Previous_State==1:

• PIR has returned to ready state

print " Ready"

Previous_State=0

• Wait for 10 milliseconds

time.sleep(0.05)

except KeyboardInterrupt:

print " Quit"

• Reset GPIO settings

GPIO.cleanup()

Reference: Smart Home Security System

Automated Home Motor Control System

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