Notes

WORKING PRINCIPLE :-

1 Detection of Motion
2 Detection and Identification of Face
3 Notifying the Owner
4 Notifying the Security Guard

Now we will discuss every process involved in Detail :-


1) Detection of Motion
In our proposed system, PIR sensors are placed in the rooms
in order to detect the motion of a person. When someone
comes in the range of the PIR sensor, the temperature of the
room increases due to the body temperature of that person.
This rise in temperature indicates the motion of an individual.
This triggers the pi camera on which immediately starts
recording video.

2) Detection and identification of face
It is done in 3 steps
i. Constructing an image dataset using the face of the
authorized members (family members).
ii. Training the face recognizing classifier with the
images in the dataset.
iii. Detecting faces in the captured images and
comparing them with the trainer dataset.


3) Notifying the owner
The Raspberry Pi is operated as a surveillance system where it
sends email alerts to the owner on account of an intrusion,
with the captured image as an attachment. The subject,
message content, Email ID and the image of the intruder are
all entered into the system through python scripts.
In order to send emails, Simple Mail Transfer protocol
(SMTP) is used by implementing a native library in Python.

4) Notifying the security guard
To enhance the level of security, the security guard of the
apartment is notified as well so that he can make is move in
due time. In order to notify the guard, a buzzer is used as an
alert to generate continuous beep when an intrusion occurs.
For him to acknowledge on which flat the intrusion has
occurred, an LCD display is mounted somewhere in the
security guard room which displays the suspicious flat number
of the apartment.