P Bhaskar Rao et al, International Journal of Computer Science and Mobile Computing, Vol.4 Issue.5, May- 2015, pg. 797-803
© 2015, IJCSMC All Rights Reserved 799
Suppose an employee who has gone to work and during this period a thief sneaks up into the house
breaking through a window. The proposed system would enable the client to monitor his home when a door or a
window sensor triggers the alarm. Client monitors his home with webcam and could immediately inform local
authority or a policeman.
The Client could also check the status of the outside light and turn on and off the light without the need to
get out of bed. These devices would also benefit users with limited mobility that may have a difficult time getting to
or even reaching their light switch. These objectives require a large amount of technology. The user interface must
be as simple and powerful as possible and operate in a selforganized way.
IV EXISTING SYSTEM
SAP laboratories in Canada with researches from the University of McGill present a wireless solution for
monitoring people in need of medical assistance. The application relies on the use of cell phones and inexpensive
sensors and is best suited for the elderly and homebound people. The main functions of the project is to collect
signals through a wireless sensor network using API’s and the analysis for data through an adaptive architecture that
produces realtime heath monitoring system to improve medical support for people in their homes and in assisted
living environments.
Several groups have done extensive research into the use of smart home devices for the support or elderly
and handicap people. The University of ErlangenNuremberg, Germany has described the challenges regarding smart
homes, especially for supporting the elderly and handicapped. The purpose is to compensate for handicaps and
support the individual in order to give them a more independent life for as long as possible.
The paper does however reinforce the advantages of using a wireless standard. Bluetooth is a global
standard for connecting a wide range of devices, it is available on most handheld devices, the technology is very
easy to use and set up, and it provides security by encrypting data using a 128bit long shared key but the
disadvantage of system is that it has a very short range of communication.
Radio Frequency (RF) systems have become increasingly popular recently with the advancements in RF
technology such as Bluetooth and ZigBee. These products offer a much more reliable short range network then
previous Infrared devices which had interference and security issues. But RFID tags are more expensive, less
reliable and are application specific i.e. no one tag fits all.
This project will focus on Smartphones enabled systems for the smart home with focus on the Raspberry Pi
applications. Although many systems have been researched and proposed, very few if any have been implemented.
This project aims to build on the previous research described to implement a wireless sensor network to monitor
appliances in the house. These appliances will be controlled via a smartphone running Android OS. This approach
provides an easy to operate and cost effective approach that will benefit users to interact with Home appliances
remotely.
V PI ENABLED SMART HOME DEVICES
Raspberry Pi: A microprocessor will interface with the android module to perform the automation. A simple
microprocessor will receive signals from the smartphone and it will be processed.
Develop Software Interface Mobile Device: An android application to be developed using the ADT (Android
Developer Tools) java platform for programs running on mobile devices that communicates between pi and home
devices easily.
Integrate the Sensors to a Device: The Raspberry Pi needs to be integrated with the lighting, door sensors and
webcam control systems at a low cost with easy installation.
After extensive research into the products and solutions currently available, the following were chosen to
meet our application specific requirements.
5.1 RASPBERRY PI DEVELOPMENT BOARD
The Raspberry Pi is a credit card sized single board computer developed in the UK by the Raspberry Pi
Foundation with the intention of promoting the teaching of basic computer science in schools. The Raspberry Pi is
manufactured in two board configurations.