ABSTRACT
This
project presents a design and implementation of new advanced Security power
control using Android power switch system that uses WiFi technology as a
network infrastructure connecting its parts. The proposed system consists of
two main components; the first part is the server (web server), which presents
system core that manages, controls, and monitors users’ home. Users and system
administrator can locally (LAN) or remotely (internet) manages and control
system code. Second part is hardware interface module, which provides
appropriate interface to actuator of home automation system. Unlike most of
available home automation system in the market the proposed system is scalable
that one server can manage many hardware interface modules as long as it exists on
WiFi network coverage. System supports a wide range of home automation devices
like power management components, and security components. The proposed system is
better from the scalability and flexibility point of view than the commercially
available home automation systems.
INTRODUCTION
The
project aims at designing an advanced Security power control using Android
power switch system using normal web server and Wi-Fi technology. The devices
can be switched ON/OFF and sensors can be read using an android smartphone through
Wi-Fi. Automation
is the most frequently spelled term in the field of electronics. The hunger for
automation brought many revolutions in the existing technologies. These had
greater importance than any other technologies due to its user-friendly nature.
These can be used as a replacement of the existing switches in home which
produces sparks and also results in fire accidents in few situations.
Considering the advantages of Wi-Fi an advanced automation system was developed
to control the appliances in the house. Wi-Fi (Short for Wireless Fidelity) is a
wireless technology that uses radio frequency to transmit data through the air.
Wi-Fi has initial speeds of 1mbps to 2mbps. Wi-Fi transmits data in the
frequency band of 2.4 GHz. It implements the concept of frequency division
multiplexing technology. Range of Wi-Fi technology is 40-300 feet. The controlling device
for the automation in the project is a Arduino UNO. The data sent from Android
over Wi-Fi will be received by Wi-Fi module connected to Arduino UNO. Arduino
UNO reads the data and decides the switching action of electrical devices
connected to it through Relays.
OBJECTIVE
OF PROJECT
The
goal of this project is to develop an advanced Security power control using
Android power switching system that gives the user complete control over all
remotely controllable aspects of his or her home. The automation system will
have the ability to be controlled from a central host android Smartphone, the esp8266
module, and also remotely accessed via a Pocket PC with a Windows Mobile based
application.
SCOPE
OF PROJECT
Day
by day, the field of automation is blooming and these systems are having great
impact on human beings. The project which is to be implemented is designing an
advanced Security power control using Android power switch and WIFI and has
very good future development. In the current system web server is installed on a windows PC so
the home appliances can be controlled using only by using the device on which
web server is installed. This can be further developed installing web server on
cloud. Advantage of installing web server on the cloud is that home can be
controlled by using any device which has WIFI 802.1 and a web browser. By
visiting the IP address of the cloud the control actions can be taken.
PROJECT LIMITATIONS
Because
the project is a prototype module it has some limitations that can be modified
in future modification of the project.
- The systems can only cover the range of 40 – 300ft.
- The system will not work until the wifi is ON.
- It is a bit costly because of the modules that are involved.
There are lots terminologies which
are require to be known to get the better understanding of what wireless
network technology is and how it works. Following are the terms which are
involved in Wi-Fi and wireless networks.
Gigahertz
Gigahertz is frequency measurement
and its unit is GHz. It represents frequencies in the billions of cycles per
second range. Giga represents 1 billion and hearts is standard unit used for
measuring different frequencies. GHz is used with wireless communication as
radio frequencies and computer performance. GHz refer to clock speed of central
procession unit, (CPU). The higher the GHz, or CPU clock is the better the
performance of the computer. The lowest clock GHz in Pentium 1 series is 133
which had reached up to 4 GHz along the time. Whereas in radio communication
GHz is refer as bands of electric spectrum. Different band different uses for
example, 802.11b/g falls somewhere between 2.4GHz to 5.0GHz.Latest technologies
like Bluetooth, cordless phones, Wi-Fi operates on S-bands Satellite
communication and global possible system (GPS) operates on L-bands. There are
other popular bands like Ku, Ka which have different uses.
WiBro
Wibro have nothing to do with Wi-Fi
directly, but it can be called extended version of Wi-Fi, Its is known as
Wireless broadband. It is developed in South Korea and it is latest technology
in mobile access of wireless broadband. Wi-Fi operates on 802.11 standards developed
by IEEE, WiBro on the other hand operates on 802.16 just as WiMax do. WiBro is
specially design for connectivity while on move, where as WiMax is not
recommended on move connectivity.
Hotspot
Hotspot is the place where wireless
network is available for public use. Devices like laptops, handsets, Pdas, Note
books etc are mostly installed with Wireless network cards which are designed
to connect to Wi-Fi network in surrounding area. The place where wireless
network is available to access is called hotspot. HotSpots are mostly available
for free at Coffee shops, Public libraries, Public grounds, Universities, Airports,
and Railway Stations etc.
WiFi Finder
As name suggests, it portable device
to find Wireless network available for public use in certain area. This devices
helps to find hotspots so laptop battery do not get waste just for finding
Wireless network around. Wi-Fi finder is mostly battery operated device which
is about a mouse size. When WiFi find is turn on it stats searching wireless
network around if wifi network found it turns on its LED which says network is
around and ask if wants to connect to it. If no network is found LED remain
turned off. WiFi finders operate on 802.11b/g bands. Different versions of WiFi
finders are available in market depending upon the additional features,
Expensive modules comes with built in antenna which enhance the range and connection
capabilities. WiFi finder Modules can ranges from 150 feet to 300 feet
depending how sophisticated and expensive the module is. Wi-Fi finders once
scan the network can be connected to laptops through USB.
Access Point
This is another important term which Wi-Fi
users mostly heard. Access point is almost like Hotspot. Its is also known as
WAP, Wireless access point. WAP device connects wireless communication devices
together to form a wireless network. WAP network are mostly connected to wired
network and can provide interface between wireless devices with wired devices.
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