intelligent home security system -...

134 Mr.Vishnu C. Khade

International Journal of Engineering Technology Science and Research

IJETSR

www.ijetsr.com

ISSN 2394 – 3386

Volume 3, Issue 4

April 2016

Intelligent Home Security System

Mr.Vishnu C. Khade

Assistant Professor, Dept. of Electronics and Tele-communication Engineering

Arvind Gavali College of Engineering, Satara

Abstract—In this paper intelligent wireless Home

security system is presented. In order to prevent loss of

life and property due to any mishaps such as fire, gas

leaks and intruders, it is absolutely necessary in today’s

fast growing world to develop an adequate security

system that encapsulates all the required features. Home

automation for the elderly and disabled can provide

increased quality of life for persons who might otherwise

require caregivers or institutional care. A home

automation system integrates electrical devices in a

house with each other. Through the integration of

information technologies with the home environment,

systems and appliances are able to communicate in an

integrated manner which results in convenience, energy

efficiency, and safety benefits.

Keywords— security, safety, wireless

I. INTRODUCTION

In past few years, home automation, remote control

and monitoring systems have seen a rapid growth in

terms of technology. A review of these systems

based on existing technologies and also proposes a

GSM based controlling and remote monitoring

system [1]. This system has simple features

designed with the objective of minimum power

consumption using sensors for controlling lights,

fans and other appliances which are controlled via

SMS using a GSM module [5]. Using the public

GSM networks, a home automation system has been

proposed, designed, implemented and tested. The

design of a standalone microcontroller that can

monitor and control home appliances locally using

built-in input and output peripherals is presented.

Remotely, the system allows the home owner

monitoring and controlling the house appliances via

the mobile phone set by sending codes in the form

of SMS messages and receiving the appliances

status. The GSM modem provides the

communication media between the homeowner and

the system by means of SMS messages [6].

This system mainly focuses on the controlling of

home appliances remotely and providing security

when the user is away from the place. The system is

SMS based and uses wireless technology to

revolutionize the standards of living. This system

provides ideal solution to the problems faced by

home owners in daily life. The system is wireless

therefore more adaptable and cost-effective [6]. The

HACS system provides security against intrusion as

well as automates various home appliances using

SMS [6].

The paper is organized as follows. Section II details

the proposed system architecture. Section III

discusses hardware design of proposed system.

Section IV describes results and in Section V

discusses on the conclusion.

II. SYSTEM ARCHITECTURE

If homeowner forgot to turn OFF lights (any

electrical equipment), gas or water valve then either

he has to come back and turn OFF the appliances or

he has to tell neighbours to turn OFF the appliances.

It’s very time consuming. And for some reasons

both conditions are not possible then it causes

power consumption. Sometimes power is cut-OFF

from MSEB or load shedding is going on and

homeowner forgot to turn OFF the switches. When

power supply is turn ON from MSEB, in the

absence of homeowner, wasting of power supply

takes place. We have to stop power consumptions

like this.

As shown in Fig 1, with the help of GSM based

system we can overcome the above disadvantages.

We can monitor and control the home appliances. If

anyone appliance remained ON, this system will

inform us about that appliance. It will also give us

status of all the appliances. If homeowner want to

turn ON any appliance anytime, it’s possible with

the help of this system [6]. Home automation is

adopted for reasons of ease, security and energy

efficiency. Home automation may include

centralized control of lighting, HVAC (heating,

ventilation and air conditioning), appliances, and

other systems, to provide improved convenience,

comfort.



IJETSR

www.ijetsr.com

ISSN 2394 – 3386

Volume 3, Issue 4

April 2016

Fig.1 System architecture

III. THE HARDWARE DESIGN

A.SENSORS

1. LPG SENSOR

High sensitivity to LPG, iso-butane, propane Small

sensitivity to alcohol, smoke, fast response Stable

and long life Simple drive circuit are the important

Features of LPG Sensor. We recommend that

calibration of the detector in terms of fo 1000ppm

of LPG concentration in air. When accurately

measuring, the proper alarm point. For the gas

detector should be determined after considering the

temperature and humidity influence. They are used

in gas leakage detecting equipments in family and

industry, are suitable for detecting of LPG, iso-

butane, propane. This sensor has a high sensitivity

and fast response.

Structure of MQ-6 gas sensor is shown as Fig 2,

sensor composed by micro AL2O3 ceramic tube,

Tin Dioxide (SnO2) sensitive layer, measuring

electrode and heater are fixed into a crust made by

plastic and stainless steel net. The heater provides

necessary work conditions for work of sensitive

component. The enveloped MQ- 6 have 6 pin,4 of

them are used to fetch signals, and other 2 are used

for providing heating current.

Fig. 2 Structure of MQ-6 gas sensor

Sensitivity Characteristics:

Fig.3 shows the typical sensitivity characteristics of

the MQ-6, ordinate means resistance ratio of the

sensor characteristics. Ordinate means resistance

ratio (Rs/Ro), abscissa is concentration of gases. Rs

means of the sensor (Rs/Ro), Rs means resistance in

different gases; Ro means resistance of sensor in

1000ppm LPG. All tests are under standard test

conditions.

Fig.3 Sensitivity characteristics of the MQ-6

2. LIGHT SENSOR

LDRs or Light Dependent Resistors as shown in

Fig.4 are very useful especially in Light /dark

sensor circuits.

Fig.4 Light Dependent Resistors



IJETSR

www.ijetsr.com

ISSN 2394 – 3386

Volume 3, Issue 4

April 2016

Normally the resistance of an LDR is very high,

sometimes as high as 1000 000 ohms, but when

they are illuminated with light resistance drops

dramatically. Fig.5 shows the typical electrical

characteristics of the LDR.

Fig.5 typical electrical characteristics of the LDR

3. DOOR SWITCH

Safety Door Switches detect when mechanical

guards or covers are closed. They are available in

models using either mechanical or non-contact

detection, and operation with special keys or

actuators is possible [3]. Door switches are as

shown in Fig 6.

Fig.6 Door Switch

IV RESULTS

Firstly if we want status of our used devices, send a

message “CHECK” to GSM modem. Then GSM

Sends back the status of all the devices to our

mobile as shown in Fig 7.

When LDR’s resistance decreases in dark, then bulb

glows ON, if we want to turn OFF the bulb then

send a message “BOFF” to mobile through GSM

modem. If we want to switch ON the bulb then send

a message “BON” to the GSM modem as shown in

Fig.8.When a gas leakage happens then resistance

of gas sensor increases up to 255, and then GSM

modem sends message on our mobile that “Gas

leakage” as shown in Fig.9.

Fig.7 All Devices Status

Check fan’s status directly on power supply pin to

microcontroller. If the voltage 0, it indicates that fan

is off. If we want to turn ON the fan, send

message“FON” to GSM modem through mobile &

for turn OFF the fan send message “FOFF” to GSM

modem as shown in Fig.10. Door switch gives the

status of door. It will tell us that the door is close or

open.

Fig. 8 LDR Status



IJETSR

www.ijetsr.com

ISSN 2394 – 3386

Volume 3, Issue 4

April 2016

Fig.9 Gas Sensor Status

Fig.10 FAN Status

IV. CONCLUSION

GSM based security system helps in safe guarding

life and property. It is compact in size, hence

beneficial for places with shortage of space. The

cost of the system is cheap. This system is accurate

and gives precise results. The system can be

reprogrammed as it makes the use of

reprogrammable microcontroller.

ACKNOWLEDGMENT

The author would like to thank the Arvind Gavali

College of Engineering,Satara for the timely and

important help in the field of Embedded. The

authors also wish to thank the reviewers for their

very detailed review of the manuscript and for their

help in clarifying some aspects of the reported

results.

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Botterweck “Mobile Home Automation Merging

Mobile Value Added Services and Home

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[2] Khusvinder Gill, Shuang-Hua Yang, Fang Yao, and

Xin Lu,” A ZigBee-Based Home Automation

System”,IEEE Transactions on Consumer

Electronics 2009.

[3] Yong Tae Park Pranesh Sthapit Jae-Young Pyun

“Smart Digital Door Lock for the Home

Automation”, IEEE International Conference, 2009

[4] Kosuke Ishiguro and Runhe Huang,”

Implementation of a Wireless Communication

Technologies based Home Security System” IEEE

International Conference, 2011

[5] Carelin Felix I. and Jacob Raglend “Home

Automation Using GSM” International Conference

on Signal Processing, Communication, Computing

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[6] H. ElKamchouchi and Ahmed ElShafee,” Design and

Prototype Implementation of SMS Based Home

Automation System” IEEE International Conference

on Electronics Design,Systems and Applications,

2012

[7] Alper Gurek, Caner Gur, Cagri Gurakin, Mustafa

Akdeniz, Senem Kumova Metin,” An Android

Based Home Automation System” IEEE

International Conference 2013.

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