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A Novel Cost Effective Mobile Controlled Home Security System Arun Raaza and Hema Shree. S

Abstract—A novel low cost mobile controlled home security system to avoid burglary and other unlikely events is proposed. The proposed system when installed in home/office informs the user rapidly by calling their mobile phone in case of unlikely events. In addition any required electrical/electronic appliances are controlled using this system.

Keywords - Mobile Communication; DTMF Technology; Information Technology

INTRODUCTION

Remotely controlling electrical/electronic

components through mobile phones with DTMF [1] have

become more popular these days. The electrical/electronic

systems are controlled by both dialing [2] and SMS sending

[3]. However due to the inbuilt software the dialing and

SMS sending systems becomes more expensive. The

security system through software related dialing and SMS

sending is more risky and complicated because of its delay

in sensing and communication. The software part should be

minimized in case of mobile controlled security system to

provide a real time rapid sensing and communication to the

users.

This paper relates to the system of

providing complete security system to office or home with

the help of mobile phone. The users are provided with the

product which constitutes of a main kit and any number of

sub kits and add on sub kits as required. Main kit can be

placed anywhere inside the house/office, the sub kits are

placed near doors, windows and any other places where

entry inside the house/office is possible and add on sub kits

are placed anywhere in the house as required. If there is

any unlikely event happening in house/office like breaking

of doors and windows by thieves, anonymous entry of

thieves the sub kits senses it and transmits the signal to

main kit and if there is leakage of LPG gas, leakage of

smoke the add on sub kits senses it and transmits the

signals to main kit which in turn communicates the product

user’s mobile phone by calling and warning them exactly

on unlikely event that is happening in the place. In addition

to this the power main on/off, door or window lock/unlock

and electrical/electronic appliances on/off/controlling of the

product installed place can be controlled by product user’s

mobile phone. Since the entire system uses DTMF

technology the product-user phone communication can be

from anywhere in the world. The unlikely event is recorded

by the video camera for future reference. The product is

compatible with 2G, 3G, 4G, 5G and other latest

technologies. The cost of the product is low compared to

any security system as it involves mainly hardware

integration with only less software.

APPLICATIONS

The following are the applications of the device

I. Low cost

II. User friendly and simple to use

III. Door lock/unlock – convenient for allowing anyone

inside the house during the time of need

IV. Main power on/off and electrical/electronic

appliances control

V. Provides high safety

VI. Compatible with future technology and upgradeable

BRIEF DESCRIPTION OF DRAWINGS

Fig. 1(a) and 1(b) shows the circuit

diagram for Main Kit. 1(a) constitutes of receiving unit,

transmitting unit and voice unit. The receiving chip after

receiving the signal from the sub kit/add on sub kit sends

the same to HT12D IC [4] which sends the signal to IC 7404

for converts the signal to voltage and then transmits it to

L293D which sends the signal to relay. The relay acts as a

switch for two functions i.e. one for sending the signals to

cell phone in main kit which makes call to the user’s mobile

phone and second function is to receive the signals from

voice unit which is again sent to cell phone. The voice unit

operates at 12V and constitutes of number of switches.

1 (b) constitutes of cell phone control unit

which operates in 12V and is used to control

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electrical/electronic components of the product installed

environment. The main power on/off, door lock/unlock, air-

condition system on/off/controlling, refrigerator

on/off/controlling, siren on/off and other electronic system

controlling is also done via this circuit. The signal from

user’s mobile phone is transmitted to the cell phone in the

main kit by calling them and pressing the function assigned

number. The received signal is made to enter IC 8870 and

then to IC 4026 which changes the signal into voltage. The

voltage then enters relay which again acts as switch

performing the assigned action over the electrical/electronic

appliances.

Fig. 2 shows the circuit diagram of sub kit. The sub kit

consists of motion control sensor which is used to receive

signal in case of unwanted movement and transmitter to

transmit the signal to main kit. In sub kit 230 V AC is

converted into 12 V DC using 1K 1W resistor, 0.47µf 400V

capacitor and a bridge rectifier. The 12V DC is made to

enter motion control sensor which helps in transmitting.

Fig. 1 (a) Receiving/Transmitting/Voice Unit of Main Kit

T 1

T 2

T 3

L E D 370Ω

15µf 12v

IC 7805

R L 1

R L 2

R L 3

O ut put

O ut put

C ell phone connection

12 v D .C

1. D1 ,D2,D3& D4 - IN4007

2. T1,T2&T3 – B C 587

S P E C F IC ATIONS

3. R L 1,R L 2&R L 3 – R elay 12v

0.01µf

1k

Fig. 1 (b) Cell Phone Control Unit of Main Kit

Fig. 2 Circuit Diagram of Sub Kit

WORKING

The main kit is placed anywhere inside

the house and the sub kit placed near the door. In case of

unwanted or anonymous entry of person the motion

control sensor senses it and transmits the signal to the main

kit. The main kit receives the signal using receiving unit

and makes the call to the user’s mobile phone along with an

alarm beep which scary away thieves. In case of big

office/bungalow multiple sub kits are placed to tighten up

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the security as all the sub kits can communicate the main

kit during the times of unlikely events. Also add on sub kits

like smoke detector kit, gas sensor kit and other sensor kits

can be integrated to main kit in the same process as that of

sub kit. The switches in the voice unit are assigned to any

number of sensors like motion control, gas, smoke etc as

required by the users. The pre recorded voice is heard in

user’s mobile phone after receiving the call.

The voice unit informs the users

explaining the exact unlikely event that has happened in

the house since respective sensors in sub/add on sub kit

and voice unit from the main kit are integrated. In case of

power failure battery back up for 24 hours is given. In

addition to all of the above function a cell phone control

unit is provided in the main kit. The cell phone control unit

is used to control any required electrical/electronic

appliances in the house. After calling the main kit by user’s

phone the operations are performed using the numbers in

user’s mobile phone. The numbers in the main kit mobile

corresponds to the numbers in user’s mobile using DTMF

technology thus performing pre assigned functions over

any electrical/electronic appliances in the house. The door

lock/unlock, aircon on/off/controlling, refrigerator

on/off/controlling, television on/off/controlling etc is

performed using cell phone control kit.

CONCLUSION

A novel simple, low cost mobile controlled security system

which provides rapid communication to product user’s

mobile phone in case of unlikely events is proposed. In

addition the device helps to lock/unlock the door for guest

to enter and leave, to switch the power main on/off and to

control any required electrical/electronic systems by the

user’s mobile phone. The product also is devoid of software

system so as to avoid time delay in communication and

high cost

REFERENCES

[1] Ladwa. T. M, Ladwa. S. M, Kaarthik. R. S, Dhara. A. R and Dalei.

N, “Control of Remote Domestic System Using DTMF”, International Conference on Instrumentation, Communications, Information Technology, and Biomedical Engineering, 23-25 Nov 2009, pp 1-6

[2] Yu Chen, “Distributed Guarding and Alarm System Based on Telephone Automatical Dialing and Remote Communication Technology”, International Conference on Network Security, Wireless Communications and Trusted Computing, 25-26 April 2009, pp 44-47

[3] Malik Sikandar et al, “SMS Based Wireless Home Appliance Control System (HACS) for Automating Appliances and Security”, Issues in Informing Science and Information Technology, Voluem 6 2009, pp 887-894

[4] Daneshmand. M, Chonggang Wang and Shoraby. K, “A New Slot-Count selection Algorithm for RFID Protocol”, International Conference on Communications and Networking, 22-24 August 2007,pp926-930

Arun Raaza received his B. Tech Electronics and Communication

Engineering by 2007 at Chennai and did his Master of Research

Photonics and Communication at Swansea University, United

Kingdom by 2009 and soon to complete his Ph. D in Communication

systems at Chennai. Arun Raaza has several patents and numerous

IEEE publications and is member of IEEE since 2007. Arun Raaza has

attended and presented papers held at USA, UK, Japan, China,

Singapore, Malaysia and Dubai. He acted as IEEE Symposium chair

At IEEE WCNIS China 2010, awarded as Best achiever of 2003-2007

Engineering batch at Dr. MGR University, declared as Swansea

University, UK ambasaddor by 2009. Received best paper at

Knowledge Utsav 2010, Banglore, India’s largest R&D conference.

Hema Shree is currently studying 2nd year B. Tech/ECE in Dr. MGR

University and working in Internship projects for ARCOMM.