design and implementation of remote home security system based on wsns and gsm technology

I. SYAM KRISHNA* et al. ISSN: 2250–3676

[IJESAT] INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE & ADVANCED TECHNOLOGY Volume-2, Special Issue-1, 139 – 142

IJESAT | Jan-Feb 2012

Available online @ http://www.ijesat.org 139

DESIGN AND IMPLEMENTATION OF REMOTE HOME SECURITY

SYSTEM BASED ON WSNS AND GSM TECHNOLOGY

I. Syam Krishna1, J.Ravindra

2

1Research Scholar, Department of ECM, K.L.University, A.P, India, [email protected]

2 [email protected]

Abstract Security has been an important issue in the smart home applications. Conventional security systems keep home owners, and their

property, safe from intruders. A smart home security system, however, offers many more benefits. The system is composed of the

microcontroller based wireless sensor network center node with GSM module, data collecting node, device control node and

mobile phone. The wireless sensor network data collecting node module is connected with Pyroelectric Infrared Detector,

Temperature Sensor ,Smoke Detector and Gas Sensor separately. When the PIR finds that some people intrudes into the house or

when the temperature sensor detects too high indoor temperature or when the gas sensor detects leakage of gas, the data

collecting node will send encoded alarm signal to the wireless sensor network center node through the wireless sensor network

established in home. Once the Wireless sensor network center node receives alarm signal, it will send alarm short message to the

users through the GSM module and GSM network immediately. Similarly the user can also control the various devices connected with

device control unit through SMS. In recent years, the world is facing a common problem that the number of elderly people is

increasing. Hence, the problem of home-care for elderly people is very important. In recently, wireless sensor networks are used to

structure home-care system in many researches. Wireless sensor networks application for physiological signals communication

transmission has many technologies. Such as the Infrared, Bluetooth and ZigBee etc. Because the angle limit problem of the infrared

transmission, and the infrared have not be used for Physiological signal transmission. Although Bluetooth is better than ZigBee for

transmission rate, but ZigBee has lower power consumption. Hence, ZigBee is generally used for 24 hours monitor of communication

transmission systems. The first procedures of the system that we use the biosensor to measure heart rate and blood pressure from

human body, Using Zigbee the measured signal send to the PC via the RS-232 serial port communication interface. We can send the

signal to remote PC or PDA from the internet. In particular, when measured signals over the standard value, the personal computer

will send GSM short message to absent manager’s mobile phone.

Index Terms: Remote Control, SMS, Micro-Controller, Cell Phone, Wireless Sensor Networks, Global System for Mobile

Communication, PDA.

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1. INTRODUCTION

Security has been an important issue in the smart home

applications. Conventional security systems keep

homeowners, and their property, safe from intruders. A smart

home security system, however, offers many more benefits. A

smart home or building is a home or building, usually a new

one that is equipped with special structured wiring to enable

occupants to remotely control or program an array of

automated home electronic devices by entering single

command. For example, a homeowner on vacation can use a

Touchtone phone to arm a home security system, control

temperature gauges, switch appliances on or off, control

lighting, program a home theater or entertainment system, and

perform many other tasks. The WSN data collecting node

module is connected with Pyroelectric Infrared Detector,

Temperature Sensor, Smoke Detector and Gas Sensor

separately. When the PIR finds that some people intrudes into

the house or when the temperature sensor detects too high

indoor temperature or when the gas sensor detects leakage





of gas, the data collecting node will send encoded alarm

signal to the WSN center node through the wireless sensor

network established in home. Once the WSN center node

receives alarm signal, it will send alarm short message to the

users through the GSM module and GSM network

immediately. Similarly the user can also control the various

devices connected with device control unit through SMS.

Using Bio sensors to measure heart rate and blood pressure

from human body this method is using especially for old

people. Biosensor senses data and send to the owners or users

mobile phone.

.2. SYSTEM STRUCTURE & OPERATION

Fig 1. Shows block diagram of the system.

In the above Fig 1. Shows block diagram of the system PIR

device does not emit an infrared beam but passively accepts

incoming infrared radiation. PIR sensor detects the presence

of human in the home and generates pulse which is read

by the microcontroller. According to the pulse received by

microcontroller, a call is established to mobile station through

a GSM modem and thus warns the presence of human in the

home to owner-occupier. On the other hand this security

system remains in idle position and performs nothing if no one

is in the home. When the temperature sensor detects too high

indoor temperature and at the same time, the smoke sensor

detects over proof smoke concentration; or when the gas

sensor detects over proof combustible gas concentration, the

sensors will send encoded alarm signal to the home control

center through the wireless sensor network established in

home. Once the wireless control center receives alarm signal,

it will send alarm short message to the users through the GSM

module and GSM network immediately.

3. DESIGN OF SYSTEM HARDWARE

System hardware designing composed of one center node

module and several data collection node modules operating in

point-to-multipoint communication node. In this sensor node

consists of four parts: Data collection module, Data processing

Module, Wireless communication module and power

managing module.

The Data collecting module consists of sensors and conversion

module. The data processing module is responsible to save

and deal with the data collected by the sensors and received

from other nodes.

3.1 Selection of ARM processor:

In this using ARM7 processor for controlling purpose.ARM

main control module is composed of the ARM Controller,

FLASH, SDRAM and related peripheral circuits. The

ARM controller's main functions are operating alarm

input and output I / O port and other parts , at the same time,

achieving the acceptance and transmission of data, GPRS

network communication and other functions, Therefore, the

system need to choose more general-purpose I / O port and

rich external resources for being easy to build chips of

peripheral circuits.

3.2 Selection of GSM module:

In this using TC35 dual band GSM 1800 modem. The TC35

Terminal is a compact GSM modem for the transfer of data,

voice, SMS and faxes in GSM networks. Industrial standard

interfaces and an integrated SIM card reader mean it can be

used rapidly, easily and universally as a dual band GSM

Terminal. Its performance band width and the robust housing

make it easier to quickly implement new applications in areas

such as telemetry and telematics.

The features, functions and interfaces of the GSM Terminal

TC35 are described below. The functionality of the Terminal

corresponds to the features of the TC35 module, to which a

SIM card reader, an RS232 interface, an analog interface for

the handset interface and a greater supply voltage range have

been added. All the external interfaces of the GSM Terminal

TC35 T are integrated permanently in the housing. The plug-

in connections are standardized and suitable for use under

vibration.

The TC35 GSM 1800 main advantage is compact and low

power consumption and support dual frequency and provide





standard AT commands interface to users. It is main use in

this system because of its high quality sms function.

4. DESIGN OF SYSTEM SOFTWARE

The software design is first wireless sensor node

communication. After designing of wsn node communication

next designing of GSM communication. In this GSM

communication when the wireless sensor node module

receives a abnormal data it will drive TC35 GSM Module. It

supports Standard AT commands. The system software

developed in Embedded C language has the ability of

collecting, wireless receiving and transmitting data, and can

send a piece of alarm short message to the user’s mobile

phone when some dangerous condition has been detected.

With the advantages of reliability, easy usage, complement

wireless, and low power consumption, the system also has

practical value in other fields.

5. GSM MODEM INTERFACING SEGMENT

This segment is shown in Fig. 2. As GSM modem uses serial

communication to interface with other peripherals, an

interface is needed between MCU and GSM modem. This

segment consists of four parts:

DB9 male connector: The serial port used here is a 9 pin DB9

male connector as the GSM modem side uses a female

connector. Pin 14 and 13 of MAX232 are connected to pin 2

and 3 ofOB9 respectively. Pin 5 ofOB9 is grounded.

MAX232: This particular IC is necessary for increasing the

voltage swing at the outputs. It takes OV and +5V inputs and

makes it a + 12V and -12V output voltages. This increased

voltage swing is a requirement for serial communications.

Two 1 /IF capacitors are connected between pins 4, 5 and 1, 3

of MAX232. V+ and V-pins are fed from VCC and GNO, i.e.

Ground through two 1 /IF capacitors. Between VCC and GNO

pins, one 10 /IF capacitor is placed.

GSM modem: GSM modem is connected through a OB9

female connector to the interfacing circuit.

MCU: The VCC, i.e. Power pin, TTL input and TTL output

pins of MAX232 are connected to the pins RCO, RCI and

RC2 of MCU respectively.

Fig 2.GSM modem interfacing segment

6. SYSTEM PROTOTYPE AND TEST

According to Fig.1, we set up a sample prototype system

.First, choose ARM7 as the data processing unit of WSN

center node module and data collecting node module.

Temperature sensor embedded that can detect the in-room

temperature. After hardware connection, install the

appropriate software developed with Embedded C on Micro

controller-based indoor wireless control center. Then, it can

start test with this prototype system by changing the preset

temperature threshold. When the actual in-room temperature

exceeds this preset temperature threshold, the control center

will immediately trigger TC35 GSM module to send an alarm

short message to our mobile phone and user can stop devices

automatically with message. Through the test process, this

prototype system operated successfully and effectively with

reliable and well communication.

7. CONCLUSION AND FURTHER

RECOMMEDATIONS

This paper presents one solution for establishing a low-power

consumption remote home security alarm system. The system,

based on WSN and GSM technology, can detect the theft,

leaking of raw gas and fire, and send alarm message remotely.

The hardware of this system includes the single chip, wireless

receiving and sending chip as the TC35 GSM module. The

system software developed in Embedded C language has the

ability of collecting, wireless receiving and transmitting data,

and can send a piece of alarm short message to the user’s

mobile phone when some dangerous condition has been

detected and users automatically stop the devices with

messages.





At present, the system can also be hardware and software

upgrades and integration of new functional modules to meet

the intelligent home security on the future development needs.

Tested showed that the stable operation of the system to

achieve the design requirement. The system also can be used

in banks, libraries and museums, such as required security and

remote monitoring of the place.

Table1. List of AT commands used in GSM interface.

REFERENCES

[1] Automated advanced industrial and home security using

GSM and FPGA, Department of Electronics and

Communication Engineering BV.CEngineeringCollege,

Odalarevu, Amalapuram, India.

[2] Design and Implementation of Pyroelectric Infrared Sensor

Based Security System Using Microcontroller, Proceeding of

the 2011 IEEE Students’ Technology Symposium 14-16

January, 2011, IIT Kharagpur.

[3] Design of Smart Home Remote Monitoring System

Based on Embedded System, Yanni Zhai,Xiaodong Cheng

College of Electronic Information Engineering, Inner

Mongolia University, Hohhot 010021, P.R. China,2011.

[4] AT Commands Set for Nokia GSM and WCDMA

products, Version 1.2, July 2005, available

[5] A ZigBee Based Embedded Remote Control System, 2010

2nd International Conference on Signal Processing Systems

(ICSPS).

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“Study on Smart Home Network Technology Based on

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Chinese).

[7] Ren Fengyuan, Huang Haining, Lin Chuang, “Wireless

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pp.1282-1291, March, 2003 (in Chinese).

design and implementation of remote home security system based on wsns and gsm technology

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