project report on gsm based home security system
DESCRIPTION
project reportTRANSCRIPT
A PROJECT REPORT
ON
GSM BASED HOME SECURITY SYSTEM
Submitted by
PIYUSH MALHOTRA
PRATEEK ARORA
LIPIKA SUKHIJA
Under the Guidance of
MS. SUNANDA
ASSISTANT PROFESSOR
in partial fulfillment for the award of the degree of
BACHELOR OF TECHNOLOGY
IN
ELECTRONICS AND COMMUNICATION
Faculty of Engineering & Technology
Manav Rachna International University, Faridabad
JUNE, 2013
I
ACKNOWLEDGEMENT
We would like to express our sincere gratitude to our project guide “MS. SUNANDA”
for giving us the opportunity to work on this topic. It would never be possible for us to
take this project to this level without her innovative ideas and her relentless support and
encouragement.
1. PIYUSH MALHOTRA, FET/EC(F)/208
2. PRATEEK ARORA, FET/EC(F)/210
3. LIPIKA SUKHIJA, FET/EC(F)/235
II
DECLARATION
We hereby declare that this project report entitled “GSM BASED HOME SECURITY
SYSTEM” PIYUSH MALHOTRA (FET/EC(F)/208) , PRATEEK ARORA
(FET/EC(F)/210) , LIPIKA SUKHIJA(FET/EC(F)/235) being submitted in partial
fulfillment of the requirements for the degree of Bachelor of Technology in
ELECTRONICS AND COMMUNICATION under Faculty of Engineering &
Technology of Manav Rachna International University Faridabad, during the academic
year 2013, is a bonafide record of our original work carried out under guidance and
supervision of MS. SUNANDA, ASSOCIATE PROFESSOR, ECE DEPARTMENT
and has not been presented elsewhere.
1. PIYUSH MALHOTRA, FET/EC(F)/208
2. PRATEEK ARORA, FET/EC(F)/210
3. LIPIKA SUKHIJA, FET/EC(F)/235
Manav Rachna International University, Faridabad
Faculty of Engineering & Technology
Department of Electronics and Communication
JUNE, 2013
III
CERTIFICATE
This is to certify that this project report entitled “GSM BASED HOME SECURITY
SYSTEM” PIYUSH MALHOTRA (FET/EC(F)/208) , PRATEEK ARORA
(FET/EC(F)/210) , LIPIKA SUKHIJA (FET/EC(F)/235), submitted in partial fulfillment
of the requirements for the degree of Bachelor of Technology in ELECTRONICS AND
COMMUNICATION under Faculty of Engineering & Technology of Manav Rachna
International University Faridabad, during the academic year 2013, is a bonafide record of
work carried out under my guidance and supervision.
(Signature of Project Guide)
MS. SUNANDA
ASSISTANT PROFESSOR
Department of Electronics and Communication
Faculty of Engineering & Technology
Manav Rachna International University, Faridabad
(Signature of HOD)
Mrs. Geeta Nijhawan
Official Seal
IV
TABLE OF CONTENTS
Acknowledgement i
Declaration ii
Certificate iii
Table of Contents iv
List of Figures v
List of Tables vi
Abstract vii
Chapter Page No
I. Introduction
I.1 Goals and Objectives: What are to be achieved?
Motivation: Why this project undertaken?
Method: How was it carried out?
I.2 Overview of the technical area i.e. background technical context
I.3 Overview of the report: what material will you be covering and
how it is arranged in the report
I.4 Problem Statement
I.5 Conclusion
II. Literature Review
V
II.1Introduction
II.2Survey
II.3Conclusion
III. Problem Definition and Requirement Analysis
III.1 Problem Definition
III.2 Requirements
III.3 System Specifications
IV. Design and Implementation
IV.1 Introduction
IV.2 Functional Decompositions
IV.3 Different Design Options
IV.4 Proposed Flow Model
IV.5 Circuit Design
IV.6 Assembly of Hardware and Components
V. Testing and Deployment
V.1Verification
V.2Validation
V.3Evaluation
VI. Conclusion and Future Enhancements
VI.1 Conclusion
VI.2 Critical appraisal of work done
VI.3 Proposal/scope of future enhancement
VI
References/Bibliography
VII
LIST OF FIGURES:
Figure 1:ARDUINO........................................................................................................................22
Figure 2: LCD DISPLAY...................................................................................................................23
Figure 3: LM324 PIN DIAGRAM.....................................................................................................24
Figure 4: LM35 (TEMPERATURE SENSOR).....................................................................................26
Figure 5: IR SENSORS....................................................................................................................28
Figure 6: GSM MODEM.................................................................................................................29
Figure 7: LED.................................................................................................................................30
Figure 8: PROPOSED FLOW MODEL..............................................................................................34
Figure 9: CIRCUIT DIAGRAM.........................................................................................................35
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ABSTRACT
The final year project aims at exposing the students undergoing higher technical studies
to the thoughts and logic that must be developed to ensure that one is able to integrate
his/her ideas into something concrete. This generally is initiated by the inception of an
idea or a concept, which not only aims at developing a product (Hardware or Software),
but also the in-depth study of the earlier existing products in the same category and their
deficiencies. Accordingly an approach is taken to propose a solution, which is better from
the previous ones in one respect or the other.
With the same approach in mind, we, the final year students of Bachelor of Technology
(Electronics and Telecommunication), have taken up the GSM Based Home Security
System as our final year project.
In this project for the security purpose, we will look after:
1) Forced entry through window.
2) Increase of Temperature beyond limit.
3) Password for the opening of door.
In all the above cases, a message will be sent to the home owner and she/ he will be
informed of the situation.
CHAPTER 1
IX
INTRODUCTION
1.1 GOALS AND OBJECTIVES
The final year project aims at exposing the students undergoing higher technical studies
to the thoughts and logic that must be developed to ensure that one is able to integrate
his/her ideas into something concrete. This generally is initiated by the inception of an
idea or a concept, which not only aims at developing a product (Hardware or Software),
but also the in-depth study of the earlier existing products in the same category and their
deficiencies. Accordingly an approach is taken to propose a solution, which is better from
the previous ones in one respect or the other.
With the same approach in mind, we, the final year students of Bachelor of Technology
(Electronics and Telecommunication), have taken up the ADVANCE GSM BASED
HOME SECURITY SYSTEM as our final year project.
Automated security systems are a useful addition to today’s home where safety is an
important issue. Vision-based security systems have the advantage of being easy to set
up, inexpensive and non-obtrusive. Home security system for detecting an intrusion into a
monitored area by an infrared detector, a password based entrance and a temperature
sensor. A security system has a free-standing intrusion detector. The free standing
intrusion detector has a transmitter coupled with a portable receiver to alert a homeowner
that an intrusion has taken place or if there are is some risk of fire inside the house.
1.1.1) Motivation
In today’s age of digital technology and intelligent systems, home automation has
become one of the fastest developing application-based technologies in the world. The
idea of comfortable living in home has since changed for the past decade as digital, vision
and wireless technologies are integrated into it. Intelligent homes, in simple terms, can be
described as homes that are fully automated in terms of carrying out a predetermined
task, providing feedback to the users, and responding accordingly to situations. In other
words, it simply allows many aspects of the home system such as temperature and
lighting control, network and communications, entertainment system, emergency
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response and security monitoring systems to be automated and controlled, both near and
at a distance.
Automated security systems play an important role of providing an extra layer of security
through user authentication to prevent break-ins at entry points and also to track illegal
intrusions or unsolicited activities within the vicinity of the home (indoors and outdoors). There
has been much research done in the design of various types of automated security
systems. Sensor-based systems that rely on contact or movement sensors or contact-based
systems such as fingerprint and palm print scan or keypad activation that require substantial
amount of contact with an input device.
Many security systems are based on only a single system. In an event of system failure or
intrusion of the user authentication, there is no backup system to monitor the home
continually. This shortcoming can be dealt with using multiple security systems (ormulti-
layered security systems). However, multi-system implementations will definitely be
more demanding in terms of computational cost and organization.
1.1.2) Method
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 Infrared
Detector, Temperature Sensor, entrance locked with the help of keypad. When the IR
finds that some people intrudes into the house or when the temperature sensor detects too
high indoor temperature or when the password entered is incorrect, 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.
According to the pulse received by microcontroller, a message is sent 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 sensors will send encoded alarm signal to the home
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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.
1.2) OVERVIEW OF TECHICAL AREA
The report consists of a background into the area of ARDUINO microcontroller and
mobile communication, how they are interfaced to each other and
AT (Attention) commands set used in communication. The Microcontroller based system
continuously watching the security issues of your house, if any mishap condition from
above three is occur it will sense and send a message to your mobile.
The main components of the toolkit include microcontroller, GSM modem. These
components are integrated with the device board and thus incorporate the wireless
features. The GSM modem sends the SMS. The AT commands are serially transferred
to the modem. In return the modem transmits the stored message through the wireless
link. The microcontroller used in this case is ATMEGA328. In this prototype model,
LCD display is used for simulation purpose. The results presented in the thesis support
the proper functionalities and working of the system. The timing diagram suggests the
response of the modem to various AT (attention) commands.
1.3) OVERVIEW OF THE REPORT
The proposed integration architecture incorporates subsystems – IR sensors, burglar
alarm module and fire alarm module, into a single automated architecture for practical
implementation in intelligent home environments. The figure shows a block diagram of
the proposed system architecture and its setup and connectivity. The modules work
independently and parallely but share computational resources.
THE project includes Problem Definition, Requirements, Specifications of arduino
ATMEGA328, response of GSM modem to the AT commands, block diagram, circuit
diagram and the proposed flow model for the development of the program.
1.2 PROBLEM STATEMENT
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Technology has advanced so much in the last decade or two that it has made life more
efficient and comfortable. The comfort of being able to take control of devices from one
particular location has become imperative as it saves a lot of time and effort. Therefore
there arises a need to do so in a systematic manner which we have tried to implement
with our system. The system we have proposed is an extended approach to automating a
control system.
With the advancement and breakthroughs in technology over the years, the lives of
people have become more complicated and thus they have become busier than before.
With the adoption of our system, we can gain control over certain things that required
constant attention. The application of our system comes in handy when people get to
know about the remote intrusions in their house or if there is some mishap when they are
not at their place.
1.3 CONCLUSION
In the paper low cost, secure, ubiquitously accessible, auto-configurable, remotely
controlled solution for automation of homes has been introduced. The approach discussed
in the paper is novel and has achieved the target to control home appliances remotely
using the SMS-based system satisfying user needs and requirements.
GSM technology capable solution has proved to be controlled remotely, provide home
security and is cost-effective as compared to the previously existing systems. Hence we
can conclude that the required goals and objectives of our project have been achieved.
The basic level of home appliance control and remote monitoring has been implemented.
The system is extensible and more levels can be further developed using automatic
motion/glass breaking detectors so the solution can be integrated with these and other
detection systems.
In future the system will be small box combining the PC and GSM modem. The hardware
will be self-contained and cannot be prone to electric failure. This appliance will have its
own encapsulated UPS and charging system.
CHAPTER 2
XIII
LITERATURE REVIEW
2.1) INTRODUCTION
Home security has been a major issue where crime is increasing and everybody wants to
take proper measures to prevent intrusion. In addition, there is need to automate home so
that the user can take the advantage of technological advancement. This project presents a
model that will provide security to their home, office or cabin etc via SMS using GSM
technology.
Keeping in view the rapid growth of wireless communication we are inspired to work on
this project. The idea behind this project is to meet the upcoming challenges of the
modern practical applications of wireless communication and to facilitate our successors
with such splendid ideas that should clear their concept about wireless communication
and control system.
The applications of SMS/GSM Based security system are quite diverse. There are many
real life situations that require control of different devices remotely and to provide
security. There will be instances where a wired connection between a remote
appliance/device and the control unit might not be feasible due to structural problems. In
such cases a wireless connection is a better option.
Basic Idea of our project is to provide GSM Based security even if the owner is away
from the restricted areas. For this we adopted wireless mode of transmission using GSM.
Beside this there are many methods of wireless communication but we selected GSM in
our project because as compared to other techniques, this is an efficient and cheap
solution also, we are much familiar with GSM technology and it is easily available.
2.2) SURVEY
The researchers gathered information from different sources which give appropriate ideas
or what parts to be used in every circuitry involved in this project. Keypad interfacing to
microcontroller using embedded C was the hardest part ever encountered during the
development stage. From a step by step process, researchers started from writing simple
code to more complex. After everything is fixed and tested in virtual simulation, the
researchers soldered everything for implementation stage. Researchers faced many
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problems on hardware such as fine tuning every sensor to work simultaneously with the
burnt program inside the microcontroller. By eliminating those problems gives good and
accurate anticipated result.
Same project could have been designed with:
1) 8051 microcontroller
2) ARDUINO
We are using ATmega 328 to realize this project because:
Using an Arduino simplifies the amount of hardware and software development you need
to do in order to get a system running.
The Arduino hardware platform already has the power and reset circuitry setup as well as
circuitry to program and communicate with the microcontroller over USB. In addition,
the I/O pins of the microcontroller are typically already fed out to sockets/headers for
easy access (This may vary a bit with the specific model).
On the software side, Arduino provides a number of libraries to make programming the
microcontroller easier. More useful are things such as being able to set I/O pins to PWM
at a certain duty cycle using a single command or doing Serial communication.
The greatest advantage is having the hardware platform set up already, especially the fact
that it allows programming and serial communication over USB.
2.3) CONCLUSION:
After reviewing the possible solutions, my team decided to use ARDUINO to make this
project. According to the advantage of ARDUINO over other Microcontrollers, we made
this decision.
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CHAPTER 3
PROBLEM DEFINITION AND REQUIREMENT
ANALYSIS
3.1) PROBLEM DEFINITION
With all the necessary background research completed it became clear what basic design
components the entire system would require. First we needed the power to be supplied to
the designed model which will turn on the components. Then, if a person enters house
from outside the window or enters wrong password for consecutively 3 times then
microcontroller will generate the message and will send the message to the authorized
user using the GSM modem. In case, the temperature inside the house increases beyond
limits then also arduino will perform the same operation.
We needed to voltage regulator 7805 convert the 12v to 5v as some components are there
which run by 5v. A proper AT command set is to be defined so that the arduino will
perform accurately.
3.2) REQUIREMENTS
ARDUINO BOARD WITH ATMEGA 328
GSM 300
SIM CARD-VODAFONE
OP AMP-LM 324
IR SENSORS
IC BASES
MOBILE PHONE
TEMPERATURE SENSOR- LM35
RIBBON WIRES
TRANSFORMER
BUTTON SWITCHES
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VOLTAGE REGULATOR-7805
CAPACITORS
PCBs
LEDs
2 PIN CORD
WOODEN BLOCK
A4 SHEETS
FEVICOL
GLUE GUN
DVD TRAY
ADAPTER- 12V
CPU FAN
RESISTORS
HEAT SINK
PIN WIRES
SOLDER IRON
SOLDER WIRE
DIODES
3.3) SYSTEM SPECIFICATIONS
1. ARDUINO
Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use
hardware and software. It's intended for artists, designers, hobbyists, and anyone
interested in creating interactive objects or environments.
Arduino can sense the environment by receiving input from a variety of sensors and can
affect its surroundings by controlling lights, motors, and other actuators. The
microcontroller on the board is programmed using the Arduino programming language
and the Arduino development environment. Arduino projects can be stand-alone or they
can communicate with software running on a computer (e.g. Flash, Processing,).
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The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has
14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a
16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset
button. It contains everything needed to support the microcontroller; simply connect it to
a computer with a USB cable or power it with a AC-to-DC adapter or battery to get
started.
Features:-
Microcontroller: ATmega328
Operating Voltage: 5V
Input Voltage (recommended): 7-12V
Input Voltage (limits): 6-20V
Digital I/O Pins: 14 (of which 6 provide PWM output)
Analog Input Pins: 6
DC Current per I/O Pin: 40 mA
DC Current for 3.3V Pin: 50 Ma
Flash Memory: 32 KB of which 0.5 KB used by bootloader
SRAM: 2 KB (ATmega328)
EEPROM: 1 KB (ATmega328)
Clock Speed: 16 MHz
Power
The Arduino Uno can be powered via the USB connection or with an external power
supply. The power source is selected automatically.
External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or
battery. The adapter can be connected by plugging a 2.1mm center-positive plug into the
board's power jack. Leads from a battery can be inserted in the Gnd and Vin pin headers
of the POWER connector.
The board can operate on an external supply of 6 to 20 volts. If supplied with less than
XVIII
7V, however, the 5V pin may supply less than five volts and the board may be unstable.
If using more than 12V, the voltage regulator may overheat and damage the board. The
recommended range is 7 to 12 volts. The power pins are as follows:
VIN. The input voltage to the Arduino board when it's using an external power
source (as opposed to 5 volts from the USB connection or other regulated power
source). You can supply voltage through this pin, or, if supplying voltage via the
power jack, access it through this pin.
5V.This pin outputs a regulated 5V from the regulator on the board. The board
can be supplied with power either from the DC power jack (7 - 12V), the USB
connector (5V), or the VIN pin of the board (7-12V). Supplying voltage via the
5V or 3.3V pins bypasses the regulator, and can damage your board. We don't
advise it.
3V3. A 3.3 volt supply generated by the on-board regulator. Maximum current
draw is 50 mA.
GND. Ground pins
Memory
The ATmega328 has 32 KB (with 0.5 KB used for the boot loader). It also has 2 KB of
SRAM and 1 KB of EEPROM.
Input and Output
Each of the 14 digital pins on the Uno can be used as an input or output, using pin mode,
digital write, digital read functions. They operate at 5 volts. Each pin can provide or
receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by
default) of 20-50 kOhms. In addition, some pins have specialized functions:
Serial: 0 (RX) and 1 (TX). Used to receive (RX) and transmit (TX) TTL serial
data. These pins are connected to the corresponding pins of the ATmega8U2
USB-to-TTL Serial chip.
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External Interrupts: 2 and 3. These pins can be configured to trigger an
interrupt on a low value, a rising or falling edge, or a change in value.
PWM: 3, 5, 6, 9, 10, and 11. Provide 8-bit PWM output with the analog write
function.
LED: 13. There is a built-in LED connected to digital pin 13. When the pin is
HIGH value, the LED is on, when the pin is LOW, it’s off.
The Uno has 6 analog inputs, labeled A0 through A5, each of which provide 10 bits of
resolution (i.e. 1024 different values). By default they measure from ground to 5 volts,
though is it possible to change the upper end of their range using the AREF pin and the
analog reference function. There are couple of other pins on the board:
AREF. Reference voltage for the analog inputs. Used with analog reference.
Reset. Bring this line LOW to reset the microcontroller. Typically used to add a
reset button to shields which block the one on the board.
Figure 1:ARDUINO
2. LM324
XX
Since the output voltage from voltage divider varies with the intensity of IR light, and
microcontroller is not used in this project, a comparator (LM324) is used to
show the changes.
Features:-
• Internally Frequency Compensated for Unity Gain
• Large DC Voltage Gain: 100dB
• Wide Power Supply Range:
LM324: 3V~32V (or ±1.5 ~ 16V)
• Input Common Mode Voltage Range Includes Ground
• Large Output Voltage Swing: 0V to VCC -1.5V
• Power Drain Suitable for Battery Operation
XXI
Figure 2: LM324 PIN DIAGRAM
3. TEMPERATURE SENSOR
The LM35 series are precision integrated-circuit temperature sensors, whose output
voltage is linearly proportional to the Celsius (Centigrade) temperature. The LM35 thus
has an advantage over linear temperature sensors calibrated in˚ Kelvin, as the user is not
required to subtract a large constant voltage from its output to obtain convenient
Centigrade scaling. The LM35 does not require any external calibration or trimming to
provide typical accuracies of ± 1⁄4˚C at room temperature and ± 3⁄4˚C over a full −55 to
+150˚C temperature range. Low cost is assured by trimming and calibration at the wafer
level. The LM35’s low output impedance, linear output, and precise inherent calibration
make interfacing to readout or control circuitry especially easy. It can be used with single
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power supplies, or with plus and minus supplies. As it draws only 60 µA from its supply,
it has very low self-heating, less than 0.1˚C in still air. The LM35 is rated to operate over
a −55˚ to +150˚C temperature range, while the LM35C is rated for a −40˚ to +110˚C
range (−10˚with improved accuracy).
Features:-
Calibrated directly in ˚ Celsius (Centigrade)
Linear + 10.0 mV/˚C scale factor
0.5˚C accuracy guarantee able (at +25˚C)
Rated for full −55˚ to +150˚C range
Suitable for remote applications
Low cost due to wafer-level trimming
Operates from 4 to 30 volts
Less than 60 µA current drain
Low self-heating, 0.08˚C in still air
Nonlinearity only ±1
4˚C typical
Low impedance output, 0.1 Ω for 1 mA load
Figure 3: LM35 (TEMPERATURE SENSOR)
4. INFRARED SENSOR
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The basic principle of IR sensor is based on an IR emitter and an IR receiver. IR emitter
will emit infrared continuously when power is supplied to it. On the other hand, the IR
receiver will be connected and perform the task of a voltage divider. IR receiver can be
imagined as a transistor with its base current determined by the intensity of IR light
received. The lower the intensity of IR light cause higher resistance between collector-
emitter terminals of transistor, and limiting current from collector to emitter. This change
of resistance will further change the voltage at the output of voltage divider. In others
word, the greater the intensity of IR light hitting IR receiver, the lower the resistance of
IR receiver and hence the output voltage of voltage divider will decreased. Usually the
IR emitter and IR receiver will be mounted side by side, pointing to a reflective surface.
The further distance away between emitter and receiver decrease the amount of infrared
light hitting the receiver if the distance between the sensor and a reflective surface is
fixed.
Features:-
Infrared Sensor Output: 4 to 20 mA
Accuracy: ±1% of reading or ±1°C whichever is greater
Repeatability: ±0.5% of reading or ±0.5°C whichever is greater
Emissivity: 0.2 to 1.0 via 4 to 20 mA input
Response Time t90: 240 mS (90% response)
Spectral Range: 8 to 14 µm
Supply Voltage: 24 Vdc (28 Vdc max)
Min Sensor Voltage: 6 Vdc
Max Loop Impedance: 900 Ω (4 to 20 mA output)
Input Impedance: 50 Ω Mechanical
Construction: Stainless Steel
Dimensions: 103 L x 18 mm D (4.05 x 0.71")
Thread Mounting: M16 x 1 mm pitch
Cable Length: 1 m (3.3') longer lengths available to order
Weight: 95 g (3.4 oz) with cable
Ambient Temperature Range: 0 to 70°C (32 to 158°F)
XXIV
Figure 4: IR SENSORS
5. GSM MODULE
Designed for global market, SIM300 is a Tri-band GSM/GPRS engine that works on
frequencies EGSM 900 MHz, DCS 1800 MHz and PCS1900 MHz. SIM300 provides
GPRS multi-slot class 10/ class 8 (optional) capability and support the GPRS coding
schemes CS-1, CS-2, CS-3 and CS-4.
With a tiny configuration of 40mm x 33mm x 2.85 mm, SIM300 can fit almost all the
space requirement in your application, such as Smart phone, PDA phone and other
mobile device.
The physical interface to the mobile application is made through a 60 pins board-to-board
connector, which provides all hardware interfaces between the module and customers’
boards except the RF antenna interface.
The keypad and SPI LCD interface will give you the flexibility to develop
customized applications.
Two serial ports can help you easily develop your applications.
Two audio channels include two microphones inputs and two speaker
outputs. This can be easily configured by AT command.
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Figure 5: GSM MODEM
Features:-
1. Support wide range of frequencies (from 850 MHZ to 1900 MHZ) for different
classification of GSM
2. Supports integration with RS232 cable (serial cable,25 pins).
3. Can be interfaced to system using USB cables.
4. Input voltage varies from 5v to 30v.
5. Very less weight in few grams.
6. Provided with SIM holder and antenna connector.
7. Programmable with AT commands.
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6. VOLTAGE REGULATOR
7805 is a voltage regulator integrated circuit. It is a member of 78xx series of fixed
linear voltage regulator ICs. The voltage source in a circuit may have fluctuations and
would not give the fixed voltage output. The voltage regulator IC maintains the output
voltage at a constant value. The xx in 78xx indicates the fixed output voltage it is
designed to provide. 7805 provides +5V regulated power supply. Capacitors of suitable
values can be connected at input and output pins depending upon the respective voltage
levels.
7. LIGHT EMITTING DIODE
A light-emitting diode (LED) is a semiconductor light source. LEDs are used as
indicator lamps in many devices, and are increasingly used for lighting. Introduced as a
practical electronic component in 1962, early LEDs emitted low-intensity red light, but
modern versions are available across the visible, ultraviolet and infrared wavelengths,
with very high brightness.
Color of the light (corresponding to the energy of the photon) is determined by the energy
gap of the semiconductor. An LED is often small in area (less than 1 mm2), and
integrated optical components may be used to shape its radiation pattern. LEDs present
many advantages over incandescent light sources including lower energy consumption,
longer lifetime, improved robustness, smaller size, faster switching, and greater durability
and reliability. LEDs powerful enough for room lighting are relatively expensive and
require more precise current and heat management than compact fluorescent lamp
sources of comparable output.
Figure 6: LED
XXVII
CHAPTER 4
DESIGN AND IMPLEMETATION
4.1) INTRODUCTION
The Microcontroller based system is continuously watching over the security issues of
your house, if any mishap condition occurs it will sense and send a message to your
mobile.
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 Infrared
Detector, Temperature Sensor.
When the IR finds that some people intrudes into the house or when the temperature
sensor detects too high indoor temperature , 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.
When the temperature sensor detects too high indoor temperature and at the same time,
the sensors will send encoded alarm signal to the home control centre through the
wireless sensor network established in home. Once the wireless control centre receives
alarm signal, it will send alarm short message to the users through the GSM module and
GSM network immediately.
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4.2) FUNTIONAL DECOMPOSITION
Table 1: FUNCTIONAL DECOMPOSITION
If any one of following 3 cases:
intrusion through window
Wrong password entered thrice
temperature rises beyond limit
Then,
These output will
be fed to arduino.
Arduino, with help
of GSM modem and
a SIM card will
send a message
accordingly.
The owner of the
registered number
will receive a
message and then
She/he can rectify
the situation.
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IF PASSWORD IS ENTERED WRONG 3
TIMES
TEMPARATURE RISES BEYOND
LIMIT
IF INTRUSION
TROUGH WINDOW
ARDUINO GSM MODEM
USER
4.3) DIFFERENT DESIGN OPTIONS
Same project could have been designed with:
1) 8051
2) ARDUINO
We are using ATmega 328 to realize this project because:
Using an Arduino simplifies the amount of hardware and software development you need
to do in order to get a system running.
The Arduino hardware platform already has the power and reset circuitry setup as well as
circuitry to program and communicate with the microcontroller over USB. In addition,
the I/O pins of the microcontroller are typically already fed out to sockets/headers for
easy access (This may vary a bit with the specific model).
On the software side, Arduino provides a number of libraries to make programming the
microcontroller easier. More useful are things such as being able to set I/O pins to PWM
at a certain duty cycle using a single command or doing Serial communication.
The greatest advantage is having the hardware platform set up already, especially the fact
that it allows programming and serial communication over USB.
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4.4) PROPOSED FLOW MODEL
Figure 7: PROPOSED FLOW MODEL
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4.5) CIRCUIT DIAGRAM
ATMEGA 328
Figure 8: CIRCUIT DIAGRAM
XXXII
0 TX 14
1 RX 15
2 16
3 17
4 18
5 19
6 20
7 21
8 22
9 23
10 24
11 25
12 26
13 27
KEYPAD
SENSOR MODULE
SENSOR MODULE
SENSOR MODULE
GSM Modem
SENSOR MODULE
POWER SUPPLY
TEMP. SENSOR (LM35)
DRIVER IC L293D
5V 0V 12V
DVD TRAY
LED
4.6) ASSEMBLY OF HARDWARE AND COMPONENTS
Built a wooden house with one window and door.
DVD tray is incorporated and works as door.
A keypad is designed and connected outside the door on the base and is
used to enter password.
The output of the keypad is given to the arduino which is then compared
with the actual password.
If the password entered is correct then the red led glows else the green led
glows.
If the password entered is incorrect thrice then a message is sent to the
authorized person.
The output of the temperature sensor is given to the arduino. If the
temperature rises beyond 55C then a message is sent the authorized person.
4 pairs of Transmitting end (led) and receiving end (photodiode) are
connected at the windows.
Outputs of the IR sensor are connected to the arduino through LM324.
If the output is 0 on all the 4 pins of arduino where the sensors are
connected then a message is sent to the authorized person.
With arduino, GSM modem is connected in which SIM card is inserted.
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4.7) FLOWCHART
5.
XXXIV
START
IF S(0), S(1)=0
IF TEMP>35
IF CORRECT P/W
P/W CHECKED
AGAIN
P/W CHECKED AGAIN
IFS(2), S(3)=0
MESSAGE SENT
WRONG PASSWORD ENTERED IN KEYPAD
DVD TRAY OPENS
END
END
END
CHAPTER 5
TESTING AND DEPLOYMENT
5.1) VERIFICATION
GSM MODEM
AT Command Set:
ATE0 – Echo off
ATE1 – Echo on
ATD – call to dial a number
Syntax: ATD 9885622502;
ATDL – redial last telephone number
ATA – answer an incoming call
ATH – Disconnect existing connection
AT+CMGD – to delete SMS
Syntax: AT+CMGD=1 -> deletes ‘1’ sms in sim card
AT+CMGR – to read SMS
Syntax: AT+CMGR=1 -> reads 1st sms in sim card
AT+CMGS – to send SMS
Syntax: AT+CMGS= 9885622502 press enter
Type text and press ctrl+z
We used the above mentioned command sets to verify the working of gsm
modem.
XXXV
IR SENSORS
IR Sensors would detect the intrusion if the person is entering window from outside to
inside only and not when, person going out from inside to outside.
For its verification, we inserted an object from outside the window to inside and a
message was received on the authorized number.
While the same object was made to pass through the window from inside, no message
was sent by arduino.
KEYPAD
We set the password to “1234”.
When we entered the correct password then DVD tray acting as door opened.
When we entered the wrong password for consecutively 3 times, a message was sent by
arduino.
5.2) VALIDATION
The various components used in designing of the model was verified with help of the
verification process we took out. These components include:
KEYPAD
IR Sensors
GSM Modem
ARDUINO (During the verification of Hexpad, IR sensors, GSM Modem)
LM324 (During the verification of IR Sensors)
DVD tray (During the Keypad verification)
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CHAPTER 6
CONCLUSION AND FUTURE ENHANCEMENTS
6.1) FUTURE SCOPE
The future implications of the project are very great considering the amount of time and
resources it saves.
The project we have undertaken can be used as a reference or as a base for realizing a
scheme to be implemented in other projects of greater level such as weather forecasting,
temperature updates, device synchronization, etc.
The project itself can be modified to achieve a complete Home security System which
will then create a platform for the user to interface between himself and his household.
6.2) CRITICAL APPRAISAL OF WORK DONE
Today, with advancement in science and technology, home automation has become one
of the fastest developing application-based technologies in the world. The idea of
comfortable living in home has since changed for the past decade as digital, vision and
wireless technologies are integrated into it. Intelligent homes, in simple terms, can be
described as homes that are fully automated in terms of carrying out a predetermined
task, providing feedback to the users, and responding accordingly to situations. In other
words, it simply allows many aspects of the home system such as temperature and
lighting control, network and communications, entertainment system, emergency
response and security monitoring systems to be automated and controlled, both near and
at a distance.
Automated security systems play an important role of providing an extra layer of security
through user authentication to prevent break-ins at entry points and also to track illegal
intrusions or unsolicited activities within the vicinity of the home (indoors and outdoors).
There has been much research done in the design of various types of automated security
systems. Sensor-based systems that rely on contact or movement sensors or contact-based
systems such as fingerprint and palm print scan or keypad activation that require
substantial amount of contact with an input device.
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Many security systems are based on only a single system. In an event of system failure or
intrusion of the user authentication, there is no backup system to monitor the home
continually. This shortcoming can be dealt with using multiple security systems (ormulti-
layered security systems). However, multi-system implementations will definitely be
more demanding in terms of computational cost and organization.
6.3) CONCLUSION
The project we have undertaken has helped us gain a better perspective on various
aspects related to our course of study as well as practical knowledge of electronic
equipment and communication. We became familiar with software analysis, designing,
implementation, testing and maintenance concerned with our project.
The extensive capabilities of this system are what make it so interesting. From the
convenience of a simple cell phone, a user is able to control and monitor virtually any
electrical devices. This makes it possible for users to rest assured that their belongings are
secure and that the television and other electrical appliances was not left running when
they left the house to just list a few of the many uses of this system.
The end product will have a simplistic design making it easy for users to interact with.
This will be essential because of the wide range of technical knowledge that homeowners
have.
XXXVIII
REFERENCES:
www.arduino.cc
www.wikipedia.com
www.youtube.com
www.instructables.com
www.seminarprojects.com
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