INTELLIGENT HOME SECURITY SYSTEM

Presentation on INTELLIGENT HOME SECURITY SYSTEM

INTRODUCTION:

Considering some present problems of a building or an area in our country, we have found that providing security is one of the main concerns. So we thought about a security system which will help in providing continuous safety to us and our assets. The basic aim of this project was to investigate different ways of intruders breaking into residential areas and to adopt an appropriate security system. We can protect our family and valuables with this microcontroller based security system that will let us rest our head knowing that should anyone trying to break into our home or building, an alarm will go on and the security will be alerted immediately.

OBJECTIVES:

1. The objectives of our project are as following:
2. To provide security to the residential and commercial areas.
3. To detect intruders entering into restricted regions.
4. To make a reliable security system.
5. To make a system with minimum cost and power consumption.

POSSIBLE OUTCOMES:

1. If a person wants to enter into the secured area in a wrong manner, corresponding LED and alarm will be on. The state is not changed until the system is reset.
2. If anyone tries to break the door of a flat in the absence of the owner, the security person will be alerted through the same process.
3. The system is also capable to detect fire and there is also an IR pair in the room to detect unwanted person in the house in the absence of the owner in case the person enters through the window or in any other way.
4. There is a switch to control the two IR pairs in the house because these two pairs will be on if there is no one in the house.

OVERVIEW OF THE PROPOSAL

BLOCK DIAGRAM

CIRCUIT DIAGRAM:

SIMULATION RESULT:

ADVANTAGES:

1. Cheap cost.
2. Negligible power consumption.
3. Low maintenance cost.
4. Flexible.
5. Reliability of operation.
6. Low installation cost.
7. Minimum load variation.

LIMITATIONS:

1. Coverage range of IR transmitters used are approximately 20 feet. So there will be need of “repeaters” to cover large areas.
2. We have proposed for a reliable system as far as we could have done. But like the other security systems, it is also breakable.
3. There is a chance of false alarm in the system but the probabilities are very small.
4. There is an effect of sunlight on infrared communication between transmitter and the receiver. The system is more reliable in the absence of daylight.

FUTURE DEVELOPMENTS:

1. With proper research, the system can be made wireless.
2. We can use CCTV with the existing system in order to increase reliability.
3. We can also use flashlight and camera with proper zooming abilities.
4. By using infrared lasers, we can increase the coverage area to a greater extent.

POWER CONSUMPTION:

For our project, the required dc voltage is approximately 5v and the required current is about 0.16A. So the required power for one hour is 0.8 Wh. Power consumption in a day will be around 19.2 Wh and the power required in a month will be 576 Wh or 0.576 KWh approximately. Sometimes the circuit may vary in case of the required supply voltage but we can assume the variation as constant. We can see that the project is very low power consuming which is one of our main objectives.

CONCLUSION:

The microcontroller based home security system has been introduced. Experimental results shows that the microcontroller is a reliable instrument to control the system. The system is applicable to different sizes of areas and high controlling capability over them. The simple design of it allows minimum of maintenance work and the price performance relationship is cost effective. Despite of having some limitations, our system is more applicable in the prospective of our country.

REFERENCES:

1. http//www_ee.stanford.edu/~jmk/pubs/proc.ieee.2.97.pdf
2. http://www.datasheetcatalog.com/datasheetspdf/…/PIC16F84A.shtml.
3. http://www.chipswinner.com/DS/LM339.pdf.
4. http://www.toshiba.com/taec/components2/datasheet_sync//152/59.pdf.
5. Orcad Pspice 9.2 (simulation software).
6. MPLAB IDE v 7.41 (microcontroller programming software)
7. http://en.wikipedia.org/wiki/Light_emitting_diode
8. http://en.wikipedia.org/wiki/Crystal_oscillator
9. http//en.wikipedia.org/wiki/Transistor

Submitted by RIZWAN HAIDER CHOWDHURY & A.K.M SAIFUL ISLAM