DESIGN AND CONSTRUCTION OF PASSWORD HOME SECURITY SYSTEM

ABSTRACT
The necessity of a low cost electronic home security system designed in co-ordination with other
security measures is always there in our society to reduce the risk of home intrusion. Keeping
this problem in mind, we are working on a project on automatic password based door lock
system. We want to utilize the electronic technology to build an integrated and fully customized
home security system at a reasonable cost. We hope this project will be useful in keeping thieves,
dacoits and other sort of dangers at bay.
By using this system we can unlock the door by using pre-decided password, increase the
security level to prevent an unauthorized unlocking. In case the user forgets the combination of
password this system give the flexibility to the user to change or reset the password. This
automatic password based lock system will give user more secure yet cost-efficient way of
locking-unlocking system.
Firstly the user combination will be compared with prerecorded password stored in the system
memory. Our system will allow the user to go for certain number of wrong combinations before
the system will be temporarily disabled. But if user combination matches with the password, the
door will be unlocked. The same password can be used to lock the door. This system will give
the user an option to reset his own password if he wants.
TABLE OF CONTENT
CERTIFICATION
DEDICATION
v
ACKNOWLEGDEMENT
ABSTRACT
TABLE OF CONTENT
LIST OF FIGURES
LIST OF TABLES
CHAPTER ONE
INTRODUCTION
1.1 Preamble
1.2 Aim
1.3 Scope of Project
1.4 History
1.5 Objective
1.6 Project Applications
CHAPTER TWO
LITERATURE REVIEW
2.1 Background
2.2 Improvement on Existing Works
2.2.1 Volumes
2.2.2 Embedded design
2.2.3 Programs
2.3 Code Lock
2.4 Operational Amplifier (OP Amps) and Comparator
2.4.1 Characteristics of Ideal Operational Amplifier
vi
2.5 Transistor
2.6 Passive Components
CHAPTER THREE
METHODOLOGY
3.1 Introduction
3.2 The Main Component of the Project
3.3 Power Supply Unit
3.4 LM78xx Series Voltage Regulato
3.5 Design and Construction
3.51 Results and Analysis
3.52 Block Diagram Description
3.5.3 Microcontroller
3.5.4 Relay
3.5.5 AT93C46 IC
3.56 Functional Description
4.0 CHAPTER FOUR
4.1 System Design, Development and Implementation
4.1 Introduction
4.2 The Block Diagram of the Project
4.3 The Function of the Flow Chart Diagram
4.4 Software
vii
5.0 CHAPTER FIVE
5.1 Results and Discussion
5.2 Conclusion and Recommendation
5.3 Future Development
Glossary
REFERENCE
Appendix A
Programme Code for the Microcontroller
Appendix B
Machine Code for the Microcontroller
viii
LIST OF FIGURES
FIGURE TITLE PAGE
Figure 2.1 : Block Diagram Relating the Memory and Port
Figure 2.2: Op Amp/Comparator Schematic Representation
Figure 2.3 Passive Components
Figure 3.1: Password Based Door Locking System Circuit Diagram using 8051
Figure 3.2 Bridge rectifier 20
Figure 3.3 Basic diagram of power supply unit
Figure 3.4 Main block diagram of the system
Figure 3.5 LCD ( Liquid Crystal Display)
Figure 3.6 Block diagram of microcontroller
Figure 3.7 Circuit diagram of PIC
Figure 3.8 The flow chart
ix
LIST OF TABLES
TABLE TITLE PAGE
3.1 Function of microcontroller port 3 Pins
3.2 Function of various pins interface
3.3 Function of AT93C46 IC Pins
5.1 Cost breakdown Code

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APA

Enoch, O (2019). DESIGN AND CONSTRUCTION OF PASSWORD HOME SECURITY SYSTEM. Afribary.com: Retrieved November 25, 2020, from https://afribary.com/works/design-and-construction-of-password-homesecurity-system

MLA 8th

Ochuwa, Enoch. "DESIGN AND CONSTRUCTION OF PASSWORD HOME SECURITY SYSTEM" Afribary.com. Afribary.com, 16 Aug. 2019, https://afribary.com/works/design-and-construction-of-password-homesecurity-system . Accessed 25 Nov. 2020.

MLA7

Ochuwa, Enoch. "DESIGN AND CONSTRUCTION OF PASSWORD HOME SECURITY SYSTEM". Afribary.com, Afribary.com, 16 Aug. 2019. Web. 25 Nov. 2020. < https://afribary.com/works/design-and-construction-of-password-homesecurity-system >.

Chicago

Ochuwa, Enoch. "DESIGN AND CONSTRUCTION OF PASSWORD HOME SECURITY SYSTEM" Afribary.com (2019). Accessed November 25, 2020. https://afribary.com/works/design-and-construction-of-password-homesecurity-system

DESIGN AND CONSTRUCTION OF PASSWORD HOME SECURITY SYSTEM

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