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DESIGN AND CONSTRUCTION OF PASSWORD HOME SECURITY SYSTEM

Authors: Enoch Ochuwa | Engineering Electrical Electronics Engineering Research 44 pages 8,880 words

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  • ABSTRACTThe necessity of a low cost electronic home security system designed in co-ordination with othersecurity measures is always there in our society to reduce the risk of home intrusion. Keepingthis problem in mind, we are working on a project on automatic password based door locksystem. We want to utilize the electronic technology to build an integrated and fully customizedhome 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 thesecurity level to prevent an unauthorized unlocking. In case the user forgets the combination ofpassword this system give the flexibility to the user to change or reset the password. Thisautomatic password based lock system will give user more secure yet cost-efficient way oflocking-unlocking system.Firstly the user combination will be compared with prerecorded password stored in the systemmemory. Our system will allow the user to go for certain number of wrong combinations beforethe system will be temporarily disabled. But if user combination matches with the password, thedoor 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 CONTENTCERTIFICATIONDEDICATIONv
  • ACKNOWLEGDEMENTABSTRACTTABLE OF CONTENTLIST OF FIGURESLIST OF TABLESCHAPTER ONE INTRODUCTION1.1 Preamble1.2Aim1.3Scope of Project1.4 History1.5 Objective1.6 Project ApplicationsCHAPTER TWOLITERATURE REVIEW2.1Background2.2 Improvement on Existing Works2.2.1 Volumes2.2.2 Embedded design2.2.3 Programs2.3Code Lock2.4Operational Amplifier (OP Amps) and Comparator2.4.1Characteristics of Ideal Operational Amplifiervi
  • 2.5Transistor2.6Passive ComponentsCHAPTER THREEMETHODOLOGY3.1Introduction3.2 The Main Component of the Project 3.3 Power Supply Unit3.4 LM78xx Series Voltage Regulato3.5Design and Construction3.51Results and Analysis3.52Block Diagram Description 3.5.3 Microcontroller 3.5.4 Relay 3.5.5 AT93C46 IC 3.56Functional Description 4.0CHAPTER FOUR4.1 System Design, Development and Implementation4.1 Introduction 4.2 The Block Diagram of the Project 4.3 The Function of the Flow Chart Diagram 4.4 Softwarevii
  • 5.0CHAPTER FIVE 5.1Results and Discussion5.2Conclusion and Recommendation5.3Future Development Glossary REFERENCEAppendix AProgramme Code for the MicrocontrollerAppendix B Machine Code for the Microcontrollerviii
  • LIST OF FIGURESFIGURE TITLE PAGE Figure 2.1 : Block Diagram Relating the Memory and Port Figure 2.2: Op Amp/Comparator Schematic RepresentationFigure 2.3 Passive ComponentsFigure 3.1: Password Based Door Locking System Circuit Diagram using 8051Figure 3.2 Bridge rectifier 20 Figure 3.3Basic diagram of power supply unitFigure 3.4 Main block diagram of the systemFigure 3.5 LCD ( Liquid Crystal Display)Figure 3.6Block diagram of microcontrollerFigure 3.7Circuit diagram of PICFigure 3.8 The flow chartix
  • LIST OF TABLESTABLE TITLE PAGE 3.1 Function of microcontroller port 3 Pins3.2 Function of various pins interface3.3 Function of AT93C46 IC Pins 5.1 Cost breakdown Code

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