Design and Implementation of Password Based Access Control With Intruder Alert System
Chapter One
Aim and objectives
This project aims to design and construct a digital password-based locking system that is used in different places for door authentication and other form of locking systems.
Objectives include:
- To design and create a password door-locking system
- To implement and show how to design a password-looking system
- To show stages involved in the design and implementation of a password-based system.
CHAPTER TWO:
LITERATURE REVIEW
Origin of the project
An electronic lock (or electric lock) is a locking device which operates by means of electric current. Electric locks are sometimes stand-alone with an electronic control assembly mounted directly to the lock. Electric locks may be connected to an access control system, the advantages of which include: key control, where keys can be added and removed without re-keying the lock cylinder; fine access control, where time and place are factors; and transaction logging, where activity is recorded. Electronic locks can also be remotely monitored and controlled, both to lock and unlock.
Operation
Electric locks use magnets, solenoids, or motors to actuate the lock by either supplying or removing power. Operating the lock can be as simple as using a switch, for example an apartment intercom door release, or as complex as a biometric based access control system.
Types of digital lock
Electromagnetic lock
The most basic type of electronic lock is a magnetic lock (commonly called a “mag lock”). A large electro-magnet is mounted on the door frame and a corresponding armature is mounted on the door. When the magnet is powered and the door is closed, the armature is held fast to the magnet. Mag locks are simple to install and are very attack-resistant.
CHAPTER THREE:
DESIGN METHODOLOGY
Project specification
This is the design and construction of a password access control system which makes use of password to open and close a door when the write button is pressed.
Concept review
When this design is powered the door closes and locks if open but if not open locks and from the control unit you will see the buttons which the security password is only known by the user, when you press the buttons with the write number coming first, then the right number is placed at the memory of the microcontroller, then the enter button is pressed, the microcontroller will now compare the entered numbers with the stored if it is the same the door will rotate and open and close but if not equal it will trigger the alarm unit and beep for like 5mins and tighten the door and stop the alarm.
This system can be applied in different areas like in cars doors, home door lock, and in banks etc.
CHAPTER FOUR:
DESIGN IMPLEMENTATION AND TESTING
Project resource centers
This includes:
- internet resource centers
- experimental aids and observation
- Teachers and lectures
- And digital electronics by J.K Mehta
CHAPTER FIVE:
RECOMMENDATION AND CONCLUSION
Summary
This section of this project report forms the concluding part of the write up and takes a look at some of the problems encountered during the progressive job on the system and also brings in suggestions for further improvement and/or enhancement for the system design.
The design and development of this project has really been challenging, as I have been faced with choices far beyond what I expected. But in the long run the result paid off.
After the complete design of the system, the deviation between the expected result and the actual result was very close. The performance and efficiency was beyond expectation and from every ramification, the design of the project was a success.
Problem encounter
During the course of the design of this system, there were series of problems which came in the way of achieving the design goals of this project, most of them where over come via share troubleshooting, in some cases some parts require redesigning and the software debugging also created a bit of a problem.
One major setback of this project is the availability of components required to build the hardware of the system. In most cases I had to look through electrical catalogs to obtain replacements of some of the components which are not available in the market.
After developing the software for the microcontroller, it was very difficult to find a firm/individual to help program the chip (burning the embedded software on to the chip). This posed serious problem as it brought about delay in the design time and it was also costly, this also affected the overall cost of the system.
The final packaging of the design was also another trouble, as this actually caused problems on the circuit board. Such problems include partial contact within the circuit board, between components and also with the wiring. This was actually one of the most challenging aspects of the circuit implementation phase. Due to this fact, there was a lot of soldering and de-soldering to ensure that the circuit was well implemented.
Suggestion for further design
It will be more appreciated if the system is designed to a password in cooperated system so to help reduce stress if the system finger type malfunction
Recommendation
- Avoid water spillage onto of the design.
- Supply the necessary voltage to the system by plugin its power mains to 200v to 230v ac.
- Ensure proper placement before running the design.
Conclusion
Going through the planning, flow process, design and software implementation the system had really been a tough one; but on the whole it has been a chance to show case a little bit of craftsmanship.
Reference
- Belone Schilling, Electronic Circuits: Discrete and Integrated, McGraw-Hill, New York,1979.
- B.L Theraja and A.K Theraja, A Textbook on Electrical Technology, 2003, 23rd Edition, Pp 1887 – Pp 1888.
- Paul Horowitz and Windfield Hill, The Art of Electronics, 1989, 2nd Edition, Pp 7- Pp 8, Pp 55 – Pp 58, Pp 614 –Pp 622.
- Atmel Corporation Data Sheet on AT89C51, 0285D-B-12/97
- NTE Electronics Inc., ECG Data Book, January 2002, 10th Edition.
- Giorgio Rizzoni, Principles of Electrical Engineering, 2003, 3rd Edition,
- Ronald .J Tocci, Digital Systems, Arentice – Hall. Inc. USA, 1988.
- Mark Burgess, C programming tutorial, (K & R version 4).
