ABSTRACT
Despite all forms of security gadgets and locks, the rising prevalence of crime, attacks by thieves, intruders, and vandals still require the attention of researchers to provide a permanent answer to the well-being of lives and properties of individuals. To that purpose, we devised a low-cost and effective security system for buildings, cars, safes, doors, and gates, and we experimented with the use of electronic devices as locks to prevent unauthorized persons from gaining access to one’s property through the use of codes. The construction, on the other hand, took a modular approach, with the combination lock being divided into components and each item being built individually before being connected to make a complete functional system. During the construction, we carried out five tests, the first three of which were four-digit numbers, and the next two of which were five-digit numbers. Combinations (2), (4), (7), and (8) provided the correct output combination based on the results obtained. The key combinations determine the system’s overall functioning and performance. The entire system was built and tested, and everything works well.
CHAPTER ONE
INTRODUCTION
BACKGROUND OF THE STUDY
The advancement of science and technology around the world has resulted in an increase in the frequency and sophistication of crime. As a result, it is essential to protect oneself and one’s valuable possessions. Despite the adoption of mechanical locks, the crime rate has risen due to the simplicity with which these locks can be broken. As a result, different types of locks, particularly electronic locks, are required.
The goal of this project is to build a digital electronic combination lock with a keyboard positioned on the door for entering the secret code. The code unit, which uses a 9-switch (non-matrix) keyboard, was created to control a four-digit code electromagnetic door lock. The rising rate of crime, as well as attacks by thieves, intruders, vandals, and other criminals, despite the use of various security devices and locks, is the primary factor that led to the selection of this project. Materials for the circuit’s construction were sourced and assembled locally. A 4013 IC was utilized instead of a programmable IC due to cost and time constraints. Because the 4013 IC is a data latch for data storage, the data stored in it cannot be changed if the code is compromised, while the data in the programmable IC can be changed if the code is compromised.
STATEMENT OF PROBLEM
The rising rate of crime, as well as attacks by thieves, intruders, and vandals, are all factors to consider.
Despite all sorts of security gadgets and locks, researchers are still needed to provide a permanent answer to the well-being of individual lives and properties. Despite the adoption of mechanical locks, the crime rate has risen due to the simplicity with which these locks can be broken. As a result, different types of locks, particularly electronic locks, are required. To that aim, we create a low-cost, high-effective security system for buildings, cars, safes, doors, and gates that uses codes to restrict illegal access to one’s belongings.
OBJECTIVES OF THE STUDY
The following are the primary goals for commencing on this project to build a digital combination lock system:
i. Create a low-cost, high-performance security system for buildings, automobiles, safes, doors, and gates.
ii. To investigate the use of electronic gadgets as locks.
iii. To utilize codes to prevent unauthorized people from gaining access to one’s property.
iv. To raise public knowledge about the importance of security and access control.
v. To develop a working model of a digital combination lock system using the available components.
vi. To build and test the designed system to check if it can perform as expected.
specified.
SIGNIFICANCE OF THE STUDY
Only banks, few homes (approximately 1 in 200,000), and few cars (about 1 in 100) utilize digital locks, according to statistics from a physical count of existing doors in Mubi. According to a survey, the lock is not popular because it is pricey and difficult, with only a few people being able to memorize the access code. The goal of this project is to make the digital combination lock more economical, accessible, and affordable to at least 70% of the residents in Mubi Town.
SCOPE OF THE STUDY
The flip flop action is used in the creation of this digital combination lock. We develop a low-cost and effective security system for buildings, cars, safes, doors, and gates to prevent illegal access to one’s property through the use of codes; as a result, we experiment with the use of electrons.
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