Overview Of A Microcontroller Based Automatic Bell

ABSTRACT

The world over the decades has made considerable advancement in automation; automation is employed in homes, industries, commercial and educational sectors. In this work, a microcontroller-based automatic school bell is designed. This circuit uses a programmed microcontroller chip to schedule the school teaching and break periods so that for every start or end of a period a bell is automatically rang. This design finds a tremendous use at primary and secondary school levels where the teaching sections can span over eight periods including breaks. The advantage here is that the bell rings at the start of each period without any human intervention to a great degree of accuracy. The time schedule results are compared with that obtained with a clock, however, some drift is noticed, which is negligible.

TABLE OF CONTENTS

TITLE PAGE

APPROVAL PAGE

DEDICATION

ACKNOWLEDGEMENT

ABSTRACT

TABLE OF CONTENT

CHAPTER ONE

1.0     INTRODUCTION

1.1     OBJECTIVE OF THE PROJECT

1.2     SIGNIFICANCE OF THE PROJECT

1.3     LIMITATION OF THE PROJECT

1.4     APPLICATION OF THE PROJECT

1.5     PROJECT ORGANIZATION

CHAPTER TWO

2.0     LITERATURE REVIEW

2.1     REVIEW OF DOORBELL

2.2   HISTORICAL BACKGROUND OF THE PROJECT

CHAPTER THREE

3.0     CONSTRUCTION

3.1     SYSTEM BLOCK DIAGRAM

3.2     SYSTEM OPERATION

3.3     CIRCUIT DESCRIPTION

3.4     PROJECT CODE

3.5     DESCRIPTION OF COMPONENTS USED

CHAPTER FOUR

RESULT ANALYSIS

4.0     CONSTRUCTION PROCEDURE AND TESTING

4.1     CASING AND PACKAGING

4.2     ASSEMBLING OF SECTIONS

4.3     TESTING OF SYSTEM OPERATION

4.4      COST ANALYSIS

CHAPTER FIVE

5.0     CONCLUSION

5.1     RECOMMENDATION

5.2     REFERENCES

 CHAPTER ONE

1.1                                          INTRODUCTION

A bell is a percussion instrument used in schools that tells the students when it is time to go to class in the morning and when it is time to change classes during the day. Typically, the first bell tells the students that it is time to report to class. The bell is an important instrument in both primary and secondary schools and even in the industries and other businesses where the bell timer plays a critical role in running the day. Bells are also associated with clocks indicating the hour by ringing. Clock towers or bell towers can be heard over long distances which were especially important in the time when clocks were too expensive for widespread use. The bell shape is usually an open-ended hollow drum which resonates upon being struck.

Bells were known in China before 2000 BC and in Egypt, India, Greece, Rome, and other ancient cultures. From earliest times, they were used as signaling devices, as ritual objects, and as magical, often protective, amulets (often hung in doorways or around the necks of animals). The use of bells in churches spread through Europe from the 6^th to 11^th centuries and were first used in Eastern Christian

1.2                              OBJECTIVE OF THE PROJECT

The objective of this electronic bell is to design a device that will provide a cheap and continent means of communication between two or more people in the same premises. In electric bell, the signal is transmitted by the call indicator system is to
1.3                              SIGNIFICANCE OF THE PROJECT

Automatic bell Provide a cheap and continent means of communication between two or more people in the same premises. It can also be used in offices or industries as a mean alerting of someone.

An automatic bell system reduces the effort needed to turn on or off an electric bell manually that gives alarm for certain intervals of time based on timings. This automatic system is a microcontroller based project that uses a simple basic pic microcontroller, which makes this product affordable.

1.4                                LIMITATION OF THE PROJECT

This project operates with power supply, which means that the system will stop working whenever mains power supply fails.

1.5                              APPLICATION OF THE PROJECT

This device can be used in the following places, such as:

1. church
2. schools
3. markets
4. and any other public places to remind the public about a particular time

1.6                          PROJECT WORK ORGANIZATION

The various stages involved in the development of this project have been properly put into five chapters to enhance comprehensive and concise reading. In this project thesis, the project is organized sequentially as follows:

Chapter one of this work is on the introduction to electronics bell. In this chapter, the background, significance, objective limitation and problem of electronics bell box were discussed.

Chapter two is on literature review of an electronics bell. In this chapter, all the literature pertaining to this work was reviewed.

Chapter three is on design methodology. In this chapter all the method involved during the design and construction were discussed.

Chapter four is on testing analysis. All testing that result accurate functionality was analyzed.

Chapter five is on conclusion, recommendation and references.