The Design And Construction Of A Power Resumption Alarm (PDF/DOC)
ABSTRACT
Power supply and failure is a frequent experience that occurs in our mains. Power restoration is a period of time when the electricity supply to a particular building or area is restored, because of replacement or servicing damage to the cables or any other reason.
For us to be notified when the power ON condition has occurred a power monitoring device is used. This system indicates when there is power resumption in our mains through alarm indication. As soon as the system experiences power resumption you will receive a signal from an alarm.
TABLE OF CONTENT
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
CHAPTER ONE
INTRODUCTION
1.1 BACKGROUND OF THE PROJECT
1.2 PROBLEM STATEMENT
1.3 OBJECTIVE OF THE PROJECT
1.4 PURPOSE OF THE PROJECT
1.5 SIGNIFICANCE OF THE PROJECT
1.6 CONSEQUENCES OF A POWER FAILURE
1.7 APPLICATION OF THE PROJECT
1.8 SCOPE OF THE PROJECT
1.9 METHODOLOGY
1.10 PROJECT WORK ORGANIZATION
CHAPTER TWO
LITERATURE REVIEW
2.1 REVIEW OF ELECTRICAL POWER SUPPLY
2.2 HISTORY ELECTRIC POWER SYSTEM
2.3 HISTORY OF POWER FAILURE AND SYSTEM RELIABILITY
2.4 TYPES OF POWER FAILURE SIGNAL
2.5 TYPES OF POWER FAILURE
2.6 PROTECTING THE POWER SYSTEM FROM FAILURE
2.7 RESTORING POWER AFTER A WIDE-AREA OUTAGE
CHAPTER THREE
CONSTRUCTION
3.1 DESCRIPTION OF THE SYSTEM BUILDING BLOCKS
3.3 CIRCUIT DIAGRAM
3.4 OPERATION PRINCIPLE OF THE SYSTEM
3.4 CIRCUIT DESCRIPTION
3.5 COMPONENT LIST
3.6 COMPLETE CIRCUIT DIAGRAM OF THE SYSTEM
3.7 DESCRIPTION OF MAJOR COMPONENTS USED
CHAPTER FOUR
4.0 TEST AND RESULT ANALYSIS
4.1 CONSTRUCTION PROCEDURE AND TESTING ANALYSIS
4.2 CASING AND PACKAGING
4.3 ASSEMBLING OF SECTIONS
4.4 TESTING OF SYSTEM OPERATION
4.5 INSTALLATION OF THE COMPLETED DESIGN
4.6 PROBLEM ENCOUNTERED
CHAPTER FIVE
5.1 CONCLUSION
5.2 RECOMMENDATION
5.3 REFERENCES
CHAPTERONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE STUDY
In modern society, it is impossible to imagine life without electricity. Modern equipment requires a continuous supply of electricity. Not only industry, but also in the household. Take the case of an ordinary refrigerator. If you experience a power off situation, your food will be spoilt. But much more important, what if the power failure “spoils” your business. For example, uninterrupted power supply is needed for your server, which manages your accounting programme or provides uninterrupted operation of your website [1].
Of course, in most critical applications, uninterruptible power supplies (UPS) are used, but this is not always the case. Also, these devices cannot provide continuous operation in the event of remote power off. Often you need to take other action according to the situation. But how do you know that the remote site has experienced a power off condition?[1]
For us to be notified when the power ON condition has occurred a power monitoring device is used. This system indicates when there is resumption in our mains through alarm indication. As soon as the system experiences power resumption you will receive a signal from an alarm [1][2].
1.2 PROBLEM STATEMENT
Power failure in homes, offices and workplaces can be irritating, frustrating and devastating, affect our appliances and at the same time affect the happiness of the occupant. It is quite unfortunate that sometimes when power is restored the occupant will not be aware most especially when there is noise and no lighting indicator. In other to overcome this problem, this device was designed. This device is designed to inform you when the power is restored in order to switch off their alternative power supply.
1.3 OBJECTIVE OF THE PROJECT
The objective of the project is to design a power failure monitoring device that will trigger a buzzer when the mains supply is restored. Once the buzzer blows it also indicate that the mains have been restored.
1.4 PURPOSE OF THE PROJECT
The purpose of this work is to build a power monitoring device that monitor power resumption.
This device is designed to inform you when the power is restored in order to switch off their alternative power supply.
1.5 SIGNIFICANCE OF THE PROJECT
Power restoration alarm notifies you by alarm when your electrical equipment suffers a power supply. If you have important equipment you want to run with mains and want to know if there has been a power supply so that you power the device, this app can help you by telling you when electric power is supplied [2].
1.6 CONSEQUENCES OF A POWER FAILURE
- No lights in the house
- Loss of refrigeration – food spoils
- No heat or air conditioning
- No flushing toilets or running water
- Can’t cook on electric range or in microwave oven
1.7 APPLCATION OF THE PROJECT
Typical uses of power failure and resumption signal include monitoring [2][3]:
* fridges/freezers;
* fish tanks/aquariums;
* sump pumps;
* computer equipment;
* heating systems;
* chemical storage;
* and many other applications.
1.8 SCOPE OF THE PROJECT
This project is a power supply monitoring device that will trigger a buzzer when the mains supply is resumed. At the same time, the light emitting diode will be turned ON. Once the buzzer sound, one will know that there is resumption of mains supply [3].
1.9 METHODOLOGY
To achieve the aim and objectives of this work, the following are the steps involved:
- Study of the previous work on the project so as to improve it efficiency.
- Draw a block diagram.
- Test for continuity of components and devices,
- Design of the alarm was carried out.
- Studying of various component used in circuit.
- Construct the circuit.
- Finally, the whole device was cased and final test was carried out.
1.10 PROJECT WORK ORGANISATION
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 the study. In this chapter, the background, significance, objective limitation and problem of the study were discussed.
Chapter two is on literature review of this study. 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.
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