DESIGN AND CONSTRUCTION OF AN AUTOMATIC BATHROOM LIGHT
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ABSTRACT
This project is on design and construction of an automatic bathroom light. The system automatically turns ON bathroom light when the bathroom door is opened, and remains lit in the occupied state. When the door is opened again the lamp turns off after a very short delay. This automatic circuit saves energy and greatly assists your visitors, especially at night. The “single-chip” circuit, built around the popular decade counter CD4017 (IC1), is very compact, and can be powered from any 5VDC/500mA mobile phone travel charger/similar smps adaptor. After construction, try to enclose the whole circuit in a suitable plastic case for total convenience. Next, arrange the door switch (S1) such that when the door is closed it should be in closed state.
TABLE OF CONTENTS
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
TABLE OF CONTENT
CHAPTER ONE
INTRODUCTION
1.1 BACKGROUND OF THE PROJECT
1.2 OBJECTIVE OF THE PROJECT
1.3 SCOPE OF THE PROJECT
1.4 SIGNIFICANCE OF THE PROJECT
1.5 LIMITATION OF THE PROJECT
1.6 APPLICATION OF THE PROJECT
1.7 PROJECT ORGANISATION
CHAPTER TWO
2.0 LITERATURE REVIEW
2.1 OVERVIEW OF 555 TIMER IC
2.2 HISTORICAL BACKGROUND OF 555 TIMER
2.3 DESIGN OF 555 TIMERS
2.4 PIN DIAGRAM OF 555 TIMERS
2.5 DESCRIPTION OF MAJOR COMPONENTS USED
CHAPTER THREE
3.0 CONSTRUCTION
3.1 BASIC DESIGNS OF THE SYSTEM
3.2 BLOCK DIAGRAM OF THE SYSTEM
3.3 DESCRIPTION OF THE BLOCK UNIT
3.4 SYSTEM CIRCUIT DIAGRAM
3.5 CIRCUIT OPERATION
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
5.1 CONCLUSION
5.2 RECOMMENDATION
5.3 REFERENCES
CHAPTER ONE
1.0 INTRODUCTION
Lighting control system is an intelligent network based lighting control solution that incorporates communication between various system inputs and outputs related to lighting control with the use of one or more central computing devices. Lighting control systems are widely used on both indoor and outdoor lighting of commercial, industrial, and residential spaces. Lighting control systems serve to provide the right amount of light where and when it is needed. Lighting control systems are employed to maximize the energy savings from the lighting system, satisfy building codes, and energy conservation programs. Lighting control
The controlling of bathroom lights is usually done by the occupant of the house or the user of bathroom. This is not only precarious but also sometimes results in wastage of power because of the negligence or unusual circumstances on part of the user in operating the lights ON and OFF. Apart from solving the problem of negligence, this device will solve the problem of electric shock when the user of the bathroom might use wet hand to ON or OFF the bathroom light.
However, this circuit solves the problem of electricity wastage and electric shock by switching off the lamp automatically after 30 minutes once it is switched on. The back-up LED lamp provided in the circuit turns on for three minutes when mains fails. This is helpful especially when you are taking a shower at night.
1.1 OBJECTIVE OF THE PROJECT
The objective of this work is to design a device that will switch ON and OFF the bathroom light and it remains on unnoticed for long periods.
1.2 SCOPE OF THE PROJECT
This work automatically turns On the lights when a person enters the washroom and it automatically turns it Off when he leaves it. This circuit is also designed to consume lesser power so that the circuit can be used in any household or public washrooms without worrying about the power bills.
In this circuit, we use reed switch which is used to detect the opening and closing of the door. A reed switch electrically is just a relay kind of component but unlike a relay which activates when a coil voltage is supplied, the reed switch activates when a magnetic field is detected in the vicinity.
1.3 SIGNIFICANCE OF THE PROJECT
This system is simple and low cost automatic bathroom light circuit. The light automatically turns on when the bathroom door is opened, and remains lit in the occupied state. When the door is opened again the lamp turns off after a very short delay. This automatic circuit saves energy and greatly assists your visitors, especially at night.
1.4 LIMITATION OF THE PROJECT
One of the problems of this device is that any anything can trigger the device, such as breeze, movement of animals inside the bathroom can trigger the system.
1.5 APPLICATIONS OF THE PROJECT
Apart from using this device as a bathroom lighting system, this device can be used for other purposes such as:
- Useful for automatic outdoor lighting or garden lighting at home.
- Useful for automatic switching of street lights.
- Useful for switching the hoardings on and off automatically.
- Useful for self-switching operation of displaying title hoardings of companies.
1.6 PROJECT 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 an automatic bathroom light with backup lamp. In this chapter, the background, significance, objective limitation and problem of an automatic bathroom light with backup lamp were discussed.
Chapter two is on literature review of an automatic bathroom light with backup lamp. 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.
