Design And Construction Of A Remote Emergency Alarm For Unmanned Lift
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ABSTRACT
In unmanned lifts or elevators, sudden power failure cannot be detected from the remote operating room, and this can prove dangerous for the lift users. This work is on a simple remote emergency alarm circuit that sounds an alarm in the remote lift/elevator control room in the event of power failure. The circuit operates off a 6V DC battery.
If the power shutdown continues, the buzzer would keep sounding and drain the battery. To prevent the battery from draining, the buzzer is made to stop sounding after a predetermined period. As soon as power resumes, the alarm circuit disconnects from the battery and the battery starts charging from mains.
TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWELDGEMENT
ABSTRACT
CHAPTER ONE
1.0Â Â Â Â Â INTRODUCTION
1.1Â Â Â Â Â BACKGROUND OF THE PROJECT
- PURPOSE OF THE PROJECT
- AIM OF THE PROJECT
- OBJECTIVE OF THE PROJECT
- PURPOSE OF THE PROJECT
- LIMITATION OF THE PROJECT
- ADVANTAGES OF THE PROJECT
- PROBLEM OF THE PROJECT
- APPLICATION OF THE PROJECT
- RESEARCH QUESTION
- PROJECT ORGANISATION
CHAPTER TWO
LITERATURE REVIEW
- OVERVIEW OF THE STUDY
- REVIEW OF THE RELATED STUDY
CHAPTER THREE
3.0Â Â Â Â CONSTRUCTION METHODOLOGY
3.1Â Â Â Â Â BASIC OF THE SYSTEM
3.2Â Â Â Â Â BLOCK DIAGRAM OF THE SYSTEM
3.3Â Â Â Â Â SYSTEM OPERATION
3.4Â Â Â Â Â CIRCUIT DIAGRAM
3.5Â Â Â Â Â CIRCUIT DESCRIPTION
3.6Â Â Â Â DESCRIPTION OF COMPONENTS USED
3.7Â Â Â Â Â POWER SUPPLY UNIT
CHAPTER FOUR
4.0Â Â Â Â Â TESTING AND RESULTS
- CONSTRUCTION PROCEDURE AND TESTING
- INSTALLATION OF THE COMPLET DESIGN
- ASSEMBLING OF SECTIONS
- TESTING OF SYSTEM OPERATION
- COST ANALYSIS
CHAPTER FIVE
- CONCLUSION
- RECOMMENDATION
- REFERENCES
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