This project is titled the design and construction of a liquid level sensor and alarm system. It is designed to indicate the level of liquid such as water in an over-head tank. It not only indicates the amount of water present in the overhead tank but also gives an alarm when the tank is full.
When the liquid is empty the wires in the tank are open circuited and the 180K resistors pulls the switch low hence opening the switch and LEDs are OFF. As the water starts filling up, first the wire in the tank connected to S1 and the + supply are shorted by water. This closes the switch S1 and turns the LED1 ON. As the water continues to fill the tank, the LEDs2 , 3 and 4 light up gradually.
When the liquid is full, the base of the transistor BC148 is pulled high by the liquid and this saturates the transistor, turning the buzzer ON. The SPST switch has to be opened to turn the buzzer OFF.
TABLE OF CONTENT
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
TABLE OF CONTENT
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE STUDY
1.2 PROBLEM STATEMENT
1.3 AIM / OBJECTIVE OF THE STUDY
1.4 SIGNIFICANCE OF THE PROJECT
1.5 SCOPE OF THE PROJECT
CHAPTER TWO
2.0 LITERATURE REVIEW
2.1 REVIEW OF RELATED THEORIES
2.2 REVIEW OF RELATED STUDIES
2.3 RESEARCH GAP
2.4 CONCLUSION
CHAPTER THREE
3.0 CONSTRUCTIONS
3.1 CIRCUIT DIAGRAM
3.2 CIRCUIT DESCRIPTION
3.3 CIRCUIT OPERATION
3.4 COMPONENTS USED
3.5 THE WORKING PRINCIPLE
3.5 POWER SUPPLY UNIT
3.6 POWER SUPPLY UNIT
3.7 SPECIFICATION AND OPERATION OF SYSTEM COMPONENT
CHAPTER FOUR
4.0 CONSTRUCTIONS
CIRCUIT OPERATION
CIRCUIT DIAGRAM
COMPONENTS REQUIREMENT
WORKING OF AUTOMATIC WATER LEVEL CONTROLLER
COMPONENTS PIN-OUT
POWER SUPPLY UNIT
POWER SUPPLY COMPONENTS5.1 INSTALLATION OF THE COMPLETE DESIGN
CONSTRUCTION PROCEDURE AND TESTING
CASING AND PACKAGING
ASSEMBLING OF SECTION
TESTING OF SYSTEM OPERATION
PROBLEMS ENCOUNTERED
COST ANALYSIS
DESCRIPTION OF COMPONENTS USED
CHAPTER SIX
5.1 CONCLUSION
5.2 RECOMMENDATION
REFERENCES
Design And Construction Of An Automatic Liquid Level Indicator With Alarm. (n.d.). UniTopics. https://www.unitopics.com/project/material/design-and-construction-of-an-automatic-liquid-level-indicator-with-alarm/
“Design And Construction Of An Automatic Liquid Level Indicator With Alarm.” UniTopics, https://www.unitopics.com/project/material/design-and-construction-of-an-automatic-liquid-level-indicator-with-alarm/. Accessed 22 November 2024.
“Design And Construction Of An Automatic Liquid Level Indicator With Alarm.” UniTopics, Accessed November 22, 2024. https://www.unitopics.com/project/material/design-and-construction-of-an-automatic-liquid-level-indicator-with-alarm/
Here’s a typical structure for Design And Construction Of An Automatic Liquid Level Indicator With Alarm research projects:
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