Description
ABSTRACT
T-junction traffic light controller is such a device that will play a significant role in controlling traffic at junctions, to ease the expected increased rush at such junctions and reduce to minimum disorderliness that may arise, as well as allowing the pedestrians a right of the way at intervals rather than being struck down when in a hurry to cross the roads. Such an electrical system with a touch of electronics that control the flow of traffic in a pre-determined sequential pattern at a junction, has its diagram comprising of different components. The power supply unit provides the control unit with specified voltage from primary source. The pulse generator consisting of a timer generates pulse for the system. The clock or counter moderates the signal that enters the decoding logic system. The display unit of each stand consists of led, the first is red in colour, the second is amber in colour and the last is green in colour.
INTRODUCTION
The traffic on our roads, especially intra-city traffic due to increasing number of cars grow by the day and unless adequate steps are taken to control the situation, we shall soon meet with circumstances we do not bargain for. That the innumerable traffic junctions in the country by far out-number the staff strength of the traffic wardens available and that the traffic wardens even where they are enough to control all the junctions cannot do so throughout the day is not in doubt. Traffic control at T.junctions or elsewhere ensures orderliness of movements of vehicles, goods and
pedestrians while its absence strongly indicates chaos and most at times leads to accidents. In the light of the above, it is imperative to recognize the need to compliment the physical exhausting efforts of the traffic wardens. In doing so, steps to be taken should assume permanence in nature rather than any ad-hoc exercise. Such is the role expected to be played by an installed operational road junction traffic controller.
TABLE OF CONTENTS
Title Page
Certification
Dedication
Acknowledgement
Abstract
Table of Contents
List of Figures
CHAPTER ONE
INTRODUCTION
1.1 Background of the Study
1.2 Objective of the Project
1.3 Scope of the Study
1.4 Project Report Organization
CHAPTER TWO
LITERATURE REVIEW
2.1 Introduction
2.2 Pre-Emption And Priority
2.3 Special Provisions
2.4 Technology
2.5 Control And Co-Ordination
2.6 Design Layout And Operation Site
CHAPTER THREE
DESCRIPTION OF SYSTEMS
3.1 The Power Supply
3.2 The Voltage Regulator
3.3 Crystal Oscillator
3.4 Paper Capacitor
3.5 The Microcontroller
3.6 System Flow Diagram
3.7 Light Indicator Stage
3.8 Transistors
3.9 Resistors
3.10 Bridge Rectifier
3.11 Electrolytic Capacitor
3.12 Step Down Transformer
3.13 Seven Segment Display
CHAPTER FOUR
SYSTEMS OPERATIONAL UNITS
4.1 The Control Unit
4.2 System Analysis
4.3 Choice Of Counter
4.4 The Interface Unit
4.5 Test And Result
4.6 Observation
4.7 Packaging
4.8 Bill Of Engineering Measurement And Evaluation
CHAPTER FIVE
CONCLUSION AND RECOMMENDATIONS
5.1 Conclusion
5.2 Recommendations
5.3 Suggestions For Further Research
References