Dld presentation

1. Course Title : Digital Logic Design
Course Code : CSE – 204
Batch : CSE 201
SEC : DI
Project Presentation

2.  Group C
Team Members :
1. Md. Alimul Islam Imon
201002381
2. Hasan Jahan Rakib
201002346
3. Sabrina Haque Mou
201002327
4. Asma Akter
201002331
5. Agmera Khatun
201002319
Presented By :
Md. Alimul Islam Imon (Leader)
CSE Department of Green University
Presented To :
Md. Mamunur Rahman
Lecturer (Lab), Department of CSE

3. Arduino-Driven LED Traffic Light

4. Contents
 Abstract
 Introduction
 Components
 Purpose of traffic signals
 Arduino Uno
 Simulation
 Programming Code
 Motivation
 Traffic System Work
 Traffic Signal
 Traffic Engineering
 Scope of Traffic Engineering
 Advantages of Traffic Signal
 Conclusion

5. ABSTRACT
The function of traffic lights is to
provide sophisticated control and
coordination to ensure that traffic
moves as smoothly and safely as
possible.

6. Introduction
A traffic signal, or stoplight as it is also
known, controls vehicle traffic passing
through the intersection of two or more
roadways by giving a visual indication to
drivers when to proceed, when to slow,
and when to stop.
In some cases, traffic signals also indicate to
drivers when they may make a turn.

7.  Traffic signal is an aid to
control traffic at
intersections where
other control measures
fail.
 The signals operate by
providing right of way
to a certain set of
movements in a cyclic
order.
 Depending on the
requirements they can

8.  This project uses a LED light as an indicator.
 A microcontroller for auto change signal after
a specific time interval.
 The LEDs are automatically on and off by
making the corresponding port pin of the
micro controller high.

9. COMPONENTS AND SUPPLIES
Arduino Uno
Resistor 220 Ohm
Solderless Breadboard
Breadboard wires

10. Green
Red
Yellow
Lights

11. RED
Come to complete stop at stop line or before crosswalk
or intersection.
After stopping, you may turn right on red at most
intersections if the way is clear.
Some school districts have local policies that prohibit right
turns on red by bus operators.
Some intersections display “NO TURN ON RED,” which you must
obey.

12. YELLOW
Stop if you can do so
safely.
The light will soon be
red.

13. Green
This signal is for go perfectly.
When we get this signal , we can understand that
we should go.

14. What is the purpose of traffic signals?
The main objective of traffic
signals is the regulation of
traffic.
 Traffic signals are also
commonly called traffic
lights, traffic lamps and
signal lights.
 Traffic signals are installed

15. Logic Diagram

16. What is Arduino Uno ?
The Arduino Uno is an open-
source microcontroller board
based on the Microchip
ATmega328P microcontroller
and developed by Arduino.cc.
The board is equipped with sets
of digital and analog
input/output (I/O) pins that
may be interfaced to various
expansion boards (shields) and
other circuits.

17. Project Simulation

18. Simulation

19. Programming Code
int LED_RED=10;
int LED_YELLOW=11;
int LED_GREEN=12;
int i=0;
void setup (){
pinMode(LED_RED,OUTPUT);
pinMode(LED_YELLOW,OUTPUT);
pinMode(LED_GREEN,OUTPUT);
}
void loop(){
digitalWrite(LED_RED,LOW);
digitalWrite(LED_YELLOW,LOW);
digitalWrite(LED_GREEN,LOW);
delay(10);
digitalWrite(LED_GREEN,HIGH);
delay(8000);

20. i=0;
while (i<5){
digitalWrite(LED_GREEN,LOW);
delay(300);
digitalWrite(LED_GREEN,HIGH);
delay(300);
i=i+1;
}
digitalWrite(LED_GREEN,LOW);
digitalWrite(LED_YELLOW,HIGH);
delay(2500);
digitalWrite(LED_YELLOW,LOW);
digitalWrite(LED_RED,HIGH);
delay(7000);
}

21. MOTIVATION
o The project finds high practical and
widespread use.
o It is a very primitive application of
the microcontroller.
o Easy and convenient to be built for a
beginner as the coding comprises of
basic instructions.

22. How does traffic system work?
I. The system represents the traffic strength
of a road graphically using traffic
judgments.
II. By measuring the traffic lined up on a
particular road the signal timings are
adjusted to let that particular way clear
out and then the next populated one.

23. 2

24. Why do we need traffic signals?
When properly timed, a traffic
signal increases the traffic
handling capacity of an
intersection, and when
installed under conditions
that justify its use, a signal is a
valuable device for improving
the safety and efficiency of

25. What is Traffic Engineering?
For those who are unfamiliar
with this branch of
engineering, traffic
engineering is a method of
civil engineering that helps to
optimize the performance and
efficiency of the movement of
people, goods, and
transportation.

26. Scope of Traffic Engineering
 Traffic engineering is not limited to working in an office
on planning and design projects but can involve going
into the field during construction.
 While being an electrical engineer is not a pre-requisite,
field staff should be International Municipal Signal
Association (IMSA) certified to open and work in the
traffic signal cabinet environment safely.

27. Advantages of Traffic Signals
2. They can reduce the number of accidents on roads like pedestrian accident and
right-angle collision of two cars.
3. Signals can increase the capacity of traffic handling at the intersection.
4. The traffic signals help for the safe movement of slow-moving traffic by
interrupting heavy traffic at regular intervals.
Advantages of traffic signals are as follows:
1. Traffic signals help for movement of traffic securely without any collision.

28. 5. The indications of the signals can be seen easily in foggy weather or at night
time. Without signalling system, it is very difficult to control traffic by the
traffic policeman at night or in foggy weather or on a rainy day.
6. Traffic control by signals is accurate and economical as compared to traffic police
control.
7. Under favourable conditions, they provide for continuous motion of traffic along
a specified path.

29. Conclusion
Traffic signal is an aid to control traffic at
intersections where other control measures fail.
The signals operate by providing right of way to
a certain set of movements in a cyclic order.
Depending on the requirements they can be
either fixed or vehicle actuated and two or
multivalued.

30. Thanks Everyone….