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Worood Bent-allord

on 6 April 2014

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College of Engineering & Petroleum
Electrical Engineering Department

EE 497
Preliminary Design project

Dr. Saleh Al-shamali

Prepared by:

Worood Alazmi Sara Alhussaini

Motivation and Goals
Problem Statement
Requirement and justification
System Specifications
Time Management
Budget and Cost Analysis
Technology makes our life easy and saves a lot of time and effort. Robots are part of nowadays modern technology, They are an interesting subject to discuss about in this advanced world.

Improve the behavior of the less costly robot is the main goal of our project. The robot will track and follow visible and curvy line with high speed. So that it will be a useful guidance system everywhere.
Motivation and Goals
Problem Statement
The classical line following robot is slow response to the error occur so it will cause the motion of the robot to be unsmooth.

The problem can be improved by using feedback mechanism which forms an effective closed loop system.
To design and develop a simple and uncomplicated robot that follows a black line drawn on the white floor by using digital PID control with high efficiency and less cost .

To study the concept of sensors, DC motors, PID control and micro-controller.

To design and construct the platform of line follower robot, the micro-controller board, sensors and drive system.

To design and implement the PID algorithms into our micro-controller.

To test and tune the PID control better performance.

Why we use PID controller
First, there are two methods to control any system

Open loop system

Closed loop system

Does not have any loop back.

Non intelligent system.

Control output by changing input

Intelligent system, makes decision.

Takes feedback from the output and makes decision accordingly to obtain desired results.

PID and PLL are most commonly used.
Closed loop system
Open loop system
The difference between two system with and without PID controller
Without With
PID controller
Requirement and justification
To design a line follower robot with PID controller we will need:
1) Micro-controller
2) voltage regulators
7) two DC motors
3) motor drive circuit
4) 4-8 IR light sensors
5) two tires
6) LCD screen
8) batteries

System Specifications
The line following robot will have base with two tires attached to it.
the robot contains sensors that will give accurate data regarding to the position of the line.
the system need a voltage regulators to drop down the voltage from 12 to 5, in order to supply the sensors with their regular rated operation voltage.
the system will contains a micro-controller that control the data received by the sensor and 2 DC motor
the system need The motor drive circuit to supply the motors with a sufficient amount of current without damaging the micro-controller or the circuit board.
the system must have batteries to power up the micro-controller along with supplying power to the whole system.
the robot will contains LCD screen that will be connected as it will show the status of the robot.
Hardware Block Diagram
Stage 1
Stage 2
To avoid collisions with humans
We can use sensors
Put a barrier around the path of the robot

To minimize harm if a collision does occur
Make them from soft and light materials
Have an emergency shut-off button
The initial cost
The expected time to finish our project
Time Management
Thanks For
Questions are welcomed

we hope you enjoyed
Budget and Cost Analysis
Full transcript