solar tracking ppt

7/31/2019 Solar Tracking Ppt

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Solar Tracking System using

Real Time Clock

By

H.Mahesh Kumar (06-09-4081)

N.Mahesh (06-09-4082)

B.Mukesh (06-09-4088)


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Aim of the Project The main objective of this project is to track the sun and

rotate the solar panel accordingly, to receive sunlight to thefullest extent always during the day time

This movement is achieved by interfacing a stepper motor tothe solar panel that changes its direction according to thepositioning of the sun.

This is achieved using time reference that controls themovement time for 12 hours by a program written in such away that for every given time the solar panel faces to the sunto generate maximum power


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Introduction

We are using microcontroller 89S52 for controlling the

panel so that panel is rotated according to the sunsposition

A Stepper motor is used and it control and rotation is

done by the microcontroller

We also use KEIL software to simulate the programwhich is written in embedded C


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Block diagram of projectMICRO CONTROLLER

POWER

SUPPLY

RTC

LCD

Motor

driver

Stepper

Motor


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Why AT 89s52?

Coming to the question of why to use AT89s52 of allthe 8-bit Microcontroller available in the market themain answer would be because it has 8 Kb on chipflash memory which is just sufficient for ourapplication. The on-chip Flash ROM allows theprogram memory to be reprogrammed in system or byconventional non-volatile memory Programmer.Moreover ATMEL is the leader in

Flash technology in todays market place and henceusing AT 89s52 is the optimal solution.


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Software used KEIL

Vision3 is an IDE (Integrated DevelopmentEnvironment) that helps you write, compile, anddebug embedded programs.

Embedded C is used in this project


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Power supply


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Description of power supply The circuit uses standard power supply comprising of a step-

down transformer from 230v to 12v and 4 diodes forming a

Bridge Rectifier that delivers pulsating dc which is then filtered

by an electrolytic capacitor of about 470microf to 100microF.

The filtered dc being un regulated IC LM7805 is used to get 5v

constant at its pin no 3 irrespective of input dc varying from 9v

to 14v

The regulated 5volts dc is further filtered by a small capacitor

of 10 micro f for any noise so generated by the circuit


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Microcontroller AT89S52 Compatible with MCS-51 Products

8K Bytes of In-System Programmable (ISP) Flash

Memory 256 x 8-bit Internal RAM

Three 16-bit Timer/Counters


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Real Time Clock The RTC chip is a specialized chip that just keeps track of

time.

It runs on a battery and keeps time for you even when there is a

power outage.

Using an RTC, you can keep track of long timelines, even if

you reprogram your microcontroller or disconnect it from USB

or a power plug.

The RTC we'll be using is the DS1307 . It's low cost, easy to

solder, and can run for years on a very small coin cell.


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Motor Driver ULN2003 ULN2003 is a relay driver

It is used to drive the Stepper motor

It gives a low output to Stepper motor coil whichdrives the gear of stepper motor

It functions as inverter and it is cost effective


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Stepper Motor A stepper motor (or step motor) is a brushless synchronous

electric motor that can divide a full rotation into a large number

of steps.

To make the motor shaft turn, first one electromagnet is given

power, which makes the gear's teeth magnetically attracted to

the electromagnet's teeth.

So when the next electromagnet is turned on and the first is

turned off, the gear rotates slightly to align with the next one,

and from there the process is repeated


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LCD Display The LCD panel is used in interfacing with micro-

controller to display the Time and Solar Tracker

This is a 16 character x 2 lines LCD module capable ofdisplaying numbers and characters


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Schematic Diagram


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Procedure: Survey

First we studied about all components like

microcontroller,lcd,steppermotor

And we decided to modify project such that we areusing RTC DS1307 instead of LDRs


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Procedure

We bought all the components needed for our project

We soldered all components according to theschematic

We wrote the code and created hex file in keil software

We dumped hex file with the help of

willarprogrammer to the micro controller


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Software Programming KEIL

Vision3 is an IDE (Integrated DevelopmentEnvironment) that helps you write, compile, anddebug embedded programs.

Embedded C is used in this project


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solar tracking ppt

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