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Solar Water Control For

Power Saving

Bykrishnaveni

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CONTENTS

Introduction Main parts

Block Diagram

Explanation of Each block Working

Advantages

Applications

conclusion

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INTRODUCTION

This describes about the level indicator in the pumpi.e., switches are interfaced to have the correct timeduration to switch ON, then after that time slot the

motor gets turn off automatically. This control mechanism is an innovative solution

to operate a pumps for a required duration.

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Embedded Systems

Embedded system means the processor isembedded into that application.

An embedded product uses a microprocessor ormicrocontroller to do one task only.

In an embedded system, there is only one

application software that is typically burned intoROM.

Example printer, keyboard, video game player

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MAIN PARTS

AT89S52 MCU

Switches

Pump

Power Supply Solar Panel

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AT89S52

Switch 1

Switch 2

Switch 3

Switch 4

Crystal

Oscillator

Reset

Buzzer

Relay PumpTransistor

driver ckt

Transistor

Driver

Power

Supply

Power supply to all

sections

Lead

Acid

Batter

y

Bridge

Rectifier

Filter

Circuit RegulatorSolar

Panel

Block Diagram:

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Introduction to Microcontroller

The microcontrolleris a very commoncomponent in modern electronic systems.

Its use is so widespread that it is almostimpossible to work in electronics without comingacross it.

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PIN DIAGRAM

12345678910111213

14151617181920

40393837363534333231302928

27262524232221

P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7RST

(RXD)P3.0(TXD)P3.1

(T0)P3.4(T1)P3.5

XTAL2XTAL1

GND

(INT0)P3.2(INT1)P3.3

(RD)P3.7(WR)P3.6

VccP0.0(AD0)P0.1(AD1)P0.2(AD2)P0.3(AD3)P0.4(AD4)P0.5(AD5)P0.6(AD6)P0.7(AD7)

EA/VPPALE/PROG

PSENP2.7(A15)

P2.6(A14)P2.5(A13)P2.4(A12)P2.3(A11)P2.2(A10)P2.1(A9)P2.0(A8)

AT89S52

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DESCRIPTION

The AT89S52 is a low-power, high performanceCMOS 8-bit microcontroller

with 8K bytes of in-systemprogrammable Flash memory.

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PROGRAMMING

After compilation in KEIL compiler, themachine source code is converted into hexcode which is to be dumped into the

microcontroller for further processing.

Hexa code has to be dumped into themicrocontroller placed in the programmer kit.

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SWITCHES

Monday, January 20, 2014WineYard technologies

This is the simplest way of controlling

appearance of some voltage onmicrocontrollersinput pin

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Driver circuit for relays

Driver ckt is used to control the

current through the relays

For driving the relays simple npn

network is used

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RELAYS

Relays are usually SPDT ANDDPDT

Most (chips) cannot provide therequired current and a transistoris usually used to amplify thesmall IC current to the larger

value required for the relay coil.

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LED

LIGHT EMITTING DIODES are manufactured indifferent shapes, colors and sizes.

They perform similar to common diodes with the

difference that they emit light when current flowsthrough them.

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Power Supply

This system uses regulated 5V, 500mA powersupply.

voltage regulator is used for voltage regulation.

Bridge type full wave rectifier is used to rectifythe ac out put of secondary of 230/12V step downtransformer.

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SOLAR PANEL

A solar panel(photovoltaicmoduleor photovoltaic panel) is a packaged,interconnected assembly of solar cells, also known as

photovoltaic cells. The solar panel can be used as acomponent of a larger photovoltaic system togenerate and supply electricity in commercial andresidential applications.

http://en.wikipedia.org/wiki/Solar_cellhttp://en.wikipedia.org/wiki/Solar_cell

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WORKING

This water control system provides the facility ofautomatic switch off after the requited time

duration. This is achieved by using the AT89S52 MCU.

Four push-to-on switches are connected to oneport of the microcontroller.

These four switches are to provide four differentfixed time constants .

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A transistor is used to drive the relay during theactive time period. 5V double pole doublethrough

relay is used to control the AC liquid pump.

LED indication is provided for visual

identification of the relay / load status.

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This system uses regulated 5V, 750mA powersupply. Power on LED is connected for visual

identification of power status.

Bridge type full wave rectifier is used to rectify

the ac out put of secondary of 230/18V stepdown transformer

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ADVANTAGES

Highly Accurate

Low cost

Four different fixed time schedules

Ease of Operation

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APPLICATIONS

Industrial machinery

House hold items like Ovens, refrigerator, AC

Agriculture Motors

Water pumps

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CONCLUSION

This Auto Turn OFF with Four Different Timeslotsis designed and implemented in embeddedsystem domain.

Higher efficiency is indeed achieved using theembedded system.

The method is verified to be highly beneficial to

switch OFF the system. User friendly.

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REFERENCES

Several standard books such as Embedded systemsby Raj Kamal, Tata McGraw-Hill Education,2008,8052 Microcontroller-Wikipedia had to bereferred

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QUERIES????

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THANK YOU