Automatic control of street light

8/18/2019 Automatic control of street light

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Automatic Street LightAutomatic Street Lightcontrol using LDRcontrol using LDR


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Compiled by :

Changela Savan IU124106008 Kavathiya Mit IU124106020

Lohariar !evang IU12410602"

#ala $%ay IU124106062

&'ided by:(

)ro*+ Lal%i Katariya


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Contents

Planning of Project

Introduction

Circuit Diagram

Hardware Requirement

Description of Hardware

Working

Simulation Bread-oard !ounting

PCB !ounting

Conclusion


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Introduction

!an" of t#e people #a$e a p#oia ofdarkness% so to assist t#em in suc#situation% we #a$e e&plained a simplecircuit' It will automaticall" turn on streetlig#t in t#e wa" of ()Ds or ul coupledwit# rela"' Working t#is circuit is $er"muc# eas" and also t#e powerconsumed " t#e circuit is $er" lowecause of t#e $er" few componentsused in t#e circuit'


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Circuit diagram


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Components:

IC C*+,. / ,

Resistor R, 0,. 12 / , Resistor R3 0++.. )2 / , Resistor R+ 0, 12 / , 4ariale Resistor 4R, 0,. 12 / , Capacitor C, 0,.u52 / ,

(DR / , 6ransistor 6, 0BC782 / , Rela"-, ()D-,


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Description of Hardware :

,1- L!.:

Sen/itivity depend/

on inten/ity o* light+

.e/i/tane o* L!derea/e ith inrea/e

in inten/ity o* light and

vie(ver/a+


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,2- .e/i/tor :

It i/ a pa//ive omponent having to terminal/ thatare '/ed to manage the 'rrent *lo in the ir'it+

$ 'rrent that *lo/ via a re/i/tor i/ diretlyproportional to the voltage that appeared into re/i/tor+

o type/:

,1- 3ied val'e re/i/tor

,2- 5ariable re/i/tor


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(3)IC CA3!" :


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IC

he C$ "140 i/ an operational ampli*ier an

or/ on /'pply voltage 45 to "65 very

lo inp't 'rrent *rom 10p$ to 1m$+

7ere he C$"140 or/ a/ a omparator

and give/ *a/t re/pon/e high /peed+


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(!) Rela#s

.elay/ i/ an eletrially operated /ith+

C'rrent *loing thro'gh the oil o* the relayreate/ a magneti *ield hih attrat/ a

lever hange/ the /ith ontat/+

It ha/ "(pin4(pin9(pin etb't e have

'/ed 9(pin in o'r ir'it diagram+


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.elay o**er/ ea/y ay *or L;! to indiate a

voltage i/ pre/ent at .elay oil+

$/ no inp't /tate

the Ced C


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($) %C$!& 'ransistor :

It i/ a general p'rpo/e /ilion =)= bipolar

%'ntion tran/i/tor+ It i/ '/ed *or ampli*iation /ithing p'rpo/e+

7ere *or /ithing p'rpo/e it i/

bia/ed /o that it remain/ on i*there i/ /ignal at it/ ba/e other(

i/e it i/ ompletely o**+


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oring of Automatic Street LightController Switch Circuit:

6#e working of circuit is $er" muc# eas"

to understand' In t#is circuit% we used ICC*+,. w#ic# is asicall" an operationalampli:er' Pins 3 and + of t#ese IC areused to compare t#e $oltage and gi$e us

t#e output in return i'e' it works as apotential di$ider in its in$erting and non-in$erting inputs 0pins 3 and +2'


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Cont*

In thi/ L!. and 5.1 *orm one potential

divider hih i/ '/ed to provide a variablevoltage at the inverting inp't ,that i/ 2- and

the /eond potential divider i/ b'ilt aro'nd

non(inverting inp't ,pin "- ith the help o* .1

and .2 hih ill grant hal* o* the /'pplyvoltage to non inverting pin+


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Cont*

$/ e no property o* L!. that d'ring the

time o* day re/i/tane i/ lo there*orevoltage at the inverting inp't , I; pin 2- i/

higher than the voltage at the non(inverting

inp't ,pin"- hene the o'tp't at the pin6 i/

lo /o the tran/i/tor goe/ into the 'to** /tatehih mean/ L;! or b'lb ill not glo+


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Cont*

?'t in dimne// or in night e no thatre/i/tane o* L!. i/ high hene voltage atinverting inp't pin 2 o* the IC C$"140 derea/e/than the non inverting inp't pin " a/ a re/'lto'tp't pin 6 move/ to high /tate hih maetran/i/tor to ond't and the L;! or b'lb

a//oiated to it /tart /immering+


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Simulation (using +roteus):

"

2

@

4

6

1 9

8

U1

C$"140

.110

.2""0

.51

10K

."

1

A1?C948

C110'

&=!

.L1

.;240093

5CC .elay S'pply

!1L;!(&.;;=

&=!

1

2

L!.1


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%read,-oard mounting :


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+C% mounting


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Ad.antages:

=o man poer re'ired+

Simple Con/tr'tion+ ;**iient method+

Le// Con/'mption o* eletrial energy+

Le// maintenane+ Cheap and eonomial+


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Conclusion:

In oming day/ thi/ ill prove a great boonto the orld /ine it ill /ave a lot o*eletriity o* poer plant/ that get/ a/ted inill'minating the /treet light/+ $/ theonventional /o're/ are depleting very *a/tthen itD/ time to thin o* alternative/+


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Automatic control of street light

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