ABSTRACT Fire Alarm

8/16/2019 ABSTRACT Fire Alarm

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This is the design and construction of a microcontroller based re alarm

system with smoke and heat detection using some sensitie electronic

transducers as the deice sensor and other components which made up the

circuit. This design is gotten from the design and construction emergency

light system which is aimed to secure the homes from re" power failure and

other disruptie situation. The system is a microcontroller based design

which its main core controller makes use of a microcontroller AT89s52 to

trigger the alarm unit and water sprinkler to $uench re. This deice is an

actie deice which keeps eery part of the rooms in check for re outbreak

in the home and its enironment. %rom many time has di!erent homes and

industries su!er re outbreak in companies" industries" homes and some

other place where re security is needed. &roperties are now e'pensie that

owners protect them from many problems lie re outbreaks" theft wired

intruder alarms system are used" rusting for metals and other destructie

deices.

%ire alarm system is also called re emergency light system where it takes

care of re outbreaks in homes and other desired place where it is needed to

controller home and o(ce residential through some electrical sensor like the

thermistors and the light dependent resistor for smoke detection and

operation. )ystem actiations and controls are also needed to e'ecute this

operation as it helps to alerts the people in charger of what is about to

happen through smoke rising and blocking the smoke sensors *+,- and the

ldr derie alerting the microcontroller by sending a #/ message to the

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&ower supply

0icrocontroller unit

)moke sensor#

%ire sensor #

1ater sprinkler

-eset butn

Alarm unit

microcontroller which triggers the alarm system and stops when reset. This

concept was used as a result of many references gotten from other e'isted

designs we encounter during our research work.

The performance of this proect in arious ways made it possible to hae a

high recommendation ia homes" industries and any other re$uired place

where the installation of this deice is needed to perform its operation" many

companies who has su!ered under this ha3ardous condition has carried out

for such a deice to reach them at a high recommendation

DESIGN AND IMPLEMENTATION

BLOCK DIAGRAM

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Defnition o important terms

This list the arious terms use in this report" the components inoled

and the way they worked to help in the deelopment of this proect.

Terms described and listed like#. 6oltage -egulation2. &ower supply4. 0icrocontroller unit7. The alarm unit5. +ight mitting ,iode. Transistors:. -esistors8. +ight dependent resistor9. Thermistor

This materials are also described in details of there working principals

and connection which aids to the design and construction of this

proect

CIRCUIT DIAGRAM OF TE DESIGN

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1

2LDR1

TORCH_LDR

+tc

10.00RT1PTC_NICKEL

3 6 %

RV1

10k

0 %

RV2

10k

R1

1k

R2

1k

R31k

R41k

XTAL218

XTAL119

ALE30

EA31

PSEN29

RST9

P0.0AD039

P0.1AD138

P0.2AD23!P0.3AD3 36

P0.4AD43"

P0."AD"34

P0.6AD633

P0.!AD!32

P1.0T21

P1.1T2EX2

P1.23

P1.34

P1.4"

P1."6

P1.6!

P1.!8

P3.0RXD10

P3.1TXD11

P3.2INT012

P3.3INT113

P3.4T014

P3.!RD1!

P3.6#R16

P3."T11"

P2.!A1"28

P2.0A821

P2.1A922

P2.2A1023

P2.3A1124

P2.4A122"

P2."A1326

P2.6A142!

$1

AT89C"2

X1

CR%STAL

R"10k

C110&

VI1

VO3

' N D

2

$2!80"

(112V

C2

100&

($)1

($))ER

*1(D131

*2

(D131

R61k

R!220

D1LED,RED

RL1

12V

*3

2N3904

R8

1k

R9

1kR10

1k

R11

1k

*4

2N3904

PROGRAM FLO!CART

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)tart

-ead . ; .#


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1ait for reset

)top$eat e&' p*)#

smo+e e&' p*)*

rst e&' p()*

re%a, e&' p#)-

start.

set/ $eat

0%r re%a,

set/ smo+e

0%r a%arm

$ere. 1n/ smo+e2 /'33

1n/ $eat 2/'33s1mp $ere

/'33. a0a%% 0%o0+

1n/ rst2start

set/ re%a,

s1mp /'33

0%o0+.

set/ a%arm

a0a%% 4e%a,

0%r a%arm

a0a%% 4e%a,

ret

4e%a,.mo5 r#26(--

mo5 r*26*##

mo5 r(26*#

%oop. 41n3 r#2%oop

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41n3 r*2%oop

41n3 r(2%oop

ret7 en4

PSEUDOCODE

A. )T? . A@, .#" +- A+A-0 A@, &B0& -+AC?. 0D@


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%or capacitors the ,00 was switched to the 22uf range and the capacitors

were inserted into the slot proided for it by the meter. %inally the output

oltages were tested using an e'ternal load input for oltage output test.

BILL OF ENGINEERING MEASUREMENT AND E8ALUTION

To carry out this proect" some things were put into consideration.

Among those things" the cost of components used for the construction was

the priority. The table below shows the components that are used in the

proect construction" the $uantity and also the price of those components.

)/@ D0&D@@T 6A+B GBA@T


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The re alarm system with smoke detector is a kind to system to be

concentrate on" because of the e!ects of re outbreak in homes and in our

arious places of inolements re alarm system with smoke detector is

need in the following places

REFRENCES

a. Dona%4 G) Fin+ an4 ) !a,ne Beat,2 )tandard Eandbook for

the lectrical ngineers" leenth dition" 0c>rawHEill" @ew Cork"

#9:8.b. E%e0troni0s De5i0e an4 Cir0'it T$eor,2 ?oyletad +. -obert

and @ashelsky +ouic" )eenth edition" #999" &rentice Eallo" @ew

Iersey.c. ABB 9(##:; 0anual on +oad Transfer

# JA Te

ABSTRACT Fire Alarm

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