SUBMITTED BY:- Dalan Sahu (0901227739) Pankaj Ku. Bhuyan (0901227311) Nandan Ku. Dubey (09001227627) Sushil Ku. Swain (0901227447) Nityashree Nayak( 0901227083)

bendembarrassElectronics - Devices

Nov 2, 2013 (3 years and 9 months ago)

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SUBMITTED BY:
-

Dalan

Sahu

(0901227739)

Pankaj

Ku
.
Bhuyan

(0901227311)

Nandan

Ku.
Dubey

(09001227627)

Sushil

Ku. Swain (0901227447)

Nityashree

Nayak
( 0901227083)


INTRODUCTION.


DESIGN PRINCIPLE.


CIRCUIT DESCRIPITION.

a)Power
Supply.

b)Sensors
Interface:


i
) Over Voltage Detector.

ii) Over current Detector.

iii) Over Temperature Detector.

iv) Tress passed Detector.

v) Vibration Detector.

vi) Door Break detector.

vii) smoke detector.

viii) Water Level
Detector

c)Signal Conditioning.

d)Mother
Board.

e)LED
Indicators.

f)Relay
Drivers
.



FUTURE
EXPANSION



CONCLUSION
.



REFERENCE


The security system is one of the major focus area in the present social
and industrial environment. In the industries
security
system is one of the
important part.



. In this systems the security break is not only available to local access
but also this can be accessed from the remote terminals through internet
or local area network
.



This type of security system is quit useful in the small office, home,
industries the different sensors can be implemented to make the system
more versatile



This system is designed with an AT89C51 microcontroller and interfaced
with different sensors.



There
are different sensors connected to the microcontroller on
receiving the logic signal, the microcontroller decode the fault channels
and drives a LED indicator for local indication and a alarm is blown out.



This
is designed with a AT89c51 micro controller. The micro controller is
programmed to receive logic signals from the security sensors installed at
different locations.

a)Power
Supply
:


The
power supply designed for catering a fixed demand connected in this
project. The basic requirement for designing a power supply is as follows,


1.The
different voltage levels required for operating the devices. Here
+5Volt required for operating microcontroller. And +12Volt required for
drivers etc.



2.The
current requirement of each device or load must be added to
estimate the final capacity of the power supply.


Sensor Interface
:


Over
Voltage
Detector


the
line voltage (230vac) coming from the mains is to be step down that
voltage with the help of a step down transformer.

Over Current Detector
:


This is a circuit designed to detect over current. In this section a special
type of CT is used to detect very low current.


The
output of this CT is an AC voltage proportional to the Load current.
The CT voltage varies with load current.




Over Temperature Detector
:


we
needs a temperature sensor as a (THERMISTOR) which is a N.T.C type
for sensing the temperature and for comparing the
temperature.



we needs a OP
-
AMP which is configured as an voltage
comparator
(LM393
) which compares the two input voltage and gives the
corres
-
ponding

outputs according to the temperature.


In
the temperature sensor is a circuit that converts temperature to the
corresponding voltage.



Tress Passed Detector
:



A light
as a (IR) source is taken as element and for detector a
photodiode is taken as element for detector which converts light
source to electrical signal
.



This
sub section is sub divided into two parts:

1)IR
Transmitter.

2)IR
Receiver


Vibration Detector
:



PIezo

transducer is taken as element as a sensor to detect the vibration.
Here

output is very weak in signal for that an op
-
amp (LM324) is used
which is configured as a high gain amplifier. Here the op
-
amp gain is kept
at A=100.


Door Breaking
Detector


For that the detecting sensor is taken as a Reed switch and a bar magnet
which is kept at the opposite end facing each other. If somebody tries to
break the door, the reed switch is deactivated which gives a high to low
transition output signal at the
output.






SMOKE
DETECTOR


This is a simple Smoke Detector circuit based on a LDR and lamp pair for
sensing the fire. It uses a very simple approach to detecting smoke in the
air. The alarm works by sensing the smoke produced during fire.


Water level Detector


it will indicate the level of the water but at the same time it will ON/OFF
the motor with the help of a relay.


Whenever the water is below the lower level, the motor is in ON
condition. Similarly, when the water is in the upper level, the motor is in
OFF condition.

Signal Conditioning
:


The

output

form

the

different

parameter

or

sensors

input

signal

i
.
e
.

comparator

or

any

other

external

circuit

must

be

compatible

with

the



-
controller,

because

the



-
controller

can

takes

TTL

(
5
V
-

0
V)

transition

as

input

voltage

and

gives

a

5
V

as

output

voltage
.


Mother Board
:


The

motherboard

of

this

project

is

designed

with

a

MCS


51

core

compatible

micro

controller
.

The

motherboard

is

designed

on

a

printed

circuit

board,

compatible

for

the

micro

controller
.



This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


This

board

is

consisting

of

a

socket

for

micro

controller,

input

/output

pull
-
up

registers
;

oscillator

section

and

auto

reset

circuit
.


RELAY DRIVER
:
-


Relay

Driver

its

aspect

is

to

protect

the

equipments

from

fault

condition
.

Here

in

the

Security

section

there

are

4
-
relay

are

used

to

protect

from

the

4
-
fault

(sensors)
.

relays used here having following specifications.


Operating voltage = 12V DC


Coil resistance = 400



Capacity of contact point = 7A, 230V


Type = single contact




NO/NC







Buzzer Driver


This section interfaces one audible
Piezo

electric buzzer with the controller.
The controller activates the buzzer whenever there is any fault appears in
any of the channel.


The

conversion

of

electrical

pulses

to

mechanical

vibrations

and

the

conversion

of

returned

mechanical

vibrations

back

into

electrical

energy

is

the

basis

for

ultrasonic

testing
.




FUTURE EXPANSION
:





This

project

is

designed

with

due

limitation

of

time

equipments
.

This

project

can

be

further

expanded

to

interfaced

to

LAN

and

Internet
.




This

system

can

be

interfaced

to

the

Internet

so,

that

the

security

aspect

can

be

observed

and

warned

through

the

internet

access
.


CONCLUSION
:


This project has functioned satisfactorily in the laboratory condition. It may
require slight modification to make suitable for working in the out door
conditions. The results obtained are well below the level of experimental
Errors.


REFERENCE
:

WWW.ATMEL.DATABOOK.COM

WWW.TOPVIEW SIMULATOR.COM

WWW.NATIONAL.COM

WWW.ATMEL.COM

WWW.MICROSOFTSEARCH.COM

8051
-
MICROCONTROLLER AND EMBEDDED SYSTEM.


-
Mohd
.
Mazidi

The 8051 Micro controller Architecture, Programming & Applications


-
Kenneth
J.Ayala