Home & Office Security System aaa

1/29/2015 Home & Office Security System 1

Under

the supervision of

Mr. Avanish Kumar Singh

(Lecturer, ECE Deptt.)

What is security system?

Existing system.

Statistics.

Component of security system.

Why we use security system.

Proposed system.

Component of proposed system.

Block diagram.

Working procedure of system.

Architecture of our system.

Develop tool .

At89c51 Controller

Max 232

Description of max 232

Power supply Transformer

Rectifier

Smoothing circuit

Regulator

working of home office security system.

Application and scope

Limitation

Future aspects.


Security is the condition of being protected

against danger or loss. In the general sense,

security is a concept similar to safety.

The word "security" in general usage is

synonymous with "safety," but as a technical

term "security" means that something not only

is secure but that it has been secured.

Security is a growing concern for many today.

1/29/2015 4 Home & Office Security System

Homes without security systems are about 3 times more likely to be broken into than homes with security systems – Source: FBI


A Sensory system.

A data acquisition system.

A data processing and archiving system.

A monitoring system.

An alert messaging system.


Peace of Mind

No worries while you’re away

Concern for the safety and well-being of their

appliances, things, locations etc.

Deterrent to robbery and home invasion


Much system failed to be an efficient monitoring

system. They may fail to give service at any

instance. The efficiency was poor.

Many products in market are expensive and

complicated and require the system to be linked

to a public emergency system.


In our system a microcontroller will monitor all

the sensors for any type of Intrusion.

Microcontroller will send these values to the

PC.

PC will correspondingly shade the graphical

region where the intrusion is detected.

An alert message will be shown on the Screen

in red color.


The System

Hardware

Software

Max232 IR

Sensor

Microcont

roller Power

Embedded C Visual Basic


Sensors

Microcontroller

MAX 232

Personal Computer

Security Personal


Software:

Keil

Visual Basic 6

Hardware:

ICs: MAX232.

Microcontroller- AT89C51.

Power Supply.

Switches, Sensors.



The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer with 4K bytes of Flash PEROM.

The Atmel AT89C51 is a powerful microcomputer, provides a highly-flexible and cost-effective solution to many embedded control applications.

The Power-down Mode saves the RAM contents .

The MAX232 device is a

dual driver/receiver that

includes a capacitive

voltage generator to supply EIA-232 voltage levels from

a single 5-V supply.

Each receiver converts EIA-232 inputs to 5-V

TTL/CMOS levels.


TRANSFORMER

RECTIFIER

SMOOTHING CIRCUITRY

REGULATOR


Transformer convert AC

electricity from one voltage

to another with little loss

of power.

step-down transformers

reduce voltage from 220v

to 20v.

Turns ratio=Vp/Vs =Np/Ns.



A bridge rectifier can be made

using four individual diodes.

It is called a full-wave rectifier

because it uses all the AC wave

(both positive and negative

sections).

1.4V is used up in the bridge

rectifier because each diode

uses 0.7V when conducting

and there are always two

diodes conducting.

d

1

DD1

D3

D4

D2


Smoothing is performed

by a large value

electrolytic capacitor.

They connected across

the DC supply to act as

a reservoir, supplying

current to the output

when the varying DC

voltage from the rectifier

is falling.


Voltage regulator ICs

are available with

fixed (typically 5, 12

and 15V) or variable

output voltages.

It provide a fixed

regulated supply

The "Visual" part refers to the method used to

create the graphical user interface (GUI) & the

"Basic" part refers to the BASIC (Beginners All-

Purpose Symbolic Instruction Code) language.

Visual Basic (VB) is an event driven programming

language.

It enables rapid application development of graphical

user interface (GUI) applications, access to databases.

The advantage of using VB over other programming

languages is its user friendly programming.


Book Self

Door-2

Locker

Almirah

Door1

Main Gate

Door-1

Locker

Almirah

Door-2

Book Self

Main Gate


Door-1

Locker

Almirah

Door-2

Book Self

Main Gate

Interrupt


Book Self

Door-2

Locker

Almirah

Main Gate


Home security

Office security

Shop security

Lab security and many more


Wired connection between the hardware

and the PC

Ranges of IR sensors.


Connection between the hardware and the

pc.

The values of the sensors can be

transferred to the pc by any wireless means.


Microprocessor Architecture, programming and

applications (Gaonkar),

The 8051 Microcontroller (Ayala),

The 8051 Microcontroller and Embedded

Systems (Mazidi),

Op-Amps and linear integrated circuits

(Gayakwad),


www.beyondlogic.org

www.electronicsforu.com

www.alldatasheets.com

www.elecktor.com

www.keil.com

www.8051projects.com

www.discovercircuits.com

www.microcontroller.com


33 Smart Dust By: Rajeshwar Singh & Shahul Sarraf

Home & Office Security System aaa

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