Final Year Project titled “PC-based security system powered by 8051 Microcontroller,” Department of Electronics and Communication Engineering, Sri Venkateswara College of Engineering (Anna University), 2005
2. PROBLEM DEFINITION
The purpose of the project is to come out
with a Reliable Security System. Pictures of the
scene under security belt are sent via e-mail to
the user. The PC also initiates a call to the users
phone when there is intrusion. Remote
Controlling the PC is achieved using an
Interactive Voice Response System.
3. E-MAIL
(PICTURE) DOOR
IR
RX OR
TX
SMS WINDOW
MICRO-
CONTROLLER
ALARM STEPPER WEB-
MOTOR CAM
MODEM
IVM
SOFTWARE
4. MICROCONTROLLER
• 8051 MICROCONTROLLER
# 8255 I/O CHIP
* 40- PIN CHIP
* 3 PORTS - A, B, C OF 8-BITS EACH.
# OUR APPLICATION:
* PORT A – OUTPUT
* PORT B – INPUT
* SIMPLE I/O MODE (MODE 0)
5. SERIAL COMMUNICATION
WE WORK AT
* BAUD RATE – 9600 BPS
* DATA BITS - 8
* PARITY - NONE
* STOP BITS - 1
TO TRANSFER DATA SERIALLY
•TMOD( TIMER MODE) - TIMER 1 IN MODE 2.
•SCON (SERIAL PORT CONTROL REGISTER)
SERIAL MODE 1- 8 BIT DATA, 1 START AND 1 STOP BITS.
•SBUF - TRANSFER DATA VIA TxD.
•TR1SET TO START TIMER.
•TI FLAG BIT MONITORED.
6. SERIAL COMMUNICATION
WE SEND DATA “YES” SERIALLY TO THE PC.
TO RECEIVE DATA SERIALLY
•TMOD( TIMER MODE) REGISTER – TIMER 1 IN MODE 2.
•SCON (SERIAL PORT CONTROL REGISTER)
SERIAL MODE 1- 8 BIT DATA, 1 START AND 1 STOP BITS.
•SBUF - TRANSFER DATA VIA TxD.
•TR1SET TO START TIMER.
• RI FLAG BIT MONITORED.
WE RECEIVE DATA “DONE” SERIALLY FROM THE PC.
7. STEPPER MOTOR CONTROL
ALGORITHM:
• STEPPER MOTOR IS AT RESET POSITION.
• THE 8051 SCANS THE PORTS CONTINUOUSLY FOR
ANY I/P FROM THE IR RECEIVER CIRCUITRY.
• ON RECEPTION OF SIGNAL AT THE PORTS, 8051
AUTOMATES THE STEPPER MOTOR TO PREDEFINED
ANGLES.
8. START
RESET
STEPPER MOTOR (SM)
AND SCAN FOR I/P’S
NO
I/P AT NO I/P AT
PORT 1? PORT 2?
YES
YES
ROTATE SM BY
B DEGREES ROTATE SM BY
A DEGREES
SEND SIGNAL TO PC
TO TAKE A PICTURE
9. PROGRAMMING-
VISUALBASIC PROGRAMMING-I
ALGORITHM:
ALGORITHM:
• SERIAL COMM. PORT TO COMMUNICATE
WITH MICRO CONTROLLER IS CHOSEN AND
PORT SETTINGS ARE SET.
• THE COMM. PORT IS SCANNED FOR INPUT
FROM THE MICRO CONTROLLER.
• ONCE THE PROGRAM RECEIVES THE
REQUIRED INPUT, THE WEBCAM IS
AUTOMATED TO TAKE A PICTURE.
• THE WEB CAM CAN TAKE ‘N’ NUMBER OF
PICTURES DEPENDING ON THE
REQUIREMENTS.
10. VISUALBASIC PROGRAMMING-II
PROGRAMMING-
ALGORITHM:
ALGORITHM:
• AN ACTIVE-X CONTROL ezVidCap IS USED
TO AUTOMATE WEB CAM.
• THE PICTURES TAKEN ARE IN BITMAP
FORMAT.
• THE FORMAT OF THE PICTURE IS THEN
CONVERTED FROM .bmp TO .JPEG BY
COMPRESSION TECHNIQUE (USING
Picformat32).
• THE .JPEG PICTURE IS THEN STORED IN
THE SYSTEM AND SENT TO USER’S e-MAIL.
11. PROGRAMMING-
VISUALBASIC PROGRAMMING-III
ALGORITHM:
ALGORITHM:
• MICROSOFT OUTLOOK IS USED TO SEND THE
E-MAIL.
• A MISSED CALL OR A SMS MESSAGE IS SENT
TO THE USER’S MOBILE / PHONE USING A
DIAL-UP MODEM.
• ONCE DIALING A NUMBER IS COMPLETED
THE PROGRAM COMMUNICATES WITH THE
MICROCONTROLLER
• THE MICROCONTROLLER THEN RESETS
ITSELF TO THE INITIAL POSITION AND STARTS
TO SCAN FOR INPUT FROM THE IR RECEIVER.
12. START
SCAN FOR I/P FROM µC
AUTOMATE
WEBCAM
STORE PICTURES
CONVERT PICTURES FROM
.bmp TO .JPEG
e-MAIL USING
COMMUNICATE MICROSOFT OUTLOOK
WITH µC
DIAL A NUMBER
STOP
14. FEATURES OF IVM
CALL TRANSFER (CALL FORWARDING).
REMOTE ACCESS (LISTEN TO MESSAGES
BY DIALING-IN).
AUTOMATED OUTBOUND CALLS.
UNLIMITED VOICE MAILBOXES.
15. FEATURES OF IVM
AUTOMATIC MESSAGE FORWARD BY e-MAIL
OR UPLOAD TO INTERNET.
SAVE IN-COMING MESSAGES AS WAV FILES.
ABILITY FOR CALLER TO ENTER NUMBERS.
ABILITY TO OPEN FILES OR RUN OTHER
SOFTWARES.
16. REMOTE ACCESS BY TELEPHONE
ACCESS MAILBOXES:
LISTEN TO STORED MESSAGES.
TRANSFER OR DELETE THE MESSAGES.
ACCESS THE SYSTEM:
SHUTDOWN THE SYSTEM.
RESTART THE SYSTEM.
OPEN ANY EXTERNAL APPLICATION.
CLOSE THE RUNNING APPLICATION.
IVM ANSWERING ATTENDANT
17. 2 COMPUTER
1. WITH
INTERACTIVE VOICE
THE USER RESPONSE (IVR)
PUTS A CALL PHONE SOFTWARE
THROUGH.
3
DIALING A
SPECIFIC ACCESS
CODE-SOFTWARE
ENTERS
5 IVR MODE.
3
TRIGGERING THE 4
SECURITY SYSTEM. REGULAR
ANSWERING
CONTROLLING
MACHINE.
THE
COMPUTER.
*RESTARTING
18. SENDS IMAGES 1.
ABOUT THE
SCENE AT HOME
THROUGH DOOR
E-MAIL. CONNECTED
TO AN
6. ON –OFF
SWITCH
SMS
5.
WEB
CAM
PHONE CALL 2.
4.
COMPUTER
RECEIVES
THE SIGNAL &
ALARM
TAKES
3.
PREDEFINED
ACTION.
19. FUTURE ENHANCEMENTS
• USING A GSM MODEM
* SMS (SHORT MESSAGING SERVICE)
* MMS (MULTIMEDIA MESSAGING
SERVICE).
• THE SYSTEM MAY BE CUSTOMIZED:
* TRAP THE INTRUDER
* PARALYSE THE THIEF
20. REFERENCES - I
• IBM PC & CLONES, by B.GOVINDARAJALU.
• www.nch.com.au/ivm
IVM SOFTWARE FROM “NCH SWIFT
SOUND”.
• THE 8051 MICROCONTROLLER AND
EMBEDDED SYSTEMS, by MUAMMAD ALI
MAZIDI & JANICE GILLISPIE MAZIDI.
• www.electronicsforu.com
“ELECTRONICS FORYOU”
21. REFERENCES-
REFERENCES-II
• VISUAL BASIC 6-HOW TO PROGRAM, by
DEITEL & DEITEL.
• THE COMPLETE REFERENCE-VISUAL BASIC
6 by NEOL JERKE.
• http://www.martin2k.co.uk/vb6/ezVidCap
VIDEO CAPTURE CONTROL.
