Website: www.cse.iitd.ac.in/~ee1040329

Person at the door

Camera Module

ARM Platform

Communication Module

User

Image capture using USB WebCam

Display of

image to user

on PC

Opening of a door

fitted with an

Electromagnetic lock

Transfer of captured image using CC1000

modem

Final Top Level Design

Input to Parallel Port of PC

( Ringing of bell)

Transfer of instruction to open door using CC1000

PC-PC demonstration

1. Door Module

2. Communication Module

3. User Module

Modules Accomplished

Door Module

Door Circuitry:• Door Bell

• Status LEDs

• Relay circuit interfaced with parallel port

• Wooden door fitted with electric lock

Web-Cam:

• Capturing snapshots

• Optimization of image size

Communication Module

Serial Data Communication

• Image transferred using a NULL modem by a C code as well as by hyper terminal

• The C code sends the pixel values of the captured image

•At receiver the image is reconstructed using these pixel values

•The time taken for the entire process is less than 10 sec.

User Module

• Display of transferred image to user on PC

• If user takes the decision to open the door then he presses a key to send an instruction to Door Module via serial communication.

Wireless Communication

• Text input was successfully sent using Hyper terminal with CC1000 modem.

• The image file that was sent was highly corrupted and no reconstruction was possible.

• Some starting data was received followed by a lot of garbage.

• As the data rates were changed the performance varied with the best coming at 4.8 Kbps

ARM 9 Implementation

Kernel 2.6 image has been built with only those modules that were necessary to us.

We incorporated Web-Cam and USB controller modules only.

Vivi boot loader has been compiled and a ready to load & execute binary is ready.

Issues with Linux Porting on Arm 9

The JTAG that is available with us is faulty.We are able to access JTAG over network

and give instructions But the JTAG can’t access the ARM board

properlyIt detects the Arm 9 board but can’t load

the boot loader program into board’s ROM

Demonstration

Wired (RS 232 serial cable) PC-PC demonstration is ready.

Currently focusing on a wireless PC – PC demonstration using HyperTerminal.

THE END

Naresh KumarUdit Garg Prateek BhatnagarHarpreet SinghVikasSumit Singla

The Team:

Door Circuitry

Pressing a bell triggers the whole system Bell input given to PC via parallel port Activation of Web-Cam to capture

snapshotFinal signal to open the door also given

through parallel port

Parallel Port and associated circuitry

We have used PC’s parallel port to send and receive signals to Door end.

Output of parallel port is logic 1 (i.e. 5V) and logic 0 (i.e. 0V).

We are sending a logic 1 input to status pin as an indicator of door bell triggering.

Parallel Port + Associated circuitry

Door is opened by sending high through data port

The voltage required to operate the electric lock fitted in the door is 12V

This 12V has been achieved using “relay switches” .

320x240 (coloured JPG) 7 kB 80x60 (B/W, BMP) 5.7 kB

80x60 (B/W, JPG) 16 Level 80x60 (B/W, JPG) 256 Level

80x60 (B/W, BMP) 2 Level