Online Device Controller-A project and implimentation report
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ajukrishnan
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#1
31-12-2009, 07:30 AM


The ËœOnline Device Controller (ODC) is a multi-channel hardware administration
system that has been developed to enable the control of equipments and appliances from
any part of the world, through the Internet. The concept of ODC is a relatively new one,
and makes use of Common Gateway interface (CGI), a very powerful technique that was
hitherto used solely for e-mail, database access and other Ëœsoftâ„¢ purposes involving
dynamic web page content. But, through this project and implimentation we have made an attempt to bring a
very powerful but often unknown and underutilised aspect of CGI; the same technique
used to manipulate our e-mail accounts can equally well be applied to access the parallel
port of the web server, and control hardware through it.
Our project and implimentation, the ËœOnline Device Controllerâ„¢ allows a remote user to login to the
Web server and control the devices connected to the server. Also provided is the feature
to control the same devices locally, through a Cordless Telephone.
The present product offers the facility to remotely control an ON/OFF device and
an Intensity Variable load, through the Internet, and locally through a Cordless telephone
and is a product of paramount significance in office, industrial and household
applications.

Working of the System
A typical scheme of the working of the system can be described as follows.
A remote user can log in from any location in the world to the homepage of the
Web server through the Internet/Intranet via a Web Browser. This request is processed by
the CGI and after security check, the user is presented with the current status of
equipments. Now he can control the equipments as required and he can send the
information through a form or menu. According to the control information received, the
CGI executes the required programs to read/write data to the parallel port (LPT1).
Local control is made possible with a Cordless telephone. The PC and phone
produces their own interrupts. When a key on the keypad is pressed, the arrival of a new
valid DTMF tone will interrupt the PC using the PC Parallel port (using IRQ 7). The
DTMF tone generated from the telephone line is decoded by the DTMF Decoder which
produces the corresponding 4 bit BCD code output which is read by the Microcontroller.
The Microcontroller 89C51 reads the appropriate control signal when interrupted by the
PC (through /INT0 pin of the Microcontroller). This is processed and is sent to the output
port, and to the devices. ON/OFF devices are controlled through the Relay Based Control
circuit and Intensity Variable Loads are controlled via the Triac Based Circuit. The firing
pulse for the Triac is generated by the 8951. To synchronize the firing pulse with the AC
cycle, a Zero Crossing Detector circuit is also used which is connected to another
interrupt pin (/INT1) of the Microcontroller.
After executing the control signals, the actual status of the equipments are read by
sensing the load current by means of a Current Transformer, is fed back through Status
Reading circuit and is read through the input pins of the PC Parallel Port.
Finally, the remote user will receive back the confirmation message that the status
of the devices has been changed as per the control signal sent by him. This completes the
cycle of events.

Full project and implimentation report download:

.pdf   Online Device Controller.pdf (Size: 270.56 KB / Downloads: 298)
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
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project report helper
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#2
18-10-2010, 03:36 PM


.doc   SYNOPSIS odcs.doc (Size: 51.5 KB / Downloads: 79)
Online Device Control System


Research Supervisor : Project Coordinator:
Name : Mr. Dilbhag Manju(224/07)
Designation :Lecturer Bhawana(209/07)
Institution Big GrinAV College of Engg.
& Tech. Kanina, Mohindergarh
SESSION 2007-11
D.A.V. College of Engineering & Technology
Kanina, Mohindergarh, Haryana



INTRODUCTION OF THE PROJECT


The ‘Online Device Controller (ODC) is a multi-channel hardware administration system that has been developed to enable the control of equipments and appliances from any part of the world, through the Internet. The concept of ODC is a relatively new one, and makes use of Common Gateway interface (CGI), a very powerful technique that was
hitherto used solely for e-mail, database access and other ‘soft’ purposes involving dynamic web page content. But, through this project and implimentation we have made an attempt to bring a very powerful but often unknown and underutilised aspect of CGI; the same technique used to manipulate our e-mail accounts can equally well be applied to access the parallel port of the web server, and control hardware through it.


Our project and implimentation, the ‘Online Device Controller’ allows a remote user to login to the Web server and control the devices connected to the server. Also provided is the feature to control the same devices locally, through a Cordless Telephone.

OBJECTIVE OF THE PROJECT

The present product offers the facility to remotely control an ON/OFF device and an Intensity Variable load, through the Internet, and locally througha Cordless telephone and is a product of paramount significance in office, industrial andhousehold applications.
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nirav09
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#3
03-01-2012, 04:11 PM

I need class diagram on my topic
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seminar addict
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#4
04-01-2012, 09:45 AM



to get information about the topic"Online Device Controller-A project and implimentation report" refer the link bellow

topicideashow-to-online-device-controller-a-project and implimentation-report?pid=60749#pid60749
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