Infrared burglary fence - Electronic Circuits Projects Diagrams Free

purdue umaru · 11th February 2004, 03:21 PM

Hi,
I am writing a post graduate project on the topic, 'Infrared Burglary Fence
with Intrusion Location'. I need assistance/contributions on how to go about it. The transmitter should be active infrared. The system must be able to detect the location where the intruder came in.

I also need circuit diagrams.

Thank you.
Purdue U.

**kinjalgp** · 11th February 2004, 03:45 PM

In what form do you need loaction? ie. in x,y co-ordinates or just the direction? Instead of IR beam use LASER for better directivity and less complexity.

purdue umaru · 11th February 2004, 04:02 PM

The location is directional and i prefer IR

**kinjalgp** · 11th February 2004, 04:45 PM

What is the permieter of your compound and what type of IR source are you going to use? is it IR LED?

john1 · 11th February 2004, 07:39 PM

Hi purdue umaru,

If you put Infra Red beams each covering sections,
then an interruption could alert you to a section,
the more sections wanted, the more beams.

Depends how precise you need to locate ...

Best of luck with it, John

purdue umaru · 12th February 2004, 09:55 AM

The area I want the system to cover is 400 sq Meters for a start and intend using IR LED as the IR source.

Regards,
Purdue.

purdue umaru · 12th February 2004, 10:00 AM

The problem is that i want to use only one receiver.

regards,
Purdue.

**kinjalgp** · 12th February 2004, 12:43 PM

I don't think it is possible to detect 4 directions with one sensor. What is the problem in using 4 sensors? You mentioned your distance is 400 meters. So which LED are you going to use which can focus its radiation upto 400m. Even if you use bunch of LEDs I don't think it will be sensed by any photodiode without high gain amplifier. IR LASER will be a better alternative. You can easily use it upto 1km.
Lets see if any expert comes up with a idea. :idea:

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11th February 2004, 03:21 PM	(permalink)
purdue umaru	Infrared burglary fence Hi, I am writing a post graduate project on the topic, 'Infrared Burglary Fence with Intrusion Location'. I need assistance/contributions on how to go about it. The transmitter should be active infrared. The system must be able to detect the location where the intruder came in. I also need circuit diagrams. Thank you. Purdue U.

11th February 2004, 03:45 PM	(permalink)
kinjalgp	In what form do you need loaction? ie. in x,y co-ordinates or just the direction? Instead of IR beam use LASER for better directivity and less complexity. __________________ "There is no way to peace, peace is the way!"

11th February 2004, 04:02 PM	(permalink)
purdue umaru	The location is directional and i prefer IR

11th February 2004, 04:45 PM	(permalink)
kinjalgp	What is the permieter of your compound and what type of IR source are you going to use? is it IR LED? __________________ "There is no way to peace, peace is the way!"

11th February 2004, 07:39 PM	(permalink)
john1	Hi purdue umaru, If you put Infra Red beams each covering sections, then an interruption could alert you to a section, the more sections wanted, the more beams. Depends how precise you need to locate ... Best of luck with it, John

12th February 2004, 09:55 AM	(permalink)
purdue umaru	Infrared burglary fence The area I want the system to cover is 400 sq Meters for a start and intend using IR LED as the IR source. Regards, Purdue.

12th February 2004, 10:00 AM	(permalink)
purdue umaru	Infrared burglary fence The problem is that i want to use only one receiver. regards, Purdue.

12th February 2004, 12:43 PM	(permalink)
kinjalgp	I don't think it is possible to detect 4 directions with one sensor. What is the problem in using 4 sensors? You mentioned your distance is 400 meters. So which LED are you going to use which can focus its radiation upto 400m. Even if you use bunch of LEDs I don't think it will be sensed by any photodiode without high gain amplifier. IR LASER will be a better alternative. You can easily use it upto 1km. Lets see if any expert comes up with a idea. :idea: __________________ "There is no way to peace, peace is the way!"