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'38kHZ IR'
2000\02\24@123245 by Soon Lee

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Hi guys got a problem here hope you can help me.

If I am using a 38Khz IR, I work perfectly in places where the is no IR
interference, but my workplace is a smart building therefore the whole
building is full with IR of the similar freq, is there any way to still
recieve what i have sent?

thanks

2000\02\24@151911 by Robert Rolf

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Soon Lee wrote:
> If I am using a 38Khz IR, I work perfectly in places where the is no IR
> interference, but my workplace is a smart building therefore the whole
> building is full with IR of the similar freq, is there any way to still
> recieve what i have sent?


Not easily. Reduce the distance between your Tx & Rx, point the
Rx to an area with fewer interfering sources. Shielding tunnels
on the IR Rx may help.

You may have to change carrier frequency or use a more robust
protocol with checksums/FEC. Perhaps a more narrowband filter
in your detector (if it's discrete). Rhom, Siemens & Telefunken make
IR detector modules with oddball frequencies (but the MOQ's
will kill you).

Robert

2000\02\24@194849 by andy howard

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> Hi guys got a problem here hope you can help me.

> If I am using a 38Khz IR, I work perfectly in places where the is no
IR
> interference, but my workplace is a smart building therefore the whole
> building is full with IR of the similar freq, is there any way to
still
> recieve what i have sent?


1). use a different frequency.
2). use a very slow data rate and massively oversample the input.
3). put your IR detector in a tube to make it directional.






.

2000\02\24@231048 by Wagner Lipnharski

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The IR usage in companies and factories are becoming a problem. This is
not only your problem, believe me.
One solution is redecorate the walls and ceilling with infrared
absorbing material or a special paint. It would force the use of
directional IR communication (what should be the right way to do it).

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